LP2975IMM-5.0 National Semiconductor, LP2975IMM-5.0 Datasheet
![Driver IC](/photos/18/97/189768/3778330_sml.jpg)
LP2975IMM-5.0
Manufacturer Part Number
LP2975IMM-5.0
Description
Driver IC
Manufacturer
National Semiconductor
Datasheets
1.LP2975IMM-5.0.pdf
(20 pages)
2.LP2975IMM-5.0.pdf
(19 pages)
3.LP2975IMM-5.0.pdf
(19 pages)
Specifications of LP2975IMM-5.0
Device Type
LDO
Driver Case Style
SOIC
No. Of Pins
8
Mounting Type
Surface Mount
Voltage Regulator Type
LDO Linear
Supply Voltage Min
1.8V
Peak Reflow Compatible (260 C)
No
Output Voltage
5V
Output Voltage Max
5V
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LP2975IMM-5.0
Manufacturer:
MICROCHIP
Quantity:
2 000
Company:
Part Number:
LP2975IMM-5.0
Manufacturer:
NS
Quantity:
8 141
Company:
Part Number:
LP2975IMM-5.0
Manufacturer:
NS
Quantity:
572
Part Number:
LP2975IMM-5.0
Manufacturer:
NS/国半
Quantity:
20 000
Part Number:
LP2975IMM-5.0/NOPB
Manufacturer:
NS/国半
Quantity:
20 000
© 1999 National Semiconductor Corporation
LP2975
MOSFET LDO Driver/Controller
General Description
A high-current LDO regulator is simple to design with the
LP2975 LDO Controller. Using an external P-FET, the
LP2975 will deliver an ultra low dropout regulator with ex-
tremely low quiescent current.
High open loop gain assures excellent regulation and ripple
rejection performance.
The trimmed internal bandgap reference provides precise
output voltage over the entire operating temperature range.
Dropout voltage is “user selectable” by sizing the external
FET: the minimum input-output voltage required for opera-
tion is the maximum load current multiplied by the R
of the FET.
Overcurrent protection of the external FET is easily imple-
mented by placing a sense resistor in series with V
57 mV detection threshold of the current sense circuitry mini-
mizes dropout voltage and power dissipation in the resistor.
The standard product versions available provide output volt-
ages of 12V, 5V, or 3.3V with guaranteed 25˚C accuracy of
1.5% (“A” grade) and 2.5% (standard grade).
Block Diagram
*R
part.
SET
values are: 208k for 12V part, 72.8k for 5V part, and 39.9k for 3.3V
DS100034
DS
IN
. The
(ON)
DS100034-1
Features
n Simple to use, few external components
n Ultra-small mini SO-8 package
n 1.5% (A grade) precision output voltage
n Low-power shutdown input
n
n Low operating current (180 µA typical
n Wide supply voltage range (1.8V to 24V)
n Built-in current limit amplifier
n Overtemperature protection
n 12V, 5V, and 3.3V standard output voltages
n Can be programmed using external divider
n −40˚C to +125˚C junction temperature range
Applications
n High-current 5V to 3.3V regulator
n Post regulator for switching converter
n Current-limited switch
Connection Diagram
<
1 µA in shutdown
Surface Mount Mini SO-8 Package
See NS Package Number MUA08A
See Table 1 of this Document
For Order Numbers
Top View
DS100034-2
@
September 1997
V
IN
www.national.com
= 5V)