TPS74601PQWDRVRQ1 - 1A Automotive LDO w/ PG | WSON-6 | Texas Instruments
MPN： TPS74601PQWDRVRQ1 ✓ 啟用中TPS74601PQWDRVRQ1 概覽
An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage is very close to the output voltage. It belongs to the broader power-management-IC hierarchy: LDO -> linear regulator -> voltage regulator -> power management IC -> semiconductor. Unlike a switching regulator, an LDO does not introduce switching noise, making it ideal for post-regulation after a noisy DC-DC converter or for direct battery-powered rails.
Key features of the TPS74601PQWDRVRQ1 include 38 dB PSRR at 100 kHz, 895 mV maximum dropout at 1 A load, integrated UVLO, over-current protection, over-temperature protection, and short-circuit protection. The wettable-flank 6-WSON package (2x2 mm) is significantly smaller than competing 8-pin alternatives and supports automated optical inspection (AOI) for automotive PCB assembly lines.
Architecturally, the TPS746-Q1 uses a P-channel MOSFET pass element that eliminates the need for a bias supply and minimizes ground current variation across load. The integrated open-drain PG pin flags output-voltage readiness for downstream MCUs and FPGAs, simplifying multi-rail sequencing in zonal automotive E/E architectures.
Typical applications include automotive camera modules, ADAS sensor power, body-control modules, infotainment processors, and post-regulation for switching converters. The -Q1 suffix indicates AEC-Q100 qualification for Grade 1 automotive environments (-40C to +125C junction).
When designing with this device, place input/output ceramics as close to the pins as possible and observe the 1.7 A typical current limit when calculating transient load response. The PG pull-up resistor should be tied to a known-good rail and never left floating.
This page synthesizes distributor pricing, AEC-Q100-qualified drop-in alternatives, and practical design notes not aggregated on a single manufacturer page.
直接替換替代品，適用於 TPS74601PQWDRVRQ1 — 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： TPS74601PQWDRVRQ1 （相同外形與佔位） — 差異在於 Package, Maximum Output Current, Output Type, Automotive Qualification, Dropout Voltage.
TPS74601PDRVR
✅ 直接替換📋 參考替代品（不在目錄中）
TPS74501PQWDRVRQ1
✅ 直接替換聯絡詢價
查看資料表 →TPS74601PBDRVR
✅ 直接替換聯絡詢價
查看資料表 →TPS74601PQWDRVRQ1 最大額定值與電氣特性
| 拓撲 | LDO (Low-Dropout) Linear Regulator |
| 輸出類型 | Adjustable (0.55 V to 5.5 V) |
| 最大輸出電流 | 1 A |
| 輸入電壓範圍 | 1.5 V to 6.0 V |
| 壓降電壓 | 895 mV (max at 1 A) |
| 輸出雜訊 | 53 uVrms |
| PSRR | 38 dB at 100 kHz |
| 靜態電流 | 25 uA (typical) |
| 電源良好輸出 | Yes (open-drain) |
| 工作接面溫度 | -40C to +150C |
| Automotive Qualification | AEC-Q100 Grade 1 (-Q1) |
| 封裝 | 6-WSON (2 mm x 2 mm) with wettable flanks |
| Protection Features | UVLO, OCP, OTP, SCP |
| 安裝類型 | Surface Mount |
| MSL 等級 | 2 (per JEDEC J-STD-020) |
| RoHS 狀態 | Compliant |
TPS74601PQWDRVRQ1 腳位配置
| 腳位 1 | EN — Enable input (active high); pull high to enable regulator, low for shutdown. Do not leave floating. |
| 腳位 2 | GND — Ground reference; connect to PCB ground plane with multiple vias for thermal dissipation. |
| 腳位 3 | IN — Input voltage supply (1.5 V to 6.0 V); place 1 uF ceramic bypass capacitor as close as possible. |
| 腳位 4 | OUT — Regulated output voltage (0.55 V to 5.5 V adjustable); place output capacitor at this pin. |
| 腳位 5 | PG — Power-good open-drain output; pulls low when VOUT < 90% of nominal. Connect pull-up resistor to a known-good rail. |
| 腳位 6 | ADJ — Adjustable feedback node; connect external resistor divider to set output voltage. Reference voltage 0.55 V typical. |
典型應用
TPS74601PQWDRVRQ1 適用於 6 應用s: Automotive ADAS Camera Modules, Body Control Modules (BCM), Automotive Infotainment SoC Power, Industrial Sensor and IoT Gateways, FPGA Core and Auxiliary Rail Supply, Medical and Diagnostic Equipment.
Automotive ADAS Camera Modules
The TPS74601PQWDRVRQ1 is widely deployed as the post-DC/DC regulator for automotive front-view camera PMICs. With 53 uVrms output noise and 38 dB PSRR at 100 kHz, it cleans switching ripple before it reaches the image sensor's analog AVDD rail, preserving signal-to-noise ratio critical for object-detection algorithms. Its 1 A continuous output comfortably supports image sensor plus ISP SoC transient loads, while the 6-WSON (2x2 mm) wettable-flank footprint keeps PCB area minimal. AEC-Q100 Grade 1 qualification (-40C to +125C junction) ensures reliable operation in sealed under-hood camera housings. Power-good output simplifies MCU sequencing for the serializer link.
推薦
Body Control Modules (BCM)
In BCMs distributed across vehicle zonal architectures, the TPS74601PQWDRVRQ1 powers always-on rails such as CAN transceivers and low-side drivers. Its 25 uA quiescent current minimizes parasitic drain on the vehicle battery during key-off periods, a critical parameter for OEM quiescent-current budgets. The integrated power-good output can drive an MCU interrupt to signal regulator readiness during wake-up sequencing. AEC-Q100 qualification, wettable flanks, and 1 A capacity make it ideal for under-dash PCB environments with high thermal stress. The wide 1.5 V to 6.0 V input tolerates load-dump transients up to 40 V through upstream protection.
推薦
Automotive Infotainment SoC Power
Cockpit and infotainment SoCs require multiple low-voltage rails (1.0 V core, 1.8 V DDR, 3.3 V I/O) generated from a 12 V automotive bus. The TPS74601PQWDRVRQ1 serves as a post-regulator after the main 5 V buck converter, providing a clean 1.8 V or 3.3 V rail for analog audio, display drivers, or PHY interfaces. Its 38 dB PSRR at 100 kHz effectively attenuates residual switching ripple from the upstream converter, preserving audio SNR and HDMI/DSI link signal integrity. Compact 6-WSON footprint allows placement close to the SoC pins, minimizing PCB parasitic inductance.
推薦
Industrial Sensor and IoT Gateways
Although AEC-Q100-qualified, the TPS74601PQWDRVRQ1 is equally valuable in industrial PLC sensor modules and IoT gateways requiring compact, efficient post-regulation. The 25 uA IQ supports battery-backed designs with sleep-mode operation, while 1 A output covers downstream MCU and radio module surges. The WSON-6 (2x2 mm) package is ideal for space-constrained sensor nodes. Adjustable output (0.55 V to 5.5 V) supports 1.8 V, 3.3 V, and 5 V rails from a single BOM line, simplifying inventory across product variants.
推薦
FPGA Core and Auxiliary Rail Supply
Modern FPGAs require multiple low-voltage rails (typically 0.85 V to 3.3 V) with tight tolerance and low noise. The TPS74601PQWDRVRQ1 provides a clean auxiliary rail for FPGA transceivers, GPIO banks, or configuration flash memory. Its 38 dB PSRR at 100 kHz effectively suppresses noise from upstream switching converters that could couple into sensitive PLL domains. Power-good output enables the FPGA's CONF_DONE or DONE pin monitoring for safe startup sequencing. AEC-Q100 qualification is overkill for non-automotive FPGAs but provides design margin for harsh industrial environments.
推薦
Medical and Diagnostic Equipment
Portable medical devices (blood glucose meters, pulse oximeters, patient monitors) require clean, stable power for analog front ends and AFE ASICs. The TPS74601PQWDRVRQ1's 53 uVrms noise floor prevents pollution of microvolt-level bio-signal measurements, while 1 A output supports simultaneous AFE, MCU, and Bluetooth radio operation. AEC-Q100 automotive-grade reliability translates to exceptional long-term reliability for medical applications. The 6-WSON footprint enables miniaturized wearables with disposable form factors. Integrated protections (OCP, OTP, SCP) safeguard against fault conditions in patient-contact devices.
推薦
推薦產品摘要
工程參考資料，適用於 TPS74601PQWDRVRQ1 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TPS74601PDRVR | TPS74501PQWDRVRQ1 | TPS74601PBDRVR |
|---|---|---|---|---|
| Package | 6-WSON (2x2 mm) | 6-WSON (2x2 mm) - same | 6-WSON (2x2 mm) - same | 6-WSON EP - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Current | 1 A | 1 A | 0.5 A | 1 A |
| Output Voltage Range | 0.55 V to 5.5 V (adjustable) | 0.55 V to 5.5 V (adjustable) | 0.55 V to 5.5 V (adjustable) | 0.55 V to 5.5 V (adjustable) |
| Input Voltage Range | 1.5 V to 6.0 V | 1.5 V to 6.0 V | 1.5 V to 6.0 V | 1.5 V to 6.0 V |
| Quiescent Current | 25 uA (typ) | 25 uA (typ) | 25 uA (typ) | 25 uA (typ) |
| Dropout Voltage (max at 1A) | 895 mV | 895 mV | 895 mV (at 500 mA) | 895 mV |
| Automotive Qualification | AEC-Q100 Grade 1 (-40C to +125C Tj) | Industrial (no AEC-Q100) | AEC-Q100 Grade 1 | Industrial (no AEC-Q100) |
主要差異化特點
- Wettable-flank 6-WSON package enables AOI in automotive lines (對比Generic 1A LDOs in non-wettable packages)
- 25 uA quiescent current is best-in-class for 1A LDO (對比TPS74601PDRVR (industrial variant))
- Drop-in family compatibility with 500 mA TPS745 (對比TPS74501PQWDRVRQ1)
設計說明
At VIN=5 V, VOUT=3.3 V, and 1 A continuous load, the TPS74601PQWDRVRQ1 dissipates approximately 1.7 W. The 6-WSON (2x2 mm) package has limited thermal mass; solder the exposed thermal pad (DAP) to a GND copper pour with at least 4 thermal vias to a bottom-layer ground plane. Estimated: at theta_JA ~65 C/W on a 1-oz 4-layer board with 25 mm^2 copper pour, junction temperature rises ~110 C above ambient. For continuous 1 A operation above 70 C ambient, derate load or add cooling.
Place a 1 uF X7R ceramic input capacitor within 1 mm of the IN pin (pin 3) to suppress high-frequency noise and stabilize the input. Place a 1 uF to 10 uF X7R output capacitor at the OUT pin (pin 4). Keep the ADJ feedback trace (pin 6) away from noisy switching nodes and route it in a Kelvin connection directly to the output capacitor's positive terminal. Avoid routing the PG signal trace (pin 5) across switching nodes to prevent false triggers.
Never leave the EN pin (pin 1) floating - this can cause unpredictable startup behavior. Tie EN to IN via a 100 kohm resistor if unused, or drive it directly from a logic rail. The PG output (pin 5) is open-drain and requires an external pull-up resistor to a known-good rail (typically VOUT or a logic rail); leaving it floating will cause it to float at undefined logic levels. For reverse-battery protection, add an external P-FET in the input path.
For automotive PCB designs requiring wettable-flank inspection, ensure the WSON package side pads have a minimum 0.2 mm solder fillet visible after reflow. The exposed thermal pad (DAP) must be soldered for both thermal and mechanical reliability - TI recommends a 4x4 via array (0.3 mm vias, 1.0 mm pitch) connecting the DAP to internal GND layers.
合規資訊
AEC-Q100 Grade 1 qualified per TI datasheet. RoHS/REACH compliant per DigiKey/Mouser listings. -Q1 suffix denotes automotive grade; non-suffixed TPS746 variants are industrial grade.
