MB3813 データシートの表示（PDF） - Fujitsu

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MB3813

Lithium Ion Battery Charger DC/DC Converter IC (High Precision with Constant-current Function)

Fujitsu 

MB3813A/MB3833A/MB3843

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s PIN DESCRIPTION

Pin no.

1

2

3

4

5

6

7

Symbol

Vin1

IN1

IN2

-IN2

-IN1

FB

CTL

8

Vin2

9

VREF

10

SEL

11

CS

12

RT

13

CT

14

VCC

15

OUT

16

GND

I/O

Descriptions

I Input voltage detector block (VLDET) input pin

I Current detector amplifier (Current Amp.) input pin

I Output voltage feedback input pin

I Error amplifier (Error Amp.2) inverted input pin

I Error amplifier (Error Amp.1) inverted input pin

O Error amplifier (Error Amp.1, 2 common) output pin

I Power supply control pin

An “L” level signal input to the CTL pin sets the IC in standby mode.

I DC/DC converter charging current setting input pin

O Reference voltage output pin

I Output voltage switching pin

“L” level output voltage: MB3813A 12.6 V

MB3833A 8.4 V

MB3843 4.2 V

“H” level output voltage: MB3813A 12.3 V

MB3833A 8.2 V

MB3843 4.1 V

— Soft start capacitor connection pin

— Triangular wave frequency setting resistor connection pin

— Triangular wave frequency setting capacitor connection pin

— Power supply pin

O Totem-pole output pin

— Ground pin

4

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