Datasheet

FUNCTIONAL BLOCK DIAGRAM
EN_DCDC1
ENABLE
VCC
VLDO 1
200 mA LDO
VLDO1
VLDO2
VINDCDC 1
VLDO 2
200 mA LDO
VIN_LDO
ENABLE
VIN
MODE
2.2 mF
2.2 mF
1mF
1R
10mF
TPS650240
EN_LDO
Vbat
PWRFAIL
AGND1
I/Ovoltage
R19
L1
DEFDCDC1
VDCDC1
PGND1
DCDC1 (I/O)
STEP-DOWN
CONVERTER
1000 mA
2.2 mH
22 mF
R1
R2
EN_DCDC2
VINDCDC 2
10mF
L2
DEFDCDC2
VDCDC2
PGND2
DCDC2
(memory)
STEP-DOWN
CONVERTER
800 mA
2.2 mH
22 mF
R3
R4
EN_DCDC3
VINDCDC 3
10mF
L3
DEFDCDC3
VDCDC 3
PGND3
DCDC3 (core)
STEP-DOWN
CONVERTER
800 mA
2.2uH
22 mF
R5
R6
Vbat
Vbat
Vbat
Vdd_alive
VLDO 3
30 mA LDO
2.2 mF
1.2 V
3.3Vor 2.8V
2.5Vor 1.8V
1.0Vor 1.3V
VCC
PWRFAIL _SNS
Vbat
Vref=1V
+
-
R9
R10
AGND2
PWM / PFM
EN_Vdd_aliv
e
ENABLE
1.0V / 1.3V
R7
R8
ENABLE
ENABLE
TPS650240 , , TPS650241
TPS650242 , TPS650243
TPS650244 , TPS650245
www.ti.com .............................................................................................................................................................. SLVS774B – JUNE 2007 – REVISED JULY 2009
Copyright © 2007 – 2009, Texas Instruments Incorporated Submit Documentation Feedback 11
Product Folder Link(s): TPS650240 TPS650241 TPS650242 TPS650243 TPS650244 TPS650245