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參數(shù)資料
| 型號(hào)： | L6925D013TR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.2 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | MSOP-8 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大?。?/td> | 55K |
| 代理商： | L6925D013TR |
1/6
L6925D
September 2004
1FEATURES
■
2.7V TO 5.5V BATTERY INPUT RANGE
■
HIGH EFFICIENCY: UP TO 95%
■
INTERNAL SYNCHRONOUS SWITCH
■
NO EXTERNAL SCHOTTKY REQUIRED
■
EXTREMELY LOW QUIESCENT 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
■
LOW BATTERY INPUT
■
LOW BATTERY OUTPUT
■
±1% OUTPUT VOLTAGE ACCURACY
■
CURRENT-MODE CONTROL
■
600kHz SWITCHING FREQUENCY
■
EXTERNALLY SYNCHRONIZABLE FROM
500kHz TO 1.4MHz
■
OVP
■
SHORT CIRCUIT PROTECTION
1.1 APPLICATIONS
■
BATTERY-POWERED EQUIPMENTS
■
PORTABLE INSTRUMENTS
■
CELLULAR PHONES
■
PDAs AND HAND HELD TERMINALS
■
DSC
■
GPS
2DESCRIPTION
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-architecture. Low Consumption Mode
operation can be selected at light load conditions, al-
lowing switching losses to be reduced. L6925D is ex-
ternally synchronizable 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 protection, Shortcircuit
protection and Thermal Shutdown (150°C) are also
present.
HIGH EFFICIENCY MONOLITHIC SYNCHRONOUS
STEP DOWN REGULATOR
Figure 2. Application Test Circuit
L 6.8
H
SYNC
LX
VFB
C1
10
F
6.3V
C2
220pF
C4
10
F
6.3V
R4
200K
R2
600K
R1
100K
R3
100K
VIN=2.7V to 5.5V
VOUT=1.8V
VCC
LBI
COMP
GND
LBO
D01IN1238B
7
6
1
8
3
5
24
Rev. 3
Figure 1. Package
Table 1. Order Codes
Part Number
Package
L6925D
MSOP8 (Tube)
L6925D013TR
Tape & Reel
MSOP8
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6926 | 功能描述:直流/直流開關(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 |
| 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 |
| L6926_11 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:High efficiency monolithic synchronous step down regulator |
| L6926013TR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Synchronous Step-Dwn RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(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 |
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