L6920 Datasheet | STMicroelectronics

Features - 0.6 TO 5.5V OPERATING INPUT VOLTAGE - 1V START UP INPUT VOLTAGE - INTERNAL SYNCHRONOUS RECTIFIER - ZERO SHUT DOWN CURRENT - 3.3V AND 5V FIXED OR ADJUSTABLE OUTPUT VOLTAGE (2V UP TO 5.2V) - 120mΩ INTERNAL ACTIVE SWITCH - LOW BATTERY VOLTAGE DETECTION - REVERSE BATTERY PROTECTION 1.1 Applications - ONE TO THREE CELL BATTERY DEVICES - PDA AND HAND HELD INSTRUMENTS - CELLULAR PHONES - DIGITAL CORDLESS PHONE - PAGERS - GPS - DIGITAL CAMERAS Figure 1. Application Circuit Figure 1. Package TSSOP8 Table 1. Order Codes Part Number L6920D L6920DTR Package TSSOP8 Tube Tape & Reel 2 Description The L6920 is a high efficiency step-up controller requiring only three external ponents to realize the conversion from the battery voltage to the selected output voltage. The start up is guaranteed at 1V and the device is operating down to 0.6V. Internal synchronous rectifier is implemented with a 120mΩ P-channel MOSFET and, in order to improve the efficiency, a variable frequency control is implemented. VCC 2.5V L1 LX C2 SHDN LBI REF 1 5 L6920D C3 LBO GND VOUT 3.3V 500m...