PT78NR105ST_技术文档

PT78NR100 Series

1 Amp Plus to Minus Voltage

Integrated Switching Regulator

SLTS058B

(Revised 8/31/2000)

• 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.

Pin-Out Information

Ordering Information

Pin Function

PT 78NR1

XX Y

1

2

3

+V

in

Standard Application

-V_out

Output Voltage

Package Suffix

GND

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

V = Vertical Mount

S = Surface Mount

H = Horizontal

Mount

Vin

-Vout

COM

1

2

PT78NR100

3

+

C2

C1

COM

+

C1 = Required 100µF electrolytic ⁽¹⁾

C2 = Required 100µF electrolytic ⁽¹⁾

Pkg Style 500

Specifications

PT78NR100 SERIES

Typ Max

Characteristics

(T = 25°C unless noted)

a

Symbols

Conditions

Min

Units

Output Current

I_o

Over V_inrange V_o=-5V

V_o=-6V

0.05 ⁽²⁾

—

1.00

0.8

(2)

0.05

(2)

V_o=-7, -8, -9V

0.05

0.55

0.5

A

V_o=-10V

0.05 ⁽²⁾

(2)

V_o=-12V

0.05

0.40

0.30

(2)

V_o=-13.9, -15V

0.05

Short Circuit Current

Inrush Current

I_sc

V_in=10V

—

4×I_max

—

Apk

I_ir

t_ir

V_in=10V

—

4

—

A

On start-up

0.5

mSec

Input Voltage Range

V_in

0.1 ≤ I_o≤ I_max

V_o=-5V

7

—

25

21

18

15

V

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

V_o=-10, -12V

V_o=-13.9, -15V

Output Voltage Tolerance

∆V_o

Over V_inrange

—

±1.0

±3.0

%V^o

T_a=-20°C to +70°C

Over V_inrange

0.1 ≤ I_o≤ I_max

Line Regulation

Load Regulation

V_oRipple/Noise

Reg_line

Reg_load

V_n

—

±0.5

±2

±1.0

—

%V_o

V_in=10V, I_o=I_max

Transient Response

(with 100µF output cap)

t_tr

50% load change

V_oover/undershoot

—

100

5.0

250

—

µSec

%V_o

Efficiency

η

V_in=10V, I_o=0.5×I_max,V_o= -5V

—

75

—

%

Switching Frequency

ƒ_o

T_a

Over V_inand I_oranges

600

650

700

kHz

Absolute Maximum

Operating Temperaturte Range

Free Air Convection, (40-60LFM)

Over V_inRange

-40

—

+85 ⁽³⁾

°C

Thermal Resistance

Storage Temperature

Mechanical Shock

θ_ja

T_s

—

Free Air Convection, (40-60LFM)

—

45

—

°C/W

°C

-40

—

+125

—

Per Mil-STD-883D, Method 2002.3

500

G’s

Mechanical Vibration

Per Mil-STD-883D, Method 2007.2,

20-2000 Hz, soldered in a PC board

—

5

G’s

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, C₁must 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.

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

Typical Characteristics

PT78NR100 Series

1 Amp Plus to Minus Voltage

Integrated Switching Regulator

PT78NR105 -5.0 VDC (See Note A)

PT78NR109 -9.0 VDC (See Note A)

PT78NR112 -12.0 VDC (See Note A)

Efficiency vs Output Current

100

90

100

90

80

70

60

50

40

90

Vin

V_IN

80

Vin

7.0V

12.0V

15.0V

20.0V

25.0V

7.0V

9.0V

7.0V

70

60

50

40

70

12.0V

15.0V

18.0V

12.0V

15.0V

18.0V

21.0V

60

50

40

0

0.2

0.4

0.6

0.8

1

0

0.1

0.2

0.3

0.4

0.5

0

0.1

0.2

0.3

0.4

Iout-(Amps)

Ripple vs Output Current

200

160

120

80

200

160

120

80

250

200

150

100

50

Vin

21.0V

V_IN

25.0V

18.0V

15.0V

12.0V

9.0V

20.0V

15.0V

12.0V

7.0V

18.0V

15.0V

12.0V

7.0V

40

0

0.2

0.4

0.6

0.8

1

0

0.1

0.2

0.3

0.4

0

0.1

0.2

0.3

0.4

0.5

Iout-(Amps)

Thermal Derating (T ) (See Note B)

a

0.4

0.35

0.3

1

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

0.6

0.5

0.4

0.3

0.2

0.1

0

60°C

70°C

85°C

0.25

0.2

85°C

0.15

0.1

0.05

0

7

10

13

16

19

22

25

7

11

15

19

7

10

13

16

19

Vin-(Volts)

Power Dissipation vs Output Current

1.6

1.4

1.2

1

2

1.8

1.6

1.4

1.2

1

1.6

1.4

1.2

1

Vin

21.0V

V_IN

25.0V

18.0V

15.0V

12.0V

9.0V

20.0V

15.0V

12.0V

7.0V

18.0V

15.0V

12.0V

7.0V

0.8

0.6

0.4

0.2

0

0.8

0.6

0.4

0.2

0

0.8

0.6

0.4

0.2

0

7.0V

0

0.1

0.2

0.3

0.4

0.5

0

0.2

0.4

0.6

0.8

1

0

0.1

0.2

0.3

0.4

Iout-(Amps)

Note A: All data listed in the above graphs, except for derating data, has been developed from actual products tested at 25°C. This data is considered typical data for the ISR.

Note B: Thermal derating graphs are developed in free air convection cooling of 40-60 LFM. (See Thermal Application Notes.)

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

PACKAGE OPTION ADDENDUM

www.ti.com

13-May-2005

PACKAGING INFORMATION

Orderable Device

PT78NR103H

PT78NR103S

PT78NR103ST

PT78NR103V

PT78NR105H

PT78NR105S

PT78NR105ST

PT78NR105V

PT78NR106H

PT78NR106S

PT78NR106ST

PT78NR106V

PT78NR107H

PT78NR107S

PT78NR107ST

PT78NR107V

PT78NR108H

PT78NR108S

PT78NR108ST

PT78NR108V

PT78NR109H

PT78NR109S

PT78NR109ST

PT78NR109V

PT78NR110H

Status ⁽¹⁾

ACTIVE

Package Package

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

Qty

Type

Drawing

SIP MOD

ULE

EFA

3

25

TBD

Call TI

Level-1-215C-UNLIM

SIP MOD

ULE

EFC

EFD

EFA

EFC

EFD

EFA

EFC

EFD

EFA

EFC

EFD

EFA

EFC

EFD

EFA

EFC

EFD

EFA

25

SIP MOD

ULE

200

25

SIP MOD

ULE

SIP MOD

ULE

25

SIP MOD

ULE

25

SIP MOD

ULE

200

25

SIP MOD

ULE

SIP MOD

ULE

25

SIP MOD

ULE

25

SIP MOD

ULE

200

25

SIP MOD

ULE

SIP MOD

ULE

25

SIP MOD

ULE

25

SIP MOD

ULE

200

25

SIP MOD

ULE

SIP MOD

ULE

25

SIP MOD

ULE

25

SIP MOD

ULE

200

25

SIP MOD

ULE

SIP MOD

ULE

25

SIP MOD

ULE

25

SIP MOD

ULE

200

25

SIP MOD

ULE

SIP MOD

ULE

25

Addendum-Page 1

PACKAGE OPTION ADDENDUM

www.ti.com

13-May-2005

Orderable Device

PT78NR110S

PT78NR110ST

PT78NR110V

PT78NR112H

PT78NR112S

PT78NR112ST

PT78NR112V

PT78NR114H

PT78NR114S

PT78NR114ST

PT78NR114V

PT78NR115H

PT78NR115S

PT78NR115ST

PT78NR115V

PT78NR152H

PT78NR152S

PT78NR152ST

PT78NR152V

Status ⁽¹⁾

ACTIVE

Package Package

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

Qty

Type

Drawing

SIP MOD

ULE

EFC

3

25

200

25

TBD

Call TI

Level-1-215C-UNLIM

SIP MOD

ULE

EFC

EFD

EFA

EFC

EFD

EFA

EFC

EFD

EFA

EFC

EFD

EFA

EFC

EFD

SIP MOD

ULE

SIP MOD

ULE

25

SIP MOD

ULE

25

SIP MOD

ULE

200

25

SIP MOD

ULE

SIP MOD

ULE

25

SIP MOD

ULE

25

SIP MOD

ULE

200

25

SIP MOD

ULE

SIP MOD

ULE

25

SIP MOD

ULE

25

SIP MOD

ULE

200

25

SIP MOD

ULE

SIP MOD

ULE

25

SIP MOD

ULE

25

SIP MOD

ULE

200

25

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

Addendum-Page 2

PACKAGE OPTION ADDENDUM

www.ti.com

13-May-2005

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

in which TI products or services are used. Information published by TI regarding third-party products or services

does not constitute a license from TI to use such products or services or a warranty or endorsement thereof.

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

of the third party, or a license from TI under the patents or other intellectual property of TI.

Reproduction of information in TI data books or data sheets is permissible only if reproduction is without

alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction

of this information with alteration is an unfair and deceptive business practice. TI is not responsible or liable for

such altered documentation.

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：	PT78NR105ST
厂家：	TEXAS INSTRUMENTS
描述：	1 Amp Plus to Minus Voltage Integrated Switching Regulator 1安培正至负电压集成开关稳压器稳压器开关
文件：	总6页 (文件大小：201K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

PT78NR105ST [TI]

相关型号：

PT78NR105V

PT78NR106

PT78NR106H

PT78NR106S

PT78NR106ST

PT78NR106V

PT78NR107

PT78NR107H

PT78NR107S

PT78NR107ST

PT78NR107V

PT78NR108