LP2950CZ-3.3 datasheet, PDF - EEWORLD Datasheet

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LP2950CZ-3.3: Description3.3V FIXED POSITIVE LDO REGULATOR, 0.45V DROPOUT, PBCY3, TO-226AA, TO-92, 3 PIN; CategoryPower/power management The power supply circuit; File Size251KB，16 Pages; ManufacturerMotorola ( NXP ); Websitehttps://www.nxp.com

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LP2950CZ-3.3 Overview

3.3V FIXED POSITIVE LDO REGULATOR, 0.45V DROPOUT, PBCY3, TO-226AA, TO-92, 3 PIN

LP2950CZ-3.3 Parametric

Parameter Name	Attribute value
Maker	Motorola ( NXP )
Parts packaging code	TO-92
package instruction	TO-92,
Contacts	3
Reach Compliance Code	unknown
ECCN code	EAR99
Maximum drop-back voltage 1	0.45 V
Maximum input voltage	30 V
Minimum input voltage	4.3 V
JESD-30 code	O-PBCY-T3
Number of functions	1
Number of terminals	3
Maximum output current 1	0.1 A
Maximum output voltage 1	3.366 V
Minimum output voltage 1	3.234 V
Nominal output voltage 1	3.3 V
Package body material	PLASTIC/EPOXY
encapsulated code	TO-92
Package shape	ROUND
Package form	CYLINDRICAL
Certification status	Not Qualified
Regulator type	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
surface mount	NO
Terminal form	THROUGH-HOLE
Terminal location	BOTTOM

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LP2950

LP2951

Micropower Voltage Regulators

The LP2950 and LP2951 are micropower voltage regulators that are

specifically designed to maintain proper regulation with an extremely low

input–to–output voltage differential. These devices feature a very low

quiescent bias current of 75

µA

and are capable of supplying output currents

in excess of 100 mA. Internal current and thermal limiting protection is

provided.

The LP2951 has three additional features. The first is the Error Output

that can be used to signal external circuitry of an out of regulation condition,

or as a microprocessor power–on reset. The second feature allows the

output voltage to be preset to 5.0 V, 3.3 V or 3.0 V output (depending on the

version) or programmed from 1.25 V to 29 V. It consists of a pinned out

resistor divider along with direct access to the Error Amplifier feedback input.

The third feature is a Shutdown input that allows a logic level signal to

turn–off or turn–on the regulator output.

Due to the low input–to–output voltage differential and bias current

specifications, these devices are ideally suited for battery powered

computer, consumer, and industrial equipment where an extension of

useful battery life is desirable. The LP2950 is available in the three pin case

29 and DPAK packages, and the LP2951 is available in the eight pin

dual–in–line, SO–8 and Micro–8 surface mount packages. The ‘A’ suffix

devices feature an initial output voltage tolerance

0.5%.

LP2950 and LP2951 Features:

MICROPOWER

LOW DROPOUT

VOLTAGE REGULATORS

Z SUFFIX

PLASTIC PACKAGE

CASE 29

(TO–226AA/TO–92)

Pin: 1. Output

2. Ground

3. Input

DT SUFFIX

PLASTIC PACKAGE

CASE 369A

(DPAK)

Pin: 1. Input

2. Ground

3. Output

•

Low Quiescent Bias Current of 75

µA

Low Input–to–Output Voltage Differential of 50 mV at 100

µA

and

380 mV at 100 mA

5.0 V, 3.3 V or 3.0 V

0.5% Allows Use as a Regulator or Reference

Extremely Tight Line and Load Regulation

Requires Only a 1.0

µF

Output Capacitor for Stability

Internal Current and Thermal Limiting

(Top View)

Heatsink surface (shown as terminal 4 in

case outline drawing) is connected to Pin 2.

D SUFFIX

PLASTIC PACKAGE

CASE 751

(SO–8)

LP2951 Additional Features:

Error Output Signals an Out of Regulation Condition

Output Programmable from 1.25 V to 29 V

Logic Level Shutdown Input

N SUFFIX

PLASTIC PACKAGE

CASE 626

DM SUFFIX

PLASTIC PACKAGE

CASE 846A

(Micro–8)

Output 1

Sense 2

Shutdown 3

Gnd 4

(See Following Page for Ordering Information.)

Motorola, Inc. 1996

(Top View)

Input

Feedback

VO Tap

Error Output

Rev 4

MOTOROLA ANALOG IC DEVICE DATA

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