l6920 STMicroelectronics, l6920 Datasheet
l6920
Manufacturer Part Number
l6920
Description
1v High Efficiency Syncronous Step Up Converter
Manufacturer
STMicroelectronics
Datasheet
1.L6920.pdf
(13 pages)
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1.1 Applications
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Figure 1. Application Circuit
February 2005
1V HIGH EFFICIENCY SYNCRONOUS STEP UP CONVERTER
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
ONE TO THREE CELL BATTERY DEVICES
PDA AND HAND HELD INSTRUMENTS
CELLULAR PHONES - DIGITAL CORDLESS
PHONE
PAGERS
GPS
DIGITAL CAMERAS
Features
V
CC
2.5V
C2
L1
SHDN
REF
LBI
LX
7
5
2
4
L6920D
2
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
120mΩ P-channel MOSFET and, in order to improve
the efficiency, a variable frequency control is imple-
mented.
Figure 1. Package
Table 1. Order Codes
8
1
3
6
Description
Part Number
L6920DTR
L6920D
OUT
FB
LBO
GND
C3
TSSOP8
TSSOP8 Tube
C1
500mA
Tape & Reel
3.3V
Package
V
OUT
L6920
Rev. 2
1/13
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