LP38511-ADJ Datasheet, PDF (2/14 Pages) National Semiconductor (TI) – 800mA Fast-Transient Response Adjustable Low-Dropout Linear Voltage Regulator

Ordering Information
Output
Voltage
ADJ
Order
Number
LP38511MR-ADJ
LP38511MRX-ADJ
LP38511TJ-ADJ
Connection Diagrams
Package
Type
PSOP-8
PSOP-8
TO-263 THIN
Package
Marking
LP38511MR-ADJ
LP38511MR-ADJ
LP38511TJ-ADJ
Supplied
As
Rail
Tape and Reel
Tape and Reel
Top View
TO-263 THIN Package
30040805
30040806
Top View
PSOP 8 Pin Package
Pin Descriptions for TO-263 THIN (TJ) Package
Pin #
1
2
3
4
5
DAP
Pin Name
EN
IN
GND
OUT
ADJ
DAP
Function
Enable. Pull high to enable the output, low to disable the output. This pin has no internal bias and
must be tied to the input voltage, or actively driven.
Input Supply Pin.
Ground
Regulated Output Voltage Pin.
The feedback to the internal Error Amplifier to set the output voltage.
The Thin TO-263 DAP is used as a thermal connection to remove heat from the device to an
external heat-sink in the form of the copper area on the printed circuit board. The DAP is physically
connected to backside of the die. The DAP is internally connected to device ground. The DAP
should be soldered to the Ground Plane copper.
Pin Descriptions for PSOP-8 (MR) Package
Pin #
1, 2
3
4
5
6
7, 8
DAP
Pin Name
OUT
ADJ
N/C
GND
EN
IN
DAP
Function
Regulated Output Voltage Pins. Pins 1 and 2 share current and must be connected together.
The feedback to the internal Error Amplifier to set the output voltage.
No internal connection
Ground
Enable. Pull high to enable the output, low to disable the output. This pin has no internal bias and
must be tied to the input voltage, or actively driven.
Input Supply Pin. Pins 7 and 8 share current and must be connected together.
The PSOP-8 DAP is used as a thermal connection to remove heat from the device to an external
heat-sink in the form of the copper area on the printed circuit board. The DAP is physically
connected to backside of the die, but is not internally connected to device ground. The DAP should
be soldered to the Ground Plane copper.
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