KB2301 Datasheet, PDF (1/10 Pages) Kingbor Technology Co – Step-Up DC-DC Converter

Kingbor Technology Co.,Ltd
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KB2301
Step-Up DC-DC Converter
General Description
The kB2301 Series are PFM step-up DC-DC
converters with very low ripple noise due to the
high operation frequency. The maximum
operation frequency is 400KHz.
Only three components are required to realize the
conversion from the battery voltage to a selected
output voltage.
A driver pin (EXT) is provided for driving
external power transistor to extend the output
current capability where large current is required.
Enable pin (EN) is also provided so that the
circuit can be powered down.
Ordering Information
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Package Type:
T: SOT-23-3
F: SOT-23-5
E: SOT-89
Output Voltage:
20: 2.0V
21: 2.1V
Ă
49: 4.9V
50: 5.0V
External switch
E: use external switch
L: use internal switch
Features
y400KHz Maximum Operation Frequency
y2.0V to 5.0V Output Voltage With 0.1V Step
yLow Start-up Voltage: 0.8V at 1mA
y2% Output Voltage Accuracy
yUp to 88% Efficiency
yOutput current: 300mA at 2.5V input, 3.3V
output
yLow Ripple and Low Noise
yOutput Current Extendable by External
Switch
Applications
yPower source for applications where a higher
voltage than the battery voltage is required
yOne to three cell battery devices
yPower source for cameras, camcorders,
VCRs, PDAs, pagers and hand held
communication instrument
Typical Applications
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