參數(shù)資料
型號: L4956
廠商: 意法半導體
英文描述: 5A LOW DROP LINEAR REGULATOR
中文描述: 第5A低壓降線性穩(wěn)壓器
文件頁數(shù): 1/8頁
文件大?。?/td> 80K
代理商: L4956
L4956
5A LOW DROP LINEAR REGULATOR
SPLITTED SUPPLY VOLTAGE
PROVED EFFICIENCY:
- V
PW
: 3V MIN. POWER SUPPLYVOLTAGE
- V
SIG
: 4.5VMIN. SIGNALSUPPLYVOLTAGE
5A OUTPUT CURRENT
FASTLOAD TRANSIENT RESPONSE
0.75V TYP. DROP OUT VOLTAGE AT 5A
INHIBITWITHZEROCURRENT COMSUMPTION
POWER GOOD
SHORT CIRCUIT PROTECTION
THERMALSHUTDOWN
HEPTAWATT PACKAGE
APPLICATIONS
PENTIUM
ANDPOWER PC
SUPPLIES
LOW COST SOLUTION FOR 3.3V TO 1.5V
CONVERSION
SUITABLE
FOR
APPLICATIONS
STAND BY FEATURE
FOR
IM-
WITH
DESCRIPTION
The L4956 is an adjustablemonolithiclinear regu-
lator designed to satisfy very heavy load transient
and efficientpower conversionfrom 3.3V to 1.26V
and lower, up to 5A.
Designed in BCDII technology, it uses a charge
pump techniqueto have a properinternal N-chan-
nel gate drive. The signal supply voltage input
V
SIG
can operate from 4.5V up to an absolute of
7V and the power supply voltage input V
PW
can
opearte from 3V min to an absolute of 7V. An
RDSON of 150mV gives a voltagedrop of 750mV
at 5A of loadcurrent.
Very fast load transients and
±
1% of reference
voltage precision makes this device suitable for
supplying last micrprocessors generation and low
voltagelogics.
The Heptawatt package enriches the device with
auxiliary functions like power good and inhibit.
March 1998
HEPTAWATT
ORDERING NUMBER:
L4956
MULTIPOWER BCD TECHNOLOGY
V
PW
V
SIG
D96IN374B
1
2
7
OUT
5
ADJ
4
GND
L4956
C
1
R
1
R
2
C
2
V
O
V
PW
=3.3Vbus
V
SIG
=
5Vbus
3
6
INH
PG
C
3
TYPICALAPPLICATION
1/8
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