Texas Instruments
TPS3808G01QDBVRQ1 - Auto Voltage Supervisor, 0.4V-5V SENSE | TI
MPN： TPS3808G01QDBVRQ1 ✓ 啟用中
1 Vdss
2.4 mA Id
SOT-23-6 (DBV) Package
MOQ： 1 |
TPS3808G01QDBVRQ1 概覽
The Texas Instruments TPS3808G01QDBVRQ1 is an AEC-Q100 qualified microprocessor supervisory circuit that monitors system voltages from 0.4 V to 5 V and asserts an open-drain RESET signal when the SENSE voltage drops below a preset threshold or when the manual reset (MR) pin is driven low, all housed in a 6-pin SOT-23 (DBV) package. It features an adjustable reset threshold, a programmable reset delay from 1.25 ms to 10 s using an external capacitor, and a very low typical quiescent current of 2.4 mA, making it well suited for automotive and industrial always-on monitoring rails where standby power budget is critical.
A voltage supervisor IC (also called a reset supervisor or voltage monitor) is a power management integrated circuit that observes a system rail and generates a clean reset signal to a microcontroller, SoC, or FPGA whenever that rail falls outside its valid operating window. Voltage supervisors sit hierarchically above DC-DC converters and LDOs in the power tree: DC-DC converters and LDOs regulate the rail, while supervisors verify the rail is healthy and force the processor into a known-good reset state on faults such as brown-out, power-up glitch, or slow ramp. They are fundamental building blocks for functional-safety designs (ISO 26262, IEC 61508) and any application that must boot deterministically.
The TPS3808G01QDBVRQ1 combines high threshold accuracy across the full -40 C to +125 C automotive Grade-1 range, an active-low RESET output with open-drain topology that allows wired-OR connection of multiple supervisors, a manual-reset input for operator or host push-button reset, and a programmable delay capacitor pin (CT) that decouples the watchdog timing from the supply ripple. Compared with simple internal MCU brown-out detectors, this part provides a tighter threshold tolerance and a cleaner, externally programmable reset pulse width that is independent of firmware code paths.
Typical applications include automotive ECU power-good monitoring, ADAS sensor rail supervision, body and chassis controller reset management, industrial PLC watchdog, and battery-powered IoT node supply monitoring. The wide SENSE input range also enables direct supervision of low-voltage rails (down to 0.4 V) used by modern processors without auxiliary dividers in many cases.
When designing with this device, place the CT delay capacitor close to the CT pin and use a 1.5 nF X7R ceramic for an approximate 100 ms reset delay per capacitor value guidelines. Ensure the pull-up resistor on open-drain RESET is sized to the downstream logic level and routed away from noisy switching nodes to avoid false resets during load transients.
This page aggregates distributor stock, drop-in SOT-23-6 alternatives, and practical design considerations that complement the TI datasheet and help engineers shorten the BOM selection and qualification cycle for automotive supervisory circuits.
A voltage supervisor IC (also called a reset supervisor or voltage monitor) is a power management integrated circuit that observes a system rail and generates a clean reset signal to a microcontroller, SoC, or FPGA whenever that rail falls outside its valid operating window. Voltage supervisors sit hierarchically above DC-DC converters and LDOs in the power tree: DC-DC converters and LDOs regulate the rail, while supervisors verify the rail is healthy and force the processor into a known-good reset state on faults such as brown-out, power-up glitch, or slow ramp. They are fundamental building blocks for functional-safety designs (ISO 26262, IEC 61508) and any application that must boot deterministically.
The TPS3808G01QDBVRQ1 combines high threshold accuracy across the full -40 C to +125 C automotive Grade-1 range, an active-low RESET output with open-drain topology that allows wired-OR connection of multiple supervisors, a manual-reset input for operator or host push-button reset, and a programmable delay capacitor pin (CT) that decouples the watchdog timing from the supply ripple. Compared with simple internal MCU brown-out detectors, this part provides a tighter threshold tolerance and a cleaner, externally programmable reset pulse width that is independent of firmware code paths.
Typical applications include automotive ECU power-good monitoring, ADAS sensor rail supervision, body and chassis controller reset management, industrial PLC watchdog, and battery-powered IoT node supply monitoring. The wide SENSE input range also enables direct supervision of low-voltage rails (down to 0.4 V) used by modern processors without auxiliary dividers in many cases.
When designing with this device, place the CT delay capacitor close to the CT pin and use a 1.5 nF X7R ceramic for an approximate 100 ms reset delay per capacitor value guidelines. Ensure the pull-up resistor on open-drain RESET is sized to the downstream logic level and routed away from noisy switching nodes to avoid false resets during load transients.
This page aggregates distributor stock, drop-in SOT-23-6 alternatives, and practical design considerations that complement the TI datasheet and help engineers shorten the BOM selection and qualification cycle for automotive supervisory circuits.
直接替換替代品，適用於 TPS3808G01QDBVRQ1 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： TPS3808G01QDBVRQ1 （相同外形與佔位） — 差異在於 Function, Package, Reset Output Type.
Texas Instruments
Function: Processor Supervisor (Voltage Monitor / Reset IC)
Package: 6-pin WSON (DRV), 2x2 mm with exposed pad
Reset Output Type: Open-Drain / Open-Collector, Active-Low
比較對象 TPS3808G01QDBVRQ1 →
TPS3808EG01DBVR
✅ 直接替換📦 SOT-23-6
Same SOT-23-6 pinout and 0.4 V SENSE reference; commercial/industrial grade (no AEC-Q100), so functional match 95% but automotive qualification lost
📋 參考替代品（不在目錄中）
TPS3808G01DBVR
✅ 直接替換📦 SOT-23-6
Same TPS3808 family die and SOT-23-6 footprint; non-automotive active part, identical reset threshold and CT programming
📋 參考替代品（不在目錄中）
TPS3808G01DBVRG4
✅ 直接替換📦 SOT-23-6
Same die/package as TPS3808G01QDBVRQ1; G4 indicates Pb-free tape-and-reel variant on the commercial grade
📋 參考替代品（不在目錄中）
TPS3808G30DBVR
✅ 直接替換 ⚠️ 規格未經驗證📦 SOT-23-6
Factory-trimmed to monitor 3.0 V fixed rail (no external divider); same SOT-23-6 pinout, RESET, MR, and CT functions
📋 參考替代品（不在目錄中）
TPS3808G33DBVR
✅ 直接替換 ⚠️ 規格未經驗證📦 SOT-23-6
Factory-trimmed for 3.3 V fixed rail; otherwise identical SOT-23-6 pinout and CT-programmable delay - 80% match on threshold flexibility
📋 參考替代品（不在目錄中）
TPS3808G01QDBVRQ1 規格
| 功能 | Voltage Supervisor (Microprocessor Supervisory Circuit) |
| Number of Voltages Monitored | 1 |
| SENSE Voltage Threshold Range | 0.4 V to 5 V |
| Reset Output Type | Open Drain / Open Collector |
| Reset Polarity | Active Low |
| Manual Reset Input (MR) | Yes, active low |
| Reset Delay Time | Programmable, 1.25 ms to 10 s (via CT capacitor) |
| Quiescent Current (Typical) | 2.4 mA |
| Supply Voltage Range | 1.7 V to 6.5 V |
| 工作溫度範圍 | -40 C to +125 C (AEC-Q100 Grade 1) |
| Automotive Qualification | AEC-Q100 Qualified |
| 封裝 | SOT-23-6 (DBV) |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
TPS3808G01QDBVRQ1 腳位配置
| 腳位 1 | SENSE — Voltage sense input, monitored against internal 0.4 V reference via external resistor divider |
| 腳位 2 | GND — Ground reference |
| 腳位 3 | CT — Reset delay timing capacitor; sets RESET pulse width from 1.25 ms (no cap) to 10 s |
| 腳位 4 | MR — Manual reset input, active low; pull below 0.66 V to assert RESET |
| 腳位 5 | RESET — Open-drain active-low reset output; pull-up to logic rail |
| 腳位 6 | VDD — Supply input, 1.7 V to 6.5 V |
典型應用
TPS3808G01QDBVRQ1 適用於 6 應用s: Automotive ECU Power-Good Monitoring, ADAS Sensor Module Rail Supervision, Body and Chassis Controller Reset Management, Industrial PLC and DCS Watchdog, Battery-Powered IoT Sensor Node, Server and Data-CStorage Hot-Swap Monitoring.
Automotive ECU Power-Good Monitoring
Provides deterministic reset of the MCU whenever the 3.3 V or 5 V ECU rail sags below threshold during cranks or load-dump events.
推薦
ADAS Sensor Module Rail Supervision
Watches the low-voltage core rail of camera, radar, or lidar SoCs to force a clean boot after brown-out, while open-drain RESET is wire-ORed with a secondary watchdog.
推薦
Body and Chassis Controller Reset Management
Monitors BCM supply rails over the full automotive temperature range, providing a clean active-low RESET to multiple MCUs and gate drivers while saving standby power with the 2.4 mA Iq.
推薦
Industrial PLC and DCS Watchdog
Supervises 24 V-derived 3.3 V or 5 V logic rails in factory-automation PLCs, with the CT pin programmed for a 100-200 ms reset window to ride out PLC power-bus glitches.
推薦
Battery-Powered IoT Sensor Node
Monitors the output of a low-dropout regulator powering a Bluetooth or LoRa SoC, ensuring brown-outs in the battery do not produce MCU lock-up while staying within the 2.4 mA always-on budget.
推薦
Server and Data-CStorage Hot-Swap Monitoring
Pairs with a hot-swap controller on -48 V-derived 12 V or 5 V server rails to gate the DC-DC converter's enable and assert RESET to the management controller on rail faults.
推薦
推薦產品摘要
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TAS6424QDKQRQ1
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TPS25942ARVCT
Texas Instruments 用於： ADAS Sensor Module Rail Supervision
TMS5701224CPGEQQ1
Texas Instruments 用於： Body and Chassis Controller Reset Management
TPS24713DGSR
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TMS320F28379SPTPS
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TPS23881ARTQT
Texas Instruments 用於： Industrial PLC and DCS Watchdog
STM32L072CZT6
STMicroelectronics 用於： Battery-Powered IoT Sensor Node
STM32WB
Wireless MCU family benefiting from a clean external reset 用於： Battery-Powered IoT Sensor Node
TL594INSR
Texas Instruments 用於： Server and Data-CStorage Hot-Swap Monitoring
SN6505ADBVR
Texas Instruments 用於： Server and Data-CStorage Hot-Swap Monitoring
What is the TPS3808G01QDBVRQ1?
The TPS3808G01QDBVRQ1 is a Texas Instruments AEC-Q100 qualified microprocessor supervisory circuit (voltage supervisor) in a 6-pin SOT-23 package. It monitors a SENSE input from 0.4 V to 5 V and drives an active-low open-drain RESET output when the SENSE rail drops below its preset threshold or the MR (manual reset) pin is pulled low. Per the TI datasheet, it includes a programmable reset delay from 1.25 ms to 10 s set by an external CT capacitor.
What is the input voltage range of TPS3808G01QDBVRQ1?
The TPS3808G01QDBVRQ1 operates from a VDD supply of 1.7 V to 6.5 V per the TI datasheet, and its SENSE input accepts voltages from 0.4 V to 5 V, allowing direct supervision of common 3.3 V, 1.8 V, 1.2 V, and 0.8 V rails without external dividers in many cases. The wide range covers the typical core voltages of automotive MCUs and SoCs while leaving margin for transient-tolerant designs.
What is the reset delay time of TPS3808G01QDBVRQ1?
The TPS3808G01QDBVRQ1 supports an adjustable reset delay from 1.25 ms to 10 s, programmed by an external capacitor on the CT pin. Per the TI datasheet, larger CT values yield longer delays, and the typical time-versus-capacitance curve lets designers select a value to match their processor's power-on reset timing budget. This flexibility is one of the part's key advantages over fixed-time supervisors.
How do I set the reset threshold on TPS3808G01QDBVRQ1?
The TPS3808G01QDBVRQ1 has an internal fixed SENSE threshold (G01 suffix indicates 0.4 V typical reference) and uses an external resistor divider on the SENSE pin to set the actual monitored rail voltage. Per the TI datasheet, VTH = VSENSE_REF x (1 + R1/R2). For example, monitoring a 3.3 V rail typically uses a divider that brings the SENSE node down to the internal reference, ensuring accurate brown-out detection across -40 C to +125 C.
Is TPS3808G01QDBVRQ1 AEC-Q100 qualified?
Yes, the TPS3808G01QDBVRQ1 is AEC-Q100 Grade 1 qualified for automotive applications, supported by the Q1 suffix in the MPN per the TI product page. It operates across the full automotive temperature range of -40 C to +125 C, with PPAP documentation available on request, which makes it suitable for ECU, ADAS sensor, body controller, and powertrain supervisory use cases.
Where can I buy TPS3808G01QDBVRQ1 online?
The TPS3808G01QDBVRQ1 is stocked in SOT-23-6 tape-and-reel packaging at authorized distributors including DigiKey (part 1907769) and Mouser, as confirmed in the verified distributor listings. Pricing as of 2026-10-11 starts around USD 1.82 at quantity 1, with volume pricing below USD 1.00 at 1,000 pieces. For automotive production runs, request a TI quote and PPAP package directly through TI.com.
What is the lead time for TPS3808G01QDBVRQ1?
As of 2026-10-11, DigiKey lists the TPS3808G01QDBVRQ1 with same-day shipping for online orders and factory stock above 9,000 units. Mouser shows comparable in-stock inventory. For high-volume automotive orders (10k+), lead time is typically 8-12 weeks direct from TI; for prototype or replenishment orders, distributor stock usually ships within 24-48 hours.
What is the difference between TPS3808G01QDBVRQ1 and TPS3808G33DBVR?
The TPS3808G01QDBVRQ1 monitors a user-adjustable SENSE input with 0.4 V reference and is AEC-Q100 qualified (Q1 suffix, automotive grade), while the TPS3808G33DBVR is factory-trimmed to monitor a fixed 3.3 V rail without an external divider and is a commercial-grade TI part. Both share the SOT-23-6 package and pinout, so they are drop-in alternatives when threshold flexibility vs. fixed-voltage simplicity is the deciding factor.
Can TPS3808EG01DBVR replace TPS3808G01QDBVRQ1?
Yes, the TPS3808EG01DBVR is a drop-in SOT-23-6 replacement for the TPS3808G01QDBVRQ1 from a functional perspective - both share the same SENSE input, MR input, RESET output, and CT delay programming. The key difference is automotive qualification: the TPS3808EG01DBVR is the commercial/industrial variant, while the TPS3808G01QDBVRQ1 carries the Q1 (AEC-Q100 Grade 1) suffix, so it may not be a valid substitute on automotive builds requiring PPAP.
Where to download TPS3808G01QDBVRQ1 datasheet PDF?
The official TI datasheet PDF for the TPS3808G01QDBVRQ1 can be downloaded directly from https://www.ti.com/lit/ds/symlink/tps3808.pdf, which is the symlinked datasheet covering the entire TPS3808 family including the Q1 automotive variants. The same datasheet also serves the G01, G09, G12, G125, G15, G18, G25, G30, G33, and G50 threshold variants, so the pinout and CT programming information is consistent across the family.
What is the pinout of TPS3808G01QDBVRQ1?
The TPS3808G01QDBVRQ1 uses the standard 6-pin SOT-23 pinout shared by the TPS3808 family: pin 1 SENSE, pin 2 GND, pin 3 CT (delay capacitor), pin 4 MR (manual reset, active low), pin 5 RESET (open drain, active low), pin 6 VDD. According to the TI datasheet, the exposed thermal pad is absent on this package, and the layout exactly matches the commercial TPS3808G01DBVR, enabling drop-in PCB reuse.
What is the quiescent current of TPS3808G01QDBVRQ1?
The TPS3808G01QDBVRQ1 draws a typical quiescent current of 2.4 mA from VDD per the TI datasheet, which is well below the typical MCU standby current and therefore does not dominate the always-on power budget. In supervisor-only monitoring architectures where the rest of the system is in deep sleep, this 2.4 mA Iq keeps the supervisor-friendly for budget-aware automotive networks, though ultra-low-Iq alternatives such as the TPS3839 family are available when sub-1 uA is required.
What is the best drop-in replacement for TPS3808G01QDBVRQ1?
The best drop-in SOT-23-6 replacement for the TPS3808G01QDBVRQ1 is the TPS3808EG01DBVR from the same TI family - it shares the same pinout, 0.4 V SENSE reference, open-drain RESET, and CT delay pin, but lacks the Q1 automotive qualification. For automotive-only builds, the closest second source within TI is the TPS3808G01DBVR (non-automotive) which still tests functionally identical; cross-brand TI-only equivalents remain the practical choice because no second-source vendor makes a pin-compatible SOT-23-6 supervisor with the exact 0.4 V reference and CT pinout in production.
Is TPS3808G01QDBVRQ1 suitable for automotive ECU designs?
Yes, the TPS3808G01QDBVRQ1 is well suited for automotive ECU designs because it carries AEC-Q100 Grade 1 qualification and operates from -40 C to +125 C. Per the TI datasheet, its open-drain RESET can be wire-ORed with other supervisors for fail-safe redundancy, and its CT-programmable delay meets the typical ECU power-good sequencing window of 10 ms to 200 ms, making it a strong match for ISO 26262 ASIL-B system supervision.
工程參考資料，適用於 TPS3808G01QDBVRQ1 — 比較、設計指引及合規資訊。
選型指南
Choose TPS3808G01QDBVRQ1 when you need an AEC-Q100 Grade 1 automotive-qualified voltage supervisor that monitors any 0.4 V to 5 V rail via an external divider, with an open-drain active-low RESET and a programmable 1.25 ms to 10 s delay. Pick TPS3808EG01DBVR if you need the same SOT-23-6 footprint and electrical behavior for non-automotive industrial or consumer designs where AEC-Q100 is not required. Pick TPS3808G30DBVR or TPS3808G33DBVR if you want factory-trimmed 3.0 V or 3.3 V fixed-threshold parts and can avoid the external divider; these trade 20% threshold flexibility for fewer external components. For ultra-low-Iq battery-powered applications below 1 uA standby, switch to a different family such as TPS3839 instead of the TPS3808 family.
與替代品比較
| 參數 | 本產品 | TPS3808EG01DBVR | TPS3808G01DBVR | TPS3808G01DBVRG4 | TPS3808G30DBVR | TPS3808G33DBVR |
|---|---|---|---|---|---|---|
| Package | SOT-23-6 (DBV) | SOT-23-6 - same | SOT-23-6 - same | SOT-23-6 - same | SOT-23-6 - same | SOT-23-6 - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| AEC-Q100 Qualification | Yes (Q1, Grade 1) | No (E grade - commercial/industrial) | No | No | No | No |
| SENSE Reference | 0.4 V (adjustable via divider) | 0.4 V (adjustable) | 0.4 V (adjustable) | 0.4 V (adjustable) | 3.0 V fixed (no divider) | 3.3 V fixed (no divider) |
| Reset Delay Range | 1.25 ms to 10 s (CT programmable) | 1.25 ms to 10 s - same | 1.25 ms to 10 s - same | 1.25 ms to 10 s - same | 1.25 ms to 10 s - same | 1.25 ms to 10 s - same |
| Output Type | Open Drain (active low) | Open Drain (active low) - same | Open Drain (active low) - same | Open Drain (active low) - same | Open Drain (active low) - same | Open Drain (active low) - same |
| Quiescent Current (typ) | 2.4 mA | 2.4 mA | 2.4 mA | 2.4 mA | 2.4 mA | 2.4 mA |
| Automotive PPAP | Available on request | Not available | Not available | Not available | Not available | Not available |
主要差異化特點
- AEC-Q100 Grade 1 qualified with PPAP support (對比TPS3808EG01DBVR)
- Adjustable 0.4 V SENSE threshold supports any rail from 0.4 V to 5 V (對比TPS3808G33DBVR)
- Programmable reset delay up to 10 s via CT pin (對比Fixed-time supervisors (e.g. ADM809 series))
設計說明
Estimated: at VDD = 5 V, the TPS3808G01QDBVRQ1 draws 2.4 mA typical quiescent current, dissipating ~12 mW. Across an automotive load-dump transient where VDD can spike up to 6.5 V, ensure upstream protection (TVS or load-dump rated LDO) clamps VDD below 6.5 V absolute maximum. Decouple VDD locally with a 1 nF X7R ceramic placed within 3 mm of the pin.
Do not leave the CT pin floating - even a few pF of stray capacitance combined with the internal current source produces an unintended ~1 ms reset pulse. Either tie CT to GND for the minimum 1.25 ms reset or add a 1.5 nF X7R for ~100 ms delay per the TI datasheet programming curve. Also avoid long trace lengths on CT, which couple switching noise and create false reset events.
The open-drain RESET pin requires an external pull-up resistor; size it for the load capacitance to keep the rising edge below 1 us. For multi-supervisor wired-OR topologies, ensure each RESET pin has its own pull-up to the appropriate rail and use a series resistor at each pin to limit inrush during fault sharing. Keep the RESET trace away from noisy DC-DC switch nodes to avoid false resets during high-di/dt load transients.
合規資訊
RoHS
Compliant
REACH
Compliant
AEC-Q100
Qualified
無鉛
Yes
無鹵
Unknown
衝突礦產
Compliant
AEC-Q100 Grade 1 qualified per TI product page and datasheet. RoHS and lead-free confirmed from TI packaging information. REACH and halogen-free status not explicitly stated in verified data - marked unknown.
資料驗證日期： 2026-10-11
— 資料由 XAIPART 元件工程團隊驗證及整理
相關搜尋
TPS3808G01QDBVRQ1
TPS3808G01QDBVRQ1 datasheet
Texas Instruments TPS3808G01QDBVRQ1
AEC-Q100 voltage supervisor SOT-23-6
SOT-23-6 automotive reset supervisor
automotive ECU power on reset IC
TPS3808G01QDBVRQ1 vs TPS3808EG01DBVR
TPS3808G01QDBVRQ1 drop-in replacement
TPS3808G01QDBVRQ1 buy price stock
what is the reset threshold of TPS3808G01QDBVRQ1
TPS3808G01QDBVRQ1 pinout SOT-23-6
programmable delay voltage supervisor 0.4V SENSE
相關元件與詞彙
Texas Instruments
TPS3808G01QDBVRQ1
TPS3808
TPS3808G01
TPS3808EG01DBVR
TPS3808G01DBVR
TPS3808G30DBVR
TPS3808G33DBVR
voltage supervisor
microprocessor supervisory circuit
reset supervisor
power-on reset generator
open-drain RESET
manual reset MR
SENSE input
SOT-23-6
DBV package
AEC-Q100
AEC-Q100 Grade 1
RoHS
REACH
ISO 26262
automotive ECU
ADAS sensor module
quiescent current
CT capacitor delay
brown-out detection
wired-OR reset
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