參數(shù)資料
型號(hào)： L6920DTR
廠商： STMICROELECTRONICS
元件分類： 穩(wěn)壓器
英文描述： 1.2 A SWITCHING REGULATOR, PDSO8
封裝： 4.40 MM, TSSOP-8
文件頁(yè)數(shù)： 1/14頁(yè)
文件大?。?/td> 318K
代理商： L6920DTR
1/13
L6920
February 2005
1
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)
■ 120m
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
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
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
VCC
VOUT
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
相關(guān)PDF資料
PDF描述
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