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ACT8712 датащи(PDF) 20 Page - Active-Semi, Inc

номер детали ACT8712
подробное описание детали  Four Channel Integrated Power Management IC for Handheld Portable Equipment
PDF  36 Pages
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производитель  ACTIVE-SEMI [Active-Semi, Inc]
домашняя страница  http://www.active-semi.com
Logo ACTIVE-SEMI - Active-Semi, Inc

ACT8712 датащи(HTML) 20 Page - Active-Semi, Inc

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STEP-DOWN DC/DC CONVERTERS
Rev0, 25-Feb-08
ACT8712
Innovative Products. Active Solutions.
- 20 -
www.active-semi.com
Copyright © 2008 Active-Semi, Inc.
ActivePMU
TM is a trademark of Active-Semi.
I
2CTM is a trademark of Philips Electronics.
VP2 Voltage (V)
5.5
0
REG2 MOSFET Resistance
450
350
250
150
500
400
300
200
100
50
5.0
4.5
4.0
3.5
3
REG1 MOSFET Resistance
VP1 Voltage (V)
600
0
5.5
5.0
4.5
4.0
3.5
3.0
500
550
400
450
300
350
200
250
100
150
50
PMOS
NMOS
PMOS
NMOS
TYPICAL PERFORMANCE CHARACTERISTICS
(ACT8712QLEHA, VVP1 = VVP2 = 3.6V, L = 3.3µH, CVP1 = CVP2 = 2.2µF, COUT1 = COUT2 = 10µF, TA = 25°C, unless otherwise specified.)
REG1 Efficiency vs. Load Current
95
50
1000
Output Current (mA)
90
80
70
60
1
10
100
VOUT1 = 1.8V
3.6V
4.2V
85
75
65
55
REG2 Efficiency vs. Load Current
100
50
1000
Output Current (mA)
90
80
70
60
1
10
100
OUT1 Regulation Voltage
0.666
Temperature (°C)
-20
-40
0
20
40
60
0.444
0.222
0.0
-0.222
-0.444
IOUT1 = 35mA
85
OUT2 Regulation Voltage
0.545
Temperature (°C)
-20
-40
0
20
40
60
0.363
0.181
0.0
-0.181
-0.363
85
IOUT2 = 35mA
-0.666
-0.545
3.6V
4.2V
VOUT2 = 3.0V



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