NCV4279B
5.0 V Micropower 150 mA
LDO Linear Regulator with
DELAY, Adjustable RESET,
and Monitor FLAG
http://onsemi.com
MARKING DIAGRAMS
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% with a maximum
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.
8
SO−8
4279B
ALYW
D SUFFIX
CASE 751
8
1
Microprocessor control logic includes an active RESET (with
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.
1
14
SO−14
D SUFFIX
CASE 751A
NCV4279B
AWLYWW
14
1
1
20
The active RESET circuit operates correctly at an output voltage as
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.
NCV4279B
AWLYYWW
20
SO−20L
DW SUFFIX
CASE 751D
1
The reset threshold voltage can be decreased by the connection of
1
external resistor divider to R
lead.
ADJ
A
= Assembly Location
WL, L = Wafer Lot
YY, Y = Year
The regulator is protected against reverse battery, short circuit, and
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.
WW, W = Work Week
PIN CONNECTIONS
1
8
SO−8
V
IN
V
OUT
Features
• 5.0 V ± 2.0% Output
• Low 90 mA Quiescent Current
• Active RESET
• Adjustable Reset
• 150 mA Output Current Capability
• Fault Protection
MON
FLAG
RESET
GND
R
ADJ
DELAY
1
14
SO−14
R
MON
ADJ
DELAY
GND
GND
V
IN
GND
GND
GND
GND
− +60 V Peak Transient Voltage
− −15 V Reverse Voltage
NC
V
OUT
RESET
FLAG
− Short Circuit
− Thermal Overload
• Early Warning through FLAG/MON Leads
• Internally Fused Leads in SO−14 and SO−20L Packages
1
20
SO−20L
R
MON
ADJ
DELAY
NC
GND
GND
GND
GND
V
IN
NC
GND
GND
GND
GND
NC
• NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
NC
NC
V
OUT
RESET
FLAG
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 10 of this data sheet.
Semiconductor Components Industries, LLC, 2003
1
Publication Order Number:
August, 2003 − Rev. 1
NCV4279B/D