PT78NR152S datasheet(1/6 Pages) TI

tên linh kiện	PT78NR152S

Giải thích chi tiết về linh kiện	1 Amp Plus to Minus Voltage Integrated Switching Regulator

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nhà sản xuất	TI [Texas Instruments]

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

PT78NR100 Series

Standard Application

C1 = Required 100µF electrolytic (1)

C2 = Required 100µF electrolytic (1)

Ordering Information

PT78NR1

Pin-Out Information

Function

1+Vin

2-Vout

3

GND

• Negative output from positive input

• Wide Input Range

• Self-Contained Inductor

• Short Circuit Protection

• Over-Temperature Protection

• Fast Transient Response

The PT78NR100 Series creates a

negative output voltage from a posi-

tive input voltage greater than 7V.

These easy-to-use, 3-terminal, Inte-

grated Switching Regulators (ISRs)

have maximum output power of 5

watts and a negative output voltage

that is laser trimmed. They also have

excellent line and load regulation.

1 Amp Plus to Minus Voltage

Integrated Switching Regulator

PT78NR100

+

-Vout

COM

Vin

1

3

2

C2

C1

+

XX

Y

Pkg Style 500

SLTS058B

(Revised 8/31/2000)

Output Voltage

03

= -3.0 Volts

05

= -5.0 Volts

52

= -5.2 Volts

06

= -6.0 Volts

07

= -7.0 Volts

08

= -8.0 Volts

09

= -9.0 Volts

10

= -10.0 Volts

12

= -12.0 Volts

14

= -13.9 Volts

15

= -15.0 Volts

Package Suffix

V

= Vertical Mount

S

= Surface Mount

H

= Horizontal

Mount

Specifications

Characteristics

PT78NR100 SERIES

(T

a= 25°C unless noted)

Symbols

Conditions

Min

Typ

Max

Units

Output Current

Io

Over Vin range

Vo=-5V

0.05 (2)

—

1.00

Vo=-6V

0.05 (2)

—0.8

Vo=-7, -8, -9V

0.05 (2)

—

0.55

A

Vo=-10V

0.05 (2)

—0.5

Vo=-12V

0.05 (2)

—

0.40

Vo=-13.9, -15V

0.05 (2)

—

0.30

Short Circuit Current

Isc

Vin=10V

—

4

×Imax

—

Apk

Inrush Current

Iir

Vin=10V

—

4

—

A

tir

On start-up

—

0.5

—

mSec

Input Voltage Range

Vin

0.1

≤ Io ≤ Imax

Vo=-5V

7

—

25

V

Vo=-6, -7, -8, -9V

7

—

21

V

Vo=-10, -12V

7

—

18

V

Vo=-13.9, -15V

7

—

15

V

Output Voltage Tolerance

∆Vo

Over Vin range

—

±1.0

±3.0

%Vo

Ta=-20°C to +70°C

Line Regulation

Regline

Over Vin range

—

±0.5

±1.0

%Vo

Load Regulation

Regload

0.1

≤ Io ≤ Imax

—

±0.5

±1.0

%Vo

Vo Ripple/Noise

Vn

Vin=10V, Io=Imax

—±2

—

%Vo

Transient Response

ttr

50% load change

—

100

250

µSec

(with 100µF output cap)

Vo over/undershoot

—

5.0

—

%Vo

Efficiency

η

Vin=10V, Io=0.5×Imax, Vo = -5V

—

75

—

%

Switching Frequency

ƒo

Over Vin and Io ranges

600

650

700

kHz

Absolute Maximum

Ta

Free Air Convection, (40-60LFM)

-40

—

+85 (3)

°C

Operating Temperaturte Range

Over Vin Range

Thermal Resistance

θ

ja

Free Air Convection, (40-60LFM)

—

45

—

°C/W

Storage Temperature

Ts

—

-40

—

+125

°C

Mechanical Shock

—

Per Mil-STD-883D, Method 2002.3

—

500

—

G’s

Mechanical Vibration

—

Per Mil-STD-883D, Method 2007.2,

—5

—

G’s

20-2000 Hz, soldered in a PC board

Weight

—

6.5

Grams

Notes:

(1) The PT78NR100 Series requires a 100µF electrolytic or tantalum capacitor at both the input and output for proper operation in all applications. The input

capacitor, C1 must have a ripple current rating ≥600 mArms, and an ESR ≤0.2Ω.

(2) The ISR will operate down to no load with reduced specifications.

(3) See Thermal Derating chart.

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