ON NCP785BST33T3G Wide input voltage range psrr linear regulator Datasheet

NCP785B
Product Preview
Wide Input Voltage Range
10mA Ultra-Low Iq, High
PSRR Linear Regulator with
Enable Pin
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MARKING
DIAGRAMS
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.
4
(Top View)
A
Y
W
XXXXX
G
Features
• Wide Input Voltage Range:
•
•
•
•
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AYW
XXXXXG
G
1
2
3
SOT−223
S SUFFIX
CASE 318E
= Assembly Location
= Year
= Work Week
= Specific Device Code
= Pb−Free Package
(Note: Microdot may be in either location)
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
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
Typical Applications
• Industrial Applications, Home Appliances
• Home Metering / Network Application
• Off−line Power Supplies
VIN
15 V − 450 V
CIN
2.2 μF
VIN
EN
VOUT
VOUT
NCP785B
COUT
GND
22 μF
VIN
85 VAC − 260 VAC
3.3 V, 5 V,
12 V, 15 V
CIN
2.2 μF/
450 V
VOUT
VOUT
NCP785B
EN
GND
COUT
3.3 V, 5 V,
12 V, 15 V
22 μF
VEN
VEN
OFF
VIN
ON
OFF
ON
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
NCP785B
VIN
EN
ENB
Current
Limit
VREF
1.25 V
+
−
EN
ENB
+
−
VOUT
Thermal
Shutdown
EN
EN
GND
NCP785B
Figure 2. Simplified Internal Block Diagram
Table 1. PIN FUNCTION DESCRIPTION
Pin No.
(SOT−223)
Pin Name
1
VIN
Supply Voltage Input. Connect 1 mF capacitor from VIN to GND.
2
EN
Enable pin. Allows to turn−on/off the Regulator’s output voltage. Pulling the EN pin low turns−off the
NCP785B. Releasing the EN pin allows the internal pull−up to turn−on the Regulator. This pin should
be driven by an open collector output.
3
VOUT
Regulator Output. Connect 10 mF or higher MLCC capacitor from VOUT to GND.
4 (Tab)
GND
Ground connection.
Description
Table 2. ABSOLUTE MAXIMUM RATINGS
Rating
Symbol
Value
Unit
VIN
−0.3 to 700
V
Output Voltage
VOUT
−0.3 to 18
V
Enable Pin Voltage
VEN
−0.3 to 5.5
V
TJ(MAX)
150
°C
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
Input Voltage (Note 1)
Maximum Junction Temperature
Storage Temperature
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
Thermal Characteristics, SOT−223
Thermal Resistance, Junction−to−Air
Symbol
Value
Unit
RqJA
73
°C/W
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NCP785B
Table 4. ELECTRICAL CHARACTERISTICS, VOUT = 3.3 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 3)
Parameter
Test Conditions
Symbol
Min
VIN
23
TJ = 25°C, Iout = 100 mA, 23 V ≤ Vin ≤ 450 V
VOUT
3.1515
−40°C ≤ TJ ≤ 85°C, Iout = 100 mA,
23 V ≤ Vin ≤ 450 V
VOUT
Line Regulation
23 V ≤ Vin ≤ 450 V, Iout = 100 mA
Load Regulation
100 mA ≤ IOUT ≤ 10 mA, Vin = 23 V
Maximum Output Current (Note 4)
23 V ≤ Vin ≤ 450 V
Quiescent Current
IOUT = 0, 23 V ≤ Vin ≤ 450 V
Ground Current (Note 4)
23 V ≤ Vin ≤ 450 V
0 < IOUT ≤ 10 mA
EN Pin High Threshold
EN Pin Low Threshold
VEN Voltage increasing
VEN Voltage decreasing
EN Pin Pull up Current (Note 5)
Vin = 450 VDC
IEN
5
EN Pin Voltage (Note 6)
Vin = 450 VDC
VEN
3.0
Power Supply Rejection Ratio
Vin = 340 VDC +1 Vpp
modulation, Iout = 100 mA
PSRR
70
dB
Output Noise
f = 10 kHz to 100 kHz
Vin = 340 VDC, Iout = 100 mA
VNOISE
280
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
Operating Input Voltage DC
Output Voltage Accuracy
Max
Unit
450
V
3.3
3.4485
V
3.135
3.3
3.465
V
RegLINE
−0.5
0.2
+0.5
%
RegLOAD
−1.0
0.6
+1.0
%
IOUT
11.5
IQ
Typ
mA
15
IGND
VEN_HI
VEN_LO
f = 1 kHz
1.4
−
26
mA
27
mA
0.8
10
V
mA
3.3
−
V
°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. 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
6. 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.
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NCP785B
Table 5. ELECTRICAL CHARACTERISTICS, VOUT = 5.0 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 7)
Parameter
Test Conditions
Symbol
Min
VIN
24
TJ = 25°C, Iout = 100 mA, 24 V ≤ Vin ≤ 450 V
VOUT
4.775
−40°C ≤ TJ ≤ 85°C, Iout = 100 mA,
24 V ≤ Vin ≤ 450 V
VOUT
Line Regulation
35 V ≤ Vin ≤ 450 V, Iout = 100 mA
Load Regulation
100 mA ≤ IOUT ≤ 10 mA, Vin = 35 V
Maximum Output Current (Note 8)
24 V ≤ Vin ≤ 450 V
Quiescent Current
IOUT = 0, 24 V ≤ Vin ≤ 450 V
Ground Current (Note 8)
24 V ≤ Vin ≤ 450 V
0 < IOUT ≤ 10 mA
EN Pin High Threshold
EN Pin Low Threshold
VEN Voltage increasing
VEN Voltage decreasing
EN Pin Pull up Current (Note 9)
Vin = 450 VDC
IEN
5
EN Pin Voltage (Note 10)
Vin = 450 VDC
VEN
3.0
Power Supply Rejection Ratio
Vin = 340 VDC +1 Vpp
modulation, Iout = 100 mA
PSRR
70
dB
Output Noise
f = 10 kHz to 100 kHz
Vin = 340 VDC, Iout = 100 mA
VNOISE
280
mVrms
Thermal Shutdown Temperature
(Note 9)
Temperature increasing from TJ = +25°C
TSD
145
°C
Thermal Shutdown Hysteresis
(Note 9)
Temperature falling from TSD
TSDH
Operating Input Voltage DC
Output Voltage Accuracy
Max
Unit
450
V
5.0
5.225
V
4.75
5.0
5.25
V
RegLINE
−0.5
0.2
+0.5
%
RegLOAD
−1.0
0.62
+1.0
%
IOUT
12.7
IQ
Typ
mA
15
IGND
VEN_HI
VEN_LO
f = 1 kHz
1.4
−
26
mA
27
mA
0.8
10
V
mA
3.3
−
V
°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.
7. 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.
8. A proper heatsinking and/or low duty cycle pulse techniques are used to operate the device within the Safe Operating Area.
9. Guaranteed by design
10. 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.
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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
VIN
35
TJ = 25°C, Iout = 100 mA, 35 V ≤ Vin ≤ 450 V
VOUT
11.46
−40°C ≤ TJ ≤ 85°C, Iout = 100 mA,
35 V ≤ Vin ≤ 450 V
VOUT
Line Regulation
35 V ≤ Vin ≤ 450 V, Iout = 100 mA
Load Regulation
100 mA ≤ IOUT ≤ 10 mA, Vin = 35 V
Maximum Output Current (Note 12)
38 V ≤ Vin ≤ 450 V
Quiescent Current
IOUT = 0, 35 V ≤ Vin ≤ 450 V
Ground Current (Note 12)
35 V ≤ Vin ≤ 450 V
0 < IOUT ≤ 10 mA
EN Pin High Threshold
EN Pin Low Threshold
VEN Voltage increasing
VEN Voltage decreasing
EN Pin Pull up Current (Note 13)
Vin = 450 VDC
IEN
5
EN Pin Voltage (Note 14)
Vin = 450 VDC
VEN
3.0
Power Supply Rejection Ratio
Vin = 340 VDC +1 Vpp
modulation, Iout = 100 mA
PSRR
70
dB
Output Noise
f = 10 kHz to 100 kHz
Vin = 340 VDC, Iout = 100 mA
VNOISE
280
mVrms
Thermal Shutdown Temperature
(Note 13)
Temperature increasing from TJ = +25°C
TSD
145
°C
Thermal Shutdown Hysteresis
(Note 13)
Temperature falling from TSD
TSDH
Operating Input Voltage DC
Output Voltage Accuracy
Max
Unit
450
V
12
12.54
V
11.4
12
12.6
V
RegLINE
−0.5
0.1
+0.5
%/V
RegLOAD
−1.0
0.66
+1.0
%
IOUT
11.5
IQ
Typ
mA
12
IGND
VEN_HI
VEN_LO
f = 1 kHz
1.4
−
18
mA
19
mA
0.8
10
V
mA
3.3
−
V
°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.
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NCP785B
Table 7. ELECTRICAL CHARACTERISTICS, VOUT = 15 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 15)
Parameter
Test Conditions
Symbol
Min
VIN
38
TJ = 25°C, Iout = 100 mA, 38 V ≤ Vin ≤ 450 V
VOUT
14.325
−40°C ≤ TJ ≤ 85°C, Iout = 100 mA,
38 V ≤ Vin ≤ 450 V
VOUT
Line Regulation
38 V ≤ Vin ≤ 450 V, Iout = 100 mA
Load Regulation
100 mA ≤ IOUT ≤ 10 mA, Vin = 38 V
Maximum Output Current (Note 16)
38 V ≤ Vin ≤ 450 V
Quiescent Current
IOUT = 0, 38 V ≤ Vin ≤ 450 V
Ground Current (Note 16)
38 V ≤ Vin ≤ 450 V
0 < IOUT ≤ 10 mA
EN Pin High Threshold
EN Pin Low Threshold
VEN Voltage increasing
VEN Voltage decreasing
EN Pin Pull up Current (Note 17)
Vin = 450 VDC
IEN
5
EN Pin Voltage (Note 18)
Vin = 450 VDC
VEN
3.0
Power Supply Rejection Ratio
Vin = 340 VDC +1 Vpp
modulation, Iout = 100 mA
PSRR
70
dB
Output Noise
f = 10 kHz to 100 kHz
Vin = 340 VDC, Iout = 100 mA
VNOISE
280
mVrms
Thermal Shutdown Temperature
(Note 17)
Temperature increasing from TJ = +25°C
TSD
145
°C
Thermal Shutdown Hysteresis
(Note 17)
Temperature falling from TSD
TSDH
Operating Input Voltage DC
Output Voltage Accuracy
Max
Unit
450
V
15
15.675
V
14.25
15
15.75
V
RegLINE
−0.5
0.1
+0.5
%
RegLOAD
−1.0
0.66
+1.0
%
IOUT
11
IQ
Typ
mA
17
IGND
VEN_HI
VEN_LO
f = 1 kHz
1.4
−
27
mA
28
mA
0.8
10
V
mA
3.3
−
V
°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.
15. 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.
16. A proper heatsinking and/or low duty cycle pulse techniques are used to operate the device within the Safe Operating Area.
17. Guaranteed by design
18. 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.
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NCP785B
APPLICATION INFORMATION
The typical application circuit for the NCP785B device is shown below.
VIN
15V – 450V
VIN
VOUT
NCP785B
EN
GND
CIN
2.2μF
OFF
ON
VOUT
3.3V, 5V, 12V, 15V
COUT
22μF
VEN
Figure 3. Typical Application Schematic
Input Decoupling (C1)
A 1 mF capacitor either ceramic or electrolytic is
recommended and should be connected close to the input pin
of NCP785B. 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.
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 NCP785B has good
thermal conductivity through the PCB, the junction
temperature will be relatively low with high power
dissipation applications.
Output Decoupling (C2)
ENABLE Operation
The NCP785B 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 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.
The enable pin EN of the NCP785B will turn on or off the
regulator’s output. The threshold limits are covered in the
electrical specification section of this data sheet. If the
enable function is not used then the EN pin should be left
disconnected. An internal current source pulls this pin high
to a voltage given by the internal resistor divider. The limit
of this voltage is mentioned in the electrical specification
section of this data sheet. Maximum applicable external
voltage at this pin from external source is limited to 5.0 V.
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.
VIN
EN
5 mA
Thermal
EN
As power across the NCP785B increases, it might become
necessary to provide some thermal relief. The maximum
power dissipation supported by the device is dependent
500 kW
EN
VREF
1.25 V
+
−
Thermal
Shutdown
5.3 V
600 kW
EN
NCP785B
ORDERING INFORMATION:
Part Number
Output
Voltage
Case
Package
Marking
Shiping
Released PN
Marking
NCP785BST33T3G
3.3 V
TBD
SOT223−4
HVH
TBD
PCP785BST33T3G
XAH
NCP785BST50T3G
5V
TBD
SOT223−4
HVJ
TBD
PCP785BST50T3G
XAJ
NCP785BST120T3G
12 V
TBD
SOT223−4
HVK
TBD
PCP785BST120T3G
XAK
NCP785BST150T3G
15 V
TBD
SOT223−4
HVL
TBD
PCP785BST150T3G
XAL
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NCP785B
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.
4
HE
1
2
3
b
e1
e
A1
C
q
A
0.08 (0003)
DIM
A
A1
b
b1
c
D
E
e
e1
L
L1
HE
E
q
L
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°
MILLIMETERS
NOM
MAX
1.63
1.75
0.06
0.10
0.75
0.89
3.06
3.20
0.29
0.35
6.50
6.70
3.50
3.70
2.30
2.40
0.94
1.05
−−−
−−−
1.75
2.00
7.00
7.30
10°
−
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°
INCHES
NOM
0.064
0.002
0.030
0.121
0.012
0.256
0.138
0.091
0.037
−−−
0.069
0.276
−
MAX
0.068
0.004
0.035
0.126
0.014
0.263
0.145
0.094
0.041
−−−
0.078
0.287
10°
STYLE 11:
PIN 1. MT 1
2. MT 2
3. GATE
4. MT 2
L1
SOLDERING FOOTPRINT
3.8
0.15
2.0
0.079
2.3
0.091
2.3
0.091
6.3
0.248
2.0
0.079
1.5
0.059
SCALE 6:1
mm Ǔ
ǒinches
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limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications
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NCP785B/D