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參數資料
| 型號： | L6925D |
| 廠商： | 意法半導體 |
| 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節 |
| 文件頁數： | 1/5頁 |
| 文件大小： | 57K |
| 代理商： | L6925D |
1/5
L6925D
September 2003
I
2.7V TO 5.5V BATTERY INPUT RANGE
I
HIGH EFFICIENCY: UP TO 95%
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INTERNAL SYNCHRONOUS SWITCH
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NO EXTERNAL SCHOTTKY REQUIRED
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EXTREMELY LOW QUIESCENT CURRENT
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800mA MAX OUTPUT CURRENT
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ADJUSTABLE OUTPUT VOLTAGE FROM 0.6V
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LOW DROP-OUT OPERATION: UP TO100%
DUTY CYCLE
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SELECTABLE LOW NOISE/LOW
CONSUMPTION MODE AT LIGHT LOAD
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LOW BATTERY INPUT
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LOW BATTERY OUTPUT
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±1% OUTPUT VOLTAGE ACCURACY
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CURRENT-MODE CONTROL
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600kHz SWITCHING FREQUENCY
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EXTERNALLY SYNCHRONIZABLE FROM
500kHz TO 1.4MHz
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OVP
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SHORT CIRCUIT PROTECTION
APPLICATIONS
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BATTERY-POWERED EQUIPMENTS
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PORTABLE INSTRUMENTS
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CELLULAR PHONES
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PDAs AND HAND HELD TERMINALS
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DSC
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GPS
DESCRIPTION
The device is dc-dc monolithic regulator specifically
designed to provide extremely high efficiency.
The device has on UVLO set at 2.7V cause it is part-
icurarly thought for single Li-ion cell applications.
Output 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 600kHz fixed-frequency, current mode-architec-
ture. Low Consumption Mode operation can be se-
lected at light load conditions, allowing switching
losses to be reduced. L6925D is externally synchro-
nizable with a clock which makes it useful in noise-
sensitive applications. LBI pin can be used to have a
LBO signal when the Battery voltage is lower than a
preset value. Other features like, Overvoltage protec-
tion, Shortcircuit protection and Thermal Shutdown
(150°C) are also present.
MSOP8
ORDERING NUMBERS:
L6925D (Tube)
L6925013TR (Tape & Reel)
HIGH EFFICIENCY MONOLITHIC SYNCHRONOUS
STEP DOWN REGULATOR
APPLICATION TEST CIRCUIT
L 6.8
μ
H
SYNC
LX
VFB
C1
10
μ
F
6.3V
C2
220pF
C4
10
μ
F
6.3V
R4
200K
R2
600K
R1
100K
R3
100K
V
IN
=2.7V to 5.5V
V
OUT
=1.8V
V
CC
LBI
COMP
GND
LBO
D01IN1238B
7
6
1
8
3
5
2
4
相關PDF資料 |
PDF描述 |
|---|---|
| L6926013TR | High efficiency monolithic synchronous step down regulator |
| L6926D1 | High efficiency monolithic synchronous step down regulator |
| L6926D1013TR | High efficiency monolithic synchronous step down regulator |
| L6926Q1 | High efficiency monolithic synchronous step down regulator |
| L6926Q1TR | High efficiency monolithic synchronous step down regulator |
相關代理商/技術參數 |
參數描述 |
|---|---|
| L6925D_04 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HIGH EFFICIENCY MONOLITHIC SYNCHRONOUS STEP DOWN REGULATOR |
| L6925D013TR | 功能描述:直流/直流開關調節器 Synchronous Step-Dwn RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| L6926 | 功能描述:直流/直流開關調節器 Hi EFFICIENCY MONOLITHIC SYNC RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| L6926_06 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:High efficiency monolithic synchronous step down regulator |
| L6926_08 | 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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