ON Semiconductor NCV8141 Technical data

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NCV8141

5.0 V, 500 mA Linear Regulator with ENABLE, RESET

, and Watchdog

The NCV8141 is a linear regulator suited for microprocessor

applications in automotive environments.

This ON Semiconductor part provides the power for the microprocessors along with many of the control functions needed in today’s computer based systems. Incorporating all of these features saves both cost, and board space.

The NCV8141 provides a low sleep mode current as compared to the CS8141. Consult your local sales representative for a low sleep mode current version of the CS8140.

Features

• 5.0 V ±4.0%, 500 mA Output Voltage

• Lower Quiescent Current

• Improved Filtering for /RESET Functionality

• P Compatible Control Functions

♦ Watchdog ♦ RESET ♦ ENABLE

• Low Dropout Voltage (1.25 V @ 500 mA)

• Low Quiescent Current (7.0 mA @ 500 mA)

• Low Noise, Low Drift

• Low Current SLEEP Mode 50 A (max)

• Fault Protection

♦ Thermal Shutdown ♦ Short Circuit ♦ 60 V Peak Transient Voltage

• NCV Prefix for Automotive and Other Applications Requiring Site

and Control Changes

• Pb−Free Package is Available*

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D2PAK−7

DPS SUFFIX

ORDERING INFORMATION

Device Package Shipping

CASE 936AB

A = Assembly Location WL = Wafer Lot Y = Year WW = Work Week

PIN CONNECTIONS

Tab = GND Pin 1. V

2. ENABLE

3. RESET

4. GND

5. Delay

6. WDI

7. V

MARKING DIAGRAM

NCV8141

AWLYWW

OUT

†

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

download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D.

 Semiconductor Components Industries, LLC, 2004

August, 2004 − Rev. 5

1 Publication Order Number:

NCV8141D2T D2PAK 50 Units/Rail NCV8141D2TG D2PAK

(Pb−Free)

NCV8141D2TR4 D2PAK 750 Tape & Reel †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.

50 Units/Rail

NCV8141/D

NCV8141

Overvoltage

Reference & Bias

Overtemperature

Regulation

ENABLE

WDI

Control Logic

ENABLE

RESET

Delay

GND

Watchdog

Figure 1. Block Diagram

PIN FUNCTION DESCRIPTION

Pin Symbol Function

1 V

2 ENABLE CMOS compatible logical input. V

Supply voltage to IC, usually direct from the battery.

is disabled when ENABLE is LOW and WDI is beyond its

preset limits.

OUT

Short Circuit

Undervoltage

OUT

Sense

RESET

Delay

3 RESET CMOS compatible output lead. RESET goes low whenever V

value for more than 2.0 s or WDI signal falls outside it’s window limits.

drops below 4.5% of it’s typical

OUT

4 GND Ground Connection. 5 Delay Timing capacitor for Watchdog and RESET functions. 6 WDI CMOS compatible input lead. The Watchdog function monitors the falling edge of the incoming digital

pulse train. The signal is usually generated by the system microprocessor.

7 V

OUT

Regulated output voltage, 5.0 V (typ).

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NCV8141

MAXIMUM RATINGS

Rating Value Unit

Input Operating Range −0.5 to 26 V Peak Transient Voltage (46 V Load Dump @ 14 V V Electrostatic Discharge (Human Body Model) 4.0 kV

WDI Input Signal Range −0.3 to 7.0 V Internal Power Dissipation Internally Limited − Junction Temperature Range (TJ) −40 to +150 °C Storage Temperature Range −65 to +150 °C

) 60 V

BAT

ENABLE −0.3 to V

Package Thermal Resistance, D2PAK 7−Pin

Junction−to−Case, R



Junction−to−Ambient, R



1.5

10−50†

°C/W °C/W

Lead Temperature Soldering: Reflow (SMD styles only) (Note 1) 225 peak (Note 2) °C

Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously . If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected.

= R

+ R

†Depending on thermal properties of substrate R

1. 60 seconds max above 183°C.



2. −5.0°C/+0°C allowable conditions.

ELECTRICAL CHARACTERISTICS (7.0 ≤ V

≤26 V , 5 .0 m A ≤ I

≤500 mA, −40°C ≤ TJ ≤150°C, −40°C ≤ TA ≤125°C, u nle ss o the rwise

OUT

noted.) (Note 3)

Characteristic

Output Stage (V

Output Voltage, V Dropout Voltage (VIN − V

OUT

)

) I

OUT

7.0 V ≤ VIN ≤ 26 V, 5.0 mA < I

Line Regulation I Load Regulation VIN = 14 V, 50 mA ≤ I Output Impedance, R

OUT

Test Conditions Min Typ Max Unit

< 500 mA 4.8 5.0 5.2 V

OUT

= 500 mA − 1.25 1.50 V

OUT

= 50 mA, 7.0 V ≤ VIN ≤ 26 V, − 5.0 25 mV

OUT

≤ 500 mA − 5.0 80 mV

OUT

500 mA DC and 10 mA AC,

− 200 − m

100 Hz ≤ f ≤ 10 kHz

Quiescent Current, (IQ)

Active Mode Sleep Mode

Ripple Rejection 7 .0 V ≤ VIN ≤ 17 V, I

Current Limit VIN = 7.0 V, V

0 ≤ I

≤ 500 mA, 7.0 V ≤ VIN ≤ 26 V

OUT

= 0 mA, VIN = 13 V, ENABLE = 0 V

OUT

= 250 mA,

OUT

f = 120 Hz

= 4.5 V 600 1200 2000 mA

OUT

−

7.0 25

15 50

60 75 − dB

Thermal Shutdown Guaranteed by Design 150 180 − °C Overvoltage Shutdown V

< 1.0 V 30 34 38 V

OUT

ENABLE

Threshold

HIGH LOW

OUT

≥ 0.5 V, (V

< 0.5 V, (V

OUT(ON)

OUT(OFF)

)

3.5

−

4.05

3.95

4.50

−

Input Current

HIGH LOW

ENABLE = 5.0 V

ENABLE = 0 V

−

−1.0

1.0

Threshold Hysteresis (HIGH − LOW) − 80 − mV

3. To observe safe operating junction temperatures, low duty cycle pulse testing is used in tests where applicable.

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A

V V

A A

NCV8141

ELECTRICAL CHARACTERISTICS (continued) (7.0 ≤ V

≤ 26 V, 5.0 mA ≤ I

≤ 500 mA, −40°C ≤ TJ ≤ 150°C, −40°C ≤ TA ≤

OUT

125°C, unless otherwise noted.) (Note 4)

Characteristic

Test Conditions Min Typ Max Unit

RESET

Threshold HIGH V Threshold LOW V

R(HI)

R(LOW)

Increasing 4.65 4.90 V

OUT

Decreasing 4.50 4.70 4.90 V

OUT

− 0.05 V

Threshold Hysteresis (VRH) (HIGH − LOW) 150 200 250 mV RESET Output Leakage

RESET = HIGH Output Voltage Low (V Output Voltage Low (V Delay Times t Delay Times t

POR

WDI(RESET)

) 1.0 V ≤ V

L(LOW)

) V

Rpeak

≥ V

OUT

R(HI)

≤ V

OUT

, Power up, Power down − 0.6 1.0 V

OUT

C C

, RP = 2.7 k (Note 5) − 0.1 0.4 V

R(LOW)

= 0.1 F 30 47.5 65 ms

DELAY

= 0.1 F 0.5 1.0 1.5 ms

DELAY

− − 25 A

Watchdog

Input Voltage High

− 2.0 − − V Input Voltage Low − − − 0.8 V Input Current WDI ≤ V Threshold Frequency f

WDI

= 0.1 F 64 77 96 Hz

DELAY

OUT

− 0 10 A

4. To observe safe operating junction temperatures, low duty cycle pulse testing is used in tests where applicable. is connected to RESET and V

5. R

OUT.

1000

100

ESR ()

0.1

0.01

TYPICAL PERFORMANCE CHARACTERISTICS

1000

ESR ()

100

Unstable Region

550

10 20 30 4015

Output Current (mA)

Unstable Region

Stable Region

= 10 F

vout

10 20 30 4015

550

25 35 45

Output Current (mA)

Figure 2. Output Stability Figure 3. Output Stability with Capacitor Change

= 10 F

vout

Stable Region

25 35 45

= 0.1 F

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