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TYPICAL APPLICATIONS
PROTECTION AND DIAGNOSIS FEATURES
TYPICAL APPLICATIONS
V BAT
+12V Nom.
+
To Other
Two Phases
VPUMP
PGND
PUMP
MAIN
CHARGE
PUMP
OSCILLATOR
5V
REG.
VDD
VPWR
VLS
REG.
TRICKLE
CHARGE
PUMP
VBAT
HOLD
-OFF
CIRCUIT
VLS
VDD
UV
DETECT
RST
INT
3X
T-LIM
PX_BOOT
C x_Boot
EN1
VBAT
HIGH-
PX_HS_G
R g_HS
DESAT. 1.4V
EN2
PX_HS
PX_LS
CS
3
3
CONTROL
LOGIC
COMP
+
-
+
-
SIDE
DRIVER
PX_HS_S
(Optional)
Phase x
Output
To Motor
SI
+
SCLK
SO
PHASEX
OC_OUT
+
-
3
+
-
-
PHASE
COMP.
VBAT
LOW-
SIDE
DRIVER
PX_LS_G
PGNDX
R g_LS
(Optional)
Phase Return
GND(2)
OVER-CUR.
COMP.
I-SENSE
AMP.
VSS
OC_TH
AMP_OUT
AMP_N
AMP_P
VLS_CAP
R Sense
To ADC
Figure 17. Typical Application Diagram Using Charge Pump (+12V Battery System)
33927
Analog Integrated Circuit Device Data
Freescale Semiconductor
37
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