PT5028N_技术文档

PT5020 Series

Positive Input/Negative Output

Integrated Switching Regulator

SLTS025B

(Revised 12/19/2001)

Features

Description

• Negative Output

• Input Voltage Range:

+4.75 to +7 Volts

The PT5020 series of integrated

switching regulators (ISRs) convert a

positive input voltage, typically +5V, to a

negative output voltage for a wide range of

analog and datacom applications.

• Laser-Trimmed

• Small Footprint

• Soft Start

These Plus to Minus ISRs incorporate

a “Buck-Boost” topology and 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 5021 o = -3.3 Volts

PT 5022 o = -5 Volts

PT 5023 o = -9 Volts

PT 5024 o = -12 Volts

PT 5025 o = -15 Volts

PT 5026 o = -5.2 Volts

PT 5027 o = -8.0 Volts

PT 5028 o = -6.5 Volts

PT 5029 o = -5.5 Volts

PT 5030 o = -6.0 Volts

PT 5031 o = -1.7 Volts

1

Function

V_in

Case/Pin

O rder

Package

Configuration

Suffix

Code

*

Standard Application

Vertical

Horizontal

SMD

Horizontal, 2-pin Tab

SMD, 2-Pin Tab

N

A

C

M

L

(EAD)

2

GND

V_out

(EAA)

(EAC)

+V_in

–V_out

1

3

PT5020

2

(EAM)

(EAL)

C₂

100µF

C ₁

+

* 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= Required Electrolytic (100µF)

NOTE: PT5020 ISRs are not Short-Circuit Protected.

Specifications (Unless otherwise stated, T_a=25°C, V_in=5V, I_o=I_omax, C₂=100µF)

PT5020 SERIES

Characteristics

Symbol

Conditions

Min

Typ

Max

Units

(1)

Output Current

I_o

Over V_inrange

V_o= –1.7V to –6.5V

V_o= –9V

0.25

0.10

—

1.0

0.60

0.50

0.30

A

V_o= –12V

V_o= –15V

(2)

Input Voltage Range

V_in

Over I_orange

4.75

—

7

V

Output Voltage Tolerance

∆V_o

Over V_inRange

—

1.5

3

%V_o

(3)

T_a= -20°C to SOA limit

Line Regulation

Load Regulation

Efficiency

Reg_line

Reg_load

η

Over V_inrange

—

0.5

75

1

%V_o

%

I_omin ≤ I_o≤ I_omax

I_o=0.5 I_omax

—

5

V_oRipple (pk-pk)

Transient Response

V_r

20MHz bandwidth

2

%V_o

t_tr

25% load change

—

500

3.0

—

µSec

%V_o

V_oover/undershoot

5.0

Current Limit

Inrush Current

I_lim

—

150

—

%I_omax

(3)

I_ir

t_ir

On start up

Over I_orange

—

1.0

—

A

mSec

Switching Frequency

ƒ_s

V

o

=1.7 to 8V

0.8

1

1.2

MHz

kHz

V

o

≥8 V

500

650

800

Operating Temperature Range

Thermal Resistance

T_a

-20

—

50

+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

500

G’s

1 msec, Half Sine, mounted to a fixture

Mechanical Vibration

Suffixes N, A, & C

Suffixes L & M

—

5

—

G’s

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

20

Weight

Suffixes N, A, & C

Suffixes L & M

—

4.5

6.5

—

grams

(5)

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

(2) For applications with input voltages greater than 7 VDC, use the PT78NR100 Series.

(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

PT5020 Series

Positive Input/Negative Output

Integrated Switching Regulator

PT5024 (-12VDC) (See Note A)

PT5022 (-5VDC) (See Note A)

Efficiency vs Output Current

100

90

80

70

60

50

40

100

90

80

70

60

50

40

Vin

7.0V

6.5V

6.0V

5.5V

5.0V

4.75V

V in

7.0V

6.5V

6.0V

5.5V

5.0V

4.75V

0

0.1

0.2

0.3

0.4

0.5

0

0.2

0.4

0.6

0.8

1

Iout-(Amps)

Ripple Voltage vs Output Current

100

80

60

40

20

0

160

140

120

100

80

Vin

4.75V

5.0V

5.5V

6.0V

6.5V

7.0V

4.7 5V

5.0 V

5.5 V

6.0 V

6.5 V

7.0 V

60

40

20

0

0.2

0.4

0.6

0.8

1

0

0.1

0.2

0.3

0.4

0.5

Iout-(Amps)

Power Dissipation vs Output Current

2

1.5

1

2.5

2

Vin

4.75V

5.0V

5.5V

6.0V

6.5V

7.0V

4.75V

5.0V

5.5V

6.0V

6.5V

7.0V

1.5

1

0.5

0

0.5

0

0.1

0.2

0.3

0.4

0.5

0

0.2

0.4

0.6

0.8

1

Iout-(Amps)

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

90

80

70

60

50

40

30

20

80

70

60

50

40

30

20

Airflow

0

LFM

90 LFM

60 LFM

90 LFM

60 LFM

0

LFM

0

0.2

0.4

0.6

0.8

1

0 .0

0 .1

0 .2

0 .3

0 .4

0 .5

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

PACKAGE OPTION ADDENDUM

www.ti.com

13-Oct-2005

PACKAGING INFORMATION

Orderable Device

PT5021A

PT5021C

PT5021J

PT5021L

PT5021N

PT5022A

PT5022C

PT5022CT

PT5022H

PT5022J

PT5022L

PT5022M

PT5022N

PT5022S

PT5023A

PT5023C

PT5023N

PT5024A

PT5024C

PT5024CT

PT5024J

PT5024L

PT5024M

PT5024N

PT5024S

Status ⁽¹⁾

ACTIVE

Package Package

Pins Package Eco Plan ⁽²⁾Lead/Ball Finish MSL Peak Temp ⁽³⁾

Qty

Type

Drawing

SIP MOD

ULE

EAA

3

35

16

35

200

16

35

16

35

200

16

35

16

TBD

Call TI

Level-1-215C-UNLIM

SIP MOD

ULE

EAC

EAJ

EAL

EAD

EAA

EAC

EAH

EAJ

EAL

EAM

EAD

EAF

EAA

EAC

EAD

EAA

EAC

EAJ

EAL

EAM

EAD

EAF

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

Addendum-Page 1

PACKAGE OPTION ADDENDUM

www.ti.com

13-Oct-2005

Orderable Device

PT5025A

PT5025C

PT5025H

PT5025L

PT5025N

PT5026A

PT5026C

PT5026CT

PT5026H

PT5026J

PT5026L

PT5026LT

PT5026M

PT5026N

PT5027A

PT5027C

PT5027N

PT5028A

PT5028N

PT5029A

PT5029C

PT5029M

PT5030A

PT5030C

PT5030L

PT5030N

Status ⁽¹⁾

ACTIVE

Package Package

Pins Package Eco Plan ⁽²⁾Lead/Ball Finish MSL Peak Temp ⁽³⁾

Qty

Type

Drawing

SIP MOD

ULE

EAA

3

35

16

35

200

16

35

200

35

TBD

Call TI

Level-1-215C-UNLIM

SIP MOD

ULE

EAC

EAH

EAL

EAD

EAA

EAC

EAH

EAJ

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

EAL

EAM

EAD

EAA

EAC

EAD

EAA

EAD

EAA

EAC

EAM

EAA

EAC

EAL

EAD

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

SIP MOD

ULE

Addendum-Page 2

PACKAGE OPTION ADDENDUM

www.ti.com

13-Oct-2005

Orderable Device

PT5031C

Status ⁽¹⁾

ACTIVE

Package Package

Pins Package Eco Plan ⁽²⁾Lead/Ball Finish MSL Peak Temp ⁽³⁾

Qty

Type

Drawing

SIP MOD

ULE

EAC

3

35

TBD

Call TI

Level-1-215C-UNLIM

PT5031L

SIP MOD

ULE

EAL

EAD

PT5031N

SIP MOD

ULE

⁽¹⁾The marketing status values are defined as follows:

ACTIVE: Product device recommended for new designs.

LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.

NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in

a new design.

PREVIEW: Device has been announced but is not in production. Samples may or may not be available.

OBSOLETE: TI has discontinued the production of the device.

(2)

Eco Plan

-

The planned eco-friendly classification: Pb-Free (RoHS) or Green (RoHS

&

no Sb/Br)

-

please check

http://www.ti.com/productcontent for the latest availability information and additional product content details.

TBD: The Pb-Free/Green conversion plan has not been defined.

Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements

for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered

at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.

Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame

retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)

(3)

MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder

temperature.

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is

provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the

accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take

reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on

incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited

information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI

to Customer on an annual basis.

Addendum-Page 3

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

orders and should verify that such information is current and complete. All products are sold subject to TI’s terms

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.

TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right,

copyright, mask work right, or other TI intellectual property right relating to any combination, machine, or process

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Use of such information may require a license from a third party under the patents or other intellectual property

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Resale of TI products or services with statements different from or beyond the parameters stated by TI for that

product or service voids all express and any implied warranties for the associated TI product or service and

is an unfair and deceptive business practice. TI is not responsible or liable for any such statements.

Following are URLs where you can obtain information on other Texas Instruments products and application

solutions:

Products

Applications

Audio

Amplifiers

amplifier.ti.com

www.ti.com/audio

Data Converters

dataconverter.ti.com

Automotive

www.ti.com/automotive

DSP

dsp.ti.com

Broadband

Digital Control

Military

www.ti.com/broadband

www.ti.com/digitalcontrol

www.ti.com/military

Interface

Logic

interface.ti.com

logic.ti.com

Power Mgmt

Microcontrollers

power.ti.com

Optical Networking

Security

www.ti.com/opticalnetwork

www.ti.com/security

www.ti.com/telephony

www.ti.com/video

microcontroller.ti.com

Telephony

Video & Imaging

Wireless

www.ti.com/wireless

Mailing Address:

Texas Instruments

Post Office Box 655303 Dallas, Texas 75265


型号：	PT5028N
厂家：	TEXAS INSTRUMENTS
描述：	POSITIVE INPUT/NEGATIVE OUTPUT INTEGRATED SWITCHING REGULATOR 正输入/负输出集成开关稳压器稳压器开关输出元件输入元件
文件：	总6页 (文件大小：140K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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