LP2950ACZ-3.3RP datasheet, PDF

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LP2950ACZ-3.3RP: Description3.3V FIXED POSITIVE LDO REGULATOR, 0.45V DROPOUT, PBCY3, TO-226AA, TO-92, 3 PIN; CategoryPower/power management The power supply circuit; File Size261KB，22 Pages; ManufacturerON Semiconductor; Websitehttp://www.onsemi.cn

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LP2950ACZ-3.3RP Overview

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

LP2950ACZ-3.3RP Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Parts packaging code	TO-92
package instruction	,
Contacts	3
Reach Compliance Code	compliant
ECCN code	EAR99
Is Samacsys	N
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
JESD-609 code	e0
Number of functions	1
Number of terminals	3
Working temperatureTJ-Max	125 °C
Working temperature TJ-Min	-40 °C
Maximum output current 1	0.1 A
Maximum output voltage 1	3.346 V
Minimum output voltage 1	3.254 V
Nominal output voltage 1	3.3 V
Package body material	PLASTIC/EPOXY
Package shape	ROUND
Package form	CYLINDRICAL
Peak Reflow Temperature (Celsius)	225
Certification status	Not Qualified
Regulator type	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
surface mount	NO
Terminal surface	TIN LEAD
Terminal form	THROUGH-HOLE
Terminal location	BOTTOM
Maximum time at peak reflow temperature	NOT SPECIFIED
Base Number Matches	1

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LP2950, LP2951, NCV2951

100 mA, Low Power Low

Dropout Voltage Regulator

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

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, SOIC−8 and Micro8 surface mount packages.

The ‘A’ suffix devices feature an initial output voltage tolerance



0.5%.

Features

http://onsemi.com

TO−92

Z SUFFIX

CASE 29

Pin: 1. Output

2. Ground

3. Input

STRAIGHT LEAD

BULK PACK

BENT LEAD

TAPE & REEL

AMMO PACK

1 2

PIN CONNECTIONS

Pin: 1. Input

2. Ground

3. Output

DPAK

DT SUFFIX

CASE 369C

(Top View)

Heatsink surface (shown as terminal 4 in

case outline drawing) is connected to Pin 2.

SOIC−8

D SUFFIX

CASE 751

PDIP−8

N SUFFIX

CASE 626

Micro8E

DM SUFFIX

CASE 846A



Low Quiescent Bias Current of 75



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

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

Output Capacitor for Stability

Internal Current and Thermal Limiting

NCV Prefix for Automotive and Other Applications Requiring

Unique Site and Control Change Requirements; AEC−Q100

Qualified and PPAP Capable

These Devices are Pb−Free and RoHS Compliant

PIN CONNECTIONS

Output 1

Sense 2

Shutdown 3

GND 4

(Top View)

Input

Feedback

Tap

Error Output

LP2951 Additional Features



Error Output Signals an Out of Regulation Condition



Output Programmable from 1.25 V to 29 V



Logic Level Shutdown Input

(See Following Page for Device Information.)

ORDERING & MARKING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on pages 14 and 15 of this data sheet.

See general marking information in the device marking

section on page 17 of this data sheet.



Semiconductor Components Industries, LLC, 2013

April, 2013

−

Rev. 26

Publication Order Number:

LP2950/D

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