(800) 531-5782

Fax: (630) 393-6902 http://www.ti.com/powertrends

4

Standard Application

Ordering Information

PT6121! = +5 Volts

PT6122! = +3.3 Volts

Case/Pin

Configuration

Vertical Through-Hole

N

Horizontal Through-Hole

A

Horizontal Surface Mount

C

Pin-Out Information

PT6120

Series

The PT6120 series is a low volt-

age input (typically 7V) version of

Power Trends’ high-performance

1A, 12 pin SIP Integrated Switching

Regulators (ISRs). These ISRs are de-

signed with premium low threshold FETs

for those applications requiring very low

input/output voltage differentials such as

battery powered equipment. This high-

performance ISR family offers a unique

combination of features combining 89%

typical efficiency with open-collector on/

off control and adjustable output voltage.

Quiescent current in the shutdown mode

is less than 100µA.

1 AMP ADJUSTABLE LOW VOLTAGE INPUT

INTEGRATED SWITCHING REGULATOR

Pin

Function

1

Inhibit

(30V max)

5

GND

6

GND

7

GND

8

GND

10

11

12

PT6120

2,3,4

5,6,7,8

9,10,11

12

V

IN

GND

GND

V

OUT

C2

+

1

V

INH

Q1

C1

Specifications

Characteristics

PT6120 SERIES

(T

°C unless noted)

Symbols

Conditions

Min

Typ

Max

Units

Output Current

0.1*

—

1.0

A

Short Circuit Current

—

3.5

—

Apk

Input Voltage Range

0.1

7

—

26

V

7

—

30/38**

V

Output Voltage Tolerance

—

±1.0

±2.0

Line Regulation

—

±0.25

±0.5

Load Regulation

0.1

—

±0.25

±0.5

—

±2

—

Transient Response

50% load change

—

100

200

µSec

—

5.0

—

Efficiency

η

—

84

—

%

—

89

—

%

Switching Frequency

400

500

600

kHz

Shutdown Current

—

100

—

µA

Quiescent Current

—

10

—

mA

Output Voltage

See Application Notes.

Adjustment Range

Absolute Maximum

-40

—

+85

°C

Operating Temperature Range

Recommended Operating

-40

—

+85***

°C

Temperature Range

(40-60LFM)

-40

—

+85***

Thermal Resistance

θ

ja

Free Air Convection

—

50

—

°C/W

(40-60LFM)

—

40

—

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

Per Mil-STD-883D, Method 2007.2

—10

—

G’s

20-2000 Hz, Soldered in a PC board

Weight

—

5.0

—

grams

* ISR will operate down to no load with reduced specifications.

** Input voltage cannot exceed 30V when the inhibit function is used.

***See Thermal Derating chart.

Note: The PT6120 Series requires a 100µF electrolytic or tantalum output capacitor for proper operation in all applications.

Pkg Style 200

PT6120

SLTS081

(Revised 6/4/98)