AP3602B Datasheet | BCD Semiconductor

Data Sheet 100m A REGULATED CHARGE PUMP General Description The AP3602A/B are regulated step-up DC/DC converters based on charge pump technique. These ICs have the ability to supply 100m A constant output current or 250m A peak output current for 100ms from 3.0V to 5V input (2.7V to 4.5 V for AP3602B), so they can be used as white LEDs driver or flash LED driver. The AP3602A/B have very low power dissipation and high efficiency in typical applications. Other Features include over-temperature protection, low temperature coefficient and etc. to meet some special requirements of hand-held battery powered devices. Only 3 external capacitors are required in applications, which helps to save space and lower cost. These chips also have a disable terminal to turn on or turn off the chip to ease the use. The AP3602A/B are available in SOT-23-6 package. AP3602A/B Features - - - Low Quiescent Current: 13µA Typical Regulated Output Voltage Precision: 4% High Output Current: 100m A when VIN≥3.0V 50m A when VIN≥2.7V High Frequency: up to 1.2 MHz Low Shutdown Supply Current: <1µA High Output Peak Current: 250m A for 100ms Over Temperature Protection Operating Temperature Range: -40o C to 85o C - - - - - Applications - - - - - Mobile Phone Backlight Driver Camera Flash LED Driver MP3, MP4 Handheld Device Portable munication Device .. SOT-23-6 Figure 1. Package Type of AP3602A/B Apr. 2007 Rev. 1.2 1 BCD Semiconductor Manufacturing Limited Data Sheet 100m A REGULATED CHARGE PUMP Pin Configuration K Package (SOT-23-6) AP3602A/B VOUT GND SHDN 1 2 3 6 5 4 C+ VIN C- Figure 2. Pin Configuration of AP3602A/B (Top View) Pin Description Pin Number 1 Pin Name VOUT Function Regulated Output Voltage. VOUT should be bypassed with a 1µF to 22µF low ESR ceramic capacitor which is placed as close to the pin as possible for best performance Ground. GND should be tied to a ground plane for best performance. The COUT and CIN should be placed as close to this pin as...