ACT8712
Rev0, 25-Feb-08
STEP-DOWN DC/DC CONVERTERS
ELECTRICAL CHARACTERISTICS
(VVP1 = 3.6V, TA = 25°C, unless otherwise specified.)
PARAMETER
TEST CONDITIONS
VP1 Operating Voltage Range
VP1 UVLO Threshold
Input Voltage Rising
VP1 UVLO Hysteresis
Input Voltage Falling
Standby Supply Current
Shutdown Supply Current
ON1 = GA, VVP1 = 4.2V
VNOM1 < 1.3V, IOUT1 = 10mA
Output Voltage Regulation Accuracy
VNOM1 ≥ 1.3V, IOUT1 = 10mA
Line Regulation
VVP1 = Max(VNOM1 + 1V, 3.2V) to 5.5V
Load Regulation
IOUT1 = 10mA to 550mA
Current Limit
Oscillator Frequency
PMOS On-Resistance
NMOS On-Resistance
SW1 Leakage Current
Power Good Threshold
VOUT1 ≥ 20% of VNOM1
VOUT1 = 0V
ISW1 = -100mA
ISW1 = 100mA
VVP1 = 5.5V, VSW1 = 5.5V or 0V
Minimum On-Time
MIN
3.1
2.9
-2.4%
-1.2%
0.65
1.35
TYP
3
80
130
0.1
VNOM1c
VNOM1
0.15
0.0017
0.85
1.6
530
0.35
0.23
94
70
MAX
5.5
3.1
200
1
+1.8%
+1.8%
1.85
0.60
0.40
1
UNIT
V
V
mV
µA
µA
V
%/V
%/mA
A
MHz
kHz
Ω
Ω
µA
%VNOM1
ns
c: VNOM1 refers to the nominal output voltage level for VOUT1 as defined by the Ordering Information section.
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