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L6920

February 2005

1

Features

OUTPUT VOLTAGE (2V UP TO 5.2V)

Ω INTERNAL ACTIVE SWITCH

1.1 Applications

PHONE

2

Description

The L6920 is a high efficiency step-up controller re-

quiring only three external components to realize the

conversion from the battery voltage to the selected

output voltage.

The start up is guaranteed at 1V and the device is op-

erating down to 0.6V.

Internal synchronous rectifier is implemented with a

120m

Ω P-channel MOSFET and, in order to improve

the efficiency, a variable frequency control is imple-

mented.

1V HIGH EFFICIENCY SYNCRONOUS STEP UP CONVERTER

Figure 1. Application Circuit

L1

LX

8

OUT

1

FB

3

6

LBO

GND

SHDN

7

5

LBI

2

REF

4

2.5V

3.3V

500mA

L6920D

C2

C3

C1

Figure 1. Package

Table 1. Order Codes

Part Number

Package

L6920D

TSSOP8 Tube

L6920DTR

Tape & Reel

TSSOP8

Rev. 2