AIC1634

AIC1634 1.4MHz Current-Mode Step-Up DC/DC Converter FEATURES Fixed Frequency 1.4MHz Current-Mode PWM Operation. Adjustable Output Voltage up to 30V. Guaranteed 12V/ 150mA Output with 5V Input. 2.6V to 10V Input Range. Maximum 0.1µA Shutdown Current. Programmable Soft-Start. Tiny Inductor and Capacitors are allowed. Space-Saving SOT-23-6 Package. The high switching frequency (1.4MHz) allows the use of small external components. The Soft-Start function is programmable with an external capacitor, which sets the input current ramp rate. The AIC1634 is available in a space-saving SOT-23-6 package. DESCRIPTION AIC1634 is a current-mode pulse-width modulation (PWM), step-up DC/DC Converter. The built-in high voltage N-channel MOSFET allows AIC1634 for step-up applications with up to 30V output voltage, as well as for Single Ended Primary Inductance Converter (SEPIC) and other low-side switching DC/DC converter. APPLICATIONS LCD Bias LCM OLED Driver TYPICAL APPLICATION CIRCUIT 3.3~4.2V CIN 4.7µF L1 10µH IN SHDN GND SW FB SS Css 33nF R2 12k R1 105k C1 39pF D1 VOUT =12V COUT 10µF AIC1634 L1: SLF6025-100M1R0, TDK D1: SS0540, PAN JIT CIN: EDK316BJ475KD, Taiyo Yuden COUT: TMK316C106KL, Taiyo Yuden Fig. 1 12V LCD Bias Application for Li-Ion Battery Analog Integrations Corporation Si-Soft Research Center 3A1, No.1, Li-Hsin Rd. I , Science Park , Hsinchu 300, Taiwan , R.O.C. TEL: 886-3-5772500 FAX: 886-3-5772510 www.analog.com.tw DS-1634P-02 010405 1 Free Datasheet http://www.Dat...