M
PDA/Hand-Held Computer Power Controller
8
_______________________________________________________________________________________
_________________________________________________Pin Desc ription (c ontinued)
33
34
35
36
TEMP
AUXIN
–———N
GD1
Analog Multiplexer Input and Battery Sense Input
Analog Multiplexer Input
Shutdown-Mode Control Input
High-Side Gate-Driver Output
25
26
27
28
3OUT
CS
SS
BATT
+3.3V Regulator Feedback Connection and Linear-Regulated + 3.3V Output
+3.3V Regulator Current-Sense Input
+3.3V Regulator Soft-Start Capacitor Connection
Battery Voltage Input
29
30
31
32
VCHG
UVLO
REF
AOUT
Charger Voltage Input
Undervoltage Lockout Threshold Input
+2.5V Reference Output
Analog Multiplexer Buffered Output
MAX781
C7
M1
M2
T1
C12
C11
+5V LOW
CURRENT OUTPUT
+14V OUTPUT
+3.3V
OUTPUT
PCMCIA 2.0
CARD SLOT
VPPs
D7
D6
D5
C6
C9
C8
GATE DRIVERS
FOR POWER
SWITCHING
R7
5OUT
VHI
BATT
DHI
BST
LX
DLO
PGND
CS
3OUT
AGND
VPPA
SPI
COMPATIBLE
SERIAL
INTERFACE
VPPB
GD1
UVLO
SS
GD5
AOUT
AUXIN
FAST
INT
DOUT
DIN
SCLK
CE
CSBAT
COMP
TEMP
SYNC
REF
DCHG
R4
R8
D2
BATTERY
CHARGER
SECTION
M3
L1
D3
C14
D1
BATTERY
CHARGER
DC INPUT
R1
C1
C3
C2
C5
C10
T
VCHG
SHDN
Figure 1. Typical Operating Circuit
