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TPS65022 Datasheet(PDF) 6 Page - Texas Instruments

Part No. TPS65022
Description  POWER MANAGEMENT IC FOR LI-ION POWERED SYSTEMS
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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www.ti.com
ELECTRICAL CHARACTERISTICS
SLVS667 – JULY 2006
VINDCDC1 = VINDCDC2 = VINDCDC3 = VCC = VINLDO = 3.6 V, VBACKUP = 3 V, T
A = –40°C to 85°C, typical values are
at T
A = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VDCDC1 STEP-DOWN CONVERTER
VI
Input voltage range, VINDCDC1
2.5
6
V
IO
Maximum output current
1200
mA
I(SD)
Shutdown supply current in VINDCDC1
DCDC1_EN = GND
0.1
1
µA
rDS(on)
P-channel MOSFET on-resistance
VINDCDC1 = V(GS) = 3.6 V
125
261
m
Ilkg
P-channel leakage current
VINDCDC1 = 6 V
2
µA
rDS(on)
N-channel MOSFET on-resistance
VINDCDC1 = V(GS) = 3.6 V
130
260
m
Ilkg
N-channel leakage current
V(DS) = 6 V
7
10
µA
Forward current limit (P- and N-channel)
2.5 V < VI(MAIN) < 6 V
1.55
1.75
1.95
A
fS
Oscillator frequency
1.3
1.5
1.7
MHz
VINDCDC1 = 3.3 V to 6 V;
3 V
–2%
2%
0 mA
≤ I
O ≤ 1.2 A
Fixed output voltage
FPWMDCDC1=0
VINDCDC1 = 3.6 V to 6 V;
3.3 V
–2%
2%
0 mA
≤ I
O ≤ 1.2 A
VINDCDC1 = 3.3 V to 6 V;
3 V
–1%
1%
0 mA
≤ I
O ≤ 1.2 A
Fixed output voltage
FPWMDCDC1=1
VINDCDC1 = 3.6 V to 6 V;
3.3 V
–1%
1%
0 mA
≤ I
O ≤ 1.2 A
Adjustable output voltage with resistor
VINDCDC1 = VDCDC1 + 0.3 V (min 2.5 V)
–2%
2%
divider at DEFDCDC1; FPWMDCDC1=0
to 6 V; 0 mA
≤ I
O ≤ 1.2 A
Adjustable output voltage with resistor
VINDCDC1 = VDCDC1 + 0.3 V (min 2.5 V)
–1%
1%
divider at DEFDCDC1; FPWMDCDC1=1
to 6 V; 0 mA
≤ I
O ≤ 1.2 A
VINDCDC1 = VDCDC1 + 0.3 V (min. 2.5 V)
Line Regulation
0
%/V
to 6 V; IO = 10 mA
Load Regulation
IO = 10 mA to 1200 mA
0.25
%/A
VDCDC1 ramping from 5% to 95% of target
Soft start ramp time
750
µs
value
Internal resistance from L1 to GND
1
M
VDCDC1 discharge resistance
DCDC1 discharge = 1
300
6



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