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Product Detailed Parameters
- Description：IC COMPARATOR 2 GEN PUR 8TSSOP
- Series：Signature
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR)
- Type：General Purpose
- Number of Elements：2
- Output Type：Open-Collector, Rail-to-Rail
- Voltage - Supply, Single/Dual (±)：2V ~ 36V, ±1V ~ 18V
- Voltage - Input Offset (Max)：7mV @ 5V
- Current - Input Bias (Max)：0.25µA @ 5V
- Current - Output (Typ)：16mA @ 5V
- Current - Quiescent (Max)：2.5mA
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：-
- Hysteresis：-
- Operating Temperature：-40°C ~ 125°C
- Package / Case：8-TSSOP (0.173", 4.40mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：8-TSSOP
- Grade：-
- Qualification：-
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Overview
The LM2903PT is a dual analog comparator manufactured by ROHM Semiconductor, housed in an 8-pin TSSOP surface-mount package. It operates on a single supply voltage ranging from +2V to +36V or dual supplies of ±1V to ±18V. The device features two independent comparator circuits with open-collector outputs capable of sinking up to 16mA. Key electrical characteristics include a typical supply current of 0.4mA, input bias current of 25nA, and small signal response time of 1.3µs. It supports an extended operating temperature range from -40°C to +125°C.
Feature Summary
- Operates with wide single or dual power supply voltages
- Features low supply current consumption
- Supports ground-sense input and output capabilities
- Provides open-collector output configuration
Applications
- Consumer Electronics
- Current Sense Application
- Battery Monitor
- Multivibrator
Procurement Notes
Verify the manufacturer designation as ROHM Semiconductor for this specific part number. Confirm the TSSOP-8 package type matches the design requirements. Ensure the industrial temperature grade (-40°C to +125°C) aligns with the operational environment. Check for RoHS compliance status if required by project specifications.
Selection Notes
Select this component when a dual-channel comparator with low power consumption is needed for single-supply applications. The wide input common-mode voltage range including ground makes it suitable for sensing near the negative rail. Verify that the open-collector output interface is compatible with the downstream logic levels.
Part Context
This device belongs to the LM2903xx series within the ROHM Signature Series comparators. It shares architectural similarities with the LM393, LM339, and LM2901 families but offers an extended temperature range compared to commercial variants. The TSSOP-8 package provides a compact footprint for space-constrained designs.
Replacement Considerations
LM393PT (Commercial Temperature Grade)
FAQ
What is the maximum differential input voltage?
The absolute maximum differential input voltage is rated at +36V.
Does the input common-mode voltage range include ground?
Yes, the input common-mode voltage range extends down to Vcc-, allowing for ground sensing.
