Datasheet

FUNCTIONAL BLOCK DIAGRAM
EN_DCDC1
ENABLE
VCC
VLDO1
200 mA LDO
VLDO1
VLDO2
VINDCDC1
VLDO2
200 mA LDO
VIN_LDO
ENABLE
VIN
MODE
1 mF
1R
10 mF
TPS650250
EN_LDO
Vbat
PWRFAIL
AGND1
I/Ovoltage
R19
L1
DEFDCDC1
VDCDC1
PGND1
DCDC1 (I/O)
STEP-DOWN
CONVERTER
1600 mA
R1
R2
EN_DCDC2
VINDCDC2
L2
DEFDCDC2
VDCDC2
PGND2
DCDC2
(memory)
STEP-DOWN
CONVERTER
800 mA
R3
R4
EN_DCDC3
VINDCDC3
L3
DEFDCDC3
VDCDC3
PGND3
DCDC3 (core)
STEP-DOWN
CONVERTER
800 mA
R7
R8
Vbat
Vbat
Vbat
Vdd_alive
VLDO3
30 mA LDO
2.2 mF
1 V
3.3 V / 2.8 V
oradjustable
2.5 V / 1.8 V
oradjustable
VCC
PWRFAIL_SNS
Vbat
Vref=1V
+
-
R11
R12
AGND2
PWM/ PFM
EN_Vdd_alive
ENABLE
R9
R10
R5
R6
10 mF
ENABLE
10 mF
ENABLE
2.2 mF
2.2 mF
22 mF
2.2 mH
22 mF
2.2 mH
22 mF
2.2 mH
FB_LDO1
FB_LDO2
TPS650250
www.ti.com ........................................................................................................................................................................................... SLVS843 – DECEMBER 2008
Copyright © 2008, Texas Instruments Incorporated Submit Documentation Feedback 11
Product Folder Link(s): TPS650250