L4957AV33 Datasheet PDF - STMicroelectronics
| Part Number | L4957AV33 | |
| Description | UP TO 5A ULDO LINEAR REGULATOR | |
| Manufacturers | STMicroelectronics | |
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® L4957A
UP TO 5A ULDO LINEAR REGULATOR
PRODUCT PREVIEW
1.5V, 1.8V, 2.5V AND 3.3V FIXED OUTPUT
VOLTAGE
3V TO 14V INPUT VOLTAGE RANGE
200mΩ Rdson TYPICAL @ Tj = 125°C
0.6V max. DROP-OUT AT 2A
EXCELLENT LOAD REGULATION
0.6mA QUIESCENT CURRENT AT ANY LOAD
SHORT CIRCUIT PROTECTION
THERMAL SHUTDOWN
APPLICATIONS
MOTHER BOARDS
PROCESSOR I/O & SUPPLIES
LOW VOLTAGE MEMORY & CHIP SET SUP-
PLIES
GRAPHIC & SOUND CARDS
LOW VOLTAGE LOGIC SUPPLIES
POST REGULATOR FOR SMPS
DESCRIPTION
The L4957A devices are Ultra Low Drop Output
linear regulators with an internal N-channel MOS
of 200mΩ particulary suitable for low voltage/low
dropout applications.
Operating with a input voltage from 3V to 14V
they are capable to deliver up to 5A.
The devices are ideal for use as one of the sup-
MULTIPOWER BCD TECHNOLOGY
3
1
Versawatt TO-220
D2PAK
ORDERING NUMBERS:
L4957AV1.5
L4957AV1.8
L4957AV2.5
L4957AV3.3
L4957AD1.5
L4957AD1.8
L4957AD2.5
L4957AD3.3
plies required by processor, for example they are
the cost effective and efficient solution for conver-
sion from 3.3V (rail bus) to 2.5V @ 2.5A or to
1.5V with high current rating.
Fast response transient minimise the output ca-
pacitor value. A minimum of 22µF assures the
stability in all load conditions.
The on-chip trimming technique offers a tighter
voltage reference tolerance (with ± 2% including
line and load variation) beside to ensure a con-
trolled short circuit current. Thermal shutdown
provides protection against overload conditions
that creates excessive junction temperature.
TYPICAL APPLICATION
3V to 14V
IN
1
OUT
3
L4957A
VOUT
C1
2
GND
C2
D00IN1107A
May 2000
This is preliminary information on a new product now in development. Details are subject to change without notice.
1/7
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DIM.
mm
inch
MIN. TYP. MAX. MIN. TYP. MAX.
A 4.40
4.60 0.173
0.181
C 1.23
1.32 0.048
0.051
D 2.40
2.72 0.094
0.107
E 0.49
0.70 0.019
0.027
F 0.61
0.88 0.024
0.034
F1 1.14
1.70 0.044
0.067
F2 1.14
1.70 0.044
0.067
G 4.95
5.15 0.194
0.203
G1 2.40
2.70 0.094
0.106
H2 10.0
10.4 0.393
0.409
L2 16.4
0.645
L4 13.0
14.0 0.511
0.551
L5 2.65
2.95 0.104
0.116
L6 15.25
15.75 0.600
0.620
L7 6.20
6.60 0.244
0.260
L9 3.50
3.93 0.137
0.154
M 2.6
0.102
Dia 3.75
3.85 0.147
0.151
L4957A
OUTLINE AND
MECHANICAL DATA
Versawatt (TO220)
TO220MEC
5/7
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for L4957AV33 electronic component. |
| Information | Total 7 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ L4957AV33.PDF Datasheet ] | |
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