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PDF NCP785B Data sheet ( Hoja de datos )
| Número de pieza | NCP785B | |
| Descripción | High PSRR Linear Regulator | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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NCP785B
Product Preview
Wide Input Voltage Range
10 mA Ultra-Low Iq, High
PSRR Linear Regulator with
Enable Pin
http://onsemi.com
The NCP785B is a high−performance linear regulator, offering a
very wide operating input voltage range of up to 450 V DC, with an
output current of up to 10 mA.
Ideal for high input voltage applications such as industrial and home
metering, home appliances. The NCP785B LDO offers ±5% initial
accuracy, extremely high−power supply rejection ratio and ultra−low
quiescent current. It is optimized for high−voltage operations, making
them ideal for harsh environment applications.
The device is offered in fixed output voltages 3.3 V, 5.0 V, 12 V and
15 V. NCP785B has an Enable pin with internal pull up which allows
for easy output voltage ON/OFF control. SOT−223 package option
provides good thermal performance as well as helps to minimize the
overall solution size.
Features
• Wide Input Voltage Range:
DC: Up to 450 V
AC: 85 V to 260 V (half−wave rectifier and 2.2 mF capacitor)
• 10 mA Guaranteed Output Current
• Ultra Low Quiescent Current: Typ. 15 mA (VOUT ≤ 5 V)
• ±5% Accuracy Over Full Load, Line and Temperature Variations
• Ultra−high PSRR: 70 dB at 60 Hz, 90 dB at 100 kHz
• Stable with Ceramic Output Capacitor 22 mF MLCC
• Thermal Shutdown and Current Limit Protection
• Available in Thermally Enhanced SOT−223 Package
• This is a Pb−Free Device
Typical Applications
• Industrial Applications, Home Appliances
• Home Metering / Network Application
• Off−line Power Supplies
MARKING
DIAGRAMS
SOT−223
S SUFFIX
CASE 318E
4
AYW
XXXXXG
G
123
(Top View)
A = Assembly Location
Y = Year
W = Work Week
XXXXX = Specific Device Code
G = Pb−Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
VIN
15 V − 450 V
CIN
2.2 μF
VIN VOUT
NCP785B
EN
GND
COUT
22 μF
VOUT
3.3 V, 5 V,
12 V, 15 V
VIN
85 VAC − 260 VAC
CIN
2.2 μF/
450 V
VIN VOUT
NCP785B
EN
GND
COUT
22 μF
VOUT
3.3 V, 5 V,
12 V, 15 V
VEN
ON
OFF
VEN
ON
OFF
Figure 1. Typical Applications
This document contains information on a product under development. ON Semiconductor
reserves the right to change or discontinue this product without notice.
© Semiconductor Components Industries, LLC, 2014
February, 2014 − Rev. P0
1
Publication Order Number:
NCP785B/D
1 page  
NCP785B
Table 6. ELECTRICAL CHARACTERISTICS, VOUT = 12 V (−40°C ≤ TJ ≤ 85°C; VIN = 340 V; IOUT = 100 mA, CIN = 1 mF,
COUT = 22 mF, unless otherwise noted. Typical values are at TJ = +25°C.) (Note 11)
Parameter
Test Conditions
Symbol Min Typ Max
Unit
Operating Input Voltage DC
Output Voltage Accuracy
TJ = 25°C, Iout = 100 mA, 35 V ≤ Vin ≤ 450 V
−40°C ≤ TJ ≤ 85°C, Iout = 100 mA,
35 V ≤ Vin ≤ 450 V
VIN 35
450 V
VOUT 11.46 12 12.54 V
VOUT 11.4 12 12.6 V
Line Regulation
Load Regulation
Maximum Output Current (Note 12)
Quiescent Current
Ground Current (Note 12)
EN Pin High Threshold
EN Pin Low Threshold
EN Pin Pull up Current (Note 13)
EN Pin Voltage (Note 14)
Power Supply Rejection Ratio
35 V ≤ Vin ≤ 450 V, Iout = 100 mA
100 mA ≤ IOUT ≤ 10 mA, Vin = 35 V
38 V ≤ Vin ≤ 450 V
IOUT = 0, 35 V ≤ Vin ≤ 450 V
35 V ≤ Vin ≤ 450 V
0 < IOUT ≤ 10 mA
VEN Voltage increasing
VEN Voltage decreasing
Vin = 450 VDC
Vin = 450 VDC
Vin = 340 VDC +1 Vpp
modulation, Iout = 100 mA
f = 1 kHz
RegLINE
RegLOAD
IOUT
IQ
IGND
−0.5
−1.0
11.5
VEN_HI
VEN_LO
IEN
VEN
PSRR
1.4
0.1
0.66
12
5
3.0
70
+0.5
+1.0
18
19
0.8
3.3
%/V
%
mA
mA
mA
V
mA
V
dB
Output Noise
Thermal Shutdown Temperature
(Note 13)
f = 10 kHz to 100 kHz
Vin = 340 VDC, Iout = 100 mA
Temperature increasing from TJ = +25°C
VNOISE
TSD
280 mVrms
145 °C
Thermal Shutdown Hysteresis
(Note 13)
Temperature falling from TSD
TSDH − 10 − °C
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
11. Performance guaranteed over the indicated operating temperature range by design and/or characterization production tested at TJ = TA =
25°C. Low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible.
12. A proper heatsinking and/or low duty cycle pulse techniques are used to operate the device within the Safe Operating Area.
13. Guaranteed by design
14. Voltage present at the EN pin in case that this pin is left floating. It is generated by the internal EN Pin Pull−up Current.
http://onsemi.com
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| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet NCP785B.PDF ] | |
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