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PDF NCV8770 Data sheet ( Hoja de datos )
| Número de pieza | NCV8770 | |
| Descripción | Ultra Low Iq 350 mA LDO Regulator | |
| Fabricantes | ON Semiconductor | |
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NCV8770
Ultra Low Iq 350 mA LDO
Regulator with Reset
The NCV8770 is 350 mA LDO regulator with integrated reset
functions dedicated for microprocessor applications. Its robustness allows
NCV8770 to be used in severe automotive environments. Ultra low
quiescent current as low as 21 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 NCV8770
contains protection functions as current limit, thermal shutdown and
reverse output current protection.
Features
• Output Voltage Options: 5 V
• Output Voltage Accuracy: ±1.5% (TJ = 25°C to 125°C)
• Output Current up to 350 mA
• Ultra Low Quiescent Current: typ 21 mA (max 28 mA)
• Very Wide Range of Cout and ESR Values for Stability
• Microprocessor Compatible Control Functions:
− Reset with Adjustable Power−On Delay
• 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
NCV8770
DT
Vout
Cout
1 mF
VDD
Microprocessor
RO
GND
RESET
Figure 1. Typical Application Schematic
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MARKING
DIAGRAMS
D2PAK−5
D5S SUFFIX
CASE 936A
NC
V8770yxx
AWLYWWG
y = Timing and Reset Threshold Option
xx = Voltage Option
A = Assembly Location
WL = Wafer Lot
Y = Year
WW = Work Week
G = Pb−Free Package
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
© Semiconductor Components Industries, LLC, 2011
August, 2011 − Rev. 0
1
Publication Order Number:
NCV8770/D
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NCV8770
ELECTRICAL CHARACTERISTICS Vin = 13.2 V, Cin = 0.1 mF, Cout = 1 mF, for typical values TJ = 25°C, for min/max values TJ =
−40°C to 150°C; unless otherwise noted. (Notes 9 and 10)
Parameter
Test Conditions
Symbol Min Typ Max Unit
RESET OUTPUT RO
Output Voltage Reset Threshold
(Note 13)
(NCV8770y) where y = 1,2,3,...
(NCV8770y) where y = A,B,C,...
Vout decreasing, Vin > 5.5 V
5.0 V
5.0 V
VRT
%Vout
90 93 96
87 90 93
Reset Hysteresis
Maximum Reset Sink Current
Reset Output Low Voltage
Reset Output High Voltage
Integrated Reset Pull−up Resistor
Reset Delay Time (Note 13)
Vout = 4.5 V, VRO = 0.25 V
Vout > 1 V, IRO < 200 mA
Min Available Time, DT connected to GND
Max Available Time, DT connected to Vout
VRH
IROmax
VROL
VROH
RRO
tRD
−
1.75
−
4.5
15
3.2
102.4
−20%
2.0
−
0.15
−
30
4.0
128
−
−
0.25
−
50
4.8
153.6
+20%
%Vout
mA
V
V
kW
ms
Reset Reaction Time (see Figure 21)
THERMAL SHUTDOWN
tRR 16 25 38 ms
Thermal Shutdown Temperature
(Note 12)
TSD 150 175 195
°C
Thermal Shutdown Hysteresis
(Note 12)
TSH − 25 − °C
9. Refer to ABSOLUTE MAXIMUM RATINGS and APPLICATION INFORMATION for Safe Operating Area.
10. Performance guaranteed over the indicated operating temperature range by design and/or characterization tested at TA [ TJ. Low duty
cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible.
11. Measured when output voltage falls 100 mV below the regulated voltage at Vin = 13.2 V.
12. Values based on design and/or characterization.
13. See APPLICATION INFORMATION section for Reset Thresholds and Reset Delay Time Options.
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NCV8770
100
90
80
70
PCB 1 oz Cu
60
50 PCB 2 oz Cu
400 100 200 300 400 500 600 700
COPPER HEAT SPREADER (mm2)
Figure 22. 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 NCV8770 and
make traces as short as possible.
ORDERING INFORMATION
Device
NCV87706DS50R4G
Output Voltage
5.0 V
Reset Delay Time
(DT = GND/Vout)
16/128 ms
Reset Threshold
93%
Marking
NC
V8770650
Package
D2PAK−5
(Pb−Free)
Shipping†
800 /
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.
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11
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| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet NCV8770.PDF ] | |
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