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KB3301MR 参数 Datasheet PDF下载

KB3301MR图片预览
型号: KB3301MR
PDF下载: 下载PDF文件 查看货源
内容描述: 升压型DC / DC转换器 [Step-up DC/DC converter]
分类和应用: 转换器
文件页数/大小: 5 页 / 97 K
品牌: KINGBOR [ KINGBOR TECHNOLOGY CO ]
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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
Features
90% Efficiency
High Supply Capability to Deliver 5.0V 500mA
with input 3.6V-4.2V
14µA Quiescent (switch-off) Supply Current
500KHz Fixed Switching Frequency
Zero Shutdown Mode Supply Current
Providing Flexibility for Using Internal and
External Power Switches
1.0V Low Start-up Input Voltage
Small SOT-26 & SOT89-5 Package
Ordering Information
Item
KB3301MR
KB3301PR
Package
SOT-26
SOT-89-5
Shipping
3000pcs/Reel&Tape
3000pcs/Reel&Tape
Applications
LCD Panel
DSC
MP3
Wireless Equipment
Portable Instrument
PDA
Package Information
Typical Application Circuit
L1
Vin
+
C3
100uF
C2
1uF
VDD
CE
EXT
LX
3.3~10uH
1N5819
D1
SOT89-5
Pin Configurations
SOT-26
1
2
3
4
5
6
SOT-26
Vout
R1
3.3V/5V
1.6M/100K
+
KB3301
FB
GND
R2
C1
100uF
980k/33K
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 )
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