© Semiconductor Components Industries, LLC, 2017
January, 2019 − Rev. 3
1Publication Order Number:
NCP786A/D
NCP786A
Wide Input Voltage Range
10mA Ultra-Low Iq, High
PSRR Linear Regulator with
Adjustable Output Voltage
The NCP786A is 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 NCP786A
family offers ±3% initial accuracy, extremely high−power supply
rejection ratio and ultra−low quiescent current. The NCP786A family
is optimized for high−voltage line and load transients, making them
ideal for harsh environment applications. The output voltage can be set
by resistor divider in range from 1.27 V up to 15 V. DFN6 5x6 Pb−free
package with high allowable power dissipation keep small footprint at
space sensitive applications.
Features
•Wide Input Voltage Range:
DC: Up to 450 V
AC: 85 V to 260 V (half−wave rectifier and 4.7 mF capacitor)
•10 mA Guaranteed Output Current
•Ultra Low Quiescent Current: Typ. 10 mA (VOUT ≤ 15 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 2.2 mF MLCC
•Thermal Shutdown and Current Limit Protection
•Available in DFN6 5x6 Package
•This is a Pb−Free Device
Typical Applications
•Industrial Applications, Home Appliances
•Home Metering / Network Application
•Off−line Power Supplies
Figure 1. Typical Applications
VOUT
GND
1
ADJ
GND
NC
VIN
GND
NCP786
DFN6 5x6
EP
Vin = (55 – 450) V
2
3
4EP
6
5
NC VOUT = (1.275 – 15.0) V / 10mA
VIN
CIN
VOUT
COUT
R1
R2
2.2 mF
4.7 mF
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See detailed ordering and shipping information in the package
dimensions section on page 6 of this data sheet.
ORDERING INFORMATION
MARKING
DIAGRAM
DFN6 5x6
ST SUFFIX
CASE 506DV
(Note: Microdot may be in either location)
(Top View)
786A
XXX
ALLYYWWG
G
786A = Specific Device Marking
XXX = Voltage Version
(see page 6)
A = Assembly Location
LL = Wafer Lot
YY = Year
WW = Work Week
G= Pb−Free Package
NCP786A
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2
Figure 2. Simplified Internal Block Diagram
ADJ
+
−
+
−
VREF
1.27V
VIN
VOUT
GND
Thermal
Shutdown
Current
Limit
Table 1. PIN FUNCTION DESCRIPTION
Pin No. Pin Name Description
1 VIN Supply Voltage Input. Connect 4.7 mF capacitor from VIN to GND.
2 NC Not connected.
3 NC Not connected.
4 GND Ground connection.
5 VOUT Regulator Output. Connect 2.2 mF or higher MLCC capacitor from VOUT to GND.
6 ADJ ADJ pin for output voltage setting via resistors divider.
EP EP EP should be connected to GND potential.
Table 2. ABSOLUTE MAXIMUM RATINGS
Rating Symbol Value Unit
Input Voltage (Note 1) VIN −0.3 to 700 V
Output Voltage VOUT −0.3 to 18 V
Maximum Junction Temperature TJ(MAX) 125 °C
Storage Temperature TSTG −55 to 150 °C
ESD Capability, Human Body Model (All pins except HV pin no.1) (Note 2) ESDHBM 2000 V
ESD Capability, Machine Model (Note 2) ESDMM 200 V
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. Peak 650 V max 1 ms non repeated for 1 s
2. This device series incorporates ESD protection and is tested by the following methods:
ESD Human Body Model tested per AEC−Q100−002 (EIA/JESD22−A114)
ESD Machine Model tested per AEC−Q100−003 (EIA/JESD22−A115)
Latch−up Current Maximum Rating tested per JEDEC standard: JESD78.
Table 3. THERMAL CHARACTERISTICS
Rating Symbol Value Unit
Thermal Characteristics, DFN6
Thermal Resistance, Junction−to−Air
JEDEC 51.3, One side, 600 sq mm PCB
RqJA 82 °C/W
NCP786A
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Table 4. ELECTRICAL CHARACTERISTICS NCP786A Adj. (−40°C ≤ TJ ≤ 85°C; VIN = 340 V; IOUT = 100 mA, CIN = 4.7 mF,
COUT = 10 mF, unless otherwise noted. Typical values are at TJ = +25°C.) (Note 3)
Parameter Test Conditions Symbol Min Typ Max Unit
Operating Input Voltage DC VIN 55 450 V
Maximum output voltage −40°C ≤ TJ ≤ 85°C, Iout = 100 mA,
55 V ≤ Vin ≤ 450 V
Voutmax 15 V
Reference Voltage Accuracy TJ = 25°C, Iout = 100 mA, 55 V ≤ Vin ≤ 450 V VREF −3% 1.275 +3% V
−40°C ≤ TJ ≤ 85°C, Iout = 100 mA,
55 V ≤ Vin ≤ 450 V
VREF −5% 1.275 +5% V
Line Regulation VIN = 55 V to 450 V, Iout = 100 mARegLINE −0.5 0.1 +0.5 %
Load Regulation IOUT = 100 mA to 10 mA, Vin = 55 V RegLOAD −1.0 0.7 +1.0 %
Maximum Output Current 55 V ≤ Vin ≤ 450 V, (Note 4) IOUT 11 mA
Quiescent Current IOUT = 0, 55 V ≤ Vin ≤ 450 V IGND 10 15 mA
Ground current 55 V ≤ Vin ≤ 450 V, (Note 4)
0 < IOUT ≤ 10 mA
25 mA
ADJ Pin current 150 nA
Power Supply Rejection Ratio Vin = 340 VDC +1 Vpp modulation,
Iout = 100 mA
f = 1 kHz PSRR 65 dB
Noise f = 10 kHz to 1 MHz Vin = 340 VDC, Iout = 1 mA,
COUT = 10 mF
VNOISE 150 mVrms
Thermal Shutdown Temperature
(Note 5)
Temperature increasing from TJ = +25°C TSD 145 °C
Thermal Shutdown Hysteresis
(Note 5)
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.
3. 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.
4. Respect to Safe Operating Area
5. Guaranteed by design
NCP786A
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TYPICAL CHARACTERISTICS
Figure 3. Output Voltage vs. Input Voltage Figure 4. Output Voltage vs. Temperature
INPUT VOLTAGE (V) TEMPERATURE (°C)
40035030025020015010050
1.272
1.273
1.274
1.275
1.276
1.277
1.278
1.279
806040200−20−40
1.272
1.273
1.274
1.275
1.276
1.277
1.278
1.279
Figure 5. Quiescent Current vs. Input Voltage Figure 6. Output Voltage vs. Output Current
INPUT VOLTAGE (V) OUTPUT CURRENT (mA)
40035030025020015010050
3
4
5
6
7
8
9
10
76543210
1.266
1.268
1.270
1.272
1.274
1.276
1.278
Figure 7. Noise Density vs. Frequency
FREQUENCY (kHz)
10001001010.10.01
0
5
10
15
20
25
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
QUIESCENT CURRENT (mA)
OUTPUT VOLTAGE (V)
NOISE DENSITY (mV√Hz)
450
TA = 85°C
TA = 25°C
TA = 0°C
TA = −40°C
NCP786A Adj. VOUT(nom) = 1.275 V
CIN = 4.7 mF, C OUT = 10 mF
IOUT = 100 mA
450
VIN = 55 V
VIN = 150 V
VIN = 250 V
VIN = 350 V
VIN = 450 V
1098
VIN = 55 V
VIN = 75 V
VIN = 100 V
VIN = 150 V
VIN = 200 V
VIN = 250 V
VIN = 300 V
VIN = 350 V
NCP786A Adj. TA = 25°C
CIN = 4.7 mF, C OUT = 10 mF
VOUT(nom) = 1.275 V
NCP786A
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APPLICATION INFORMATION
Figure 8. Typical Application Schematics
NCP786A
Cin Cout
R1
R2
Vout = 1.275 V – 15 V / 10 mA
IN
GND
OUT
ADJ
Vin = (55 – 450) Vdc
Cin Cout
R1
R2
Vout = 1.275 V – 15 V / 10 mA
Vin = (85 – 265) Vac
Cin Cout
R1
R2
Vout = 1.275 V – 15 V / 10 mA
Vin = (85 – 265) Vac
NC
NC
EP
NCP786A
GND
NC
EP
IN OUT
NC ADJ
NCP786A
GND
NC
EP
OUT
IN
ADJ
NC
Input Decoupling (C1)
A 4.7 mF capacitor either ceramic or electrolytic is
recommended and should be connected close to the input pin
of NCP786A. Higher value 4.7 mF is necessary to keep the
input voltage above the required minimum input voltage at
full load for AC voltage as low as 85 V with half wave
rectifier. The capacitor 2.2 mF or 1 mF could be acceptable
for DC input voltage or AC input voltage 235 V ±20%.
There must be assured minimum Input Voltage more than
55 V at input pin of NCP786A regulator in order to keep
stable desired output voltage with guaranteed parameters.
Output Decoupling (C2)
The NCP786A Regulator does not require any specific
Equivalent Series Resistance (ESR). Thus capacitors
exhibiting ESRs ranging from a few mW up to 0.5 W can be
used safely. The minimum decoupling value is 2.2 mF. The
regulator accepts ceramic chip capacitors as well as
tantalum devices or low ESR electrolytic capacitors. Larger
values improve noise rejection and especially load transient
response.
Layout Recommendations
Please be sure that the VIN and GND lines are sufficiently
wide. When the impedance of these lines is high, there is a
chance to pick up noise or to cause the malfunction of
regulator.
Set external components, especially the output capacitor,
as close as possible to the circuit, and make leads as short as
possible.
Thermal
As power across the NCP786A increases, it might become
necessary to provide some thermal relief. The maximum
power dissipation supported by the device is dependent
upon board design layout and used package. Mounting pad
configuration on the PCB, the board material, and also the
ambient temperature affect the rate of temperature rise for
the part. This is stating that when the NCP786A has good
thermal conductivity through the PCB, the junction
temperature will be relatively low with high power
dissipation applications.
NCP786A
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Output Voltage
The output voltage can be set by using a resistor divider
as shown in Figure 1 in range from 1.275 V up to 15 V. The
appropriate resistor divider can be found by solving the
equation below.
VOUT +1.275 ǒ1)R1
R2Ǔ)ǒIADJ R1Ǔ(eq. 1)
The recommended current through the resistor divider is
from 1 mA to 3 mA in order to keep negligible ADJ pin
consumption. In this case we can simplify Equation 1 to:
VOUT +1.275 ǒ1)R1
R2Ǔ(eq. 2)
ORDERING INFORMATION
Part Number Output Voltage Marking Package Shipping†
NCP786AMNADJTBG Adjustable ADJ DFN6 5x6
(Pb−Free)
1000 / 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.
NCP786A
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7
PACKAGE DIMENSIONS
DFN6 5x6, 1.27P
CASE 506DV
ISSUE O
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ASME Y14.5M, 1994.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSION b APPLIES TO PLATED
TERMINAL AND IS MEASURED BETWEEN
0.20 AND 0.25 MM FROM THE TERMINAL TIP.
4. COPLANARITY APPLIES TO THE EXPOSED
PAD AS WELL AS THE TERMINALS.
5. FOR DEVICE OPN CONTAINING W OPTION,
DETAIL B ALTERNATE B−1 AND DETAIL A
ALTERNATE A−1 CONSTRUCTIONS ARE
NOT APPLICABLE.
TOP VIEW
SIDE VIEW
D
E
B
A
PIN ONE
DIM MIN NOM
MILLIMETERS
A0.80 0.90
A1 −−− −−−
b0.30 0.40
D5.00
D2 4.10 4.20
E6.00
E2 1.75 1.85
e1.27 BSC
K0.25 −−−
L0.45 0.55
0.08 C
0.10 C DETAIL A
MAX
1.00
0.05
0.50
4.30
1.95
−−−
0.65
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
SOLDERING FOOTPRINT*
4.90 5.10
5.90 6.10
RECOMMENDED
DETAIL A
L
ALTERNATE TERMINAL
CONSTRUCTIONS
L
ÉÉ
ÇÇ
ÇÇ
DETAIL B
MOLD CMPDEXPOSED Cu
ALTERNATE
CONSTRUCTIONS
ÉÉ
ÇÇ
A1
A3
ALTERNATE B−1 ALTERNATE B−2
ALTERNATE A−1 ALTERNATE A−2
A3 0.20 REF
e2 3.81 BSC
É
É
REFERENCE
SEATING
PLANE
A3 A
A1
C
0.20
6.30
3.81
0.60
1.95
6X
PITCH
DIMENSIONS: MILLIMETERS
1
5.30
4.41
1.27 PITCH
0.75
6X
2
63
PACKAGE
OUTLINE
BOTTOM VIEW
12
e2
10X
D2
K
E2
b
A0.10 B
C
0.05 C
L
DETAIL A
NOTE 3
e
6X
36
NOTE 4
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Phone: 421 33 790 2910
NCP786A/D
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