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TPS650242RHB Datasheet(PDF) 6 Page - Texas Instruments

Part # TPS650242RHB
Description  Power Management ICs for Li-Ion Powered Systems
Download  34 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS650242RHB Datasheet(HTML) 6 Page - Texas Instruments

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ELECTRICAL CHARACTERISTICS
TPS650240
TPS650241
TPS650242
SLVS774 – JUNE 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 TPS650240
Vo = 2.5 V
800
mA
and TPS650242
IO
Maximum output current for TPS650241
Vo = 2.5 V
1000
mA
ISD
Shutdown supply current in VINDCDC2
EN_DCDC2 = GND
0.1
1
μA
RDS(ON)
P-channel MOSFET on-resistance
VINDCDC2 = VGS = 3.6 V
140
300
m
ILP
P-channel leakage current
VINDCDC2 = 6.0 V
2
μA
RDS(ON)
N-channel MOSFET on-resistance
VINDCDC2 = VGS = 3.6 V
150
297
m
ILN
N-channel leakage current
VDS = 6.0 V
7
10
μA
ILIMF
Forward current limit (P- and N-channel) 2.5 V < VINDCDC2 < 6.0 V
1.05
1.16
1.29
A
for TPS650240 and TPS650242
ILIMF
Forward current limit (P- and N-channel) 2.5 V < VINDCDC2 < 6.0 V
1.22
1.35
1.5
A
for TPS650241
fS
Oscillator frequency
1.95
2.25
2.55
MHz
VDCDC2
Fixed output voltage
1.8 V
VINDCDC2 = 2.5 V to 6.0 V; 0 mA
≤ I
O
–2%
2%
MODE=0 (PWM/PFM)
1.0 A
2.5 V
VINDCDC2 = 3.0 V to 6.0 V; 0 mA
≤ I
O
–2%
2%
1.0 A
Fixed output voltage
1.8 V
VINDCDC2 = 2.5 V to 6.0 V; 0 mA
≤ I
O
–2%
2%
MODE=1 (PWM)
1.0 A
2.5 V
VINDCDC2 = 3.0 V to 6.0 V; 0 mA
≤ I
O
–1%
1%
1.0 A
Adjustable output voltage with resistor
VINDCDC2 = VDCDC2 + 0.3V (min 2.5V)
–2%
2%
divider at DEFDCDC2 MODE=0 (PWM)
to 6.0V; 0 mA
≤ I
O ≤ 1.0 A
Adjustable output voltage with resistor
VINDCDC2 = VDCDC2 + 0.3V (min 2.5V)
–1%
1%
divider at DEFDCDC2; MODE=1 (PWM) to 6.0V; 0 mA
≤ I
O ≤ 1.0 A
Line Regulation
VINDCDC2 = VDCDC2 + 0.3 V (min. 2.5
0.0
%/V
V) to
6.0 V; IO = 10 mA
Load Regulation
IO = 10 mA to 1.0 A
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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