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LM2903BQDDFRQ1

Name: LM2903BQDDFRQ1
Rating: 4.7 (12 reviews)

AUTOMOTIVE QUALIFIED DUAL DIFFER

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製造商。部分 #LM2903BQDDFRQ1
包 SOT-23-8
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規格

Supplier	Texas Instruments
Package	Tape & Reel (TR),Cut Tape (CT)
Series	Automotive, AEC-Q100
ProductStatus	Active
Type	Differential
NumberofElements	2
OutputType	CMOS, MOS, Open-Collector, TTL
Voltage-SupplySingle/Dual(±)	2V ~ 36V
Voltage-InputOffset(Max)	2.5mV @ 5V
Current-InputBias(Max)	0.025µA @ 5V
Current-Output(Typ)	21mA @ 5V
Current-Quiescent(Max)	600µA
PropagationDelay(Max)	1µs (Typ)
OperatingTemperature	-40°C ~ 125°C (TA)
Package/Case	SOT-23-8
MountingType	Surface Mount

概述

Description

The LM2903BQDDFRQ1 is TI’s dual low-power voltage comparator (LM2903 family) in an 8‑pin package. It compares two input voltages and drives open-collector outputs.
Key points:
- Dual open-collector outputs; requires external pull-up resistors.
- Wide supply: 2 to 36 V (single-supply operation).
- Input common-mode includes ground; typically up to Vcc−1.5 V.
- Input offset voltage typically around 2 mV (max ~7 mV).
- Output can sink roughly up to ~16 mA; cannot source current.
- Package options include common 8‑pin variants (SOIC/DIP); the Q1 suffix denotes a specific packaging/trace option—check the datasheet for exact details.
Applications: zero-cross and level detectors, window detectors, comparator-based switches, battery-powered sensing, and general threshold detection.
Design notes: use a pull-up resistor on each output, beware of noise (add hysteresis if needed), and ensure inputs stay within the common-mode range. For exact figures and packaging, consult the LM2903BQDDFRQ1 datasheet.

Features

Here are the typical features of the LM2903BQDDFRQ1 (dual comparator in an 8-pin package):
- Dual independent voltage comparators in one package
- Open-collector outputs (requires external pull-up resistors; outputs can be wired-AND)
- Input common-mode range includes ground
- Wide supply voltage range: 2 V to 36 V (single-supply operation)
- Low input bias currents and high input impedance
- Output capable of sinking current with low-side pull-up
- Suitable for a broad operating temperature range (industrial-grade variants available)
- Fast response with short propagation delays (depends on Vcc and load)
- Available in multiple small packages (e.g., 8-pin DIP/SOIC) with RoHS-compliant options
Note: Exact numbers (current, delay, temperature range) vary by variant and packaging; consult the datasheet for the specific “BQDDFRQ1” option for exact specifications.

Package

It’s in an 8-pin Small Outline IC (SOIC-8) package, RoHS-compliant (DDFR variant).

Pinout

Pin count: 8 pins.
Function: LM2903BQDDFRQ1 is a dual low-power comparator with open-collector outputs (two independent comparators). Outputs sink current and require pull-up resistors. Input common-mode includes ground; operating supply range is typically 2–36 V.

Manufacturer

Manufacturer: Texas Instruments Incorporated (TI).
Kind of company: A global American multinational semiconductor company that designs, manufactures, and sells integrated circuits, especially analog and mixed-signal devices.

Application

LM2903BQDDFRQ1 is a dual comparator with open-collector outputs. Common applications include:
- Battery/voltage monitoring (undervoltage/overvoltage)
- Power-supply regulation and reference circuits
- Window and level detectors
- Zero-crossing and AC line sensing
- Overcurrent/overload protection
- Motor/fan speed control and protection
- Thermostats and temperature-control interfaces
- Industrial/automotive sensing and threshold detection

Equivalent

Equivalent parts (dual, open-collector comparators; 2–36 V supply):
- LM393 (TI) – essentially the same
- ST TS393
- ON Semiconductor MC3302
- Fairchild KA393
- New Japan Radio NJM2903 (NJR)
Note: pinouts/package vary; verify datasheets for proper footprint and substitute suitability.