MB3813A Datasheet, PDF (4/22 Pages) Fujitsu Component Limited. – Lithium Ion Battery Charger DC/DC Converter IC (High Precision with Constant-current Function)

MB3813A/MB3833A/MB3843
s PIN DESCRIPTION
Pin no.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Symbol
Vin1
IN1
IN2
-IN2
-IN1
FB
CTL
Vin2
VREF
SEL
CS
RT
CT
VCC
OUT
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