NCS1002ADR2G [ONSEMI]
Constant Voltage / Constant Current SecondarySide Controller;
| 型号： | NCS1002ADR2G |
| 厂家： | 
ONSEMI |
| 描述： | Constant Voltage / Constant Current SecondarySide Controller |
| 文件： | 总9页 (文件大小：101K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NCS1002A
Constant Voltage / Constant
Current SecondarySide
Controller
Description
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MARKING
The NCS1002A is a performance upgrade from the NCS1002
focused on reducing power consumption in applications that require
more efficient operation. It is a highly integrated solution for
Switching Mode Power Supply (SMPS) applications requiring a dual
control loop to perform Constant Voltage (CV) and Constant Current
(CC) regulation. The NCS1002A integrates a 2.5 V voltage reference
and two precision op amps. The voltage reference, along with Op Amp
1, is the core of the voltage control-loop. Op Amp 2 is an independent,
uncommitted amplifier specifically designed for the current control.
Key external components needed to complete the two control loops
are: (a) A resistor divider that senses the output of the power supply
(battery charger) and fixes the voltage regulation set point at the
specified value. (b) A sense resistor that feeds the current sensing
circuit with a voltage proportional to the DC output current. This
resistor determines the current regulation set point and must be
adequately rated in terms of power dissipation. The NCS1002A comes
in a small 8−pin SOIC package and is ideal for space-shrunk
applications such as battery chargers.
DIAGRAMS
8
SOIC−8
D SUFFIX
CASE 751
1002A
8
ALYWG
G
1
1
A
L
Y
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
W
G
(Note: Microdot may be in either location)
PIN CONNECTIONS
V
1
2
3
4
8
7
6
5
Out 1
CC
Features
Out 2
In 2−
In 2+
In 1−
In 1+
• Low Input Offset Voltage: 0.5 mV, Typ
• Input Common-Mode Range includes Ground
• Low Quiescent Current: 75 mA per Op Amp at V = 5 V
GND
CC
• Large Output Voltage Swing
• Wide Power Supply Range: 3 V to 36 V
• High ESD Protection: 2 kV
• This is a Pb−Free Device
(Top View)
1
2
3
8
7
6
V
CC
Output 1
Inputs 1
Typical Applications
-
+
• Battery Chargers
• Switch Mode Power Supplies
Output 2
Inputs 2
+
-
2.5V
4
5
GND
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.
© Semiconductor Components Industries, LLC, 2014
1
Publication Order Number:
June, 2014 − Rev. 5
NCS1002A/D
NCS1002A
MAXIMUM RATINGS
Parameter
Symbol
Rating
36
Unit
V
Supply Voltage (V to GND) (Operating Range V = 3 V to 36 V)
V
CC
CC
CC
Differential Input Voltage
V
id
36
V
Input Voltage
V
−0.3 to +36
2000
V
i
ESD Protection Voltage at Pin
Maximum Junction Temperature
Specification Temperature Range (T
Human Body Model
V
V
ESD
T
J
150
°C
°C
°C
°C
to T
)
T
A
−40 to +105
−55 to +125
−55 to +150
min
max
Operating Free−Air Temperature Range
Storage Temperature Range
T
oper
T
stg
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
THERMAL CHARACTERISTICS
Parameter
Symbol
Rating
Unit
Thermal Resistance
Junction−to−Ambient
R
175
°C/W
q
JA
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NCS1002A
ELECTRICAL CHARACTERISTICS
Symbol
Characteristics
Conditions
Min
Typ
Max
Unit
I
Total Supply Current, excluding current in the Voltage Reference V = 5 V, no
0.15
0.25
mA
CC
CC
load; −40 v T v +105°C
A
I
Total Supply Current, excluding Current in the Voltage Reference V = 30 V, no
0.2
0.3
mA
CC
CC
load; −40 v T v +105°C
A
OP AMP 1 (OP AMP WITH NONINVERTING INPUT CONNECTED TO THE INTERNAL V
)
ref
(V = 5 V, T = 25°C unless otherwise noted)
CC
A
V
IO
Input Offset Voltage
T = 25°C
2.0
3.0
mV
mV
A
−40 v T v +105°C
A
DV
Input Offset Voltage Drift (−40 v T v +105°C)
7.0
20
mV/°C
nA
IO
A
l
IB
Input Bias Current (Inverting Input Only)
150
AVD
Large Signal Voltage Gain (V = 15 V, R = 2 kW,
100
V/mV
CC
L
V
ICM
= 0 V)
PSRR
Power Supply Rejection (V = 5.0 V to 30 V, V
= 2 V)
80
20
100
40
dB
CC
OUT
I
Output Source Current (V = 15 V, V = 2.0 V,
OUT
mA
SOURCE
CC
V
id
= 1 V)
I
Short Circuit to GND (V = 15 V)
40
10
60
mA
mA
O
CC
I
Output Current Sink (V = −1 V)
V
CC
= +15 V, V = 0.2 V
OUT
1
SINK
id
(Note 1)
V
= +15 V, V
= 2 V
OUT
10
26
26
27
27
20
27
mA
V
CC
V
OH
Output Voltage Swing, High (V = 30 V)
R = 2 kW, T = 25°C
CC
L
A
−40 v T v +105°C
A
R = 10 kW, T = 25°C
28
L
A
−40 v T v +105°C
A
V
Output Voltage Swing, Low
R = 10 kW, T = 25°C
5.0
0.4
50
mV
OL
L
A
SR
Slew Rate (AV = +1, V = 0.5 V to 2 V, V = 15 V,
0.2
0.5
V/ms
i
CC
R = 2 kW, C = 100 pF)
L
L
GBP
THD
Gain Bandwidth Product (V = 30 V, AV = +1, (Note 1)
0.9
MHz
%
CC
R = 2 kW, C = 100 pF, f = 100 kHz, V = 10 mV )
L
L
IN
PP
Total Harmonic Distortion (f = 1 kHz, AV = 10,
R = 2 kW, V = 30 V, V = 2 V
0.08
)
PP
L
CC
OUT
OP AMP 2 (INDEPENDENT OP AMP) (V = 5.0 V, T = 25°C unless otherwise noted)
CC
A
V
IO
Input Offset Voltage
T = 25°C
0.5
2.0
3.0
mV
A
−40 v T v +105°C
A
DV
I
Input Offset Voltage Drift (−40 v T v +105°C)
7.0
2.0
mV/°C
IO
A
Input Offset Current
T = 25°C
A
75
nA
IO
−40 v T v +105°C
150
150
200
A
I
Input Bias Current
T = 25°C
A
20
nA
V/mV
dB
B
−40 v T v +105°C
A
AVD
Large Signal Voltage Gain (V = 15 V,
T = 25°C
50
25
80
100
100
CC
A
R = 2 kW, V
= 1.4 V to 11.4 V)
L
OUT
−40 v T v +105°C
A
PSRR
Power Supply Rejection (V = 5 V to 30 V)
CC
1. Guaranteed by design and/or characterization.
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3
NCS1002A
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Characteristics
Conditions
Min
Typ
Max
Unit
OP AMP 2 (INDEPENDENT OP AMP) (continued) (V = 5.0 V, T = 25°C unless otherwise noted)
CC
A
V
ICM
Input Common Mode Voltage Range (Note 2)
(V = +30 V)
CC
T = 25°C
A
0
V
1.5
−
V
CC
−40 v T v +105°C
0
V
2.0
−
A
CC
CMRR
Common Mode Rejection Ratio (Note 4)
0 to V − 1.7 V,
70
60
20
85
dB
CC
T = 25°C
A
0 to V − 2.2 V
CC
−40 v T v +105°C
A
I
Output Current Source (V = 15 V, V
= 2 V, V = +1 V)
40
40
10
20
27
mA
mA
mA
mA
V
SOURCE
CC
OUT
ID
I
O
Short−Circuit to GND (V = 15 V)
60
CC
I
Output Current Sink (V = −1 V)
V
= +15 V, V = 0.2 V
OUT
1
SINK
ID
CC
V
= +15 V, V
= 2 V
10
26
26
27
27
CC
OUT
V
OH
Output Voltage Swing, High (V = 30 V)
R = 2 kW, T = 25°C
CC
L
A
−40 v T v +105°C
A
R = 10 kW, T = 25°C
28
L
A
−40 v T v +105°C
A
V
Output Voltage Swing, Low
R = 10 kW, T = 25°C
5.0
0.4
0.9
50
mV
V/ms
MHz
OL
L
A
SR
Slew Rate (AV = +1, V = 0.5 V to 3 V, V = 15 V, R = 2 kW, C = 100 pF)
0.2
0.5
i
CC
L
L
GBP
Gain Bandwidth Product (V = 30 V, AV = +1,
CC
R = 2 kW, C = 100 pF, f = 100 kHz, V = 10 mV ) (Note 4)
L
L
IN
PP
THD
Total Harmonic Distortion (f = 1 kHz, AV = 10,
R = 2 kW, V = 30 V, V = 2 V
0.08
50
%
)
PP
L
CC
OUT
e
noise
Equivalent Input Noise Voltage (f = 1 kHz, R = 100 W, V = 30 V)
nV/√Hz
S
CC
VOLTAGE REFERENCE (V = 5.0 V, T = 25°C unless otherwise noted)
CC
A
I
Cathode Current
Reference Voltage (I = 1 mA)
0.05
2.49
2.48
100
2.51
2.52
30
mA
V
K
V
ref
T = 25°C
2.5
2.5
7.0
K
A
−40 v T v +105°C
A
DV
Reference Deviation over Temperature (V = V , I = 10 mA, −40 v T v
A
mV
ref
KA
ref
K
+105°C) (Note 4)
I
Minimum Cathode Current for Regulation (2.4875 V ≤ V ≤ 2.5125 V )
10
50
mA
min
f
KA
f
I ZKA I
Dynamic Impedance (Note 3)
(V = V , I = 1 mA to 100 mA, f < 1 kHz)
0.2
0.5
W
KA
ref
K
2. The input common−mode voltage of either input signal should not be allowed to go negative by more than 0.3 V. The upper end of the
common−mode range is V − 1.5 V. Both inputs can go to V + 0.3 V without damage.
CC
CC
3. The Dynamic Impedance is defined as l ZKA l = DV / DI .
KA
K
4. Guaranteed by design and/or characterization.
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4
NCS1002A
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
5
4
3
2
1
0
OP1
−50 −30 −10 10
30
50
70
90
110 130
−40
−20
0
20
40
60
80
100 120
TEMPERATURE (°C)
TEMPERATURE (°C)
Figure 1. Input Offset Voltage vs. Temperature
Figure 2. IB vs. Temperature
2.6
2.58
2.56
2.54
2.52
2.5
2.52
2.51
2.5
2.48
2.46
2.44
2.42
2.4
2.49
2.48
0
10
20 30 40 50 60 70 80 90 100
−40
−20
0
20
40
60
80
100
CATHODE CURRENT IK (mA)
TEMPERATURE (°C)
Figure 3. Vref as a Function of IK
Figure 4. Vref Over Temperature
0.5
0.45
0.4
0.35
0.3
0.25
0.2
−40−30−20−10 0 10 20 30 40 50 60 70 80 90 100
TEMPERATURE (°C)
Figure 5. Ref Dynamic Impedance vs.
Temperature
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5
NCS1002A
120
100
80
60
40
20
0
120
100
80
60
40
20
0
25°C
−40°C
−40°C
25°C
105°C
105°C
0
5
10
15
20
25
30
35
0
5
10
15
20
25
30
35
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
Figure 6. NCS1002A PSRR vs. Supply Voltage
Figure 7. NCS1002A CMRR vs. Supply Voltage
10
V
S
= +/− 15 V
R = 2kW to V
L
EE
A = 10
V
1
0.1
V
25°C
= 2 V
PP
O
THD+N
0.01
0.001
THD
100
1k
FREQUENCY (Hz)
10k
Figure 8. Distortion vs. Frequency
S − Stable; U − Unstable
V
CC
100
U
U
U
U
U
S
S
S
S
S
S
S
S
S
S
U
U
U
U
U
U
U
S
S
S
S
S
S
S
S
U
U
U
U
U
U
U
U
U
U
S
S
S
S
S
U
U
U
U
U
U
U
U
U
U
U
U
S
S
S
U
U
U
U
U
U
U
U
U
U
U
U
U
S
S
S
U
U
U
U
U
U
S
S
S
S
S
S
S
S
S
U
U
U
U
U
S
S
S
S
S
S
S
S
S
S
S
U
U
U
U
U
S
S
S
S
S
S
S
S
S
S
S
S
U
U
U
U
S
S
S
S
S
S
S
S
S
S
S
S
U
U
U
U
S
V
OL
V
OL
V
OH
V
OH
T = 25°C
A
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
50
40
30
20
15
10
7.5
5
2.5
1
0.5
0.25
0.1
0.05
V
V
V
− 0.5
− 1
CC
T = 105°C
A
V
T = 25°C
CC
A
T = 105°C
A
− 1.5
CC
V
− 2
CC
− 2.5
CC
GND + 2
GND + 1.5
GND + 1
GND + 0.5
GND
0
0.1 0.47
1
4.7 47 100 200 300 1000
0
5
10
15
20
25
30
35
40
45
OUTPUT CURRENT (mA)
CAPACITIVE LOAD ON Vref PIN 3 (nF)
Figure 9. Output Voltage Swing vs. Output Current
id = 1 V, VCM = 0 V, VCC = 3 V to 36 V
Figure 10. Region of Reference Stability vs.
Capacitive Load (Pin 3)
V
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6
NCS1002A
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7
NCS1002A
ORDERING INFORMATION
Device
†
Package
Shipping
NCS1002ADR2G
SOIC−8
(Pb−Free)
2500 / 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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8
NCS1002A
PACKAGE DIMENSIONS
SOIC−8 NB
CASE 751−07
ISSUE AK
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSION A AND B DO NOT INCLUDE
MOLD PROTRUSION.
−X−
A
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
8
5
4
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
6. 751−01 THRU 751−06 ARE OBSOLETE. NEW
STANDARD IS 751−07.
S
M
M
B
0.25 (0.010)
Y
1
K
−Y−
MILLIMETERS
DIM MIN MAX
INCHES
G
MIN
MAX
0.197
0.157
0.069
0.020
A
B
C
D
G
H
J
K
M
N
S
4.80
3.80
1.35
0.33
5.00 0.189
4.00 0.150
1.75 0.053
0.51 0.013
C
N X 45
_
SEATING
PLANE
1.27 BSC
0.050 BSC
−Z−
0.10
0.19
0.40
0
0.25 0.004
0.25 0.007
1.27 0.016
0.010
0.010
0.050
8
0.020
0.244
0.10 (0.004)
M
J
H
D
8
0
_
_
_
_
0.25
5.80
0.50 0.010
6.20 0.228
M
S
S
X
0.25 (0.010)
Z
Y
SOLDERING FOOTPRINT*
1.52
0.060
7.0
4.0
0.275
0.155
0.6
0.024
1.270
0.050
mm
inches
ǒ
Ǔ
SCALE 6:1
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
ON Semiconductor and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks,
copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. SCILLC
reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any
particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without
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
and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC
does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for
surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where
personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and
its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly,
any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture
of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT:
N. American Technical Support: 800−282−9855 Toll Free
USA/Canada
Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
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Phone: 81−3−5817−1050
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Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada
Email: orderlit@onsemi.com
For additional information, please contact your local
Sales Representative
NCS1002A/D
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