파트넘버.co.kr KB3301 데이터시트 PDF


KB3301 반도체 회로 부품 판매점

Step-up DC/DC converter



ETC 로고
ETC
KB3301 데이터시트, 핀배열, 회로
www.DataSheet4U.com
KB3301
Step-up DC/DC converter
General Description
The KB3301 is a small, high efficiency, and low voltage
step-up DC/DC converter with an Adaptive Current Mode
PWM control loop, includes an error amplifier, ramp
generator, comparator, switch pass element and driver
in which providing a stable and high efficient operation
over a wide range of load currents. It operates in stable
waveforms without external compensation.
The low start-up input voltage below 0.8V makes KB3301
suitable for 1 to 4 battery cells applications of providing
up to 300mA output current. The 500KHz high switching
rate minimized the size of external components. Besides,
the 14µA low quiescent current together with high effic-
iency maintains long battery lifetime.
The KB3301 is available in small package SOT-26 and
SOT89-5
Applications
ƹ LCD Panel
ƹ DSC
ƹ MP3
ƹ Wireless Equipment
ƹ Portable Instrument
ƹ PDA
Features
ƹ 90% Efficiency
ƹ High Supply Capability to Deliver 5.0V 500mA
with input 3.6V-4.2V
ƹ 14µA Quiescent (switch-off) Supply Current
ƹ 500KHz Fixed Switching Frequency
ƹ Zero Shutdown Mode Supply Current
ƹ Providing Flexibility for Using Internal and
External Power Switches
ƹ 1.0V Low Start-up Input Voltage
ƹ Small SOT-26 & SOT89-5 Package
Ordering Information
Item
Package Shipping
KB3301MR
SOT-26
3000pcs/Reel&Tape
KB3301PR
SOT-89-5 3000pcs/Reel&Tape
Package Information
Typical Application Circuit
L1 D1
Vin + 3.3~10uH
C3 1N5819
100uF
C2
1uF
VDD
CE LX
KB3301
EXT FB
GND
Vout
R1 3.3V/5V
1.6M/100K
+
C1
R2 100uF
980k/33K
SOT89-5
SOT-26
Pin Configurations
SOT-26
1
2
3
4
5
6
SOT-89-5 Pin NamePin Function
1 CE Chip enable
EXT Output
5 GND Ground
4 LX Switching
2 VDD Input
3 FB Feedback input 1.25V
Note:Vin=3.6~4.2V, Vout=5.0V 500mA ( USB host application )
P1 / 5


KB3301 데이터시트, 핀배열, 회로
Function Block Diagram
KB3301
Marking Information
㽴㽵
Symbol
3
01
Descripation
Step-up DC-DC Converter
KB3301
Control Code
SOT-26
SOT-89-5
KB3301
Test Circuit
I(Vi ) L1
Vin ˔n
10uH
+ C3
100uF
R3
100
˔
I(VDD)
VDD
CE LX
KB3301
EXT
FB
GND
C2
1uF
D1
1N5819
+
C4
R1 C1
1.6M/1001K02uF 100uF
Vout
3.3V/5V
C5
106uF
R2
980K/33K
P2 / 5




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KB3301 converter

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