MAX1896

19-2221; Rev 1; 3/04 1.4MHz SOT23 Current-Mode Step-Up DC-DC Converter MAX1896 General Description The MAX1896 step-up DC-DC converter incorporates high-performance current-mode, fixed-frequency, pulse-width modulation (PWM) circuitry and an internal 0.7Ω N-channel MOSFET to provide a highly efficient regulator with fast response. High switching frequency (1.4MHz) allows fast loop response and easy filtering with small components. The MAX1896 can produce an output voltage as high as 13V from an input as low as 2.6V. Soft-start is programmable with an external capacitor, which sets the input current ramp rate. In shutdown mode, current consumption is reduced to 0.01µA. The MAX1896 is available in a space-saving 6-pin SOT23 package. The ultra-small package and high switching frequency allow cost and space-efficient implementations. ♦ >90% Efficiency ♦ Adjustable Output Up to 13V ♦ Guaranteed 12V/120mA Output from 5V Input ♦ 2.6V to 5.5V Input Range ♦ LT1613 Pin Compatible ♦ 0.01µA Shutdown Current ♦ Programmable Soft-Start ♦ Space-Saving 6-Pin SOT23 Package Features Applications Notebook Computers LCD Displays PCMCIA Cards Portable Applications Hand-Held Devices PART MAX1896EUT-T Ordering Information TEMP RANGE -40°C to +85°C PIN-PACKAGE 6 SOT23-6 Typical Operating Circuit INPUT 2.6V TO 5.5V Pin Configuration TOP VIEW OUTPUT UP TO 13V UP TO 600mA IN LX LX 1 6 IN GND 2 MAX1896 5 SS MAX1896 R1 ON OFF SHDN SS FB GND R2 FB 3 4 SHDN SOT23 ________________________...