ncv4279bdw ON Semiconductor, ncv4279bdw Datasheet

ncv4279bdw

Manufacturer Part Number

ncv4279bdw

Description

5.0 V Micropower 150 Ma Ldo Linear Regulator With Delay, Adjustable Reset, And Monitor Flag

Manufacturer

ON Semiconductor

Datasheet

1.NCV4279BDW.pdf (12 pages)

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NCV4279B

5.0 V Micropower 150 mA

LDO Linear Regulator with

DELAY, Adjustable RESET,

and Monitor FLAG

The output current capability is 150 mA.

dropout voltage of 0.6 V at 150 mA. Low quiescent current is a feature

drawing only 90 mA with a 100 mA load. This part is ideal for any and

all battery operated microprocessor equipment.

DELAY), and a FLAG monitor which can be used to provide an early

warning signal to the microprocessor of a potential impending RESET

signal. The use of the FLAG monitor allows the microprocessor to

finish any signal processing before the RESET shuts the

microprocessor down.

low as 1.0 V. The RESET function is activated during the power up

sequence or during normal operation if the output voltage drops

outside the regulation limits.

external resistor divider to R

thermal overload conditions. The device can withstand load dump

transients making it suitable for use in automotive environments. The

device has also been optimized for EMC conditions.

Features

August, 2003 − Rev. 1

The NCV4279B is a 5.0 V precision micropower voltage regulator.

The output voltage is accurate within 2.0% with a maximum

Microprocessor control logic includes an active RESET (with

The active RESET circuit operates correctly at an output voltage as

The reset threshold voltage can be decreased by the connection of

The regulator is protected against reverse battery, short circuit, and

and Control Changes

5.0 V 2.0% Output

Low 90 mA Quiescent Current

Active RESET

Adjustable Reset

150 mA Output Current Capability

Fault Protection

Early Warning through FLAG/MON Leads

Internally Fused Leads in SO−14 and SO−20L Packages

NCV Prefix for Automotive and Other Applications Requiring Site

Semiconductor Components Industries, LLC, 2003

−

+60 V Peak Transient Voltage

−15 V Reverse Voltage

Short Circuit

Thermal Overload

ADJ

lead.

See detailed ordering and shipping information in the package

dimensions section on page 10 of this data sheet.

SO−14

SO−20L

SO−8

ORDERING INFORMATION

DELAY

RESET

DELAY

MON

RESET

DELAY

ADJ

GND

http://onsemi.com

WL, L

YY, Y

WW, W = Work Week

GND

PIN CONNECTIONS

ADJ

CASE 751A

ADJ

D SUFFIX

DW SUFFIX

CASE 751D

SO−14

CASE 751

D SUFFIX

SO−20L

SO−8

= Assembly Location

= Wafer Lot

= Year

MARKING DIAGRAMS

Publication Order Number:

MON

GND

FLAG

MON

GND

FLAG

NCV4279B

AWLYWW

FLAG

RESET

GND

OUT

AWLYYWW

OUT

NCV4279B

NCV4279B/D

4279B

ALYW

Related parts for ncv4279bdw

ncv4279bdw Summary of contents

Page 1

NCV4279B 5.0 V Micropower 150 mA LDO Linear Regulator with DELAY, Adjustable RESET, and Monitor FLAG The NCV4279B is a 5.0 V precision micropower voltage regulator. The output current capability is 150 mA. The output voltage is accurate within 2.0% ...

Page 2

V V BAT NCV4279B Delay C DELAY FLAG GND { MAXIMUM RATINGS* V (DC) IN Peak Transient Voltage (46 V Load Dump @ V Operating Voltage V (DC) OUT Voltage Range (RESET, FLAG) Input Voltage Range (MON) ...

Page 3

ELECTRICAL CHARACTERISTICS (I Characteristic Output Stage Output Voltage 9.0 V < V 6.0 V < V Dropout Voltage (V − OUT OUT I OUT Load Regulation V IN Line Regulation [V OUT Quiescent Current ...

Page 4

PACKAGE PIN DESCRIPTION Package Pin Number SO−8 SO−14 SO−20L 3−5, 10−12 4−7, 14−17 − 13 ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS 120 100 I = 100 mA OUT (V) IN Figure 6. Quiescent Current vs. Input Voltage 1000 Unstable Region 100 10 Stable Region C ...

Page 6

V IN Current Source (Circuit Bias) I BIAS + R + ADJ − RESET + − 3.0 A Delay MON NCV4279B Current Limit Sense I BIAS + − Error Amplifier V BG 1.8 V Thermal Protection Bandgap Reference ...

Page 7

REGULATOR CONTROL FUNCTIONS The NCV4279B contains the microprocessor compatible control function RESET (Figure 11 OUT DELAY RESET Figure 11. Reset and Delay Circuit Wave Forms RESET Function A RESET signal (low voltage) is ...

Page 8

FLAG MONITOR Figure 14 shows the FLAG Monitor waveforms as a result of the circuit depicted in Figure 13. As the output voltage falls (V ), the Monitor threshold is crossed. This causes OUT the voltage on the FLAG output ...

Page 9

HEAT SINKS A heat sink effectively increases the surface area of the package to improve the flow of heat away from the IC and into the surrounding air. Each material in the heat flow path between the IC and the ...

Page 10

... ORDERING INFORMATION Device Output Voltage NCV4279BD1 NCV4279BD1R2 NCV4279BD2 NCV4279BD2R2 NCV4279BDW NCV4279BDWR2 NCV4279B Package SO− 5 SO−14 SO−20L SO 20L http://onsemi.com 10 Shipping 98 Units/Rail 2500 Tape & Reel 55 Units/Rail 1000 Tape & Reel 37 Units/Rail 1000 Tape & Reel ...

Page 11

−Y− G −Z− 0.25 (0.010 −A− −B− −T− K SEATING PLANE 0.25 (0.010 NCV4279B PACKAGE DIMENSIONS ...

Page 12

... SEATING PLANE JAPAN: ON Semiconductor, Japan Customer Focus Center 2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051 Phone: 81−3−5773−3850 ON Semiconductor Website: http://onsemi.com For additional information, please contact your local Sales Representative. http://onsemi.com 12 NOTES: 1. DIMENSIONS ARE IN MILLIMETERS. ...

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