HA17431FPA-E [RENESAS]
1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.495V, PDSO8, 4.40 X 4.85 MM, 1.27 MM PITCH, PLASTIC, SOP-8;
| 型号： | HA17431FPA-E |
| 厂家： | 
RENESAS TECHNOLOGY CORP |
| 描述： | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.495V, PDSO8, 4.40 X 4.85 MM, 1.27 MM PITCH, PLASTIC, SOP-8 光电二极管 输出元件 |
| 文件： | 总22页 (文件大小：261K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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Old Company Name in Catalogs and Other Documents
On April 1st, 2010, NEC Electronics Corporation merged with Renesas Technology
Corporation, and Renesas Electronics Corporation took over all the business of both
companies. Therefore, although the old company name remains in this document, it is a valid
Renesas Electronics document. We appreciate your understanding.
Renesas Electronics website: http://www.renesas.com
April 1st, 2010
Renesas Electronics Corporation
Issued by: Renesas Electronics Corporation (http://www.renesas.com)
Send any inquiries to http://www.renesas.com/inquiry.
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1.
2.
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subject to change without any prior notice. Before purchasing or using any Renesas Electronics products listed herein, please
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HA17431 Series
Shunt Regulator
REJ03D0678-0300
Rev.3.00
Apr 03, 2007
Description
The HA17431 series is temperature-compensated variable shunt regulators. The main application of these products is in
voltage regulators that provide a variable output voltage. The on-chip high-precision reference voltage source can
provide ±1% accuracy in the V versions, which have a VKA max of 16 volts. The HA17431VLP, which is provided in
the MPAK-5V package, is designed for use in switching mode power supplies. It provides a built-in photocoupler
bypass resistor for the PS pin, and an error amplifier can be easily constructed on the supply side.
Features
•
•
•
•
The V versions provide 2.500 V ±1% at Ta = 25°C
The HA17431VLP includes a photocoupler bypass resistor (2 kΩ)
The reference voltage has a low temperature coefficient
The MPAK-5V(5-pin), MPAKV(3-pin) and UPAKV miniature packages are optimal for use on high mounting
density circuit boards
Block Diagram
K
PS*
2kΩ
+
REF
−
A
Note: * The PS pin is only provided by the HA17431VLP.
Application Circuit Example
Switching power supply secondary-side error amplification circuit
Vout
R
R1
+
–
K
A
PS
2kΩ
REF
R2
GND
HA17431VLP
REJ03D0678-0300 Rev.3.00 Apr 03, 2007
Page 1 of 19
HA17431 Series
Ordering Information
Reference voltage (at 25°C)
Normal Version
A Version
±2.2%
V Version
±4%
±1%
Operating
Temperature
Range
2.395V to
2.495V to
2.595V
2.440V to
2.495V to
2.550V
2.475V to
2.500V to
2.525V
Package Code
(Package Name)
Item
PRSP0008DE-B
(FP-8DGV)
HA17431FP
O
PRSP0008DE-B
HA17431FPA
HA17431P
O
(FP-8DGV)
PRSS0003DC-A
(TO-92MODV)
O
PRSS0003DC-A
HA17431PA
HA17431PNA
O
O
(TO-92MODV)
PRSS0003DA-A
(TO-92V)
Industrial
HA17431VLP
use
PLSP0005ZB-A
–20 to +85°C
O
O
O
O
O
O
(MPAK-5V)
PRSS0003DA-A
(TO-92V)
HA17431VP
PLZZ0004CA-A
HA17431VUP
HA17432VUP
HA17431VLTP
HA17432VLTP
(UPAKV)
PLZZ0004CA-A
(UPAKV)
PLSP0003ZB-A
(MPAKV)
PLSP0003ZB-A
(MPAKV)
PLZZ0004CA-A
HA17431UA
Commercial
O
O
(UPAKV)
–20 to +85°C
use
PLZZ0004CA-A
(UPAKV)
HA17432UA
REJ03D0678-0300 Rev.3.00 Apr 03, 2007
Page 2 of 19
HA17431 Series
Pin Arrangement
MPAK-5V
MPAKV
(HA17431VLTP)
MPAKV
(HA17432VLTP)
UPAKV
(HA17431UA/VUP)
A
UPAKV
(HA17432UA/VUP)
A
NC
PS
A
3
A
3
5
4
1
2
3
1
2
1
2
1
REF
2
3
1
2
3
REF
REF A
K
REF
K
K
REF
A
K
K
A
FP-8DGV
TO-92V
TO-92MODV
Mark side
REF NC
7
A
6
NC
5
8
Mark side
1
2
3
1
2
3
1
K
2
3
NC NC NC
4
REF A
K
REF A
K
REJ03D0678-0300 Rev.3.00 Apr 03, 2007
Page 3 of 19
HA17431 Series
Absolute Maximum Ratings
(Ta = 25°C)
Ratings
Item
Cathode voltage
PS term. voltage
Continuous cathode current
Reference input current
Power dissipation
Symbol
VKA
VPS
IK
Iref
Unit Notes
HA17431VLP
16
VKA to 16
–50 to +50
–0.05 to +10
150 *4
HA17431VP
16
V
V
1
1,2,3
—
–50 to +50
–0.05 to +10
500 *5
mA
mA
mW 4, 5
PT
Operating temperature range
Storage temperature
Topr
Tstg
–20 to +85
–55 to +150
–20 to +85
–55 to +150
°C
°C
Ratings
Item
Symbol
VKA
VPS
Unit Notes
HA17431VUP/HA17432VUP
HA17431VLTP/HA17432VLTP
Cathode voltage
PS term. voltage
16
—
16
—
V
V
1
1,2,3
Continuous cathode current
Reference input current
Power dissipation
IK
Iref
PT
–50 to +50
–0.05 to +10
800 *8
–50 to +50
–0.05 to +10
150 *4
mA
mA
mW 4, 8
Operating temperature range
Storage temperature
Topr
Tstg
–20 to +85
–55 to +150
–20 to +85
–55 to +150
°C
°C
Ratings
Item
Symbol
VKA
Unit Notes
HA17431PNA
40
HA17431P/PA
40
Cathode voltage
V
1
Continuous cathode current
Reference input current
Power dissipation
IK
Iref
PT
–100 to +150
–0.05 to +10
500 *5
–100 to +150
–0.05 to +10
800 *6
mA
mA
mW 5, 6
Operating temperature range
Storage temperature
Topr
Tstg
–20 to +85
–55 to +150
–20 to +85
–55 to +150
°C
°C
Ratings
Item
Symbol
VKA
Unit Notes
HA17431FP/FPA
40
HA17431UA/HA17432UA
40
Cathode voltage
V
1
Continuous cathode current
Reference input current
Power dissipation
IK
Iref
PT
–100 to +150
–0.05 to +10
500 *7
–100 to +150
–0.05 to +10
800 *8
mA
mA
mW 7, 8
Operating temperature range
Storage temperature
Topr
Tstg
–20 to +85
–55 to +125
–20 to +85
–55 to +150
°C
°C
Notes: 1. Voltages are referenced to anode.
2. The PS pin is only provided by the HA17431VLP.
3. The PS pin voltage must not fall below the cathode voltage. If the PS pin is not used, the PS pin is
recommended to be connected with the cathode.
4. Ta ≤ 25°C. If Ta > 25°C, derate by 1.2 mW/°C.
5. Ta ≤ 25°C. If Ta > 25°C, derate by 4.0 mW/°C.
6. Ta ≤ 25°C. If Ta > 25°C, derate by 6.4 mW/°C.
7. 50 mm × 50 mm × 1.5mmt glass epoxy board (5% wiring density), Ta ≤ 25°C. If Ta > 25°C, derate by 5
mW/°C.
8. 15 mm × 25 mm × 0.7mmt alumina ceramic board,Ta ≤ 25°C. If Ta > 25°C, derate by 6.4 mW/°C.
REJ03D0678-0300 Rev.3.00 Apr 03, 2007
Page 4 of 19
HA17431 Series
Electrical Characteristics
HA17431VLP/VP/VUP/VLTP, HA17432VUP/VLTP
(Ta = 25°C, IK = 10 mA)
Test Conditions Notes
Item
Symbol
Vref
Min
Typ
Max
Unit
V
Reference voltage
2.475 2.500 2.525
VKA = Vref
Reference voltage
Vref(dev)
—
—
10
—
—
mV
VKA = Vref,
1
temperature deviation
Ta = –20°C to +85°C
Reference voltage
temperature coefficient
∆Vref/∆Ta
±30
ppm/°C VKA = Vref,
0°C to 50°C gradient
Reference voltage regulation
Reference input current
Reference current
temperature
deviation
∆Vref/∆VKA
Iref
Iref(dev)
—
—
—
2.0
2
0.5
3.7
6
—
mV/V
µA
µA
VKA = Vref to 16 V
R1 = 10 kΩ, R2 = ∞
R1 = 10 kΩ, R2 = ∞,
Ta = –20°C to +85°C
Minimum cathode current
Off state cathode current
Dynamic impedance
Imin
Ioff
ZKA
—
—
—
0.4
0.001
0.2
1.0
1.0
0.5
mA
µA
Ω
VKA = Vref
VKA = 16 V, Vref = 0 V
VKA = Vref,
IK = 1 mA to 50 mA
2
Bypass resistance
Bypass resistance
temperature coefficient
RPS
∆RPS/∆Ta
1.6
—
2.0
+2000
2.4
—
kΩ
IPS = 1 mA
3
3
ppm/°C IPS = 1 mA,
0°C to 50°C gradient
HA17431P/PA/FP/FPA/PNA/UA, HA17432UA
(Ta = 25°C, IK = 10 mA)
Test Conditions Notes
VKA = Vref
Normal
VKA = Vref Ta = 0°C to +70°C 1, 4
Item
Symbol
Vref
Min
Typ
Max
Unit
Reference voltage
2.440 2.495 2.550
2.395 2.495 2.595
—
V
A
Reference voltage
temperature deviation
Vref(dev)
5
(17)
mV
Reference voltage
∆Vref/∆VKA
—
—
—
—
1.4
1
3.8
0.5
3.7
2.2
6
mV/V VKA = Vref to 10 V
KA = 10 V to 40 V
regulation
V
Reference input current
Reference current
temperature deviation
Iref
Iref(dev)
µA
µA
R1 = 10 kΩ, R2 = ∞
R1 = 10 kΩ, R2 = ∞,
Ta = 0°C to +70°C
(2.5)
4
2
Minimum cathode current
Off state cathode current
Dynamic impedance
Imin
Ioff
ZKA
—
—
—
0.4
0.001
0.2
1.0
1.0
0.5
mA
µA
Ω
VKA = Vref
VKA = 40 V, Vref = 0 V
VKA = Vref,
IK = 1 mA to 100 mA
Notes: 1. Vref(dev) = Vref(max) – Vref(min)
Vref(max)
Vref(min)
Vref(dev)
Ta Min
Ta Max
2. Imin is given by the cathode current at Vref = Vref(IK=10mA) – 15 mV.
3. RPS is only provided in HA17431VLP.
4. The maximum value is a design value (not measured).
REJ03D0678-0300 Rev.3.00 Apr 03, 2007
Page 5 of 19
HA17431 Series
MPAK-5V(5-pin), MPAKV(3-pin) and UPAKV Marking Patterns
The marking patterns shown below are used on MPAK-5V, MPAKV and UPAKV products. Note that the product code
and mark pattern are different. The pattern is laser-printed.
HA17431VLP
NC
HA17431VLTP
A
HA17432VLTP
A
PS
(1)
(2)
P
(b)
(4)
(1)
3
(2)
A
(b)
(4)
(c)
(1)
3
(2)
B
(b)
(4)
(c)
4
(a)
(c)
(a)
(a)
REF
A
K
REF
K
K
REF
HA17431UA
HA17432UA
HA17431VUP
HA17432VUP
REF
A
K
A
REF
A
K
A
4
A
4
C
4
R
4
S
(1)
(2)
(1)
(2)
(1)
(2)
(1)
(2)
A
A
A
A
Band mark
K
Band mark
REF
Band mark
K
Band mark
REF
(3)
(4)
(5)
(3)
(4)
(5)
(3)
(4)
(5)
(3)
(4)
(5)
Notes: 1. Boxes (1) to (5) in the figures show the position of the letters or numerals, and are not actually marked on the
package.
2. The letters (1) and (2) show the product specific mark pattern.
Product
(1)
4
4
4
3
3
4
4
(2)
P
R
S
A
B
HA17431VLP
HA17431VUP
HA17432VUP
HA17431VLTP
HA17432VLTP
HA17431UA
HA17432UA
A
C
3. The letter (3) shows the production year code (the last digit of the year) for UPAKV products.
4. The bars (a), (b) and (c) show a production year code for MPAK-5V and MPAKV products as shown below.
After 2015 the code is repeated every 8 years.
Year
(a)
(b)
2007
Bar
Bar
2008
Bar
Bar
2009
None
None
None
2010
None
None
Bar
2011
None
Bar
2012
None
Bar
2013
Bar
None
None
2014
Bar
None
Bar
(c)
None
Bar
None
Bar
5. The letter (4) shows the production month code (see table below).
Production month Jan. Feb. Mar. Apr. May. Jun. Jul.
Marked code
Aug. Sep. Oct.
Nov. Dec.
A
B
C
D
E
F
G
H
J
K
L
M
6. The letter (5) shows manufacturing code. For UPAKV products.
REJ03D0678-0300 Rev.3.00 Apr 03, 2007
Page 6 of 19
HA17431 Series
Characteristics Curves
HA17431VLP/VP/VUP/VLTP, HA17432VUP/VLTP
Reference Voltage Temperature Characteristics
2.575
V =Vref
K
I =10mA
K
2.550
2.525
2.500
2.475
2.450
2.425
K
A
V
I
Vref
K
REF
–20
0
20
40
60
80 85
Ambient temperature Ta (°C)
Cathode Current vs. Cathode Voltage Characteristics 1
1.0
Cathode Current vs. Cathode Voltage Characteristics 2
50
V =Vref
V =Vref
K
K
0.5
0
0
–50
0
1
2
3
4
5
–5
0
5
1V/DIV
1V/DIV
Cathode voltage VK (V)
Cathode voltage VK (V)
REJ03D0678-0300 Rev.3.00 Apr 03, 2007
Page 7 of 19
HA17431 Series
Dynamic Impedance vs. Frequency Characteristics
100
10
1
K
A
V
V
K
I
io
K
REF
0.1
0.01
i
= 2 mA
O
P-P
V
K
Z
=
(Ω)
KA
i
O
100
1k
10k
100k
1M
Frequency f (Hz)
Open Loop Voltage Gain, Phase vs. Frequency Characteristics
0
220Ω
Vo
∅
50
I =10mA
K
15kΩ
10µF
+
K
A
–
GVOL
REF
–180
–360
Vi
8.2kΩ
0
Vo
G = 20log
(dB)
Vi
100
1k
10k
100k
1M
10M
Frequency f (Hz)
REJ03D0678-0300 Rev.3.00 Apr 03, 2007
Page 8 of 19
HA17431 Series
HA17431P/PA/FP/FPA/PNA/UA, HA17432UA
Oscillation Stability vs. Load Capacitance between Anode and Cathode
1.5
150
100
50
Oscillation
region
Stable
region
V
CC
C
L
0
0.0001
0.001
0.01
0.1
1.0 2.0
Load capacitance CL (µF)
Open Loop Voltage Gain, Phase vs. Frequency Characteristics (1)
(With no feedback capacitance)
60
GV
IK = 10 mA
50
0
40
φ
30
20
10
0
90
220 Ω
15 kΩ
10 µF
Vout
180
Vin
8.2 kΩ GND
10
100
1 k
10 k
100 k
Frequency f (Hz)
Open Loop Voltage Gain, Phase vs. Frequency Characteristics (2)
(When a feedback capacitance (Cf) is provided)
IK = 5 mA
10
Gυ
Gυ
8
5
180
Cf = 0.022 µF
φ
Cf = 0.22 µF
270
360
2 k
Cf
Vout
+
0
200 µF
20 V
2.4 kΩ
50 Ω
–
Vin
GND
–4
10
100
1 k
10 k
Frequency f (Hz)
REJ03D0678-0300 Rev.3.00 Apr 03, 2007
Page 9 of 19
HA17431 Series
Reference Voltage Pin Input Current vs. Cathode Voltage Characteristics
2.5
2.0
1.5
1.0
IK = 10 mA
0.5
0
5
10
15
20
25
30
35
40
Cathode voltage VK (V)
Reference Voltage Temperature Characteristics
2.50
Pulse Response
INPUT
(P.G)
5
4
3
2
1
VKA = Vref
IK = 10 mA
2.49
2.48
2.47
2.46
2.45
2.44
OUTPUT
(Vout)
220 Ω
50 Ω
Vout
GND
P.G
f = 100 kHz
0
1
2
3
4
5
6
–20
0
20
40
60
80 85
Time t (µs)
Ambient temperature Ta (°C)
REJ03D0678-0300 Rev.3.00 Apr 03, 2007
Page 10 of 19
HA17431 Series
Reference Voltage Pin Input Current
Temperature Characteristics
Cathode Current vs. Cathode Voltage Characteristics (1)
150
3
2.5
2
R1 = 10 kΩ
R2 = ∞
120
100
80
IK = 10 mA
60
40
1.5
1
20
0
–20
VK = Vref
Ta = 25°C
–40
0.5
–60
–80
0
–100
–20
0
20
40
60
80 85
–2 –1
0
1
2
3
Ambient temperature Ta (°C)
Cathode voltage VK (V)
Cathode Current Temperature Characteristics
when Off State
2
Cathode Current vs. Cathode Voltage Characteristics (2)
1.2
VKA = 40 V
Vref = 0
VKA = Vref
Ta = 25°C
1.0
0.8
0.6
1.5
Imin
0.4
1
0.2
0.5
0
1
2
3
–20
0
20
40
60
80 85
Cathode voltage VK (V)
Ambient temperature Ta (°C)
REJ03D0678-0300 Rev.3.00 Apr 03, 2007
Page 11 of 19
HA17431 Series
Application Examples
As shown in the figure on the right, this IC operates as an inverting amplifier, with the REF pin as input pin. The open-
loop voltage gain is given by the reciprocal of “reference voltage deviation by cathode voltage change” in the electrical
specifications, and is approximately 50 to 60 dB. The REF pin has a high input impedance, with an input current Iref of
3.8 µA Typ (V version: Iref = 2 µA Typ). The output impedance of the output pin K (cathode) is defined as dynamic
impedance ZKA, and ZKA is low (0.2 Ω) over a wide cathode current range. A (anode) is used at the minimum potential,
such as ground.
K
REF
VCC
–
+
OUT
VEE
VZ ≅ 2.5V
A
Figure 1 Operation Diagram
Application Hints
No.
Application Example
Reference voltage generation circuit
Description
1
This is the simplest reference voltage circuit. The value of the
resistance R is set so that cathode current IK ≥ 1 mA.
Output is fixed at Vout ≅ 2.5 V.
Vin
Vout
R
K
A
The external capacitor CL (CL ≥ 3.3 µF) is used to prevent oscillation
CL
GND
in normal applications.
REF
GND
2
Variable output shunt regulator circuit
This is circuit 1 above with variable output provided.
(R1 + R2)
Here, Vout ≅ 2.5 V ×
R2
Vin
Vout
R
Iref
R1
R2
K
A
Since the reference input current Iref = 3.8 µA Typ (V version: Iref =
2 µA Typ) flows through R1, resistance values are chosen to allow
the resultant voltage drop to be ignored.
CL
REF
GND
GND
REJ03D0678-0300 Rev.3.00 Apr 03, 2007
Page 12 of 19
HA17431 Series
Application Hints (cont.)
No.
Application Example
Description
3
Single power supply inverting
comparator circuit
This is an inverting type comparator with an input threshold voltage
of approximately 2.5 V. Rin is the REF pin protection resistance,
with a value of several kΩ to several tens of kΩ.
VCC
RL
RL is the load resistance, selected so that the cathode current IK ≥ 1
mA when Vout is low.
Condition Vin
Vout
IC
Vout
Rin
K
A
C1
C2
Less then 2.5 V
2.5 V or more
VCC (VOH
)
OFF
ON
Vin
Approx. 2 V (VOL
)
REF
GND
GND
4
AC amplifier circuit
This is an AC amplifier with voltage gain G = –R1 / (R2//R3). The
input is cut by capacitance Cin, so that the REF pin is driven by the
VCC
RL
AC input signal, centered on 2.5 VDC
.
Cf
R2 also functions as a resistance that determines the DC cathode
potential when there is no input, but if the input level is low and
there is no risk of Vout clipping to VCC, this can be omitted.
To change the frequency characteristic, Cf should be connected as
indicated by the dotted line.
R1
Vout
K
A
Cin
R3
Vin
REF
R2
GND
R1
R2 // R3
Gain G =
(DC gain)
1
Cutoff frequency fc =
2π Cf (R1 // R2 // R3)
5
Switching power supply error
amplification circuit
This circuit performs control on the secondary side of a transformer,
and is often used with a switching power supply that employs a
photocoupler for offlining.
The output voltage (between V+ and V–) is given by the following
+
V
R4
formula:
+
R3
Cf
LED
(R1 + R2)
Vout ≅ 2.5 V ×
R2
–
R1
In this circuit, the gain with respect to the Vout error is as follows:
(Note)
R2
HA17431 open
loop gain
photocoupler
total gain
G =
×
×
(R1 + R2)
Secondary
side GND
R2
–
As stated earlier, the HA17431 open-loop gain is 50 to 60 dB.
V
Note: LED : Light emitting diode in photocoupler
R3 : Bypass resistor to feed IK(>Imin)
when LED current vanishes
R4 : LED protection resistance
REJ03D0678-0300 Rev.3.00 Apr 03, 2007
Page 13 of 19
HA17431 Series
Application Hints (cont.)
No.
Application Example
Description
6
Constant voltage regulator circuit
This is a 3-pin regulator with a discrete configuration, in which the
output voltage
(R2 + R3)
Vout = 2.5 V ×
R3
VCC
R1
Q
R1 is a bias resistance for supplying the HA17431 cathode current
and the output transistor Q base current.
Vout
R2
Cf
R3
GND
GND
7
Discharge type constant current circuit
This circuit supplies a constant current of
2.5 V
IL ≅
[A] into the load. Caution is required
RS
VCC
R
since the HA17431 cathode current is also superimposed on IL.
The requirement in this circuit is that the cathode current must be
greater than Imin = 1 mA. The IL setting therefore must be on the
order of several mA or more.
Q
2.5 V
RS
+
–
IL
GND
8
Induction type constant current circuit
In this circuit, the load is connected on the collector side of
transistor Q in circuit 7 above. In this case, the load floats from
GND, but the HA17431 cathode current is not superimposed on IL,
so that IL can be kept small (1 mA or less is possible). The constant
current value is the same as for circuit 7 above:
2.5 V
+
VCC
IL
R
–
IL ≅
[A]
Q
RS
2.5 V
RS
GND
REJ03D0678-0300 Rev.3.00 Apr 03, 2007
Page 14 of 19
HA17431 Series
Design Guide for AC-DC SMPS (Switching Mode Power Supply)
1. Use of Shunt Regulator in Transformer Secondary Side Control
This example is applicable to both forward transformers and flyback transformers. A shunt regulator is used on the
secondary side as an error amplifier, and feedback to the primary side is provided via a photocoupler.
Transformer
R1
SBD
PWM IC
HA17384
HA17385
IF
(+)
Output
R3
R2
IB
V0
(–)
VF
Vref
VK
Light
emitting diode
R5
REF
Phototransistor
Photocoupler
C1
K
R4
A
HA17431
GND
Figure 2 Typical Shunt Regulator/Error Amplifier
2. Determination of External Constants for the Shunt Regulator
A. DC characteristic determination
In figure 2, R1 and R2 are protection resistor for the light emitting diode in the photocoupler, and R2 is a bypass
resistor to feed IK minimum, and these are determined as shown below. The photocoupler specification should
be obtained separately from the manufacturer. Using the parameters in figure 2, the following formulas are
obtained:
V0 – VF – VK
VF
R1 =
, R2 =
IF + IB
IB
VK is the HA17431 operating voltage, and is set at around 3 V, taking into account a margin for fluctuation. R2
is the current shunt resistance for the light emitting diode, in which a bias current IB of around 1/5 IF flows.
Next, the output voltage can be determined by R3 and R4, and the following formula is obtained:
R3 + R4
V0 =
× Vref, Vref = 2.5 V Typ
R4
The absolute values of R3 and R4 are determined by the HA17431 reference input current Iref and the AC
characteristics described in the next section. The Iref value is around 3.8 µA Typ. (V version: 2 µA Typ)
B. AC characteristic determination
This refers to the determination of the gain frequency characteristic of the shunt regulator as an error amplifier.
Taking the configuration in figure 2, the error amplifier characteristic is as shown in figure 3.
G1
G2
When R5 ≠ 0
When R5 = 0
f1 fAC
f2
fOSC
Frequency f (Hz)
* fOSC : PWM switching frequency
Figure 3 HA17431 Error Amplification Characteristic
REJ03D0678-0300 Rev.3.00 Apr 03, 2007
Page 15 of 19
HA17431 Series
In Figure 3, the following formulas are obtained:
Gain
G1 = G0 ≈ 50 dB to 60 dB (determined by shunt regulator)
R5
G2 =
R3
Corner frequencies
f1 = 1/(2π C1 G0 R3)
f2 = 1/(2π C1 R5)
G0 is the shunt regulator open-loop gain; this is given by the reciprocal of the reference voltage fluctuation
∆Vref/∆VKA, and is approximately 50 dB.
3. Practical Example
Consider the example of a photocoupler, with an internal light emitting diode VF = 1.05 V and IF = 2.5 mA, power
supply output voltage V2 = 5 V, and bias resistance R2 current of approximately 1/5 IF at 0.5 mA. If the shunt
regulator VK = 3 V, the following values are found.
5V – 1.05V – 3V
R1 =
= 316(Ω) (330Ω from E24 series)
2.5mA + 0.5mA
1.05V
R2 =
= 2.1(kΩ) (2.2kΩ from E24 series)
0.5mA
Next, assume that R3 = R4 = 10 kΩ. This gives a 5 V output. If R5 = 3.3 kΩ and C1 = 0.022 µF, the following
values are found.
G2 = 3.3 kΩ / 10 kΩ = 0.33 times (–10 dB)
f1 = 1 / (2 × π × 0.022 µF × 316 × 10 kΩ) = 2.3 (Hz)
f2 = 1 / (2 × π × 0.022 µF × 3.3 kΩ) = 2.2 (kHz)
REJ03D0678-0300 Rev.3.00 Apr 03, 2007
Page 16 of 19
HA17431 Series
Package Dimensions
Package Name
MPAK-5
JEITA Package Code
SC-74A
RENESAS Code
PLSP0005ZB-A
Previous Code
MASS[Typ.]
0.015g
MPAK-5 / MPAK-5V
D
A
e
Q
c
E
HE
L
P
L
L
1
A
3
Dimension in Millimeters
A
A
Reference
Symbol
Min
1.0
0
Nom Max
b
x
S
A
M
A
A1
A2
A3
b
c
D
E
e
HE
L
L1
LP
x
1.4
0.1
e
1.0
1.1
0.25
0.4
0.16 0.26
2.95
1.6
1.3
0.35
0.11
2.8
0.5
A
A
2
1
A
3.1
1.8
1.5
0.95
2.8
e
1
y
S
2.5
0.3
0.1
0.2
3.0
0.7
0.5
0.6
S
b
0.05
0.05
0.55
I1
y
b2
e1
I1
c
b
2
2.15
0.3
0.85
A-A Section
Pattern of terminal position areas
Q
Package Name
MPAK
JEITA Package Code
SC-59A
RENESAS Code
PLSP0003ZB-A
Previous Code
MASS[Typ.]
0.011g
MPAK(T) / MPAK(T)V
D
A
Q
c
e
E
HE
L
L
P
L1
A
A
A3
b
Dimension in Millimeters
Min Nom Max
Reference
Symbol
x
S
A
M
e
A
A1
A2
A3
b
c
D
E
e
HE
L
L1
LP
x
b2
e1
I1
1.0
0
1.0
1.3
0.1
1.2
1.1
0.25
0.4
A
2
1
A
0.35
0.1
2.7
1.35
0.5
0.16 0.26
3.1
e1
1.5
0.95
2.8
1.65
A
S
2.2
3.0
b
0.35
0.15
0.25
0.75
0.55
0.65
0.05
0.55
I1
c
1.95
0.3
b
2
1.05
A-A Section
Pattern of terminal position areas
Q
REJ03D0678-0300 Rev.3.00 Apr 03, 2007
Page 17 of 19
HA17431 Series
Package Name
UPAK
JEITA Package Code
SC-62
RENESAS Code
PLZZ0004CA-A
Previous Code
UPAK / UPAKV
MASS[Typ.]
0.050g
Unit: mm
4.5 0.1
1.8 Max
1.5 0.1
(1.5)
0.44 Max
φ
1
0.53 Max
0.48 Max
0.44 Max
1.5
1.5
3.0
JEITA Package Code
P-SOP8-4.4x4.85-1.27
RENESAS Code
PRSP0008DE-B
Previous Code
FP-8DGV
MASS[Typ.]
0.1g
F
*1
D
NOTE)
8
5
1. DIMENSIONS"*1 (Nom)"AND"*2"
DO NOT INCLUDE MOLD FLASH.
2. DIMENSION"*3"DOES NOT
INCLUDE TRIM OFFSET.
bp
Index mark
Terminal cross section
( Ni/Pd/Au plating )
Dimension in Millimeters
Reference
Symbol
1
4
Min Nom Max
*3
e
bp
Z
D
E
4.85 5.25
4.4
x
M
L1
A2
A1
A
bp
b1
c
0.00 0.1 0.20
2.03
0.35 0.4 0.45
0.15 0.20 0.25
c1
θ
HE
e
x
y
L
0° 8°
6.35 6.5 6.75
y
Detail F
1.27
0.12
0.15
Z
L
L1
0.75
0.42 0.60 0.85
1.05
REJ03D0678-0300 Rev.3.00 Apr 03, 2007
Page 18 of 19
HA17431 Series
Package Name
TO-92(1)
JEITA Package Code
RENESAS Code
PRSS0003DA-A
Previous Code
MASS[Typ.]
0.25g
Unit: mm
SC-43A
TO-92(1) / TO-92(1)V
4.8 0.3
3.8 0.3
0.60 Max
0.55 Max
0.5 Max
1.27
2.54
Package Name
TO-92 Mod
JEITA Package Code
SC-51
RENESAS Code
PRSS0003DC-A
Previous Code
MASS[Typ.]
0.35g
Unit: mm
TO-92 Mod / TO-92 ModV
4.8 0.4
3.8 0.4
0.65 0.1
0.75 Max
0.60 Max
0.55 Max
0.5 Max
1.27
2.54
REJ03D0678-0300 Rev.3.00 Apr 03, 2007
Page 19 of 19
Sales Strategic Planning Div. Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan
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