LM2903AVQPWRQ1 - Dual 36 V Automotive Comparator | TI
MPN： LM2903AVQPWRQ1 ✓ 啟用中LM2903AVQPWRQ1 概覽
A comparator is a high-gain analog circuit that determines whether one input voltage is above or below another input voltage. Its output changes state when the differential input crosses the selected threshold. The dual differential comparator category extends this function to two independent channels, making it useful for battery monitoring, sensing, window detection, and control loops. In the hierarchy of semiconductor components, a comparator belongs to the broader analog and interface IC family.
The LM2903AVQPWRQ1 combines a wide operating supply range with low supply-current operation. Manufacturer product information identifies the device as an automotive high-voltage dual comparator qualified for AEC-Q100 Grade 0 and 1. Each channel uses an open-collector output, allowing multiple comparators to share a pull-up network for wired-AND signaling. The typical propagation delay is 1.3 us, while the operating temperature range extends from -40 C to +125 C.
Each comparator channel includes a non-inverting input, an inverting input, and an open-collector output. The eight-pin TSSOP package keeps the two channels separate while supporting compact PCB placement. Because open-collector outputs require an external pull-up resistor, the output voltage is set by the pull-up supply and resistor rather than by a push-pull output stage. The dual architecture also allows one device to monitor two independent threshold conditions.
Typical uses include automotive battery and power-rail monitoring, industrial threshold detection, sensor conditioning, overvoltage and undervoltage protection, and automotive control modules. The 2 V to 36 V operating range is particularly useful when a circuit operates from an automotive battery-derived supply. The 1.3 us response time supports comparisons where the threshold result must be captured quickly, although propagation delay and input overdrive should be checked against the system timing budget.
When designing a PCB for LM2903AVQPWRQ1, place the device near the sensed signals and keep input traces short to reduce noise pickup. Route each open-collector output with an appropriate pull-up resistor, verify absolute-maximum input and supply voltages, and account for input bias current when choosing high-impedance divider networks. The automotive-qualified grade and -40 C to +125 C rating support harsh-temperature systems, provided the surrounding power distribution and protection components are appropriately rated.
This product page consolidates the exact ordering information, package details, technical specifications, drop-in alternatives, and application-specific design guidance for engineers evaluating the LM2903AVQPWRQ1. It also distinguishes true same-package drop-in choices from related comparators that require a different footprint.
直接替換替代品，適用於 LM2903AVQPWRQ1 — 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。
LM2903PWR
✅ 直接替換📋 參考替代品（不在目錄中）
LM2903VQPWRQ1
✅ 直接替換聯絡詢價
查看資料表 →LM2903AVQPWRQ1 最大額定值與電氣特性
| Comparator Type | Dual differential comparator |
| Automotive Qualification | AEC-Q100 Grade 0 and 1 |
| Supply Voltage Range, Single Supply | 2 V to 36 V |
| Supply Voltage Range, Dual Supply | +/-1 V to +/-18 V |
| Maximum Supply Voltage in Comparison Data | 30 V |
| Typical Response Time | 1.3 us |
| Typical Supply Current | 0.8 mA per comparator |
| Typical Supply Current in Comparison Data | 0.4 mA per channel |
| 輸出類型 | Open-collector |
| Input Common-Mode Range | Rail-to-rail |
| Number of Channels | 2 |
| 工作溫度範圍 | -40 C to +125 C |
| 封裝 | TSSOP (PW), 8 pins |
| 安裝類型 | Surface mount |
| Shipping Configuration | Tape and reel |
| MSL | MSL 1, 260 C unlimited floor life |
| RoHS 狀態 | Compliant |
LM2903AVQPWRQ1 腳位配置
| 腳位 1 | OUT1 — Open-collector output of comparator channel 1 |
| 腳位 2 | IN1- — Inverting input of comparator channel 1 |
| 腳位 3 | IN1+ — Non-inverting input of comparator channel 1 |
| 腳位 4 | GND — Ground connection |
| 腳位 5 | IN2+ — Non-inverting input of comparator channel 2 |
| 腳位 6 | IN2- — Inverting input of comparator channel 2 |
| 腳位 7 | OUT2 — Open-collector output of comparator channel 2 |
| 腳位 8 | VCC — Positive power supply connection |
典型應用
LM2903AVQPWRQ1 適用於 6 應用s: Automotive Battery Monitoring, Power-Rail Overvoltage Detection, Automotive Sensor Thresholding, Battery Charger Status Detection, Industrial Control and Safety Logic, Automotive Infotainment Signal Validation.
Automotive Battery Monitoring
The LM2903AVQPWRQ1 fits automotive battery monitoring because its dual architecture can compare divided battery voltage against two independent thresholds while its 2 V to 36 V operating range supports battery-derived rails. AEC-Q100 Grade 0 and 1 qualification and operation from -40 C to +125 C support harsh automotive environments. Each open-collector output can drive a pull-up and diagnostic input. The design must include divider accuracy, input overvoltage protection, and transient filtering.
推薦
Power-Rail Overvoltage Detection
The LM2903AVQPWRQ1 can monitor a 12 V, 24 V, or battery-derived supply by comparing a scaled feedback voltage with a reference. One channel detects an upper threshold while the second detects a lower or complementary condition. Its 1.3 us typical response time provides a defined transition interval, and open-collector outputs permit a shared pull-up for wired-AND fault signaling. Resistor tolerance and input transient protection remain central to threshold accuracy.
推薦
Automotive Sensor Thresholding
The LM2903AVQPWRQ1 is suitable for conditioning resistive, inductive, or externally biased automotive sensors that produce a threshold-related analog voltage. Two independent channels can evaluate different sensor signals, reducing component count in control modules. Rail-to-rail input operation supports comparisons near the supply rails, while the wide 2 V to 36 V supply range accommodates battery transients within the operating limits. Input filtering should reject electromagnetic noise before threshold detection.
推薦
Battery Charger Status Detection
The LM2903AVQPWRQ1 can detect charging-system status by comparing battery, adapter, or regulator voltages that have been scaled to a common range. One comparator channel can distinguish battery-present voltage while the other identifies an overvoltage condition. Open-collector outputs are convenient for wired-AND status lines with a shared pull-up, and the 1.3 us typical response supports prompt control updates. The external pull-up must be designed to limit fault-current and output-low requirements.
推薦
Industrial Control and Safety Logic
The LM2903AVQPWRQ1 can implement high-voltage threshold logic for industrial controllers, machinery, and actuator interfaces where two independent comparisons reduce component count. Its 2 V to 36 V operating range supports 24 V control systems, while AEC-Q100 qualification provides useful automotive-related assurance. The open-collector outputs can operate external relays, optocouplers, or logic pull-ups. Designers should verify every output's sink-current and voltage rating before adding a load.
推薦
Automotive Infotainment Signal Validation
The LM2903AVQPWRQ1 can validate shifted or attenuated signals within an automotive infotainment module. Two channels can check complementary voltage levels, detect an invalid signal range, or supervise a slow communication-linked analog condition. The 1.3 us typical response time is suitable for moderate-rate qualification logic, and open-collector outputs provide a simple way to alert a controller. The circuit should include protection against transient coupling and account for input overdrive when interpreting delay.
推薦
推薦產品摘要
工程參考資料，適用於 LM2903AVQPWRQ1 — 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 | LM2903PWR | LM2903VQPWRQ1 |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | TSSOP-8 (PW) | TSSOP-8 (PW) | TSSOP-8 (PW) |
| Comparator Channels | 2 | 2 | 2 |
| Output Type | Open-collector | Open-collector | Open-collector |
主要差異化特點
- Automotive qualification is explicit for the target ordering option (對比LM2903PWR)
- Wide automotive operating-temperature capability (對比LM2903PWR)
- Two independent threshold channels in one TSSOP device (對比LM2903VQPWRQ1)
設計說明
Treat the open-collector outputs as open-collector outputs rather than push-pull logic outputs. Each channel requires a pull-up resistor before its output can reach a valid high level. Select the resistor using the required sink current, output-low voltage, rise-time budget, and maximum bus capacitance. If several outputs share a pull-up, ensure that one channel sinking the output low does not create an excessive current path or prevent a valid fault signal.
Place the LM2903AVQPWRQ1 close to the divider, reference, or sensed signal that establishes its comparison threshold. Keep input traces short and away from switching nodes and relay-coil wiring. If a sensing line is remote, terminate it close to the source and use filtering at the comparator input. Provide a stable ground-return path so input and output currents do not share a noisy segment of the board.
The 2 V to 36 V operating range is suitable for many automotive and industrial rails, but the application must distinguish operating voltage from absolute-maximum voltage. Check the manufacturer absolute-maximum table for supply voltage, input voltage, output voltage, and power dissipation under fault conditions. Add appropriate surge and reverse-battery protection rather than relying on the comparator's qualified operating range alone.
Do not assume that two comparator channels use identical thresholds. Input offset voltage, input bias current, resistor tolerance, and channel-to-channel variation can shift the actual switching point. For safety-related decisions, calculate threshold tolerance across temperature and supply range, include hysteresis where chatter is possible, and verify the assembled circuit rather than relying only on nominal resistor values.
合規資訊
Texas Instruments identifies the device as AEC-Q100 Grade 0 and 1 qualified. The LM2903AVQPWRQ1 compliance listing states RoHS compliant and MSL 1 at 260 C with unlimited floor life; other regional and material compliance declarations require confirmation for the exact orderable part.
