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TPS650244RHBR Datasheet(PDF) 6 Page - Texas Instruments

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No. de pieza TPS650244RHBR
Descripción Electrónicos  Power Management ICs for Li-Ion Powered Systems
Download  33 Pages
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Fabricante Electrónico  TI [Texas Instruments]
Página de inicio  http://www.ti.com
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TPS650244RHBR Datasheet(HTML) 6 Page - Texas Instruments

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ELECTRICAL CHARACTERISTICS
TPS650240
,, TPS650241
TPS650242, TPS650243
TPS650244, TPS650245
SLVS774A – JUNE 2007 – REVISED DECEMBER 2007
VINDCDC1 = VINDCDC2 = VINDCDC3 = VCC = VINLDO = 3.6V, TA = –40°C to 85°C, typical values are at TA = 25°C
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VDCDC2 STEP-DOWN CONVERTER
VVINDCDC2
Input voltage range
2.5
6.0
V
IO
Maximum output current for
VO = 2.5V
800
mA
TPS650240, TPS650242 and
TPS650245
IO
Maximum output current for TPS650241
VO = 2.5V
1000
mA
and TPS650243
IO
Maximum output current for TPS650244
VO = 2.5V
1600
mA
ISD
Shutdown supply current in VINDCDC2
EN_DCDC2 = GND
0.1
1
µA
RDS(ON)
P-channel MOSFET on-resistance
VINDCDC2 = VGS = 3.6V
140
300
m
ILP
P-channel leakage current
VINDCDC2 = 6.0V
2
µA
RDS(ON)
N-channel MOSFET on-resistance
VINDCDC2 = VGS = 3.6V
150
297
m
ILN
N-channel leakage current
VDS = 6.0V
7
10
µA
ILIMF
Forward current limit (P- and N-channel)
2.5V < VINDCDC2 < 6.0V
1.05
1.16
1.29
A
for TPS650240, TPS650242 and
TPS650245
ILIMF
Forward current limit (P- and N-channel)
2.5V < VINDCDC2 < 6.0V
1.22
1.35
1.50
A
for TPS650241 and TPS650243
ILIMF
Forward current limit (P- and N-channel)
2.5V < VINDCDC2 < 6.0V
1.75
1.97
2.15
A
for TPS650244
fS
Oscillator frequency
1.95
2.25
2.55
MHz
VDCDC2
Fixed output voltage
1.8V
VINDCDC2 = 2.5V to 6.0V; 0 mA
≤ IO
–2%
2%
MODE = 0 (PWM/PFM)
1.6A
2.5V
VINDCDC2 = 3.0V to 6.0V; 0 mA
≤ IO
–2%
2%
1.6A
Fixed output voltage
1.8V
VINDCDC2 = 2.5V to 6.0V; 0 mA
≤ IO
–2%
2%
MODE = 1 (PWM)
1.6A
2.5V
VINDCDC2 = 3.0V to 6.0V; 0 mA
≤ IO
–1%
1%
1.6A
Adjustable output voltage with resistor
VINDCDC2 = VDCDC2 + 0.5V (min 2.5V)
–2%
2%
divider at DEFDCDC2 MODE = 0
to 6.0V; 0mA
≤ IO ≤ 1.6A
(PWM)
Adjustable output voltage with resistor
VINDCDC2 = VDCDC2 + 0.5V (min 2.5V)
–1%
1%
divider at DEFDCDC2; MODE = 1
to 6.0V; 0mA
≤ IO ≤ 1.6A
(PWM)
Line regulation
VINDCDC2 = VDCDC2 + 0.3 V (min. 2.5
0.0
%/V
V) to 6.0V; IO = 10mA
Load regulation
IO = 10mA to 1.6A
0.25
%/A
TSS
Soft start ramp time
VDCDC2 ramping from 5% to 95% of
750
µs
target value
R(L2)
Internal resistance from L2 to GND
1
M
6
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Copyright © 2007, Texas Instruments Incorporated
Product Folder Link(s): TPS650240 TPS650241 TPS650242 TPS650243 TPS650244 TPS650245


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