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NCV4279BD1R2

P1-P3P4-P6P7-P9P10-P10
© Semiconductor Components Industries, LLC, 2006
May, 2005 − Rev. 3
1 Publication Order Number:
NCV4279B/D
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 SOIC−14 and SO−20WB Packages
• NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
• Pb−Free Packages are Available
http://onsemi.com
SOIC−20 WB
DW SUFFIX
CASE 751D
1
SOIC−14
D SUFFIX
CASE 751A
1
PIN CONNECTIONS
FLAGRESET
V
OUT
NC
GNDGND
GNDGND
114
GNDGND
V
IN
DELAY
MONR
ADJ
MARKING DIAGRAM
S
A = Assembly Location
L, WL = Wafer Lot
Y, YY = Year
W, WW = Work Week
G or G = Pb−Free Package
1
20
NCNC
GNDGND
GND
GND
GND
GND
GNDGND
NCNC
V
IN
DELAY
MONR
ADJ
V
OUT
NC
FLAG
RESET
SO−20WB
SOIC−14
SOIC−8
D SUFFIX
CASE 751
1
GNDDELAY
18
RESET
R
ADJ
FLAGMON
V
OUT
V
IN
SOIC−8
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.
NCV4279B
AWLYYWWG
NCV4279B
AWLYWWG
1
14
4279B
ALYW
G
1
8
20
1
NCV4279B
http://onsemi.com
2
V
OUT
GND
V
IN
R
ADJ
NCV4279B
10 mF
10 k
R
RST
RESET
10 mF
Microprocessor
Delay
C
DELAY
V
BAT
V
DD
FLAG
Figure 1. Application Diagram
MON
R
FLG
10 k
I/O
I/O
MAXIMUM RATINGS*
{
Rating Value Unit
V
IN
(DC) −15 to 45 V
Peak Transient Voltage (46 V Load Dump @ V
IN
= 14 V) 60 V
Operating Voltage 45 V
V
OUT
(DC) 16 V
Voltage Range (RESET, FLAG) −0.3 to 10 V
Input Voltage Range (MON) −0.3 to 10 V
ESD Susceptibility (Human Body Model) 2.0 kV
Junction Temperature, T
J
−40 to +150 °C
Storage Temperature, T
S
−55 to 150 °C
Package Thermal Resistance, SOIC−8:
Junction−to−Case, R
q
JC
Junction−to−Ambient, R
q
JA
45
165
°C/W
Package Thermal Resistance, SOIC−14 (Fused) Minimum Pad Data:
Junction−to−Case, R
q
JC
Junction−to−Ambient, R
q
JA
Junction−to−Pin, R
q
JP
(Note 3)
15
110
33
°C/W
Package Thermal Resistance, SO−20WB (Fused) Minimum Pad Data:
Junction−to−Case, R
q
JC
Junction−to−Ambient, R
q
JA
Junction−to−Pin, R
q
JP
(Note 4)
12
82
26
°C/W
Lead Temperature Soldering: Reflow: (SMD styles only) (Notes 1, 2) 240 peak °C
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. 60 second maximum above 183°C.
2. −5°C/+0°C allowable conditions.
3. Measured to pin 9.
4. Measured to pin 12.
*The maximum package power dissipation must be observed.
†During the voltage range which exceeds the maximum tested voltage of V
IN
, operation is assured, but not specified. Wider limits may apply.
Thermal dissipation must be observed closely.
NCV4279B
http://onsemi.com
3
ELECTRICAL CHARACTERISTICS (I
OUT
= 1.0 mA, −40°C ≤ T
J
≤ 125°C; 6.0 V < V
IN
< 26 V; unless otherwise specified.)
Characteristic
Test Conditions Min Typ Max Unit
Output Stage
Output Voltage
9.0 V < V
IN
< 16 V, 100 mA ≤ I
OUT
≤ 150 mA
6.0 V < V
IN
< 26 V, 100 mA ≤ I
OUT
≤ 150 mA
4.90
4.85
5.0
5.0
5.10
5.15
V
Dropout Voltage (V
IN
− V
OUT
) I
OUT
= 150 mA
I
OUT
= 100 mA
−
−
400
100
600
150
mV
Load Regulation V
IN
= 14 V, 5.0 mA ≤ I
OUT
≤ 150 mA -30 5.0 30 mV
Line Regulation [V
OUT
(typ) + 1.0] < V
IN
< 26 V, I
OUT
= 1.0 mA − 15 60 mV
Quiescent Current, (I
Q
)
Active Mode
I
OUT
= 100 mA, V
IN
= 12 V, Delay = 3.0 V, MON = 3.0 V
I
OUT
= 75 mA, V
IN
= 14 V, Delay = 3.0 V, MON = 3.0 V
I
OUT
≤ 150 mA, V
IN
= 14 V, Delay = 3.0 V, MON = 3.0 V
−
−
−
90
4.0
12
125
6.0
19
mA
Current Limit − 151 300 − mA
Short Circuit Output Current V
OUT
= 0 V 40 190 − mA
Thermal Shutdown (Guaranteed by Design) 150 180 − °C
Reset Function (RESET)
RESET Threshold
HIGH (V
RH
)
LOW (V
RL
)
V
OUT
Increasing
V
OUT
Decreasing
4.55
4.50
4.70
4.60
0.98 × V
OUT
0.97 × V
OUT
V
V
Output Voltage Low (V
RLO
) 1.0 V ≤ V
OUT
≤ V
RL
, R
RESET
= 10 k − 0.1 0.4 V
Delay Switching Threshold (V
DT
) − 1.4 1.8 2.2 V
Reset Delay Low Voltage V
OUT
< RESET Threshold Low(min) − − 0.1 V
Delay Charge Current DELAY = 1.0 V, V
OUT
> V
RH
1.5 2.5 3.5
mA
Delay Discharge Current DELAY = 1.0 V, V
OUT
= 1.5 V 5.0 − − mA
Reset Adjust Switching Voltage
(V
R(ADJ)
)
− 1.23 1.31 1.39 V
FLAG/Monitor
Monitor Threshold Increasing and Decreasing 1.10 1.20 1.31 V
Hysteresis − 20 50 100 mV
Input Current MON = 2.0 V −0.5 0.1 0.5
mA
Output Saturation Voltage MON = 0 V, I
FLAG
= 1.0 mA − 0.1 0.4 V
PACKAGE PIN DESCRIPTION
Package Pin Number
Pin Symbol Function
SOIC−8 SOIC−14 SO−20WB
3 1 1 R
ADJ
Reset Adjust. If not needed connect to ground.
4 2 2 DELAY Timing capacitor for RESET function.
5 3−5, 10−12 4−7, 14−17 GND Ground. All GND leads must be connected to Ground
.
− 6 3, 8, 9, 13, 18 NC No connection.
6 7 10 RESET Active reset (accurate to V
OUT
≥ 1.0 V)
7 8 11 FLAG Open collector output from early warning comparator.
8 9 12 V
OUT
±2.0%, 150 mA output.
1 13 19 V
IN
Input Voltage.
2 14 20 MON Monitor. Input for early warning comparator. If not needed connect to V
OUT.
P1-P3P4-P6P7-P9P10-P10

NCV4279BD1R2

Mfr. #:
Buy NCV4279BD1R2
Manufacturer:
ON Semiconductor
Description:
IC REG LINEAR 5V 150MA 8SOIC
Lifecycle:
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