TPS3711DDCR - 36V Wide-Supply Voltage Detector | Texas Instruments
부품 번호: TPS3711DDCR ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $0.89 | $0.89 |
| 10 | $0.78 | $7.80 |
| 100 | $0.62 | $62.00 |
| 500 | $0.49 | $245.00 |
| 1,000 | $0.41 | $410.00 |
| 3,000 | $0.34 | $1,020.00 |
TPS3711DDCR 개요
What is a voltage supervisor (also called a voltage detector or reset IC)? A voltage supervisor is a power-management IC that continuously monitors a supply rail and asserts a reset or fault signal when the rail falls outside a programmed window. Supervisors sit hierarchically under power management ICs, alongside LDOs, DC-DC converters, and battery monitors. They are essential building blocks in microcontrollers, SoCs, and FPGA-based systems, where brown-outs or power-rail glitches can cause latch-up, memory corruption, or undefined logic states.
Key features include a wide 1.8 V to 36 V operating range, internal 400 mV ±1.5% reference, open-drain output capable of pulling to 25 V, low quiescent current in the microamp range, and a small SOT-23-6 footprint. The TPS3711 uses OUT driven low when the voltage at the SENSE pin drops below the negative threshold and returns high when SENSE recovers, giving designers a clean logic-level reset signal with a known pull-up reference.
The TPS3711DDCR uses a precision analog comparator with an internal bandgap-derived 400 mV reference. The open-drain output stage allows the reset signal to be pulled up to any voltage up to 25 V, independent of the device supply, which is essential for interfacing low-voltage MCUs to higher-voltage rails. The SOT-23-THIN package provides a compact footprint while maintaining industrial -40°C to +125°C operating range.
Typical applications include industrial PLCs and process controllers, automotive body and infotainment modules, battery management systems, microcontroller brown-out detection, and overvoltage/undervoltage protection in 12 V and 24 V industrial buses. The wide supply range is particularly valuable for 24 V industrial systems where traditional 5 V-only supervisors cannot operate directly from the bus.
When designing with the TPS3711, select the external resistor divider so that the sensed voltage equals 400 mV at the desired threshold. A 100 kΩ to 1 MΩ total resistance keeps quiescent current low without making the SENSE pin noise-sensitive. Always pull OUT up to a valid logic rail through a resistor; do not leave it floating.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
드롭인 대체품: TPS3711DDCR — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: TPS3711DDCR (동일 폼 팩터 및 풋프린트) — 차이점: MSL Level, Operating Temperature Range, Output Type.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
TPS3711DDCT
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TPS3700DDCR
✅ 드롭인✓ 재고 있음
$0.62 / 개
데이터시트 보기 →TPS3702AX33DDCR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
MAX16054
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
ADM8339
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TPS3711DDCR 사양
| 토폴로지 | Voltage Detector / Supervisor |
| Number of Supervisors Monitored | 1 |
| 출력 유형 | Open-Drain / Open-Collector |
| Supply Voltage Range | 1.8 V to 36 V |
| Monitored Voltage (SENSE) Threshold | 400 mV (internal reference) |
| Open-Drain Output Voltage Rating | 25 V (max pull-up) |
| 동작 온도 범위 | -40°C to +125°C |
| 패키지 | SOT-23-THIN (DDC), 6 pins |
| 실장 유형 | Surface Mount |
| MSL 레벨 | 1 (unlimited) |
| RoHS 상태 | Compliant |
| Lead-Free | Yes |
TPS3711DDCR 핀 구성
| 핀 1 | OUT — Open-drain comparator output; pull-up to logic rail through external resistor |
| 핀 2 | GND — Ground reference |
| 핀 3 | SENSE — Voltage sense input; connect to external resistor divider |
| 핀 4 | NC — Not connected (per datasheet) |
| 핀 5 | VDD — Supply voltage input, 1.8 V to 36 V |
| 핀 6 | EPAD — Exposed thermal pad; tie to GND for optimal thermal dissipation |
일반적인 애플리케이션
TPS3711DDCR 적합 용도: 6 애플리케이션s: Industrial 24V PLC Brown-Out Detection, Automotive 12V Battery Monitoring, Microcontroller Brown-Out Reset, Battery Management System Cell Monitoring, Overvoltage Protection in 12V Industrial Buses, Power-Supply Voltage Monitoring.
Industrial 24V PLC Brown-Out Detection
The TPS3711DDCR's 1.8 V to 36 V supply range lets it operate directly from a 24 V industrial bus without pre-regulation, simplifying PLC power-supply design. With an external resistor divider, the SENSE pin can be set to assert OUT low when the 24 V bus sags below 21 V (typical PLC hold-up threshold). The 25 V-rated open-drain output can pull directly into a 3.3 V MCU reset pin via a 10 kΩ pull-up, providing a clean logic-level reset during brown-out events that would otherwise cause undefined MCU behavior.
추천
Automotive 12V Battery Monitoring
In automotive body and infotainment systems, the TPS3711DDCR monitors the 12 V battery rail for undervoltage during engine cranking. The internal 400 mV reference combined with an external divider (e.g., 100 kΩ and 4.7 kΩ) sets the detection threshold around 9 V, well below the typical 10.5 V cranking sag. The -40°C to +125°C operating range covers the full automotive temperature window, and the SOT-23-6 footprint saves board space in tight ECU layouts. Note: this part is not AEC-Q100 qualified - for full automotive-grade designs, consider a Q-qualified alternative.
추천
Microcontroller Brown-Out Reset
The TPS3711DDCR provides a hardware reset signal to MCUs running on 3.3 V or 5 V rails, ensuring clean startup when power is applied and recovery from brown-out conditions. The wide 1.8 V to 36 V supply range means the same part can monitor a 3.3 V core rail or a 12 V intermediate bus without modification. The open-drain output with external pull-up integrates directly with any MCU reset input, and the internal hysteresis prevents output chatter when the rail voltage hovers near the threshold.
추천
Battery Management System Cell Monitoring
In multi-cell Li-ion battery packs, the TPS3711DDCR monitors individual cell voltages via an external divider chain. The 36 V supply range accommodates 7-10 cell packs directly, and the 400 mV reference can be scaled per cell using precise resistor dividers. The microamp quiescent current is critical for battery-powered systems to avoid draining cells during storage. The open-drain OUT allows multiple TPS3711 devices to wire-OR into a single MCU fault input, simplifying pack-level fault aggregation.
추천
Overvoltage Protection in 12V Industrial Buses
For 24V or 12V industrial field-bus systems subject to transients and load-dump events, the TPS3711DDCR can be configured as an overvoltage detector by adjusting the resistor divider ratio. The 36 V absolute-max supply allows the device to survive overvoltage transients directly, and the open-drain output can drive a crowbar FET or relay to disconnect downstream loads. The 1.5% reference accuracy ensures predictable trigger thresholds across production units, critical for safety-rated systems.
추천
Power-Supply Voltage Monitoring
Switching power supplies and isolated DC-DC converters benefit from secondary-side voltage supervision using the TPS3711DDCR. The wide input range accommodates various intermediate bus voltages (12 V, 15 V, 24 V) without requiring a separate auxiliary supply rail. The internal comparator's small propagation delay enables fast response to output-voltage collapse, protecting downstream ASICs and FPGAs from undervoltage-induced latch-up. The SOT-23-6 footprint suits space-constrained POL modules and brick-style converters.
추천
추천 제품 요약
엔지니어링 참조 데이터: TPS3711DDCR — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | TPS3711DDCT | TPS3700DDCR | TPS3702AX33DDCR | MAX16054 | ADM8339 |
|---|---|---|---|---|---|---|
| Package | SOT-23-6 (DDC) | SOT-23-6 (DDC) - same | SOT-23-6 (DDC) - same | SOT-23-6 (DDC) - same | SOT-23-6 (DDC) - same | SOT-23-6 (DDC) - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Maxim Integrated | Analog Devices |
| Supply Voltage Range | 1.8 V to 36 V | 1.8 V to 36 V | 1.8 V to 36 V | 1.8 V to 36 V | 2.5 V to 5.5 V | 1.0 V to 5.5 V |
| Output Type | Open-Drain | Open-Drain | Open-Drain | Open-Drain | Open-Drain | Open-Drain |
| Threshold Setting | Adjustable via external divider (400 mV internal reference) | Adjustable via external divider (400 mV internal reference) | Adjustable via external divider (400 mV internal reference) | Fixed 3.3 V threshold (factory-trimmed) | Fixed factory-trimmed threshold | Adjustable via external divider |
| Number of Channels | 1 | 1 | 1 (window detection) | 1 | 1 | 2 (dual rail) |
| Open-Drain Pull-up Voltage Rating | 25 V | 25 V | 25 V | 25 V | 5.5 V | 5.5 V |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +85°C | -40°C to +125°C |
주요 차별점
- Widest supply voltage range in SOT-23-6 supervisor class (vs MAX16054)
- Adjustable threshold via simple resistor divider (vs TPS3702AX33DDCR)
- Higher open-drain pull-up voltage rating (vs ADM8339)
설계 노트
Do not leave the OUT pin floating - the open-drain architecture requires an external pull-up resistor (typically 10 kΩ to 100 kΩ) tied to a valid logic rail up to 25 V. Also ensure the SENSE pin resistor divider total resistance is between 100 kΩ and 1 MΩ: too low draws excessive current from the monitored rail, too high makes the SENSE pin noise-sensitive. For 24 V bus monitoring, use 1 MΩ total to keep quiescent current under 25 µA.
Place the TPS3711DDCR close to the monitored voltage source to minimize ground-bounce and SENSE-pin trace noise. Use a 0.1 µF decoupling capacitor on VDD placed within 5 mm of pin 5, and tie the exposed pad (pin 6) to a solid ground pour to improve thermal dissipation. Avoid routing noisy switching signals near the SENSE pin to prevent false triggering. The SOT-23-6 (DDC) package has 0.95 mm pitch - follow JEDEC SOT-23 land pattern for reliable reflow.
Estimated: at 36 V supply and unloaded OUT, the TPS3711 draws microamp-level quiescent current; total dissipation is well under 1 mW and self-heating is negligible. The SOT-23-6 (DDC) thermal resistance (θJA) is approximately 200°C/W on a 1 oz copper JEDEC test board. Junction temperature rise above ambient is therefore well below 1°C in normal operation. No heatsinking required for this part class.
규정 준수 정보
RoHS and REACH compliant per TI product page; not AEC-Q100 qualified (use Q-suffix variant for automotive). Lead-free (Pb-free) reflow compatible per JEDEC J-STD-020.
