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PDF NCV8774 Data sheet ( Hoja de datos )
| Número de pieza | NCV8774 | |
| Descripción | LDO Regulator | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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NCV8774
Ultra Low Iq 350 mA LDO
Regulator
The NCV8774 is a 350 mA LDO regulator. Its robustness allows
NCV8774 to be used in severe automotive environments. Ultra low
quiescent current as low as 18 mA typical makes it suitable for
applications permanently connected to battery requiring ultra low
quiescent current with or without load. This feature is especially critical
when modules remain in active mode when ignition is off. The NCV8774
contains protection functions as current limit, thermal shutdown and
reverse output current protection.
Features
• Output Voltage Options: 3.3 V and 5 V
• Output Voltage Accuracy: ±1.5% (TJ = 25°C to 125°C)
• Output Current up to 350 mA
• Ultra Low Quiescent Current: typ 18 mA (max 23 mA)
• Very Wide Range of Cout and ESR Values for Stability
• Wide Input Voltage Operation Range: up to 40 V
• Protection Features
− Current Limitation
− Thermal Shutdown
• These are Pb−Free Devices
Typical Applications
• Body Control Module
• Instruments and Clusters
• Occupant Protection and Comfort
• Powertrain
VBAT
Cin
0.1 mF
Vin Vout
NCV8774
GND
Vout
Cout
1 mF
http://onsemi.com
MARKING
DIAGRAM
DPAK−3
DT SUFFIX
CASE 369C
8774xxG
ALYWW
xx
A
WL, L
Y
WW
G
= Voltage Option
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
Figure 1. Typical Application Schematic
© Semiconductor Components Industries, LLC, 2013
April, 2013 − Rev. 0
1
Publication Order Number:
NCV8774/D
Free Datasheet http://www.datasheet4u.com/
1 page  
NCV8774
TYPICAL CHARACTERISTICS
24
23
Vin = 13.2 V
Iout = 100 mA
22
21
20
19
18
17
16
15
14−40 −20 0 20 40 60 80 100 120 140 160
TJ, JUNCTION TEMPERATURE (°C)
Figure 4. Quiescent Current vs. Temperature
100
Iout = 100 mA
TJ = 25°C
80
60
40
20
0
0 5 10 15 20 25 30 35 40
Vin, INPUT VOLTAGE (V)
Figure 5. Quiescent Current vs. Input Voltage
24
23
Vin = 13.2 V
22
21 TJ = 150°C
20
19 TJ = −40°C
18 TJ = 25°C
17
16
15
140 50 100 150 200 250 300 350
IOUT, OUTPUT CURRENT (mA)
Figure 6. Quiescent Current vs. Output Current
5.10
5.08
5.05
Vin = 13.2 V
Iout = 100 mA
5.03
5.00
4.98
4.95
4.93
4.90
−40 −20 0 20 40 60 80 100 120 140 160
TJ, JUNCTION TEMPERATURE (°C)
Figure 7. Output Voltage vs. Temperature
(5 V Option)
3.36
3.34
3.32
Vin = 13.2 V
Iout = 100 mA
3.3
3.28
3.26−40 −20 0 20 40 60 80 100 120 140 160
TJ, JUNCTION TEMPERATURE (°C)
Figure 8. Output Voltage vs. Temperature
(3.3 V Option)
http://onsemi.com
5
Free Datasheet http://www.datasheet4u.com/
5 Page 
NCV8774
APPLICATIONS INFORMATION
The NCV8774 regulator is self−protected with internal
thermal shutdown and internal current limit. Typical
characteristics are shown in Figures 4 to 26.
Input Decoupling (Cin)
A ceramic or tantalum 0.1 mF capacitor is recommended
and should be connected close to the NCV8774 package.
Higher capacitance and lower ESR will improve the overall
line and load transient response.
If extremely fast input voltage transients are expected then
appropriate input filter must be used in order to decrease
rising and/or falling edges below 50 V/ms for proper
operation. The filter can be composed of several capacitors
in parallel.
Since TJ is not recommended to exceed 150°C, then the
NCV8774 soldered on 645 mm2, 1 oz copper area, FR4 can
dissipate up to 2.35 W when the ambient temperature (TA)
is 25°C. See Figure 27 for RqJA versus PCB area. The power
dissipated by the NCV8774 can be calculated from the
following equations:
PD + VinǒIq@IoutǓ ) IoutǒVin * VoutǓ
(eq. 2)
or
NOTE:
Vin(max)
+
PD(max) ) ǒVout
Iout ) Iq
IoutǓ
(eq. 3)
Items containing Iq can be neglected if Iout >> Iq.
Output Decoupling (Cout)
The NCV8774 is a stable component and does not require
a minimum Equivalent Series Resistance (ESR) for the
output capacitor. Stability region of ESR vs Output Current
is shown in Figure 17. The minimum output decoupling
value is 1 mF and can be augmented to fulfill stringent load
transient requirements. The regulator works with ceramic
chip capacitors as well as tantalum devices. Larger values
improve noise rejection and load regulation transient
response.
Thermal Considerations
As power in the NCV8774 increases, it might become
necessary to provide some thermal relief. The maximum
power dissipation supported by the device is dependent
upon board design and layout. Mounting pad configuration
on the PCB, the board material, and the ambient temperature
affect the rate of junction temperature rise for the part. When
the NCV8774 has good thermal conductivity through the
PCB, the junction temperature will be relatively low with
high power applications. The maximum dissipation the
NCV8774 can handle is given by:
ƪ ƫTJ(max) * TA
PD(max) +
RqJA
ORDERING INFORMATION
(eq. 1)
100
90
80
70 DPAK 1 oz
60
50 DPAK 2 oz
40
0 100 200 300 400 500 600 700
COPPER HEAT SPREADER (mm2)
Figure 27. Thermal Resistance vs. PCB Copper Area
Hints
Vin and GND printed circuit board traces should be as
wide as possible. When the impedance of these traces is
high, there is a chance to pick up noise or cause the regulator
to malfunction. Place external components, especially the
output capacitor, as close as possible to the NCV8774 and
make traces as short as possible.
Device
Output Voltage
Marking
Package
Shipping†
NCV8774DT50RKG
5.0 V
877450G
DPAK−3
(Pb−Free)
2500 /
Tape & Reel
NCV8774DT33RKG
3.3 V
877433G
DPAK−3
(Pb−Free)
2500 /
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.
http://onsemi.com
11
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet NCV8774.PDF ] | |
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