AT1382B Datasheet | Aimtron Technology

Features - Low start-up power supply voltage :1.4V(CH4) - Wide supply voltage range from 1.8V to 7V (CH1~4) - High speed operation is possible: Maximum 1 MHz - Supports for down and up/down Zeta conversion (CH1) - Supports for up, flyback and up/down SEPIC conversion (CH2,3,4) - Totem-pole type output for MOSFET - Built-in On/Off function - Built-in Short-Circuit Protection General Description The AT1382B is a 4-channel PWM DC/DC control IC for low voltage applications with a soft start function and short circuit detection function. This IC is ideal for up conversion, down conversion, and up/down conversion (using a step-up/stepdown Zeta(CH1) and SEPIC(CH2,3,4) system with free input and output settings). Four channels can be built in the LQFP48 package, each channel be controlled, and soft-start. The AT1382B include one parator to generate low-battery warning outputs. It also contains a gain block that can be used with an external P-channel MOSFET to make a low-dropout linear regulator. Applications - Digital Cameras - CCD Imaging Devices - Camcorders Pin Assignment Ordering Information Part number AT1382BF Package LQFP48 Marking AT1382BF Aimtron reserves the right without notice to change this circuitry and specifications. 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 : http://.aimtron..tw Fax: 886-3-563-0879 Email: service@aimtron..tw 1 Preliminary Product Information 4-Channel DC-DC Converter for DSC Pin Description Pin No. Pin name 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 DTC4 FB4 IN4 CS4 CTL4 DTC3 FB3 IN3 CS3 CTL3 CSCP VREF GND GND VBG VCC VCC POR RT CT VB CTL ENLD CT2 CTL2 CS2 IN2 FB2 DTC2 CTL1 CS1 IN1 FB1 DTC1 LBI LBO AI AO OUT1_1 OUT1_2 OUT2_1 OUT2_2 N.C. PVCC N.C. PGND OUT3 OUT4 I/O I O I I I O I I O P P TEST P P TEST O I I TEST I I O I I I O I I O I O O O O O P P O O Function CH4 Dead...