VI

GND

GND

VO

R

#

SET

0.05W,1%

(Required)

C *

I

100 F

m

Electrolytic

(Required)

C *

O

100 F

m

Electrolytic

(Optional)

Inhibit

3

PTH08080W

STANDARD APPLICATION

(TopView)

1

2

5

4

*SeeTheCapacitor ApplicationInformation

#SeetheSpecificationTablefortheR

value.

SET

$DiodeisRequiredWhenV

5.25VandV

16V.

O

I

>

>

+

D1$

PTH08080W

www.ti.com

SLTS235D – FEBRUARY 2005 – REVISED SEPTEMBER 2013

2.25-A, WIDE-INPUT ADJUSTABLE SWITCHING REGULATOR

Check for Samples: PTH08080W

1

FEATURES

DESCRIPTION

The PTH08080W is a highly integrated, low-cost

•

Up to 2.25-A Output Current at 85°C

switching regulator module that delivers up to 2.25 A

•

4.5-V to 18-V Input Voltage Range

of output current. The PTH08080W sources output

•

Wide-Output Voltage Adjust

current at a much higher efficiency than a TO-220

(0.9 V to 5.5 V)

linear regulator IC, thereby eliminating the need for a

heat sink. Its small size (0.5 × 0.6 in) and flexible

•

Efficiencies Up To 93%

operation creates value for a variety of applications.

•

On/Off Inhibit

The input voltage range of the PTH08080W is from

•

Undervoltage Lockout (UVLO)

4.5 V to 18 V, allowing operation from either a 5-V or

•

Output Overcurrent Protection

12-V input bus. Using state-of-the-art switched-mode

(Nonlatching, Auto-Reset)

power-conversion technology, the PTH08080W can

step down to voltages as low as 0.9 V from a 5-V

•

Overtemperature Protection

input bus, with less than 1 W of power dissipation.

•

Ambient Temperature Range: –40°C to 85°C

The output voltage can be adjusted to any voltage

•

Surface-Mount Package

over the range, 0.9 V to 5.5 V, using a single external

•

Safety Agency Approvals:

resistor. Operating features include an undervoltage

lockout (UVLO), on/off inhibit, overcurrent protection,

UL/CUL 60950, EN60950

and overtemperature protection. Target applications

include telecommunications, test and measurement

APPLICATIONS

applications, and high-end consumer products. This

•

Telecommunications, Instumentation,

product is available in both through-hole and surface-

and General-Purpose Circuits

mount package options, including tape and reel.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2005–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.