FUJITSU SEMICONDUCTOR
DATA SHEET
DS04-27700-3E
ASSP For Power Management Applications (Secondary battery)
Lithium Ion Battery Charger DC/DC Converter IC
(High Precision with Constant-current Function)
MB3813A/MB3833A/MB3843
s
DESCRIPTION
The FUJITSU MB3813A/33A/43 are pulse width modulation (PWM) DC/DC converter ICs with independent output
voltage and current setting capability.
The use of on-chip output setting resistance enables high precision output voltage control. Also, an output voltage
switching feature for use with either graphite-electrode or coke-electrode lithium-ion batteries makes this IC ideal
for internal battery chargers in notebook personal computers and similar applications.
Cell count
3-cell
2-cell
1-cell
8.4 V/8.2 V
4.2 V/4.1 V
Output voltage
12.6 V/12.3 V
MB3813A
MB3833A
MB3843
Part number
s
FEATURES
•
•
•
•
•
Output setting resistance is on-chip for high precision output voltage:
±1.0%
SEL pin enables output voltage selection
High precision reference voltage source: 2.5 V
±
1.0%
High frequency operating capability: max. 500 kHz
On-chip current detector amplifier with wide in-phase input voltage range: 0 V to V
CC
(Continued)
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PACKAGE
16-pin plastic SSOP
(FPT-16P-M05)
FUJITSU [ FUJITSU COMPONENT LIMITED. ]
