PT5047A [ETC]

Analog IC ; 模拟IC\n


型号：	PT5047A
厂家：	ETC
描述：	Analog IC 模拟IC\n 模拟IC 开关
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PT5040 Series

1-A Positive Step-up

Integrated Switching Regulator

SLTS026B

(Revised 12/19/2001)

Features

• Wide Input Voltage Range

• 85% Efficiency

• Internal Over-Temperature

Protection

• Laser-trimmed Output Voltage

• Soft Start

Description

The PT5040 is a series of 3-pin

boost-voltage Integrated Switching

Regulators (ISRs). These ISRs are

designed for use with +5V bus systems

that require an additional regulated

+8V to +20V with up to 1A of output

current. These ISRs are packaged in

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

package configuration.

• 5-Pin Mount Option

(Suffixes L & M)

Pin-Out Information Ordering Information PT Series Suffix

(PT1234x)

PT 5041o = +12 Volts

PT 5042o = +15 Volts

PT 5044o = +8 Volts

PT 5045o = +9 Volts

PT 5046o = +10 Volts

PT 5047o = +18 Volts

PT 5048o = +12.6 Volts

PT 5049o = +20 Volts

Function

V_in

Case/Pin

O rder

Package

Configuration

Suffix

Code

Standard Application

Vertical

Horizontal

SMD

Horizontal, 2-pin Tab

SMD, 2-Pin Tab

(EAD)

GND

V_out

(EAA)

(EAC)

+V_in

+V_out

PT5040

(EAM)

(EAL)

C₃

100µF

C₁

C₂

* Previously known as package styles 100/110.

COM

(Reference the applicable package code drawing

for the dimensions and PC board layout)

C₁= Optional ceramic (1-5µF)

C₂= Optional ceramic (1-5µF)

C₃= Required Electrolytic (100µF)

NOTE: Boost Topology ISRs are not Short-Circuit Protected.

Specifications (Unless otherwise stated, T_a=25°C, V_in=5V, I_o=I_omax, C₃=100µF)

PT5040 SERIES

Characteristics

Symbol

Conditions

Min

Typ

Max

Units

(1)

Output Current

I_o

Over V_inrange

PT5049

PT5047

0.1

—

0.5

0.6

1.0

0.75

1.5

1.2

—

PT5041/48

PT5042

0.1 ⁽¹⁾

(1)

0.1

(1)

PT5044

0.1

PT5045/46

0.1

–

Input Voltage Range

V_in

Over Io range

Over V_inRange

4.75

—

(V_o1)

PT5047/5049

Output Voltage Tolerance

∆V_o

(3)

T_a= -20°C to SOA derating limit

Over V_inrange

—

1.5

3.0

1.0

—

%V_o

Line Regulation

Load Regulation

Efficiency

Reg_line

Reg_load

0.5

I_omin ≤ I_o≤ I_omax

I_o=0.5A

V_oRipple (pk-pk)

Transient Response

V_r

20MHz bandwidth

%V_o

t_tr

25% load change

—

500

3.0

—

µSec

%V_o

V_os

V_oover/undershoot

5.0

(2)

(3)

Current Limit

Inrush Current

I_lim

—

150

—

%I_omax

I_ir

On start up

—

5.5

—

t_ir

—

mSec

Switching Frequency

ƒ_s

Over V_inand I_oranges

V_o<15V

V_o>15V

500

650

800

950

kHz

Operating Temperature Range

Thermal Resistance

—

-20

—

+85 ⁽⁴⁾

°C

θ_ja

Free Air Convection

(40-60LFM)

—

°C/W

Storage Temperature

Mechanical Shock

T_s

-40

—

+125

°C

Per Mil-STD-883D, Method 2002.3

1 msec, Half Sine, mounted to a fixture

—

500

—

G’s

Mechanical Vibration

Suffixes N, A, & C

Suffixes L & M

—

G’s

(5)

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

Weight

Suffixes N, A, & C

Suffixes L & M

—

4.5

6.5

—

grams

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

(2) Boost topology ISRs are not short circuit protected.

(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.

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

Typical Characteristics

PT5040 Series

1-A Positive Step-up

Integrated Switching Regulator

PT5041, +12.0 VDC

(See Note A)

PT5042, +15.0 VDC

(See Note A)

Efficiency vs Output Current

100

9 0

8 0

7 0

6 0

5 0

4 0

V in

11.0V

Vin

14.0V

12.0V

10.0V

8.0V

6.0V

5.0V

6.0V

5.0V

0.1 5

0.3

0.4 5

0.6

0.7 5

0 .2

0 .4

0 .6

0 .8

Iout-(Amps)

Ripple Voltage vs Output Current

250

200

150

100

250

200

150

100

Vin

V in

5.0V

6.0V

8.0V

11.0V

5.0V

6.0V

8.0V

10.0V

12.0V

14.0V

0.2

0.4

0.6

0.8

0.15

0.3

0.45

0.6

0.75

Iout-(Amps)

Power Dissipation vs Output Current

2.5

Vin

5.0V

6.0V

8.0V

10.0V

12.0V

14.0V

1.5

5.0V

6.0V

8.0V

11.0V

1.5

0.5

0.2

0.4

0.6

0.8

0.15

0.3

0.45

0.6

0.75

Iout-(Amps)

Safe Operating Area (V_IN=5V) (See Note B)

Airflow

0 LFM

Airflow

0 LFM

60 LFM

90 LFM

0.2

0.4

0.6

0.8

0.00

0.25

0.50

0.75

Maximum Output Current - (Amps)

Note A: Characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the Converter.

Note B: Thermal derating graphs are developed in free-air convection cooling, which corresponds to approximately 40–60LFM of airflow.

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

IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,

enhancements, improvements, and other changes to its products and services at any time and to discontinue

any product or service without notice. Customers should obtain the latest relevant information before placing

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and conditions of sale supplied at the time of order acknowledgment.

TI warrants performance of its hardware products to the specifications applicable at the time of sale in

accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI

deems necessary to support this warranty. Except where mandated by government requirements, testing of all

parameters of each product is not necessarily performed.

TI assumes no liability for applications assistance or customer product design. Customers are responsible for

their products and applications using TI components. To minimize the risks associated with customer products

and applications, customers should provide adequate design and operating safeguards.

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Mailing Address:

Texas Instruments

Post Office Box 655303

Dallas, Texas 75265

PT5047A [ETC]

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