Datasheet

RECOMMENDED OPERATING CONDITIONS
TPS650240 , , TPS650241
TPS650242 , TPS650243
TPS650244 , TPS650245
www.ti.com .............................................................................................................................................................. SLVS774B – JUNE 2007 – REVISED JULY 2009
MIN NOM MAX UNIT
V
INDCDC1
, 2.5 6.0 V
V
INDCDC2
, Input voltage range step-down converters
V
INDCDC3
, V
CC
V
DCDC1
Output voltage range for VDCDC1 step-down converter
(1)
0.6 V
INDCDC1
V
V
DCDC2
Output voltage range for mem step-down converter
(1)
0.6 V
INDCDC2
V
V
DCDC3
Output voltage range for core step-down converter 0.9 1.5 V
V
INLDO1
, V
INLDO2
Input voltage range for LDOs 1.5 6.5 V
V
LDO1-2
Output voltage range for LDOs 1.0 3.3 V
I
OUTDCDC1
Output current at L1 1600 mA
L1 Inductor at L1
(2)
1.5 2.2 µ H
C
INDCDC1
Input capacitor at V
INDCDC1
(2)
10 µ F
C
OUTDCDC1
Output capacitor at V
DCDC1
(2)
10 22 µ F
I
OUTDCDC2
Output current at L2 1600 mA
L2 Inductor at L2
(2)
1.5 2.2 µ H
C
INDCDC2
Input capacitor at V
INDCDC2
(2)
10 µ F
C
OUTDCDC2
Output capacitor at V
DCDC2
(2)
10 22 µ F
I
OUTDCDC3
Output current at L3 800 mA
L3 Inductor at L3
(2)
1.5 2.2 µ H
C
INDCDC3
Input capacitor at V
INDCDC3
(2)
10 µ F
C
OUTDCDC3
Output capacitor at V
DCDC3
(2)
10 22 µ F
C
VCC
Input capacitor at VCC
(2)
1 µ F
C
in1-2
Input capacitor at VINLDO
(2)
1 µ F
C
OUT1-2
Output capacitor at VLDO1, VLDO2
(2)
2.2 µ F
I
LDO1,2
Output current at VLDO1, VLDO2 200 mA
C
VRTC
Output capacitor at Vdd_alive
(2)
2.2 µ F
I
Vdd_alive
Output current at Vdd_alive 30 mA
T
A
Operating ambient temperature – 40 85 ° C
T
J
Operating junction temperature – 40 125 ° C
R
CC
Resistor from VINDCDC3,VINDCDC2, VINDCDC1 to Vcc used for filtering
(3)
1 10 Ω
(1) When using an external resistor divider at DEFDCDC2, DEFDCDC1.
(2) See applications section for more information, for Vout > 2.85V choose 3.3 µ H inductor.
(3) Up to 2.5mA can flow into Vcc when all 3 converters are running in PWM, this resistor will cause the UVLO threshold to be shifted
accordingly.
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