Datasheet

A3 C3
A1 B2 C1
C
BYPASS
V
IN
V
EN
GND
V
OUT
A3C3
A1B2C1
C
BYPASS
V
IN
V
EN
GND
V
OUT
Top View Bottom View
R
1
R
2
Fast Turn-
on
Vref
Over Current
Thermal Prot
n
.
V
IN
V
EN
C
BYPASS
V
OUT
+
-
GND
LP3999
SNVS207E –JUNE 2003–REVISED MAY 2013 www.ti.com
DESCRIPTION (CONTINUED)
The LP3999 is designed to be stable with small 1.0 µF ceramic capacitors. The small outline of the LP3999
DSBGA package with the required ceramic capacitors can realize a system application within minimal board
area.
Performance is specified for a −40°C to +125°C temperature range.
The device is available in DSBGA package. For other package options contact your local TI sales office.
The device is available in fixed output voltages in the ranges of 1.5V to 3.3V. For availability, please contact your
local TI sales office.
Block Diagram
PIN DESCRIPTIONS
Pin No. Symbol Name and Function
A1 V
EN
Enable Input; Disables the Regulator when ≤ 0.4V.
Enables the regulator when ≥ 0.9V
B2 GND Common Ground
C1 V
OUT
Voltage output. Connect this output to the load circuit.
C3 V
IN
Voltage Supply Input
A3 C
BYPASS
Bypass Capacitor connection.
Connect a 0.01 µF capacitor for noise reduction.
Connection Diagram
5 Bump DSBGA Package
See Package Number YZR0005
2 Submit Documentation Feedback Copyright © 2003–2013, Texas Instruments Incorporated
Product Folder Links: LP3999