NCP786L [ONSEMI]
Wide Input Voltage Range 5mA Ultra-Low Iq, High PSRR Linear Regulator with Adjustable Output Voltage;
| 型号： | NCP786L |
| 厂家： | 
ONSEMI |
| 描述： | Wide Input Voltage Range 5mA Ultra-Low Iq, High PSRR Linear Regulator with Adjustable Output Voltage |
| 文件： | 总7页 (文件大小：93K) |
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NCP786L
Wide Input Voltage Range
5ꢀmA Ultra-Low Iq, High
PSRR Linear Regulator with
Adjustable Output Voltage
www.onsemi.com
The NCP786L 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 5 mA. Ideal for high input voltage applications such as
industrial and home metering, home appliances. The NCP786L family
offers 5% initial accuracy, extremely high−power supply rejection
ratio and ultra−low quiescent current. The NCP786L 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. SOT−223 Pb−free
package with high allowable power dissipation keep small footprint at
space sensitive applications.
MARKING
DIAGRAM
4
AYW
XXXXXG
G
SOT−223
S SUFFIX
CASE 318E
1
2
3
(Top View)
= Assembly Location
A
Y
W
= Year
= Work Week
Features
• Wide Input Voltage Range:
DC: Up to 450 V
XXXXX = Specific Device Code
G
= Pb−Free Package
AC: 85 V to 260 V (half−wave rectifier and 2.2 mF capacitor)
(Note: Microdot may be in either location)
• 5 mA Guaranteed Output Current
• Ultra Low Quiescent Current: Typ. 10 mA (V
≤ 15 V)
OUT
ORDERING INFORMATION
See detailed ordering and shipping information in the package
•
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 Thermally Enhanced SOT−223 Package
• This is a Pb−Free Device
dimensions section on page 6 of this data sheet.
Typical Applications
• Industrial Applications, Home Appliances
• Home Metering / Network Application
• Off−line Power Supplies
Vin = 55 V – 450 V
Vout = 1.27 V – 15 V / 5 mA
OUT
NCP786L
ADJ
IN
R
1
C
C
out
in
2.2 uF
GND
R
2
Figure 1. Typical Applications
© Semiconductor Components Industries, LLC, 2016
1
Publication Order Number:
March, 2016 − Rev. 0
NCP786L/D
NCP786L
VIN
Thermal
Shutdown
Current
Limit
+
−
VREF
1.27V
+
−
VOUT
GND
ADJ
Figure 2. Simplified Internal Block Diagram
Table 1. PIN FUNCTION DESCRIPTION
Pin No.
(SOT−223)
Pin Name
Description
Supply Voltage Input. Connect 1 mF or 2.2 mF capacitor from VIN to GND.
ADJ pin for output voltage setting via resistors divider.
1
VIN
2
3
ADJ
VOUT
GND
Regulator Output. Connect 2.2 mF or higher MLCC capacitor from VOUT to GND.
4 (Tab)
Ground connection.
Table 2. ABSOLUTE MAXIMUM RATINGS
Rating
Symbol
Value
−0.3 to 700
−0.3 to 18
−0.3 to 5.5
125
Unit
V
Input Voltage (Note 1)
V
IN
Output Voltage
V
OUT
V
Enable Pin Voltage
V
EN
V
Maximum Junction Temperature
Storage Temperature
T
°C
°C
V
J(MAX)
T
STG
−55 to 150
2000
ESD Capability, Human Body Model (All pins except HV pin no.1) (Note 2)
ESD Capability, Machine Model (Note 2)
ESD
HBM
ESD
200
V
MM
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 700 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, SOT−223
R
73
°C/W
q
JA
Thermal Resistance, Junction−to−Air
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2
NCP786L
Table 4. ELECTRICAL CHARACTERISTICS NCP786L Adj. −40°C ≤ T ≤ 85°C; V = 340 V; I
= 100 mA, C = 2.2 mF, C
IN OUT
J
IN
OUT
= 10 mF, unless otherwise noted. Typical values are at T = +25°C. (Note 3)
J
Parameter
Test Conditions
Symbol
Min
Typ
Max
Unit
Operating Input Voltage DC
Maximum output voltage
V
55
450
V
V
IN
−40°C ≤ T ≤ 85°C, Iout = 100 mA,
Voutmax
15
J
55 V ≤ Vin ≤ 450 V
Reference Voltage Accuracy
V
−3%
−5%
1.275
1.275
+3%
+5%
V
V
T = 25°C, Iout = 100 mA, 55 V ≤ Vin ≤ 450 V
J
REF
−40°C ≤ T ≤ 85°C, Iout = 100 mA,
V
REF
J
55 V ≤ Vin ≤ 450 V
Line Regulation
V
= 55 V to 450 V, Iout = 100 mA
Reg
Reg
−0.5
−1.0
6
0.1
+0.5
+1.0
%
%
IN
LINE
Load Regulation
0.1 mA ≤ I
≤ 5 mA, Vin = 55 V
0.66
OUT
LOAD
Maximum Output Current
Quiescent Current
Ground current
55 V ≤ Vin ≤ 450 V, (Note 4)
= 0, 55 V ≤ Vin ≤ 450 V
I
I
mA
mA
mA
OUT
I
10
15
25
OUT
GND
55 V ≤ Vin ≤ 450 V, (Note 4)
0 < I ≤ 5 mA
OUT
ADJ Pin current
150
65
nA
dB
Power Supply Rejection Ratio
Vin = 340 VDC +1 Vpp modulation,
f = 1 kHz
PSRR
Iout = 100 mA
Noise (Note 5)
f = 10 Hz to 100 kHz Vin = 340 VDC, Iout = 1 mA,
= 1.27 V, C = 2.2 mF
V
146
145
10
mVrms
°C
NOISE
V
OUT
OUT
Thermal Shutdown Temperature Temperature increasing from T = +25°C
(Note 5)
T
SD
J
Thermal Shutdown Hysteresis
(Note 5)
Temperature falling from T
T
−
−
°C
SD
SDH
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 T = T =
J
A
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
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3
NCP786L
TYPICAL CHARACTERISTICS
1.279
1.278
1.277
9
8
7
6
5
V
= 1.27 V (OUT = ADJ)
OUTNOM
Cin = 2.2 mF
Cout = 2.2 mF
1.276
1.275
1.274
Vin = 30 V
4
3
2
V
= 1.27 V (OUT = ADJ)
OUTNOM
Vin = 50 V
Vin = 100 V
Vin = 150 V
Vin = 250 V
Vin = 350 V
T = 25°C
A
Cin = 2.2 mF
Cout = 2.2 mF
1.273
1.272
1
0
−40 −20
0
20
40
60
80
100 120
0
50 100 150 200 250 300 350 400 450
INPUT VOLTAGE (V)
TEMPERATURE (°C)
Figure 3. Output Voltage vs. Temperature
Figure 4. Quiescent Current vs. Input Voltage
1.280
1.275
1.270
25
20
15
10
T = 25°C
A
Vin = 350 V
Vin = 50 V
100 V
V
= 15 V
OUTNOM
Iout = 1 mA
Cin = Cout = 2.2 mF
150 V
250 V
350 V
1.265
1.260
5
0
V
= 1.27 V (V
= ADJ)
OUTNOM
OUT
Cin = 2.2 mF
Cout = 2.2 mF
0
1
2
3
4
5
6
7
8
9
10
0.01
0.1
1
10
100
1000
OUTPUT CURRENT (mA)
FREQUENCY (kHz)
Figure 5. Output Voltage vs. Output Current
Figure 6. Output Voltage Noise Density vs.
Frequency
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4
NCP786L
APPLICATION INFORMATION
The typical application circuit for the NCP786L device is shown below.
Vin = (55 – 450) Vdc
Vout = 1.27 V – 15 V / 5 mA
IN
IN
IN
OUT
NCP786L
R
1
C
C
out
in
ADJ
2.2 uF
GND
R
2
Vin = (40 – 320) Vac
Vout = 1.27 V – 15 V / 5 mA
OUT
R
1
NCP786L
C
in
C
out
ADJ
2.2 uF
GND
R
2
Vin = (40 – 320) Vac
Vout = 1.27 V – 15 V / 5 mA
OUT
NCP786L
ADJ
R
1
C
C
out
in
2.2 uF
GND
R
2
Figure 7. Typical Application Schematic
Layout Recommendations
Input Decoupling (C1)
A 1.0 mF capacitor either ceramic or electrolytic is
recommended and should be connected close to the input pin
of NCP786L. Higher value 2.2 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 1 mF could be acceptable for DC
input voltage from 55 V up to 450 V or AC input voltage
235 V 20%. There must be assured minimum Input
Voltage more than 55 V at input pin of NCP786L regulator
in order to keep stable desired output voltage with
guaranteed parameters at AC supply.
Please be sure that the V and GND lines are sufficiently
IN
wide. When the impedance of these lines is high, there is a
chance to pick up a noise or to cause the malfunction of
regulator by induced parasitic signal.
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 NCP786L 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 NCP786L has good
thermal conductivity through the PCB, the junction
temperature will be relatively low with high power
dissipation applications.
Output Decoupling (C2)
The NCP786L 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.
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5
NCP786L
Output Voltage
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 the Equation 1 to:
The output voltage can be set by using a resistor divider
as shown in Figure 1 with a range of 1.27 to 15 V. The
appropriate resistor divider can be found by solving the
equation below.
R1
+ 1.27 ǒ1 )
Ǔ
VOUT
(eq. 2)
R2
R1
R2
ǒ
) IADJ
R1Ǔ
(eq. 1)
+ 1.27 ǒ1 )
Ǔ
VOUT
ORDERING INFORMATION:
Part Number
†
Output Voltage
Case
Package
Marking
Shipping
NCP786LSTADJT3G
ADJ
318E
SOT223−4
RRA
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.
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6
NCP786L
PACKAGE DIMENSIONS
SOT−223 (TO−261)
CASE 318E−04
ISSUE N
D
b1
NOTES:
1. DIMENSIONING AND TOLERANCING PER ASME Y14.5M, 1994.
2. CONTROLLING DIMENSION: INCH.
MILLIMETERS
INCHES
NOM
0.064
0.002
0.030
0.121
0.012
0.256
0.138
0.091
0.037
−−−
4
2
DIM
A
A1
b
b1
c
D
E
e
e1
L
L1
MIN
1.50
0.02
0.60
2.90
0.24
6.30
3.30
2.20
0.85
0.20
1.50
6.70
0°
NOM
1.63
0.06
0.75
3.06
0.29
6.50
3.50
2.30
0.94
−−−
1.75
7.00
−
MAX
MIN
0.060
0.001
0.024
0.115
0.009
0.249
0.130
0.087
0.033
0.008
0.060
0.264
0°
MAX
0.068
0.004
0.035
0.126
0.014
0.263
0.145
0.094
0.041
−−−
H
E
E
1.75
0.10
0.89
3.20
0.35
6.70
3.70
2.40
1.05
−−−
1
3
b
e1
e
2.00
7.30
0.069
0.276
−
0.078
0.287
10°
C
q
H
E
q
A
10°
0.08 (0003)
STYLE 11:
PIN 1. MT 1
2. MT 2
A1
L
L1
3. GATE
4. MT 2
SOLDERING FOOTPRINT
3.8
0.15
2.0
0.079
6.3
0.248
2.3
0.091
2.3
0.091
2.0
0.079
mm
inches
1.5
0.059
ǒ
Ǔ
SCALE 6:1
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NCP786L/D
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