M62258FP Просмотр технического описания (PDF) - Renesas Electronics

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M62258FP

General Purpose Battery Charger Control IC

Renesas Electronics 

M62258FP

Function Block Description

(1) A/D converter input

Voltage regulator

reference voltage

4.8 V

0.8 V

REF

+3

1

*

−

Note: Connect few 1000 pF capacitor

to stabilize the reference voltage

Select the desire reference voltage to be detected by serial data from the microcomputer.

The input voltage level of IN1 and IN2 will be magnified 4 times using selected reference voltage as a center.

This magnified data will be return to the A/D input port of the microcomputer.

As result, accuracy of the A/D converter of the microcomputer will be increased by 2-bit.

(2) +5 V voltage regulator

IDD

Q1

+5 V

VCC

VB

VDD

Since it capable of driving external PNP Tr. base up to 20 mA, it can supply current of

IDD MAX = 20 mA × Q1hFE

Also, since this is low I/O type power source, it can be operate

VCC – VDD = 0.1 V

REJ03F0247-0200 Rev.2.00 Jun 16, 2008

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