TPS3701DDCT - 36V Dual Window Comparator | Texas Instruments
MPN： TPS3701DDCT ✓ 啟用中TPS3701DDCT 概覽
A window comparator is a voltage detector that checks whether an input voltage lies between programmable upper and lower thresholds. Unlike a general-purpose comparator, this device integrates two comparison channels and a reference, allowing one IC to monitor both rail boundaries. In the power-management hierarchy, it belongs to the comparator and voltage-supervisor family rather than a power-regulator family.
Key features include the 1.8 V to 36 V supply range, a 400 mV internal reference, two open-drain outputs, and monitoring flexibility through external resistor networks. The open-drain outputs can be pulled up to an appropriate external voltage, allowing wired interface use and flexible system-level signaling. Reported low quiescent current is approximately 7 µA typical, making the device suitable for low-power monitoring systems.
The TPS3701 can operate as a window detector or as two independent voltage monitors. The monitored thresholds are established with external resistors, while the internal reference provides the comparison basis. Its high-voltage operating range allows monitoring of industrial supplies and other rails where input transients or nominal voltages exceed the range of simpler low-voltage supervisors. Response time is reported in distributor data as approximately 155 µs.
Typical applications include industrial automation, battery systems, power-supply protection, sensor interfaces, and embedded control systems. It is especially useful when a system must assert separate fault signals when a monitored voltage becomes too high or too low. Because the outputs are open-drain, pull-up resistors are required unless the output is connected directly to a compatible pull-up arrangement.
Designers should verify the full datasheet pinout, threshold tolerances, timing, output ratings, and capacitor or resistor recommendations before production. The SOT-23-THIN footprint supports compact layouts, but the open-drain pins and monitor-input network require careful routing. For replacements, compare the complete pinout and threshold architecture rather than selecting a part only by supply voltage or package name. This page combines verified manufacturer information, distributor pricing references, and practical design guidance.
直接替換替代品，適用於 TPS3701DDCT — 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： TPS3701DDCT （相同外形與佔位） — 差異在於 Package, Output Type, Operating Temperature Range, Number of Channels, Input Bias Current.
TPS3701DDCR
✅ 直接替換聯絡詢價
查看資料表 →TPS3700DDCR
✅ 直接替換聯絡詢價
查看資料表 →LM393DT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →LM358DT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →TPS3700DDCR
✅ 直接替換聯絡詢價
查看資料表 →TPS3701DDCT 最大額定值與電氣特性
| Product Type | Dual window voltage detector/comparator |
| Supply Voltage Range | 1.8 V to 36 V |
| Internal Reference | 400 mV |
| Comparator Count | 2 |
| 輸出類型 | Open-drain |
| Output Voltage Rating | 25 V |
| Response Time | 155 µs |
| 靜態電流 | 7 µA typical |
| Monitoring Function | Overvoltage and undervoltage detection |
| Configuration | Window detector or two independent voltage monitors |
| 封裝 | SOT-23-THIN, 6 pins |
| 腳位數 | 6 |
| Application | Overvoltage and undervoltage monitoring |
| 介面類型 | Open-drain output with external pull-up |
| Input Voltage | High-voltage monitoring input |
| Manufacturer | Texas Instruments |
TPS3701DDCT sot-23-thin, 6 pins 腳位配置指南
TPS3701DDCT（sot-23-thin, 6 pins 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： TPS3701DDCT.
請參閱 資料表 以查看完整腳位配置。
典型應用
TPS3701DDCT 適用於 6 應用s: Industrial Power-Supply Protection, Battery-Pack Monitoring, Embedded Sensor Interface, Automotive Electrical-System Monitoring, Power-Distribution Monitoring, Test and Measurement Equipment.
Industrial Power-Supply Protection
TPS3701DDCT fits industrial equipment that must detect both an undervoltage condition and an overvoltage condition on a monitored rail. Its two comparator channels, 400 mV internal reference, and open-drain outputs provide separate fault paths for control-system logic or a safety monitor. The 1.8 V to 36 V supply range is useful for broad industrial rails, while the approximately 155 µs response time should be checked against the protected circuit’s tolerance. External resistors establish the threshold network, so their tolerance and the reference accuracy directly influence the trip points.
推薦
Battery-Pack Monitoring
The TPS3701DDCT can supervise battery-related rails where the system needs to know whether a voltage has moved below or above an acceptable operating window. Its integrated 400 mV reference and two outputs reduce the number of separate comparator channels needed for basic undervoltage and overvoltage indication. The 6-pin SOT-23-THIN package helps conserve board area, while the approximately 7 µA typical quiescent current supports low-power designs. Threshold resistors and pull-up components must be sized for the battery chemistry and required fault-response timing.
推薦
Embedded Sensor Interface
TPS3701DDCT is suitable for monitoring a sensor interface or remote power branch where the controller must detect invalid voltage conditions before processing measurements. Two independent outputs can represent upper and lower fault events, allowing the embedded controller to disable an amplifier, sensor, or communications stage. The high-voltage capability accommodates industrial sensing environments, but input protection, grounding, and filtering must be designed around the actual sensor rails. The approximately 155 µs timing should be compared with the required reaction time, while the open-drain outputs simplify connection to fault-tolerant digital inputs.
推薦
Automotive Electrical-System Monitoring
The TPS3701DDCT can support electrical-system monitoring functions that require separate upper and lower rail fault signals, subject to the device’s verified operating limits and application-specific qualification. Its 36 V maximum supply makes it relevant to systems above conventional low-voltage logic levels, and the two open-drain outputs can drive external fault logic when properly pulled up. Automotive use must not be inferred from the general device description alone; verify transient protection, temperature range, AEC-Q100 status, and system safety requirements against the current manufacturer documentation before qualification.
推薦
Power-Distribution Monitoring
TPS3701DDCT is appropriate for power-distribution modules where several loads require indication that a rail has moved outside a valid window. The two comparator outputs can feed load-disable logic, status LEDs, or a supervisory controller, and the internal reference simplifies the basic threshold architecture. Because the outputs are open-drain, multiple fault signals can share a pull-up domain when the electrical design permits. Use the 1.8 V to 36 V range and 25 V output rating as design constraints, and verify that the external threshold network does not introduce unacceptable tolerance or noise.
推薦
Test and Measurement Equipment
TPS3701DDCT can be used in test and measurement equipment as a compact voltage-window fault detector for input rails, DUT fixtures, or protection interfaces. Its two outputs allow separate indication of upper and lower excursions, while the small SOT-23-THIN package supports dense front-end layouts. The internal 400 mV reference and external resistor network provide a compact thresholding solution, but metrology accuracy depends on resistor tolerance, temperature behavior, and input conditioning. The approximately 155 µs response time is appropriate for many protection and status functions but may require external filtering for very fast fault capture.
推薦
推薦產品摘要
工程參考資料，適用於 TPS3701DDCT — 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 | TPS3701DDCR | TPS3700 | TPS3700 |
|---|---|---|---|---|
| Package | SOT-23-THIN, 6 pins | SOT-23-THIN | SOT-23-THIN | SOT-23-THIN |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
主要差異化特點
- Integrated dual-window monitoring (對比LM393)
- High-voltage operating range (對比LM358)
- Separate open-drain fault outputs (對比TPS3700)
設計說明
Use external pull-up resistors on OUTA and OUTB because both outputs are open-drain. Select the pull-up voltage below the verified 25 V output rating and above the receiving logic’s input threshold. The resistor value should provide adequate rise time for the connected receiver without creating excessive continuous power when a fault output is asserted. Confirm the actual threshold logic and input current from the manufacturer datasheet before finalizing the network.
Keep the monitor-input traces short and route them away from switching nodes and high-current paths. Place the external threshold resistors close to the relevant input pins so parasitic resistance and noise do not shift the intended trip points. The SOT-23-THIN footprint is compact, but adequate clearance around exposed copper, pull-up components, and neighboring connectors is necessary for assembly and inspection.
Do not substitute a generic dual comparator without checking the pin map, internal reference, input voltage range, and fault-output polarity. The supplied data does not establish LM393 or LM358 as verified TPS3701DDCT drop-in replacements, despite their functional similarity. Confirm the complete Texas Instruments pinout and threshold calculation before substitution, and do not rely on the package name alone.
合規資訊
The verified Mouser search result identifies products in the TPS3701 family as RoHS compliant. The supplied data does not establish REACH, AEC-Q100, halogen-free, lead-free, or conflict-minerals status for TPS3701DDCT specifically.
