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KB3301

ETC
Part Number KB3301
Manufacturer ETC
Description Step-up DC/DC converter
Published Sep 14, 2007
Detailed Description www.DataSheet4U.com KB3301 Step-up DC/DC converter General Description The KB3301 is a small, high efficiency, and low...
Datasheet PDF File KB3301 PDF File

KB3301
KB3301

Overview
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 efficiency maintains long battery lifetime.
The KB3301 is available in small package SOT-26 and SOT89-5 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 KB3301MR KB3301PR Package SOT-26 SOT-89-5 Shipping 3000pcs/Reel&Tape 3000pcs/Reel&Tape Applications ƹ ƹ ƹ ƹ ƹ ƹ 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 ) P1 / 5 KB3301 Function Block Diagram KB3301 Marking Information Symbol Descripation Step-up DC-DC Converter KB3301 3 Control Code 01 Test Circuit I(V ) Vin n ˔ i L1 10uH + C3 100uF R3 100 C2 1uF...


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