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PDF L6925013TR Data sheet ( Hoja de datos )
| Número de pieza | L6925013TR | |
| Descripción | HIGH EFFICIENCY MONOLITHIC SYNCHRONOUS STEP DOWN REGULATOR | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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L6925D
HIGH EFFICIENCY MONOLITHIC SYNCHRONOUS
STEP DOWN REGULATOR
s 2.7V TO 5.5V BATTERY INPUT RANGE
s HIGH EFFICIENCY: UP TO 95%
s INTERNAL SYNCHRONOUS SWITCH
s NO EXTERNAL SCHOTTKY REQUIRED
s EXTREMELY LOW QUIESCENT CURRENT
s 800mA MAX OUTPUT CURRENT
s ADJUSTABLE OUTPUT VOLTAGE FROM 0.6V
s LOW DROP-OUT OPERATION: UP TO100%
DUTY CYCLE
s SELECTABLE LOW NOISE/LOW
CONSUMPTION MODE AT LIGHT LOAD
s LOW BATTERY INPUT
s LOW BATTERY OUTPUT
s ±1% OUTPUT VOLTAGE ACCURACY
s CURRENT-MODE CONTROL
s 600kHz SWITCHING FREQUENCY
s EXTERNALLY SYNCHRONIZABLE FROM
500kHz TO 1.4MHz
s OVP
s SHORT CIRCUIT PROTECTION
APPLICATIONS
s BATTERY-POWERED EQUIPMENTS
s PORTABLE INSTRUMENTS
s CELLULAR PHONES
s PDAs AND HAND HELD TERMINALS
s DSC
s GPS
APPLICATION TEST CIRCUIT
MSOP8
ORDERING NUMBERS: L6925D (Tube)
L6925013TR (Tape & Reel)
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.
VIN=2.7V to 5.5V
C1
10µF
6.3V
SYNC
R2
600K
VCC
LBI
7
6
1
R1
100K LBO 8
2
COMP
D01IN1238B
C2
220pF
L 6.8µH
5
LX
R4
200K
VFB
3
4
GND
R3
100K
VOUT=1.8V
C4
10µF
6.3V
September 2003
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1 page  
L6925D
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted
by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject
to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not
authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics.
All other names are the property of their respective owners
© 2003 STMicroelectronics - All rights reserved
STMicroelectronics GROUP OF COMPANIES
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