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ACT8740 Datasheet(PDF) 17 Page - Active-Semi, Inc

No. de pieza ACT8740
Descripción Electrónicos  Six Channel Integrated Power Management IC for Handheld Portable Equipment
PDF  40 Pages
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Fabricante Electrónico  ACTIVE-SEMI [Active-Semi, Inc]
Página de inicio  http://www.active-semi.com
Logo ACTIVE-SEMI - Active-Semi, Inc

ACT8740 Datasheet(HTML) 17 Page - Active-Semi, Inc

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STEP-DOWN DC/DC CONVERTER
ACT8740
Rev PrB, 25-Feb-08
Innovative Products. Active Solutions.
- 17 -
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.
REG1 Efficiency vs. Load Current
100
0.1
1000
Output Current (mA)
90
80
70
60
1
10
100
REG1 Transient Peak Inductor Current
650
VP1 Voltage (V)
5.5
3.5
4.0
4.5
5.0
630
610
590
570
3.0
550
VOUT1 = 1.8V
3.6V
4.2V
3.2V
TYPICAL PERFORMANCE CHARACTERISTICS
(ACT8740QLEGA, VVP1 = VVP2 = 3.6V, L = 3.3µH, CVP1 = CVP2 = 2.2µF, COUT1 = COUT2 = 10µF, TA = 25°C, unless otherwise specified.)
REG1 MOSFET Resistance
VP1 Voltage (V)
600
0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
500
400
300
200
100
REG1 Load Regulation
0.2
0
400
Output Current (mA)
50
100
150
200
250
300
350
0.0
-0.2
-0.4
-0.6
-0.8
OUT1 Regulation Voltage
1.812
1.788
Temperature (°C)
-20
-40
0
20
40
60
1.808
1.804
1.800
1.796
1.792
IOUT1 = 35mA
85
PMOS
NMOS
3.6V
4.2V
-1.0
50



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