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TPS650244 Datasheet(PDF) 7 Page - Texas Instruments

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Part # TPS650244
Description  POWER MANAGEMENT ICs FOR Li-ION POWERED SYSTEMS
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS650244 Datasheet(HTML) 7 Page - Texas Instruments

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TPS650241-Q1, TPS650243-Q1, TPS650244-Q1
www.ti.com
SLVS994A
– SEPTEMBER 2009 – REVISED MARCH 2011
ELECTRICAL CHARACTERISTICS
VINDCDC1 = VINDCDC2 = VINDCDC3 = VCC = VINLDO = 3.6 V, TJ = –40°C to 125°C, typical values are at TA = 25°C
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VDCDC3 STEP-DOWN CONVERTER
VVINDCDC3
Input voltage range
2.5
6.0
V
IO
Maximum output current
VO = 1.6 V
800
mA
ISD
Shutdown supply current in
EN_DCDC3 = GND
0.1
1
μA
VINDCDC3
RDS(ON)
P-channel MOSFET on-resistance
VINDCDC3 = VGS = 3.6 V
310
698
m
ILP
P-channel leakage current
VINDCDC3 = 6.0V
0.1
2
μA
RDS(ON)
N-channel MOSFET on-resistance
VINDCDC3 = VGS = 3.6 V
220
503
m
ILN
N-channel leakage current
VDS = 6.0 V
7
10
μA
ILIMF
Forward current limit (P- and
2.5 V
< VINDCDC3 < 6.0 V
1.00
1.20
1.40
A
N-channel)
fS
Oscillator frequency
1.95
2.25
2.55
MHz
VDCDC3
Fixed output voltage
VO = 0.9V to
VINDCDC3 = 2.5 V to 6.0 V;
–2%
2%
MODE = 0
1.6V
0 mA
≤ IO ≤ 800 mA
(PWM/PFM)
Fixed output voltage
–1%
1%
MODE = 1 (PWM)
Line regulation
VINDCDC3 = VDCDC3 + 0.3 V (min. 2.5 V) to
0.0
%/V
6.0 V; IO = 10 mA
Load regulation
IO = 10 mA to 600 mA
0.25
%/A
tSS
Soft start ramp time
VDCDC3 ramping from 5% to 95% of target
750
μs
value
R(L3)
Internal resistance from L3 to GND
1
M
Copyright
© 2009–2011, Texas Instruments Incorporated
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Product Folder Link(s): TPS650241-Q1 TPS650243-Q1 TPS650244-Q1


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