LP28400 Datasheet, PDF (5/17 Pages) Lowpower Semiconductor inc – Programmable Charge Current Up to 3000mA

Preliminary Datasheet
LP28400
Typical Application Circuit
VIN
22uF
10R
LP9006
LP9006
10uF
1uF
4K
4K
1uF
10K
10K 330
10K
10K
ACDRV
AVCC
VREF
CELL
STAT
TS
ISET
20mR
22uF
0.1uF
0R
1K
SYS
22uF
LP28400
SW
0.1uF
BS
2.2uH
SS34
NC /0.1uF
SRP
SRN
REGN
1uF
20mR
22uF
NC /0.1uH
2cell
BATTERY
Figure3. LP28400 application 2CELL circuit
VIN
22uF
10R
1uF
LP9006
LP9006
10uF
4K
4K
330
1uF
10K
10K 10K
LP9006
10K
10K
ACDRV
AVCC
VREF
CELL
STAT
TS
ISET
20mR
22uF
0.1uF
0R
1K
SYS
22uF
LP28400
SW
0.1uF
BS
2.2uH
SS34
NC / 0.1uF
SRP
SRN
REGN
1uF
20mR
22uF
NC /0.1uH
1 cell
BATTERY
Figure4. LP28400 application 2LED circuit
VIN
22uF
LP9006
10R
1uF
LP9006
10uF
4K
4K
1uF
10K
10K 330
10K
10K
ACDRV
AVCC
VREF
CELL
STAT
TS
ISET
20mR
22uF
0.1uF
0R
1K
LP28400
SW
0.1uF
BS
2.2uH
SS34
NC / 0.1uF
SRP
SRN
REGN
1uF
22uF
SYS
LP9007
100mR
NC /0.1uH
100K
100mR LP9014
LP9007
Larger Current Charge Select
10K
100K
22uF
1 cell1
BATTERY
Figure5. LP28400 application of charger circuit and USB Power
LP28400-00 Version 1.0 May.-2013 Email: [e-mail] www.lowpowersemi.com
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