FAN5400_11 Datasheet, PDF (3/37 Pages) Fairchild Semiconductor – FAN5400 / FAN5401 / FAN5402 / FAN5403 / FAN5404 / FAN5405 USB-Compliant Single-Cell Li-Ion Switching Charger

Block Diagram
Figure 2. IC and System Block Diagram
VBUS
C_IN1
Q3
CHARGE
PUMP
PMID
Greater than VBAT
Less than VBAT
Q1A
ON
OFF
Q1B
OFF
ON
PMID
C_IN2
Q1
Q2
Q1A
Q1B
CSIN
SW ^L1
1H
C_OUT
PGND
VBAT
SYSTEM
LOAD
R_SENSE
68m
+ Battery
C_BAT
Figure 3. Power Stage
© 2009 Fairchild Semiconductor Corporation
FAN5400 Family • Rev. 1.0.7
3
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