NCV4279B Datasheet, PDF (1/12 Pages) ON Semiconductor – 5.0 V Micropower 150 mA LDO Linear Regulator with DELAY, Adjustable RESET, and Monitor FLAG

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% 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.
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.
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.
The reset threshold voltage can be decreased by the connection of
external resistor divider to R_ADJ lead.
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.
Features
• 5.0 V ± 2.0% Output
• Low 90 mA Quiescent Current
• Active RESET
• Adjustable Reset
• 150 mA Output Current Capability
• Fault Protection
− +60 V Peak Transient Voltage
− −15 V Reverse Voltage
− Short Circuit
− Thermal Overload
• 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
and Control Changes
© Semiconductor Components Industries, LLC, 2003
1
August, 2003 − Rev. 1
8
1
14
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http://onsemi.com
MARKING DIAGRAMS
8
SO−8
D SUFFIX
CASE 751
4279B
ALYW
SO−14
D SUFFIX
CASE 751A
14 ¹
NCV4279B
AWLYWW
1
20
20
1
SO−20L
DW SUFFIX
CASE 751D
NCV4279B
AWLYYWW
1
A
= Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week
SO−8
PIN CONNECTIONS
1
V_IN
8
V_OUT
MON
FLAG
R_ADJ
RESET
DELAY
GND
SO−14
1
R_ADJ
DELAY
GND
GND
GND
NC
RESET
14
MON
V_IN
GND
GND
GND
V_OUT
FLAG
SO−20L
1
R_ADJ
DELAY
NC
GND
GND
GND
GND
NC
NC
RESET
20
MON
V_IN
NC
GND
GND
GND
GND
NC
V_OUT
FLAG
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 10 of this data sheet.
Publication Order Number:
NCV4279B/D