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M51953B

Renesas
Part Number M51953B
Manufacturer Renesas
Description Voltage Detecting / System Resetting
Published Jan 10, 2024
Detailed Description M51953A,B/M51954A,B Voltage Detecting, System Resetting IC Series REJ03D0776-0300 Rev.3.00 Sep 18, 2007 Description M519...
Datasheet PDF File M51953B PDF File

M51953B
M51953B

Overview
M51953A,B/M51954A,B Voltage Detecting, System Resetting IC Series REJ03D0776-0300 Rev.
3.
00 Sep 18, 2007 Description M51953A,B/M51954A,B are semiconductor integrated circuits designed for detecting supply voltage and resetting all types of logic circuits such as CPUs.
They include a built-in delay circuit to provide the desired retardation time simply by adding an external capacitor.
They fined extensive applications, including battery checking circuit, level detecting circuit and waveform shaping circuit.
Features • Few external parts • Large delay time with a capacitor of small capacitance (td ≈ 100 ms, at 0.
33 µF) (M51953, M51954) • Low threshold operating voltage (Supply voltage to keep low-state at low supply voltage): 0.
6 V (Typ) at RL = 22 kΩ • Wide supply voltage range: 2 V to 17 V • Wide application range Application • Reset circuit of Pch, Nch, CMOS, microcomputer, CPU and MCU, Reset of logic circuit, Battery check circuit, switching circuit back-up voltage, level detecting circuit, waveform shaping circuit, delay waveform generating circuit, DC/DC converter, over voltage protection circuit Recommended Operating Condition • Supply voltage range: 2 V to 17 V Pin Arrangement M51953AL/BL M51954AL/BL M51953AFP/BFP M51954AFP/BFP 5 Output 4 Delay capacitor 3 GND 2 NC 1 Power-supply (Top view) Outline: 5P5T NC 1 8 NC NC 2 7 Power-supply NC 3 6 Output GND 4 5 Delay capacitor (Top view) NC: No Connection Outline: PRSP0008DE-C (recommend) PRSP0008DA-A (8P2S-A) (not recommend for new design) REJ03D0776-0300 Rev.
3.
00 Sep 18, 2007 Page 1 of 10 M51953A,B/M51954A,B Block Diagram M51953A, B Powersupply A: Built-in Load B: Open Collector M51954A, B Powersupply A: Built-in Load B: Open Collector 5µA R1 Typ – R2 + 1.
25V 25µA Typ – R1 Output R2 5µA Typ – + 1.
25V 25µA Typ + Output Output state Supply voltage Output state Supply voltage GND Delay capacitor Operating Waveform M51953A, B 4.
25V 0.
65V H L Output undefined t td td td ≈ 0.
34...


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