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KB2301 Schematic ( PDF Datasheet ) - Kingbor Technology

Teilenummer KB2301
Beschreibung Step-Up DC-DC Converter
Hersteller Kingbor Technology
Logo Kingbor Technology Logo 




Gesamt 10 Seiten
KB2301 Datasheet, Funktion
Kingbor Technology Co.,Ltd
TEL:(86)0755-26508846 FAX:(86)0755-26509052
www.DataSheet4U.com
Step-Up DC-DC Converter
KB2301
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
KB  ; ; ; ;
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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KB2301 Datasheet, Funktion
Kingbor Technology Co.,Ltd
TEL:(86)0755-26508846 FAX:(86)0755-26509052
www.DataSheet4U.com
Efficiency vs. Output Current
KB2301











9
9 9
 
Output Current(mA)
9
9
L=47uH
C=47uF
VOUT=3.4V








9

Output Current vs. Ripple Voltage
9
9
9
L=47uH
9 C=47uF
VOUT=3.4V
     
Output Current (mA)
6

6 Page







SeitenGesamt 10 Seiten
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