A3

C3

A1

B2

C1

CBYPASS

VIN

VEN

GND

VOUT

A3

C3

A1

B2

C1

CBYPASS

VIN

VEN

GND

VOUT

Top View

Bottom View

R1

R2

Fast Turn-

on

Vref

Over Current

Thermal Prot

n.

VIN

VEN

CBYPASS

VOUT

+

-

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

VEN

Enable Input; Disables the Regulator when

≤ 0.4V.

Enables the regulator when

≥ 0.9V

B2

GND

Common Ground

C1

VOUT

Voltage output. Connect this output to the load circuit.

C3

VIN

Voltage Supply Input

A3

CBYPASS

Bypass Capacitor connection.

Connect a 0.01 µF capacitor for noise reduction.

Connection Diagram

5 Bump DSBGA Package

See Package Number YZR0005

2

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Product Folder Links: LP3999