E-L6925D013TR STMicroelectronics, E-L6925D013TR Datasheet

IC BUCK SYNC ADJ .8A 8MSOP

E-L6925D013TR

Manufacturer Part Number
E-L6925D013TR
Description
IC BUCK SYNC ADJ .8A 8MSOP
Manufacturer
STMicroelectronics
Type
Step-Down (Buck)r
Datasheet

Specifications of E-L6925D013TR

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
0.6 ~ 5.5 V
Current - Output
800mA
Frequency - Switching
600kHz
Voltage - Input
2.7 ~ 5.5 V
Operating Temperature
-40°C ~ 150°C
Mounting Type
Surface Mount
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Power - Output
450mW
Output Voltage
5.5 V
Operating Temperature Range
- 40 C to + 150 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-4594-2

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Part Number:
E-L6925D013TR
Manufacturer:
ST
0
1
1.1 APPLICATIONS
Figure 2. Application Test Circuit
September 2004
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
BATTERY-POWERED EQUIPMENTS
PORTABLE INSTRUMENTS
CELLULAR PHONES
PDAs AND HAND HELD TERMINALS
DSC
GPS
FEATURES
V
HIGH EFFICIENCY MONOLITHIC SYNCHRONOUS
IN
=2.7V to 5.5V
10 F
6.3V
C1
600K
100K
D01IN1238B
R2
R1
SYNC
LBO
V
LBI
CC
COMP
7
6
1
8
2
220pF
C2
2
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.
Figure 1. Package
Table 1. Order Codes
4
STEP DOWN REGULATOR
GND
5
3
DESCRIPTION
L6925D013TR
Part Number
LX
VFB
L6925D
L 6.8 H
200K
100K
R4
R3
MSOP8
V
OUT
10 F
=1.8V
6.3V
C4
MSOP8 (Tube)
Tape & Reel
Package
L6925D
Rev. 3
1/6

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E-L6925D013TR Summary of contents

Page 1

... 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 ...

Page 2

... This pin allows to select Low Noise/ Low Consumption Mode or to sychronize the device. 8 LBO Battery low voltage detector output. If the voltage at the LBI pin drops below the internal thrshold, LBO goes low. The LBO is an open drain output. A pull_up resistor should be connected between the pin and the output voltage 2/6 Parameter ...

Page 3

... Table 5. ELECTRICAL CHARACTERISTICS (T Symbol Parameter V Operating input voltage cc V Turn On threshold Turn Off threshold cc OFF V Hysteresis cc hys R High side Ron p R Low side Ron n I Peak current limit lim Valley current limit V Output voltage range out f Oscillator frequency osc f Sync mode clock (*) ...

Page 4

... L 0.400 0.550 0.700 L1 0.950 k 0˚ (min.) 6˚ (max.) aaa 0.100 Note and F does not include mold flash or protrusions. Mold flash or potrusions shall not exceed 0.15mm (.006inch) per side. 4/6 inch MIN. TYP. MAX. 0.043 0.002 0.006 0.03 0.033 ...

Page 5

... Table 6. Revision History Date Revision January 2004 September 2004 2 First Issue in EDOCS DMS 3 Changed Style-sheet and Table 2 Description of Changes L6925D 5/6 ...

Page 6

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