19-1406; Rev 1; 1/99
KIT ATION EVALU SHEET A T A WS D FOLLO
ECB and LCD Display Bias Supply with Accurate Output Voltage and Temperature Compensation
General Description
The MAX1729 micropower step-up/step-down DC-DC converter is ideally suited for electrically controlled birefringence (ECB) and liquid-crystal-display (LCD) biassupply generation.
It provides step-up/step-down voltage conversion and reduces output ripple by using a step-up DC-DC converter followed by a linear
regulator.
This architecture permits a physically smaller inductor than those used in competing SEPIC and flyback topologies.
This device features low quiescent current (67µA typical).
A logic-controlled shutdown mode ...