PT6903N datasheet(1/7 Pages) TI1

tên linh kiện	PT6903N

Giải thích chi tiết về linh kiện	12 Watt 5V/3.3V Input Plus to Minus Voltage Converter

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nhà sản xuất	TI1 [Texas Instruments]

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

PT6900 Series

Standard Application

Ordering Information

+5V Input

+3.3V Input

Vout

PT6901

❏

❏ PT6904❑

❑

❑ = –2.0V

PT6902

❏

❏ PT6905❑

❑

❑ = –5.2V

PT6903

❑

= –1.5V

Cin = Required 330µF electrolytic

Cout = Required 330µF electrolytic

• +5V/+3.3V Input Voltage

• Negative Output

• Remote Sense

• Adjustable Output Voltage

• 23-pin SIP Package

The PT6900 is a series of high-

performance ISRs, that provide plus to

minus voltage conversion, up to 12 watt

in a 23-pin SIP package.

Pin Function

1

Do not connect

2Vout Adjust

3Vin

4Vin

5Vin

6Vin

7Vin

8

Remote Sense GND

9

GND

10

GND

11

GND

12

GND

Function

13

GND

14

GND

15

GND

16

Vout

17

Vout

18

Vout

19

Vout

20

Vout

21

Vout

22

Remote Sense Vout

23

Do not connect

Pin-Out Information

The PT6900 is designed to supply

regulated negative voltages for power-

ing the latest ECL (-5.2V) and GaAs

(-2.0V) ICs used in high-speed fiber

optic communications. A 330µF elec-

trolytic capacitor is required on the

input and output for proper operation.

Please note that this product is not

short-circuit protected.

(For dimensions and PC board layout,

see Package Styles 1100 and 1110.)

Cout

Cin

PT6900

16-21

9-15

3-7

2

V

ADJ

-V

OUT

GND

+V

IN

+

22

Remote Sense

8

PT Series Suffix (PT1234X)

Case/Pin

Configuration

Vertical Through-Hole

N

Horizontal Through-Hole

A

Horizontal Surface Mount

C

SLTS041A

(Revised 6/30/2000)

Specifications

Characteristics

PT6900 SERIES

(T

a= 25°C unless noted)

Symbols

Conditions

Min

Typ

Max

Units

Output Current

Io

Ta

= +25°C, natural convection

Vin =5.0V

Vo = –2.0V / –1.5V

0.1 (1)

—6.0 (2)

A

Vo = –5.2V

0.1 (1)

—3.5 (2)

Vin =3.3V

Vo = –2.0V

0.1 (1)

—5.0 (2)

A

Vo = –5.2V

0.1 (1)

—2.5 (2)

Input Voltage Range

0.1A

≤ Io ≤ Imax

PT6901 PT6902/PT6903

4.5

—

5.5

PT6904/PT6905

3.1

—

3.6

V

Output Voltage Tolerance

∆Vo

Nominal Vin, Io = Imax

Vo – 0.05

—

Vo+ 0.05

V

0°C

≤ Ta ≤ +60°C

Output Adjust Range

Vo

Pin 14 to Vo or GND

Vo = –2.0V

–1.4

—

–4.4

Vo = –5.2V

–2.7

—

–6.5

V

Vo = –1.5V

–1.2

—

–3.4

Line Regulation

Regline

Over Vin range, Io =Imax

—

±0.5

±1.0

%

Load Regulation

Regload

Vin =Vnom, 0.1 ≤ Io ≤ Imax

—

±0.5

±1.0

%

Vo Ripple/Noise

Vn

Vin = Vnom, Io =Imax

Vo = –1.5V / –2.0V

—

40

—

mV

Vo = –5.2V

—

50

—

Transient Response

ttr

Io step between 0.5xImax and Imax

—

200

—

µSec

with Cout = 330µF

Vos

Vo over/undershoot

—

200

—

mV

Efficiency

η

Vin =+5V, Io =0.5xImax

Vo = –1.5V

—

65

—

Vo = –2.0V

—

70

—

%

Vo = –5.2V

—

77

—

Vin = +3.3V, Io =0.5xImax

Vo = –2.0V

—

67

—

%

Vo = –5.2V

—

75

—

Switching Frequency

ƒo

Over Vin and Io ranges

500

—

600

kHz

Absolute Maximum

Ta

Over Vin Range

0

—

+85 (2)

°C

Operating Temperature Range

Storage Temperature

Ts

-40

—

+125

°C

Weight

—

Vertical/Horizontal

—

28/33

—

grams

Notes: (1) ISR-will operate down to no load with reduced specifications.

(2) See SOA curves or contact the factory for the approrpiate derating.

12 Watt 5V/3.3V Input

Plus to Minus Voltage Converter

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