For technical support and more information, see inside back cover or visit www.ti.com

Ordering Information

PT5021

o = -3.3 Volts

PT5022

o = -5 Volts

PT5023

o = -9 Volts

PT5024

o = -12 Volts

PT5025

o = -15 Volts

PT5026

o = -5.2 Volts

PT5027

o = -8.0 Volts

PT5028

o = -6.5 Volts

PT5029

o = -5.5 Volts

PT5030

o = -6.0 Volts

PT5031

o = -1.7 Volts

Pin

Function

2

GND

Standard Application

Features

+4.75 to +7 Volts

(Suffixes L & M)

Description

The PT5020 series of integrated

switching regulators (ISRs) convert a

positive input voltage, typically +5V, to a

negative output voltage for a wide range of

analog and datacom applications.

These Plus to Minus ISRs incorporate

a “Buck-Boost” topology and are packaged

in the 3-pin, single in-line pin (SIP)

package configuration.

NOTE: PT5020 ISRs are not Short-Circuit Protected.

Positive Input/Negative Output

Integrated Switching Regulator

PT5020 Series

Pin-Out Information

SLTS025B

(Revised 12/19/2001)

Case/Pin

Order

Package

Configuration

Suffix

Code *

Vertical

N

(EAD)

Horizontal

A

(EAA)

SMD

C

(EAC)

Horizontal, 2-pin Tab

M

(EAM)

SMD, 2-Pin Tab

L

(EAL)

* Previously known as package styles 100/110.

(Reference the applicable package code drawing

for the dimensions and PC board layout)

PT5020

3

2

1

C

2

100µF +

C

1

–V

out

COM

COM

+V

in

PT5020 SERIES

Characteristics

Symbol

Conditions

Min

Typ

Max

Units

Output Current

—

1.0

—0.60

A

—0.50

—0.30

Input Voltage Range

4.75

—

V

Output Voltage Tolerance

—

±1.5

±3

Line Regulation

—

±0.5

±1

Load Regulation

—

±0.5

±1

Efficiency

η

—

75

—

%

20MHz bandwidth

—

±2

±5

Transient Response

25% load change

—

500

—

µSec

—

3.0

5.0

Current Limit

—150

—

Inrush Current

On start up

—

—A

—

1.0

—

mSec

Switching Frequency

0.8

1

1.2

MHz

500

650

800

kHz

Operating Temperature Range

—

-20

—

°C

Thermal Resistance

θ

ja

Free Air Convection

—

50

—

°C/W

(40-60LFM)

Storage Temperature

-40

—

+125

°C

Mechanical Shock

Per Mil-STD-883D, Method 2002.3

—

500

—

G’s

1 msec, Half Sine, mounted to a fixture

Mechanical Vibration

Suffixes N, A, & C

—

5

—

G’s

Per Mil-STD-883D, 20-2000 Hz

Suffixes L & M

—

20

—

Weight

Suffixes N, A, & C

—

4.5

—

grams

Suffixes L & M

—

—

Notes:

(1) The ISR will operate at no load with reduced specifications.

(2) For applications with input voltages greater than 7 VDC, use the PT78NR100 Series.

(3) The inrush current stated is above the normal input current for the associated output load.

(4) See Safe Operating Area curves or consult the factory for the appropriate derating

(5) The tab pins on the 5-pin mount package types (suffixes L & M) must be soldered. For more information see the applicable package outline drawing.