參數(shù)資料
型號(hào)： L6928D
廠商： 意法半導(dǎo)體
英文描述： HIGH EFFICIENCY MONOLITHIC SYNCHRONOUS STEP DOWN REGULATOR
中文描述： 高效率單片同步降壓調(diào)節(jié)
文件頁(yè)數(shù)： 1/9頁(yè)
文件大?。?/td> 197K
代理商： L6928D
1/9
L6928D
February 2005
1
■
2V TO 5.5V BATTERY INPUT RANGE
■
HIGH EFFICIENCY: UP TO 95%
■
INTERNAL SYNCHRONOUS SWITCH
■
NO EXTERNAL SCHOTTKY REQUIRED
■
EXTREMELY LOW QUIESCENT CURRENT
■
1
μ
A MAX SHUTDOWN SUPPLY CURRENT
■
800mA MAX OUTPUT CURRENT
■
ADJUSTABLE OUTPUT VOLTAGE FROM 0.6V
■
LOW DROP-OUT OPERATION: UP TO100%
DUTY CYCLE
■
SELECTABLE LOW NOISE/LOW
CONSUMPTION MODE AT LIGHT LOAD
■
POWER GOOD SIGNAL
■
±1% OUTPUT VOLTAGE ACCURACY
■
CURRENT-MODE CONTROL
■
1.4MHz SWITCHING FREQUENCY
■
EXTERNALLY SYNCHRONIZABLE FROM
1MHz TO 2MHz
■
OVP
■
SHORT CIRCUIT PROTECTION
FEATURES
2
■
BATTERY-POWERED EQUIPMENTS
■
PORTABLE INSTRUMENTS
■
CELLULAR PHONES
■
PDAs AND HAND HELD TERMINALS
■
DSC
■
GPS
APPLICATIONS
3
DESCRIPTION
The device is dc-dc monolithic regulator specifically
designed to provide extremely high efficiency.
L6928D supply voltage can be as low as 2V allowing
its use in single Li-ion cell supplied applications. Out-
put voltage can be selected by an external divider
down to 0.6V. Duty Cycle can saturate to 100% al-
lowing low drop-out operation. The device is based
on a 1.4MHz fixed-frequency, current mode-architec-
ture. Low Consumption Mode operation can be se-
lected at light load conditions, allowing switching
losses to be reduced. L6928D is externally synchro-
nizable with a clock which makes it useful in noise-
sensitive applications. Other features like Power-
good, Overvoltage protection, Shortcircuit protection
and Thermal Shutdown (150°C) are also present.
HIGH EFFICIENCY MONOLITHIC SYNCHRONOUS
STEP DOWN REGULATOR
Figure 2. Application Test Circuit
L 4.7
μ
H
SYNC
LX
VFB
C1
10
μ
F
6.3V
C2
220pF
C4
10
μ
F
6.3V
R2
200K
R3
500K
R1
100K
V
IN
=2V to 5.5V
V
OUT
=1.8V
V
CC
RUN
COMP
GND
PGOOD
D01IN1528
7
6
1
8
3
5
2
4
Figure 1. Packages
Table 1. Order Codes
Part Number
L6928D
L6928D013TR
Package
MSOP8 in Tube
MSOP8 in Tape & Reel
MSOP8
Rev. 2
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6928D013TR 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 2.0 to 5.5V Step-Dwn RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
L6928Q1 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 Hi EFFICIENCY MONOLITHIC SYNC RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
L6928Q1TR 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 HIGH EFFICIENCY MONO LITHIC SYNCHRONOUS RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
L6928TQ1TR 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:High efficiency monolithic synchronous step down regulator
L6928TR 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:High efficiency monolithic synchronous step down regulator
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