LM7915CT/NOPB National Semiconductor, LM7915CT/NOPB Datasheet

LM7915CT/NOPB

Manufacturer Part Number

LM7915CT/NOPB

Description

IC VOLT REG NEG 15V 1.5A TO220-3

Manufacturer

National Semiconductor

Type

Voltage Regulatorr

Datasheets

1.LM7915CTNOPB.pdf (9 pages)

2.LM7915CTNOPB.pdf (4 pages)

Specifications of LM7915CT/NOPB

Regulator Topology

Negative Fixed

Voltage - Output

-15V

Voltage - Input

-23 ~ -35 V

Voltage - Dropout (typical)

1.1V @ 1A

Number Of Regulators

Current - Output

1.5A

Operating Temperature

0°C ~ 125°C

Mounting Type

Through Hole

Package / Case

TO-220-3 (Straight Leads)

Current, Output

1.5 A

Current, Supply

1.5 mA

Package Type

TO-220

Regulation, Line

5 mV

Regulation, Load

15 mV

Regulator Type

Negative Voltage Out

Resistance, Thermal, Junction To Case

3 °C/W

Temperature, Operating, Range

0 to +125 °C

Voltage, Dropout

1.1 V

Voltage, Input

-35 V

Voltage, Noise

375 μV

Voltage, Output

-15 V

Voltage, Supply, Rejection Ratio

70 dB

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Current - Limit (min)

Lead Free Status / Rohs Status

RoHS Compliant part Electrostatic Device

Other names

*LM7915CT
*LM7915CT/NOPB
LM7915
LM7915CT
UA7915
UA7915CT
UA7915CU

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Allchip Electronic(HK) Limited

Part Number:

LM7915CT/NOPB

Manufacturer:

NSTI

Quantity:

17 634

Current page: 1 of 9
Download datasheet (155Kb)

LM79XX Series

3-Terminal Negative Regulators

General Description

The LM79XX series of 3-terminal regulators is available with

fixed output voltages of −5V, −12V, and −15V. These devices

need only one external component — a compensation ca-

pacitor at the output. The LM79XX series is packaged in the

TO-220 power package and is capable of supplying 1.5A of

output current.

These regulators employ internal current limiting safe area

protection and thermal shutdown for protection against vir-

tually all overload conditions.

Low ground pin current of the LM79XX series allows output

voltage to be easily boosted above the preset value with a

Connection Diagrams

Order Number LM7905CT, LM7912CT or LM7915CT

See NS Package Number TO3B

TO-220 Package

Front View

DS007340

DS007340-14

resistor divider. The low quiescent current drain of these

devices with a specified maximum change with line and load

ensures good regulation in the voltage boosted mode.

For applications requiring other voltages, see LM137

datasheet.

Features

n Thermal, short circuit and safe area protection

n High ripple rejection

n 1.5A output current

n 4% tolerance on preset output voltage

Typical Applications

more than 3". For value given, capacitor must be solid

tantalum. 25µF aluminum electrolytic may be substituted.

†

solid tantalum. 25µF aluminum electrolytic may be substi-

tuted. Values given may be increased without limit.

For output capacitance in excess of 100µF, a high current

diode from input to output (1N4001, etc.) will protect the

regulator from momentary input shorts.

Required if regulator is separated from filter capacitor by

Required for stability. For value given, capacitor must be

Fixed Regulator

DS007340-3

September 2001

www.national.com

Related parts for LM7915CT/NOPB

LM7915CT/NOPB Summary of contents

Page 1

... TO-220 Package Front View Order Number LM7905CT, LM7912CT or LM7915CT See NS Package Number TO3B © 2001 National Semiconductor Corporation resistor divider. The low quiescent current drain of these devices with a specified maximum change with line and load ensures good regulation in the voltage boosted mode. ...

Page 2

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Input Voltage (V = −5V −12V and −15V) o Electrical Characteristics Conditions unless otherwise noted: I Part Number Output Voltage Input Voltage (unless otherwise specified) ...

Page 3

Electrical Characteristics Conditions unless otherwise noted: I OUT Part Number Output Voltage Input Voltage (unless otherwise specified) Symbol Parameter I Quiescent Current Q I Quiescent Current Q Change V Output Noise Voltage n Ripple Rejection Dropout Voltage I Peak Output ...

Page 4

Typical Applications Bypass capacitors are necessary for stable operation of the LM79XX series of regulators over the input voltage and output current ranges. Output bypass capacitors will improve the transient response by the regulator. The bypass capacitors, (2.2µF on the ...

Page 5

Typical Applications (Continued) * Lamp brightness increase until mA) + 5V/R1 † Necessary only if raw supply filter capacitor is more that 2" from LM7905CT * Lamp brightness increases until i = 5V/R1 ...

Page 6

Typical Applications (Continued) Load Regulation Output Ripple 3000µ Temperature Stability Output Noise 10Hz f 10kHz *Resistor tolerance of R4 and R5 determine matching of (+) and (−) outputs. ...

Page 7

Schematic Diagrams 7 www.national.com ...

Page 8

Schematic Diagrams www.national.com (Continued) 8 ...

Page 9

... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...

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