NCP785
Product Preview
Wide Input Voltage Range
5 mA Ultra-Low Iq, High
PSRR Linear Regulator
The NCP785 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 5 mA.
Ideal for high input voltage applications such as industrial and home
metering, home appliances. The NCP785 family offers
±5%
initial
accuracy, extremely high−power supply rejection ratio and ultra−low
quiescent current. The NCP785 family is optimized for high−voltage
line and load transients, making them ideal for harsh environment
applications.
The NCP785 is offered in fixed output voltage options 3.3 V and
5.0 V.
SOT−223 and SOT−89 packages offer good thermal performance
and help to minimize the overall solution size.
Features
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MARKING
DIAGRAMS
4
SOT−223
S SUFFIX
CASE 318E
AYW
XXXXXG
G
1
2
3
•
Wide Input Voltage Range:
•
•
•
•
•
•
•
•
DC: Up to 450 V
AC: 85 V to 260 V (half−wave rectifier and 2.2
mF
capacitor)
5 mA Guaranteed Output Current
Ultra Low Quiescent Current: Typ. 6
mA
(V
OUT
≤
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 SOT89−3, SOT−223 Packages
This is a Pb−Free Device
SOT−89
H SUFFIX
CASE 1213
Tab
AYW
XXXXXG
G
1
3
2
(Top Views)
(Tab is connected to Pin 2)
= Assembly Location
= Year
= Work Week
= Specific Device Code
= Pb−Free Package
A
Y
W
XXXXX
G
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 4 of this data sheet.
Typical Applications
•
Industrial Applications, Home Appliances
•
Home Metering / Network Application
•
Off−line Power Supplies
V
IN
15 V − 450 V
V
IN
C
IN
2.2
μF
V
OUT
3.3 V, 5 V
C
OUT
22
μF
V
IN
85 VAC − 260 VAC
V
IN
C
IN
2.2
μF/
450 V
V
OUT
NCP785
GND
C
OUT
22
μF
V
OUT
3.3 V, 5 V
V
OUT
NCP785
GND
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, 2015
1
March, 2015 − Rev. P1
Publication Order Number:
NCP785/D
NCP785
VIN
ENB
ENB
Current
Limit
ENB
+
−
ENB
+
−
V
REF
1.25 V
VOUT
Thermal
Shutdown
NCP785
GND
Figure 2. Simplified Internal Block Diagram
Table 1. PIN FUNCTION DESCRIPTION
Pin No.
(SOT−223)
1
2
3
4
Pin No.
(SOT89−3)
1
−
3
2,4
Pin Name
VIN
NC
VOUT
GND
Description
Supply Voltage Input. Connect 2.2
mF
capacitor from VIN to GND.
This pin is not internally connected to the IC
Regulator Output. Connect 22
mF
or larger MLCC capacitor from VOUT to GND.
Ground connection.
Table 2. PIN ASSIGNMENT
Pin No:
1
2
3
4
Tab
SOT223
VIN
N/C
VOUT
GND
It is recommended that the Tab is connected to the
ground plane on the PCB or otherwise is left open.
SOT89−3
VIN
GND
VOUT
−
GND
Table 3. ABSOLUTE MAXIMUM RATINGS
Rating
Input Voltage (Note 1)
Output Voltage
Maximum Junction Temperature
Storage Temperature
ESD Capability, Human Body Model (All pins except HV pin no.1) (Note 2)
ESD Capability, Machine Model (Note 2)
Symbol
V
IN
V
OUT
T
J(MAX)
T
STG
ESD
HBM
ESD
MM
Value
−0.3 to 700
−0.3 to 18
150
−55 to 150
2000
200
Unit
V
V
°C
°C
V
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 4. THERMAL CHARACTERISTICS
Rating
Thermal Characteristics, SOT−223
Thermal Resistance, Junction−to−Air
Thermal Characteristics, SOT89−3
Thermal Resistance, Junction−to−Air
Symbol
R
qJA
R
qJA
Value
73
79
Unit
°C/W
°C/W
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2
NCP785
Table 5. ELECTRICAL CHARACTERISTICS, V
OUT
= 3.3 V
(−40°C
≤
T
J
≤
85°C; V
IN
= 340 V; I
OUT
= 100
mA,
C
IN
= 1
mF,
C
OUT
= 22
mF,
unless otherwise noted. Typical values are at T
J
= +25°C.) (Note 3)
Parameter
Operating Input Voltage DC
Output Voltage Accuracy
T
J
= 25°C, Iout = 100
mA,
14 V
≤
Vin
≤
450 V
−40°C
≤
T
J
≤
85°C, Iout = 100
mA,
14 V
≤
Vin
≤
450 V
Line Regulation
Load Regulation
Maximum Output Current (Note 4)
Quiescent Current
Ground Current (Note 4)
Power Supply Rejection Ratio
Noise
Thermal Shutdown Temperature
(Note 5)
Thermal Shutdown Hysteresis
(Note 5)
14 V
≤
Vin
≤
450 V, Iout = 100
mA
100
mA
≤
I
OUT
≤
6 mA, Vin = 14 V
14 V
≤
Vin
≤
450 V
I
OUT
= 0, 14 V
≤
Vin
≤
450 V
14 V
≤
Vin
≤
450 V
0 < I
OUT
≤
5 mA
Vin = 340 V
DC
+1 Vpp
modulation, Iout = 100
mA
f = 10 kHz to 100 kHz
Vin = 340 V
DC
, Iout = 100
mA
Temperature increasing from T
J
= +25°C
Temperature falling from T
SD
f = 1 kHz
Test Conditions
Symbol
V
IN
V
OUT
V
OUT
Reg
LINE
Reg
LOAD
I
OUT
I
Q
I
GND
PSRR
V
NOISE
T
SD
T
SDH
−
70
280
145
10
−
Min
14
3.1515
3.135
−0.5
−0.5
6.8
5.7
8.4
8.5
3.3
3.3
0.2
0.37
Typ
Max
450
3.4485
3.465
+0.5
+0.5
Unit
V
V
V
%
%
mA
mA
mA
dB
mVrms
°C
°C
Table 6. ELECTRICAL CHARACTERISTICS, V
OUT
= 5.0 V
(−40°C
≤
T
J
≤
85°C; V
IN
= 340 V; I
OUT
= 100
mA,
C
IN
= 1
mF,
C
OUT
= 22
mF,
unless otherwise noted. Typical values are at T
J
= +25°C.) (Note 3)
Parameter
Operating Input Voltage DC
Output Voltage Accuracy
T
J
= 25°C, Iout = 100
mA,
16 V
≤
Vin
≤
450 V
−40°C
≤
T
J
≤
85°C, Iout = 100
mA,
16 V
≤
Vin
≤
450 V
Line Regulation
Load Regulation
Maximum Output Current (Note 4)
Quiescent Current
Ground Current (Note 4)
Power Supply Rejection Ratio
Noise
Thermal Shutdown Temperature
(Note 5)
Thermal Shutdown Hysteresis
(Note 5)
16 V
≤
Vin
≤
450 V, Iout = 100
mA
100
mA
≤
I
OUT
≤
3.3 mA, Vin = 16 V
16 V
≤
Vin
≤
450 V
I
OUT
= 0, 16 V
≤
Vin
≤
450 V
16 V
≤
Vin
≤
450 V
0 < I
OUT
≤
3.3 mA
Vin = 340 V
DC
+1 Vpp
modulation, Iout = 100
mA
f = 10 kHz to 100 kHz
Vin = 340 V
DC
, Iout = 100
mA
Temperature increasing from T
J
= +25°C
Temperature falling from T
SD
f = 1 kHz
Test Conditions
Symbol
V
IN
V
OUT
V
OUT
Reg
LINE
Reg
LOAD
I
OUT
I
Q
I
GND
PSRR
V
NOISE
T
SD
T
SDH
−
70
280
145
10
−
Min
16
4.775
4.75
−0.5
−0.5
3.3
5.7
8.4
8.5
5.0
5.0
0.2
0.38
Typ
Max
450
5.225
5.25
+0.5
+0.5
Unit
V
V
V
%
%
mA
mA
mA
dB
mVrms
°C
°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 T
J
= T
A
=
25°C. Low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible.
4. A proper heatsinking and/or low duty cycle pulse techniques are used to operate the device within the Safe Operating Area.
5. Guaranteed by design
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3
NCP785
APPLICATION INFORMATION
The typical application circuit for the NCP785 device is shown below.
V
IN
15V – 450V
V
OUT
3.3V, 5V
V
IN
C
IN
2.2μF
V
OUT
NCP785
GND
C
OUT
22μF
Input Decoupling (C1)
Layout Recommendations
A 1
mF
capacitor either ceramic or electrolytic is
recommended and should be connected close to the input pin
of NCP785. 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.
Output Decoupling (C2)
Please be sure the V
IN
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
The NCP785 is a stable Regulator and 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
22
mF.
The regulator accepts ceramic chip capacitors as well
as tantalum devices or low ESR electrolytic capacitors.
Larger values improve noise rejection and load transient
response.
As power across the NCP785 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 NCP785 has good
thermal conductivity through the PCB, the junction
temperature will be relatively low with high power
dissipation applications.
ORDERING INFORMATION:
Part Number
NCP785H33T1G
NCP785H50T1G
NCP785ST33T3G
NCP785ST50T3G
Output Voltage
3.3 V
5V
3.3 V
5V
Case
TBD
TBD
TBD
TBD
Package
SOT89−3
SOT89−3
SOT223−4
SOT223−4
Marking
TBD
TBD
HVA
HVC
Shipping
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4
NCP785
PACKAGE DIMENSIONS
SOT−89 (3−LEAD)
CASE 1213−02
ISSUE C
−A−
F
C
J
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETERS
3. 1213-01 OBSOLETE, NEW STANDARD 1213-02.
MILLIMETERS
MIN
MAX
4.40
4.60
2.40
2.60
1.40
1.60
0.37
0.57
0.32
0.52
1.50
1.83
1.50 BSC
3.00 BSC
0.30
0.50
0.80
---
---
4.25
INCHES
MIN
MAX
0.173
0.181
0.094
0.102
0.055
0.063
0.015
0.022
0.013
0.020
0.059
0.072
0.059 BSC
0.118 BSC
0.012
0.020
0.031
---
---
0.167
L
K
D
−B−
0.10
E
G
H
2 PL
M
T B
S
A
S
−T−
SEATING
PLANE
DIM
A
B
C
D
E
F
G
H
J
K
L
0.10
M
T B
S
A
S
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