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LP2950, LP2951

SLVS582I – APRIL 2006 – REVISED NOVEMBER 2014

LP295x Adjustable Micropower Voltage Regulators with Shutdown

1 Features

2 Applications

1

•

Wide Input Range: Up to 30 V

•

Applications with High-Voltage Input

•

Rated Output Current of 100 mA

•

Power Supplies

•

Low Dropout: 380 mV (Typ) at 100 mA

3 Description

•

Low Quiescent Current: 75

μA (Typ)

The LP2950 and LP2951 devices are bipolar, low-

•

Tight Line Regulation: 0.03% (Typ)

dropout voltage regulators that can accommodate a

•

Tight Load Regulation: 0.04% (Typ)

wide input supply-voltage range of up to 30 V. The

easy-to-use, 3-pin LP2950 is available in fixed-output

•

voltages of 5 V, 3.3 V, and 3 V. However, the 8-pin

–

1.4% at 25°C

LP2951 is able to output either a fixed or adjustable

–

2% Over Temperature

output from the same device. By tying the OUTPUT

•

Can Be Used as a Regulator or Reference

and SENSE pins together, and the FEEDBACK and

•

Stable With Low ESR (>12 m

Ω) Capacitors

3.3

V,

or

3

V

(depending

on

the

version).

•

Current- and Thermal-Limiting Features

•

LP2950 Only (3-Pin Package)

open and connecting FEEDBACK to an external

resistor divider, the output can be set to any value

–

Fixed-Output Voltages of 5 V, 3.3 V, and 3 V

between 1.235 V to 30 V.

•

LP2951 Only (8-Pin Package)

–

Fixed- or Adjustable-Output Voltages:

Device Information(1)

5 V/ADJ, 3.3 V/ADJ, and 3 V/ADJ

PART NUMBER

PACKAGE

BODY SIZE (NOM)

–

Low-Voltage Error Signal on Falling Output

LP2950

TO-92 (3)

4.83 mm x 4.83 mm

–

Shutdown Capability

SOIC (8)

4.90 mm x 3.90 mm

LP2951

–

Remote Sense Capability for Optimal Output

SON (8)

3.00 mm x 3.00 mm

Regulation and Accuracy

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Dropout Voltage vs Temperature

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.