FAN5401 Fairchild Semiconductor, FAN5401 Datasheet - Page 3

• Manufacturer Part Number: FAN5401
• Description: The FAN5401 combines a highly integrated switched-mode charger, to minimize single-cell Lithium-ion (Li-ion) charging time from a USB power source, and a boost regulator to power a USB peripheral from the battery
• Manufacturer: Fairchild Semiconductor

Block Diagram
© 2009 Fairchild Semiconductor Corporation
FAN5400 Family • Rev. 1.0.7
PMID
Greater than VBAT
Less than VBAT
VBUS
Q1A
ON
OFF
C
IN1
CHARGE
Q1B
OFF
ON
PUMP
Q3
Figure 2. IC and System Block Diagram
Figure 3. Power Stage
Q1
Q2
Q1B
Q1A
3
PMID
CSIN
SW
PGND
VBAT
SYSTEM
1H
L1
C
LOAD
OUT
C
IN2
C
BAT
+ Battery
68m
R
SENSE
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