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ACT8325 Datasheet(PDF) 6 Page - Active-Semi, Inc

No. de pieza ACT8325
Descripción Electrónicos  Dual PWM Step-Down DC/DCs in TDFN33
PDF  11 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

ACT8325 Datasheet(HTML) 6 Page - Active-Semi, Inc

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ACT8325
Rev 2, 25-May-11
STEP-DOWN DC/DC CONVERTER
Active-Semi
Innovative Power
TM
- 6 -
www.active-semi.com
Copyright © 2011 Active-Semi, Inc.
ActivePMU
TM is a trademark of Active-Semi.
: VNOM1 refers to the nominal output voltage level for VOUT1 as defined by the Ordering Information section.
ELECTRICAL CHARACTERISTICS (REG1)
(VVP1 = 3.6V, TA = 25°C, unless otherwise specified.)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VP1 Operating Voltage Range
3.1
5.5
V
VP1 UVLO Threshold
Input Voltage Rising
2.9
3
3.1
V
VP1 UVLO Hysteresis
Input Voltage Falling
80
mV
Standby Supply Current
130
200
µA
Shutdown Supply Current
ON1 = GA, VVP1 = 4.2V
0.1
1
µA
Adjustable Output Option Regulation
Voltage
0.625
V
Output Voltage Regulation Accuracy
VNOM1 < 1.3V, IOUT1 = 10mA
-2.4%
VNOM1
+1.8%
V
VNOM1 ≥ 1.3V, IOUT1 = 10mA
-1.2%
VNOM1
+1.8%
Line Regulation
VVP1 = Max(VNOM1 + 1V, 3.2V) to 5.5V
0.15
%/V
Load Regulation
IOUT1 = 10mA to 350mA
0.0017
%/mA
Switch Peak Current Limit
ACT8325NDAAA
0.45
0.6
A
ACT8325NDEH
0.65
0.85
Oscillator Frequency
VOUT1 ≥ 20% of VNOM1
1.35
1.6
1.85
MHz
VOUT1 = 0V
530
kHz
PMOS On-Resistance
ACT8325NDAAA, ISW1 = -100mA
0.52
0.88
ACT8325NDEH, ISW1 = -100mA
0.4
0.68
NMOS On-Resistance
ISW1 = 100mA
0.27
0.46
Ω
SW1 Leakage Current
VVP1 = 5.5V, VSW1 = 5.5V or 0V
1
µA
Power Good Threshold
94
%VNOM1
Minimum On-Time
70
ns
Logic High Input Voltage
ON1
1.4
V
Logic Low Input Voltage
ON1
0.4
V
Thermal Shutdown Temperature
Temperature Rising
160
°C
Thermal Shutdown Hysteresis
Temperature Falling
20
°C
Ω



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