ACT5880
Rev 2, 03-Sep-13
STEP-UP DC/DC ELECTRICAL CHARACTERISTICS
(VPOWER = 3.6V, TA = 25°C, unless otherwise specified.)
PARAMETER
Operating Voltage Range
UVLO
CONDITIONS
MIN
2.7
TYP
MAX
6
UNIT
VVBAT
VVBAT
V
2.5
2.6
2.7
UVLO Hysteresis
100
mV
V
Output Programming Range
3
41.4
3
Output Voltage Accuracy
Maximum Load Current
FB3 Feedback Voltage
FB3 Input Current
IOUT=10mA.
-3
%
A
VPOWER=4.2V, VOUT3=5V, Voltage regulation option.
0.5
/
/
mV
nA
Not available in voltage regulation mode,
contact Active-semi for more details.
From the I2C last bit latched or PWRHLD set 1 to
output changes.
Turn-On Propagation Delay
150
200
2
µs
Time between 2 intersection points of the ramp
slope and 2 voltages; 0% and 100% of the final, no
and full load.
Soft Start Ramp Time,
voltage regulation option.
Normal operation, is the system oscillator
frequency.
Switch Frequency
1.8
2.2
90
MHz
ns
Minimum Off-Time
Minimum On-Time
Efficiency
40
75
Voltage regulation option, VOUT3=5V, Load=200mA.
OK[ ] asserts 0
90
%
A
Switch Current Limit
0.75
OK Threshold to Normal
Ratio
93
%
No Load Current
Switch in operation
Switch stops
1300
80
µA
Shutdown Current
Note:
1
The VPOWER is the voltage input that the Step-up DC/DC inductor connects to.
See the TYPICAL PERFORMANCE CHARACTERISTICS for:
The REG3 Start up Waveform, Full Load.
The REG3 Step Transition Response, Full Load.
The REG3 Efficiency Plot.
The REG3 Load Transition Response.
The REG3 External PWM Modulation to Current.
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