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产品型号NCV8450ASTT3G的概述

NCV8450ASTT3G芯片概述 NCV8450ASTT3G是一款高效的线性调节器，其主要应用于电源管理、汽车电子及其他需要稳定电压输出的场合。作为一款低压差（LDO）线性调节器，它采用了先进的电源管理技术，能够提供高达1A的输出电流，确保了高度的稳定性和可靠性，适应了现代电子设备日益增长的功率需求。这款芯片特别设计用于满足汽车环境中的严格要求，具有宽工作温度范围和耐用性。其低待机电流特性使得它在动力受限的应用场景中表现出优异的性能。NCV8450ASTT3G还具有过流保护、过热保护等特性，这使得其在功能上更加全面并适应不同的工作条件。详细参数 NCV8450ASTT3G的主要参数如下： - 输入电压范围：4.5V 至 40V - 输出电压范围：可调（通过外部电阻设定），输出电压精度±2% - 最大输出电流：1.0A - 待机电流：50μA - 温度范围：-40℃至 +125℃ ...

产品型号NCV8450ASTT3G的Datasheet PDF文件预览

NCV8450, NCV8450A

Self-Protected High Side

Driver with Temperature

and Current Limit

The NCV8450/A is a fully protected High−Side Smart Discrete

device with a typical R

0.8 A typical. The device can switch a wide variety of resistive,

inductive, and capacitive loads.

of 1.0 W and an internal current limit of

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MARKING

DS(on)

DIAGRAM

Features

• Short Circuit Protection

AYW

XXXXXG

• Thermal Shutdown with Automatic Restart

• Overvoltage Protection

SOT−223

(TO−261)

CASE 318E

• Integrated Clamp for Inductive Switching

• Loss of Ground Protection

• ESD Protection

• Slew Rate Control for Low EMI

• Very Low Standby Current

• NCV Prefix for Automotive and Other Applications Requiring

Unique Site and Control Change Requirements; AEC−Q100

Qualified and PPAP Capable

XXXXX = V8450 or 8450A

= Assembly Location

= Year

= Work Week

= Pb−Free Package

(Note: Microdot may be in either location)

• This is a Pb−Free Device

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 8 of this data sheet.

Typical Applications

• Automotive

• Industrial

PRODUCT SUMMARY

Symbol

Characteristics

Overvoltage Protection

Operation Voltage

Value

Unit

IN_CL

D(on)

4.5 − 45

1.0

On−State Resistance

Publication Order Number:

April, 2012 − Rev. 3

NCV8450/D

NCV8450, NCV8450A

(Pins 2, 4)

Regulated

Charge Pump

Output

Clamping

Control

Logic

(Pin 1)

OUT

(Pin 3)

R_IN

Current

Limitation

Overtemperature

Detection

Figure 1. Block Diagram

PACKAGE PIN DESCRIPTION

Pin #

Symbol

Description

Control Input, Active Low

Supply Voltage

Output

OUT

Supply Voltage

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NCV8450, NCV8450A

MAXIMUM RATINGS

Value

Min

Max

Rating

Symbol

Unit

DC Supply Voltage (Note 1)

Load Dump Protection

−16

100

Loaddump

(RI = 2 W, t = 400 ms, V = 0, 10 V, I = 150 mA, V = 13.5 V)

Input Current

−15

Output Current (Note 1)

Total Power Dissipation

Internally Limited

out

@ T = 25°C (Note 2)

@ T = 25°C (Note 3)

1.13

1.60

Electrostatic Discharge (Note 4)

(Human Body Model (HBM) 100 pF/1500 W)

Input

All other

Single Pulse Inductive Load Switching Energy (Note 4)

(V = 13.5 V, I = 465 mApk, L = 200 mH, T

= 150°C)

JStart

Operating Junction Temperature

Storage Temperature

−40

−55

+150

°C

storage

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the

Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect

device reliability.

1. Reverse Output current has to be limited by the load to stay within absolute maximum ratings and thermal performance.

2. Minimum Pad.

3. 1 in square pad size, FR−4, 1 oz Cu.

4. Not subjected to production testing.

THERMAL RESISTANCE RATINGS

Parameter

Symbol

Max Value

Unit

Thermal Resistance (Note 5)

K/W

Junction−to−Ambient (Note 2)

Junction−to−Ambient (Note 3)

110

78.3

5. Not subjected to production testing.

−

OUT

NCV8450/A

Figure 2. Applications Test Circuit

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NCV8450, NCV8450A

ELECTRICAL CHARACTERISTICS (6 v V v 45 V; −40°C <T < 150°C unless otherwise specified)

Value

Typ

Min

Max

Rating

Symbol

Conditions

Unit

OUTPUT CHARACTERISTICS

Operating Supply Voltage

4.5

−

SUPPLY

On Resistance

T = 25°C , I

= 150 mA, V = 7 V − 45 V

1.0

1.4

OUT

(Pin 1 Connected to GND)

T = 150°C, I

= 150 mA, V = 7 V − 45 V

(Note 6)

T = 25°C , I

= 150 mA, V = 6 V

1.1

0.6

2.1

OUT

Standby Current (Pin 1 Open)

v 20 V

> 20 V

100

INPUT CHARACTERISTICS

Input Current – Off State

OUT

v 0.1 V, R = 270 W, T = 25°C

−50

−40

IN_OFF

OUT

v 0.1V, R = 270 W, T = 150°C (Note 6)

L J

Input Current – On State

(Pin 1 Grounded)

1.5

IN_ON

Input Resistance (Note 6)

SWITCHING CHARACTERISTICS

Turn−On Time (Note 7)

125

100

R = 270 W (Note 6)

(V = V to 0 V) to 90% V

OUT

= 13.5 V, R = 270 W, T = 25°C

L J

Turn−Off Time (Note 7)

(V = 0 V to V ) to 10% V

OUT

R = 270 W (Note 6)

175

150

OFF

= 13.5 V, R = 270 W, T = 25°C

Slew Rate On (Note 7)

dV/dt

V/ms

R = 270 W (Note 6)

(V = V to 0V) 10% to 30%

0.7

OUT

= 13.5 V, R = 270 W, T = 25°C

L J

Slew Rate Off (Note 7)

dV/dt

R = 270 W (Note 6)

V/ms

OFF

(V = 0 V to V ) 70% to 40%

0.9

0.6

= 13.5 V, R = 270 W, T = 25°C

OUT

OUTPUT DIODE CHARACTERISTICS (Note 6)

Drain−Source Diode Voltage

= −0.2 A

OUT

Continuous Reverse Drain

Current

T = 25°C

0.2

−

PROTECTION FUNCTIONS (Note 8)

Temperature Shutdown (Note 6)

150

175

°C

SD_HYST

Temperature Shutdown

Hysteresis (Note 6)

Output Current Limit

T = −40°C, V = 13.5 V, t = 100 ms (Note 6)

1.5

LIM

0.8

T = 25 °C, V = 13.5 V, t = 100 ms

0.5

T = 150 °C , V = 13.5 V, t = 100 ms (Note 6)

Output Clamp Voltage

= 4 mA

CLAMP

OUT

(Inductive Load Switch Off)

At V

= V − V

OUT

D CLAMP

Overvoltage Protection

IN_CL

= 4 mA

CLAMP

6. Not subjected to production testing

7. Only valid with high input slew rates

8. Protection functions are not designed for continuous repetitive operation and are considered outside normal operating range

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NCV8450, NCV8450A

TYPICAL CHARACTERISTIC CURVES

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

1.0

= 150 mA

out

0.95

= 6 V

0.9

0.85

0.8

= 6 V

= 9 V

= 15 V

0.75

0.7

0.65

0.6

T = 25°C

0.1

0.2

0.3

0.4

0.5

−40 −20

80 100 120 140

TEMPERATURE (°C)

OUTPUT LOAD (A)

Figure 3. R_DS(on)vs. Temperature

Figure 4. R_DS(on)vs. Output Load

5.0

= 270 W

LOAD

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

= 42 V

125°C

25°C

150°C

= 13.5 V

−40°C

= 9 V

−40 −20

80 100 120 140

(V)

TEMPERATURE (°C)

Figure 5. R_DS(on)vs. V_D

Figure 6. Turn On Time vs. Temperature

1.2

1.0

0.8

0.6

0.4

0.2

140

120

100

= 270 W

LOAD

= 42 V

= 13.5 V

= 9 V

−40 −20

80 100 120 140

−40 −20

80 100 120 140

TEMPERATURE (°C)

Figure 8. Slew Rate (ON) vs. Temperature

Figure 7. Turn Off Time vs. Temperature

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NCV8450, NCV8450A

TYPICAL CHARACTERISTIC CURVES

1.2

1.4

= 13.5 V

1.2

= 42 V

0.8

0.6

0.4

0.2

= 9 V

0.8

0.6

0.4

0.2

= 13.5 V

= 270 W

LOAD

−40 −20

80 100 120 140

−40 −20

80 100 120 140

TEMPERATURE (°C)

Figure 9. Slew Rate (OFF) vs. Temperature

Figure 10. Current Limit vs. Temperature

1.4

1.2

1.0

0.8

0.6

0.4

0.2

= 45 V

T = −40°C

25°C

125°C

150°C

= 25 V

= 15 V

−40 −20

80 100 120 140

TEMPERATURE (°C)

V , VOLTAGE (V)

Figure 12. V_DLeakage Current vs.

Figure 11. Peak Short Circuit Current vs. V_D

Voltage

Temperature Off−State

2.5

2.0

1.5

1.0

0.5

= 45 V

= 28 V

125°C

−40°C

= 15 V

150°C

25°C

= 6 V

−40 −20

80 100 120 140

TEMPERATURE (°C)

V , VOLTAGE (V)

Figure 14. On−State Input Current vs.

Figure 13. V_DLeakage Current vs. V_DVoltage

Temperature

Off−State

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NCV8450, NCV8450A

TYPICAL CHARACTERISTIC CURVES

= 100 W

out

150°C

8.0

6.0

4.0

2.0

125°C

25°C

−40°C

= 100 kW

OUT

= 0 V

V , VOLTAGE (V)

Figure 15. Output Voltage vs. V_DVoltage

Figure 18. Input Current vs. V_DVoltage

Off−State

900

800

700

600

500

400

300

200

100

150°C

125°C

−40°C

25°C

T = 150°C

= 20 V

10 15 20 25 30 35 40 45 50 55 60 65

100

150

V , VOLTAGE (V)

LOAD INDUCTANCE (mH)

Figure 16. Input Current vs. V_DVoltage

Figure 17. Single Pulse Maximum Switch−off

On−State

Current vs. Load Inductance

1000

= 13.5 V

100

= 24 V

= 42 V

−40 −20

80 100 120 140

TEMPERATURE (°C)

Figure 19. Initial Short−Circuit Shutdown Time

vs. Temperature

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NCV8450, NCV8450A

TYPICAL CHARACTERISTIC CURVES

140

120

100

PCB Cu thickness, 1.0 oz

PCB Cu thickness, 2.0 oz

100

200

300

400

500

600

700

COPPER HEAT SPREADER AREA (mm )

Figure 20. R_q_JAvs. Copper Area

1000

Duty Cycle = 0.5

0.2

100

0.1

0.05

0.02

0.01

Single Pulse

0.1

0.01

0.001

Psi TSP−A(t)

1E−06

1E−05

1E−04

1E−03

1E−02

1E−01

1E+00

1E+01

1E+02

1E+03

PULSE TIME (s)

Figure 21. Transient Thermal Response

ISO PULSE TEST RESULTS

Test Pulse

Test Level

200 V

Test Results

Pulse Cycle Time and Generator Impedance

500 ms, 10 W

100 ms, 50 W

400 ms, 2 W

150 V

200 V

175 V

E(100 V)

ORDERING INFORMATION

Device

†

Package

Shipping

NCV8450STT3G

SOT−223

(Pb−Free)

4000 / Tape & Reel

NCV8450ASTT3G

SOT−223

(Pb−Free)

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.

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NCV8450, NCV8450A

PACKAGE DIMENSIONS

SOT−223 (TO−261)

CASE 318E−04

ISSUE M

NOTES:

1. DIMENSIONING AND TOLERANCING PER ANSI

Y14.5M, 1982.

2. CONTROLLING DIMENSION: INCH.

MILLIMETERS

INCHES

NOM

0.064

0.002

0.030

0.121

0.012

0.256

0.138

0.091

0.037

0.069

0.276

−

DIM

MIN

1.50

0.02

0.60

2.90

0.24

6.30

3.30

2.20

0.85

1.50

6.70

0°

NOM

1.63

0.06

0.75

3.06

0.29

6.50

3.50

2.30

0.94

1.75

7.00

−

MAX

1.75

0.10

0.89

3.20

0.35

6.70

3.70

2.40

1.05

2.00

7.30

10°

MIN

0.060

0.001

0.024

0.115

0.009

0.249

0.130

0.087

0.033

0.060

0.264

0°

MAX

0.068

0.004

0.035

0.126

0.014

0.263

0.145

0.094

0.041

0.078

0.287

10°

0.08 (0003)

SOLDERING FOOTPRINT*

3.8

0.15

2.0

0.079

6.3

0.248

2.3

0.091

2.3

0.091

2.0

0.079

inches

1.5

0.059

SCALE 6:1

*For additional information on our Pb−Free strategy and soldering

details, please download the ON Semiconductor Soldering and

Mounting Techniques Reference Manual, SOLDERRM/D.

ON Semiconductor and

are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice

to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability

arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.

“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All

operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights

nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications

intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should

Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,

and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death

associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal

Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.

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