Renesas HA17431 Shunt regulator Datasheet

Data Sheet
HA17431 Series
R03DS0086EJ0400
Rev.4.00
Jan 10, 2014
Shunt Regulator
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
PS
2kΩ
REF
A
R2
GND
HA17431VLP
R03DS0086EJ0400 Rev.4.00
Jan 10, 2014
Page 1 of 20
HA17431 Series
Ordering Information
Reference voltage (at 25°C)
Item
HA17431FP
Normal Version
±4%
2.395V to
2.495V to
2.595V
Industrial
use
Commercial
use
V Version
±1%
2.475V to
2.500V to
2.525V
Package Code
(Package Name)
PRSP0008DE-B
(FP-8DGV)
O
PRSS0003DC-A
(TO-92MODV)
O
HA17431PA
O
PRSS0003DC-A
(TO-92MODV)
HA17431PNA
O
PRSS0003DA-A
(TO-92V)
HA17431VLP
O
PLSP0005ZB-A
(MPAK-5V)
HA17431VP
O
PRSS0003DA-A
(TO-92V)
HA17431VUP
O
PLZZ0004CA-A
(UPAKV)
HA17432VUP
O
PLZZ0004CA-A
(UPAKV)
HA17431VLTP
O
PLSP0003ZB-A
(MPAKV)
HA17432VLTP
O
PLSP0003ZB-A
(MPAKV)
HA17431UA
O
PLZZ0004CA-A
(UPAKV)
HA17432UA
O
PLZZ0004CA-A
(UPAKV)
R03DS0086EJ0400 Rev.4.00
Jan 10, 2014
Operating
Temperature
Range
PRSP0008DE-B
(FP-8DGV)
O
HA17431FPA
HA17431P
A Version
±2.2%
2.440V to
2.495V to
2.550V
–20 to +85°C
–20 to +85°C
Page 2 of 20
HA17431 Series
Pin Arrangement
MPAK-5V
NC
5
PS
4
MPAKV
(HA17431VLTP)
A
3
1 2 3
REF A K
1
REF
FP-8DGV
REF NC
8
7
A
6
MPAKV
(HA17432VLTP)
A
3
2
K
1
K
UPAKV
(HA17431UA/VUP)
A
2
REF
1
REF
TO-92V
NC
5
2
A
UPAKV
(HA17432UA/VUP)
A
3
K
1
K
2
A
3
REF
TO-92MODV
Mark side
Mark side
1
1
K
2
3
4
NC NC NC
R03DS0086EJ0400 Rev.4.00
Jan 10, 2014
2
3
REF A
K
1
2
3
REF A
K
Page 3 of 20
HA17431 Series
Absolute Maximum Ratings
(Ta = 25°C)
Ratings
Item
Cathode voltage
Symbol
VKA
PS term. voltage
VPS
Continuous cathode current
IK
Reference input current
Iref
HA17431VLP
HA17431VP
Unit
16
16
V
1
1,2,3
VKA to 16
—
V
–50 to +50
–50 to +50
mA
–0.05 to +10
–0.05 to +10
mA
150 *
4
5
Power dissipation
PT
500 *
mW
Operating temperature range
Topr
–20 to +85
–20 to +85
°C
Storage temperature
Tstg
–55 to +150
–55 to +150
°C
HA17431VUP/HA17432VUP
HA17431VLTP/HA17432VLTP
Unit
Notes
4, 5
Ratings
Item
Symbol
Notes
Cathode voltage
VKA
16
16
V
1
PS term. voltage
VPS
—
—
V
1,2,3
Continuous cathode current
IK
–50 to +50
–50 to +50
mA
Reference input current
Iref
–0.05 to +10
–0.05 to +10
mA
Power dissipation
PT
800 *8
150 *4
mW
Operating temperature range
Topr
–20 to +85
–20 to +85
°C
Storage temperature
Tstg
–55 to +150
–55 to +150
°C
HA17431PNA
HA17431P/PA
Unit
40
40
V
4, 8
Ratings
Item
Cathode voltage
Symbol
VKA
Continuous cathode current
IK
–100 to +150
–100 to +150
mA
Reference input current
Iref
–0.05 to +10
–0.05 to +10
mA
Power dissipation
PT
500 *5
800 *6
mW
Operating temperature range
Topr
–20 to +85
–20 to +85
°C
Storage temperature
Tstg
–55 to +150
–55 to +150
°C
HA17431FP/FPA
HA17431UA/HA17432UA
Unit
40
40
V
Notes
1
5, 6
Ratings
Item
Cathode voltage
Symbol
VKA
Continuous cathode current
IK
–100 to +150
–100 to +150
mA
Reference input current
Iref
–0.05 to +10
–0.05 to +10
mA
Power dissipation
PT
500 *7
800 *8
mW
Operating temperature range
Topr
–20 to +85
–20 to +85
°C
Storage temperature
Tstg
–55 to +125
–55 to +150
°C
Notes
1
7, 8
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.
R03DS0086EJ0400 Rev.4.00
Jan 10, 2014
Page 4 of 20
HA17431 Series
Electrical Characteristics
HA17431VLP/VP/VUP/VLTP, HA17432VUP/VLTP
(Ta = 25°C, IK = 10 mA)
Item
Reference voltage
Symbol
Vref
Min
2.475
Typ
2.500
Max
2.525
Unit
V
Test Conditions
VKA = Vref
Reference voltage
temperature deviation
Vref(dev)
—
10
—
mV
VKA = Vref,
Ta = –20°C to +85°C
Reference voltage
temperature coefficient
Reference voltage regulation
Reference input current
ΔVref/ΔTa
—
±30
—
ppm/°C
Reference current
temperature
deviation
Minimum cathode current
Off state cathode current
Dynamic impedance
ΔVref/ΔVKA
Iref
Iref(dev)
—
—
—
2.0
2
0.5
3.7
6
—
mV/V
μA
μA
VKA = Vref,
0°C to 50°C gradient
VKA = Vref to 16 V
R1 = 10 kΩ, R2 = ∞
Imin
Ioff
ZKA
—
—
—
0.4
0.001
0.2
1.0
1.0
0.5
mA
μA
Ω
Bypass resistance
RPS
1.6
2.0
2.4
kΩ
Bypass resistance
temperature coefficient
ΔRPS/ΔTa
—
+2000
—
ppm/°C
Notes
1
R1 = 10 kΩ, R2 = ∞,
Ta = –20°C to +85°C
VKA = Vref
VKA = 16 V, Vref = 0 V
2
VKA = Vref,
IK = 1 mA to 50 mA
IPS = 1 mA
3
3
IPS = 1 mA,
0°C to 50°C gradient
HA17431P/PA/FP/FPA/PNA/UA, HA17432UA
(Ta = 25°C, IK = 10 mA)
Item
Reference voltage
Symbol
Vref
Min
2.440
2.395
Typ
2.495
2.495
Max
2.550
2.595
Unit
V
Test Conditions
VKA = Vref
Reference voltage
temperature deviation
Vref(dev)
—
5
(17)
mV
VKA = Vref
Reference voltage
regulation
ΔVref/ΔVKA
1.4
1
3.8
3.7
2.2
6
mV/V
Reference input current
Iref
—
—
—
Reference current
temperature deviation
Minimum cathode current
Off state cathode current
Iref(dev)
—
0.5
(2.5)
μA
Imin
Ioff
—
—
0.4
0.001
1.0
1.0
mA
μA
Dynamic impedance
ZKA
—
0.2
0.5
Ω
μA
Ta = 0°C to +70°C
Notes
A
Normal
1, 4
VKA = Vref to 10 V
VKA = 10 V to 40 V
R1 = 10 kΩ, R2 = ∞
R1 = 10 kΩ, R2 = ∞,
Ta = 0°C to +70°C
VKA = Vref
VKA = 40 V, Vref = 0 V
4
2
VKA = Vref,
IK = 1 mA to 100 mA
Notes: 1. Vref(dev) = Vref(max) – Vref(min)
Vref(max)
Vref(dev)
Vref(min)
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).
R03DS0086EJ0400 Rev.4.00
Jan 10, 2014
Page 5 of 20
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
(1)
(2)
4
P
(a)
(b)
REF
HA17431VLTP
HA17432VLTP
A
A
PS
(4)
(c)
A
K
(1)
(2)
3
A
(a)
(b)
4
A
(1)
(2)
(c)
REF
HA17431UA
REF
(4)
K
K
A
Band mark
B
(a)
(b)
4
C
(1)
(2)
(c)
REF
HA17431VUP
REF
A
A
4
R
(1)
(2)
HA17432VUP
K
A
A
K
(3)
(4)
(5)
4
S
(1)
(2)
A
A
Band mark
Band mark
REF
(5)
(4)
K
Band mark
K
(4)
(2)
3
HA17432UA
A
(3)
(1)
REF
(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)
(2)
HA17431VLP
4
P
HA17431VUP
4
R
HA17432VUP
4
S
HA17431VLTP
3
A
HA17432VLTP
3
B
HA17431UA
4
A
HA17432UA
4
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
2007
2008
2009
2010
2011
2012
2013
2014
(a)
Bar
Bar
None
None
None
None
Bar
Bar
(b)
Bar
Bar
None
None
Bar
Bar
None
None
(c)
None
Bar
None
Bar
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
A
B
C
D
E
F
G
Aug.
H
Sep.
J
Oct.
K
Nov.
L
Dec.
M
6. The letter (5) shows manufacturing code. For UPAKV products.
R03DS0086EJ0400 Rev.4.00
Jan 10, 2014
Page 6 of 20
HA17431 Series
Characteristics Curves
HA17431VLP/VP/VUP/VLTP, HA17432VUP/VLTP
Reference voltage Vref (V)
Reference Voltage Temperature Characteristics
2.575
VK=Vref
IK=10mA
2.550
2.525
K
2.500
REF
IK
V Vref
A
2.475
2.450
2.425
–20
0
20
40
60
80 85
Ambient temperature Ta (°C)
Cathode Current vs. Cathode Voltage Characteristics 1
1.0
VK=Vref
Cathode current IK (mA)
Cathode current IK (mA)
VK=Vref
0.5
0
Cathode Current vs. Cathode Voltage Characteristics 2
50
0
1
2
3
4
Cathode voltage VK (V)
R03DS0086EJ0400 Rev.4.00
Jan 10, 2014
5
1V/DIV
0
–50
–5
0
Cathode voltage VK (V)
5
1V/DIV
Page 7 of 20
HA17431 Series
Dynamic impedance ZKA (Ω)
Dynamic Impedance vs. Frequency Characteristics
100
10
K
1
IK
REF
io
V VK
A
0.1
iO = 2 mAP-P
ZKA=
0.01
100
1k
10k
100k
VK
(Ω)
iO
1M
Frequency f (Hz)
0
∅
50
GVOL
–180
0
Phase delay ∅ (degrees)
Open loop voltage gain GVOL (dB)
Open Loop Voltage Gain, Phase vs. Frequency Characteristics
220Ω
Vo
IK=10mA
15kΩ
10μF
– +
K
REF
Vi
A
8.2kΩ
–360
G = 20log
100
1k
10k
100k
1M
10M
Vo
(dB)
Vi
Frequency f (Hz)
R03DS0086EJ0400 Rev.4.00
Jan 10, 2014
Page 8 of 20
HA17431 Series
HA17431P/PA/FP/FPA/PNA/UA, HA17432UA
Cathode current IK (mA)
Oscillation Stability vs. Load Capacitance between Anode and Cathode
1.5
150
100
Oscillation
region
Stable
region
VCC
50
CL
0
0.0001
0.001
0.01
0.1
1.0 2.0
Load capacitance CL (μF)
40
φ
30
90
20
220 Ω
15 kΩ
10 μF
10
Vin
0
10
Phase φ (degrees)
Open loop voltage gain GVOL (dB)
Open Loop Voltage Gain, Phase vs. Frequency Characteristics (1)
(With no feedback capacitance)
60
GV
IK = 10 mA
50
0
180
Vout
GND
8.2 kΩ
100
1k
10 k
100 k
Frequency f (Hz)
IK = 5 mA
10
Gυ
Gυ
180
Cf = 0.022 μF
5
φ
Cf = 0.22 μF
0
200 μF
Cf
2.4 kΩ
Vin
–4
10
50 Ω
270
2k
+ Vout
–
20 V
Phase φ (degrees)
8
7.5 kΩ
Open loop voltage gain GVOL (dB)
Open Loop Voltage Gain, Phase vs. Frequency Characteristics (2)
(When a feedback capacitance (Cf) is provided)
360
GND
100
1k
10 k
Frequency f (Hz)
R03DS0086EJ0400 Rev.4.00
Jan 10, 2014
Page 9 of 20
HA17431 Series
Reference voltage pin Input current
Iref (μA)
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
VKA = Vref
IK = 10 mA
2.49
Pulse Response
Input/Output voltage VI (V)
Reference voltage Vref (V)
INPUT
(P.G)
5
4
3
OUTPUT
(Vout)
2
50 Ω
220 Ω
Vout
1
GND
2.48
2.47
2.46
2.45
P.G
f = 100 kHz
0
1
2
3
4
Time t (μs)
R03DS0086EJ0400 Rev.4.00
Jan 10, 2014
5
6
2.44
–20
0
20
40
60
80 85
Ambient temperature Ta (°C)
Page 10 of 20
Reference Voltage Pin Input Current
Temperature Characteristics
3
Cathode Current vs. Cathode Voltage Characteristics (1)
150
R1 = 10 kΩ
R2 = ∞
IK = 10 mA
2.5
120
100
Cathode current IK (mA)
Reference voltage pin input current Iref (μA)
HA17431 Series
2
1.5
1
80
60
40
20
0
–20
VK = Vref
Ta = 25°C
–40
0.5
–60
–80
0
–20
0
20
40
60
–100
80 85
–2
Ambient temperature Ta (°C)
0.8
0.6
Imin
0.2
0
1
2
Cathode voltage VK (V)
R03DS0086EJ0400 Rev.4.00
Jan 10, 2014
1
2
3
Cathode Current Temperature Characteristics
when Off State
2
Cathode current when off state Ioff (nA)
Cathode current IK (mA)
VKA = Vref
Ta = 25°C
0.4
0
Cathode voltage VK (V)
Cathode Current vs. Cathode Voltage Characteristics (2)
1.2
1.0
–1
3
VKA = 40 V
Vref = 0
1.5
1
0.5
–20
0
20
40
60
80 85
Ambient temperature Ta (°C)
Page 11 of 20
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 openloop 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.
1
Application Example
Reference voltage generation circuit
Vin
Vout
R
K
CL
REF
A
GND
2
Description
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.
The external capacitor CL (CL ≥ 3.3 μF) is used to prevent oscillation
in normal applications.
GND
Variable output shunt regulator circuit
Vin
Vout
R
Iref
R1
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.
K
REF
CL
A
R2
GND
R03DS0086EJ0400 Rev.4.00
Jan 10, 2014
This is circuit 1 above with variable output provided.
(R + R2)
Here, Vout ≅ 2.5 V × 1
R2
GND
Page 12 of 20
HA17431 Series
Application Hints (cont.)
No.
3
Application Example
Description
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.
RL is the load resistance, selected so that the cathode current IK ≥ 1
mA when Vout is low.
Single power supply inverting
comparator circuit
VCC
RL
Rin
Condition Vin
Less then 2.5 V
C1
2.5 V or more
C2
Vout
K
Vin
REF A
GND
GND
4
Vout
IC
VCC (VOH)
OFF
Approx. 2 V (VOL) ON
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
AC input signal, centered on 2.5 VDC.
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.
VCC
Cf
RL
R1
Vout
K
Cin R3
Vin
REF
A
R2
GND
Gain G =
R1
R2 // R3
(DC gain)
1
2π Cf (R1 // R2 // R3)
Cutoff frequency fc =
5
Switching power supply error
amplification circuit
+
V
R4
+
LED
R3
–
R1
(Note)
Secondary
side GND
Cf
R2
–
V
Note: LED : Light emitting diode in photocoupler
R3 : Bypass resistor to feed IK(>Imin)
when LED current vanishes
R4 : LED protection resistance
R03DS0086EJ0400 Rev.4.00
Jan 10, 2014
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
formula:
(R + R2)
Vout ≅ 2.5 V × 1
R2
In this circuit, the gain with respect to the Vout error is as follows:
R2
G=
× HA17431 open × photocoupler
total gain
(R1 + R2) loop gain
As stated earlier, the HA17431 open-loop gain is 50 to 60 dB.
Page 13 of 20
HA17431 Series
Application Hints (cont.)
No.
6
Application Example
Constant voltage regulator circuit
VCC
R1
Q
Vout
Description
This is a 3-pin regulator with a discrete configuration, in which the
output voltage
(R + R3)
Vout = 2.5 V × 2
R3
R1 is a bias resistance for supplying the HA17431 cathode current
and the output transistor Q base current.
R2
Cf
R3
GND
7
GND
Discharge type constant current circuit
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
This circuit supplies a constant current of
2.5 V
IL ≅
[A] into the load. Caution is required
RS
RS
+
Load
GND
8
IL
–
Induction type constant current circuit
+
R
Load
VCC
IL
–
Q
2.5 V
GND
R03DS0086EJ0400 Rev.4.00
Jan 10, 2014
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
IL ≅
[A]
RS
RS
Page 14 of 20
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
IB
VF
Phototransistor
Photocoupler
R3
R2
Light
emitting diode
R5
C1
K
HA17431
V0
(–)
Vref
VK
(+)
Output
R4
REF
A
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:
R1 =
V
V0 – VF – VK
, R2 = F
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:
V0 =
R3 + R 4
× 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.
Gain G (dB)
G1
G2
f1
fAC
f2
When R5 ≠ 0
When R5 = 0
fOSC Frequency f (Hz)
* fOSC : PWM switching frequency
Figure 3 HA17431 Error Amplification Characteristic
R03DS0086EJ0400 Rev.4.00
Jan 10, 2014
Page 15 of 20
HA17431 Series
In Figure 3, the following formulas are obtained:
Gain
G1 = G0 ≈ 50 dB to 60 dB (determined by shunt regulator)
G2 =
R5
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
ΔVref/ΔVKA, 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.
R1 =
5V – 1.05V – 3V
= 316(Ω) (330Ω from E24 series)
2.5mA + 0.5mA
R2 =
1.05V
= 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)
R03DS0086EJ0400 Rev.4.00
Jan 10, 2014
Page 16 of 20
HA17431 Series
Package Dimensions
JEITA Package Code
RENESAS Code
Previous Code
MASS (Typ) [g]
SC-74A
PLSP0005ZB-A
MPAK-5 / MPAK-5V
0.015
D
A
e
Q
E
HE
L
A
c
LP
L1
A3
A
x M S
A
b
A2
A
A1
y S
S
b
c
A-A Section
Reference Dimensions in millimeters
Symbol
Min
Nom Max
A
A1
A2
A3
b
c
D
E
e
HE
L
L1
LP
x
y
Q
1.0
0
1.0
⎯
0.35
0.11
2.8
1.5
⎯
2.5
0.3
0.1
0.2
⎯
⎯
⎯
⎯
⎯
1.1
0.25
0.4
0.16
2.95
1.6
0.95
2.8
⎯
⎯
⎯
⎯
⎯
0.3
1.4
0.1
1.3
⎯
0.5
0.26
3.1
1.8
⎯
3.0
0.7
0.5
0.6
0.05
0.05
⎯
© 2013 Renesas Electronics Corporation. All rights reserved.
R03DS0086EJ0400 Rev.4.00
Jan 10, 2014
Page 17 of 20
HA17431 Series
JEITA Package Code
RENESAS Code
Previous Code
MASS (Typ) [g]
SC-59A
PLSP0003ZB-A
MPAK(T) / MPAK(T)V
0.011
D
A
Q
e
E
HE
L
A
c
LP
L1
A3
A
x M S
A
b
A2
A
A1
S
b
Reference Dimensions in millimeters
Symbol
Min Nom Max
c
A-A Section
A
A1
A2
A3
b
c
D
E
e
HE
L
L1
LP
x
Q
1.0
0
1.0
⎯
0.35
0.1
2.7
1.35
⎯
2.2
0.35
0.15
0.25
⎯
⎯
⎯
⎯
1.1
0.25
0.4
0.16
⎯
1.5
0.95
2.8
⎯
⎯
⎯
⎯
0.3
1.3
0.1
1.2
⎯
0.5
0.26
3.1
1.65
⎯
3.0
0.75
0.55
0.65
0.05
⎯
© 2013 Renesas Electronics Corporation. All rights reserved.
R03DS0086EJ0400 Rev.4.00
Jan 10, 2014
Page 18 of 20
HA17431 Series
Previous Code
UPAK / UPAKV
RENESAS Code
PLZZ0004CA-A
4.5 ± 0.1
2.5 ± 0.1
4.25 Max
1.5 1.5
3.0
JEITA Package Code
P-SOP8-4.4x4.85-1.27
RENESAS Code
PRSP0008DE-B
*1
0.44 Max
0.8 Min
0.53 Max
0.48 Max
Previous Code
FP-8DGV
MASS[Typ.]
0.1g
F
D
8
(1.5)
(0.2)
φ1
Unit: mm
1.5 ± 0.1
0.44 Max
0.4
1.8 Max
MASS[Typ.]
0.050g
(2.5)
JEITA Package Code
SC-62
(0.4)
Package Name
UPAK
NOTE)
1. DIMENSIONS"*1 (Nom)"AND"*2"
DO NOT INCLUDE MOLD FLASH.
2. DIMENSION"*3"DOES NOT
INCLUDE TRIM OFFSET.
5
c
*2
E
HE
bp
Index mark
Terminal cross section
( Ni/Pd/Au plating )
1
Z
Reference Dimension in Millimeters
Symbol
4
e
*3
bp
x
M
A
L1
A1
θ
L
y
Detail F
R03DS0086EJ0400 Rev.4.00
Jan 10, 2014
D
E
A2
A1
A
bp
b1
c
c1
θ
HE
e
x
y
Z
L
L1
Min Nom Max
4.85 5.25
4.4
0.00
0.1
0.35
0.4
0.20
2.03
0.45
0.15 0.20 0.25
0°
6.35
8°
6.5 6.75
1.27
0.12
0.15
0.75
0.42 0.60 0.85
1.05
Page 19 of 20
HA17431 Series
Package Name
TO-92(1)
JEITA Package Code
SC-43A
RENESAS Code
PRSS0003DA-A
Previous Code
TO-92(1) / TO-92(1)V
4.8 ± 0.3
MASS[Typ.]
0.25g
Unit: mm
2.3 Max
0.7
0.60 Max
0.55 Max
12.7 Min
5.0 ± 0.2
3.8 ± 0.3
0.5 Max
1.27
2.54
Package Name
TO-92 Mod
JEITA Package Code
SC-51
RENESAS Code
PRSS0003DC-A
Previous Code
TO-92 Mod / TO-92 ModV
4.8 ± 0.4
MASS[Typ.]
0.35g
Unit: mm
0.65 ± 0.1
0.75 Max
0.7
0.60 Max
0.55 Max
10.1 Min
2.3 Max
8.0 ± 0.5
3.8 ± 0.4
0.5 Max
1.27
2.54
R03DS0086EJ0400 Rev.4.00
Jan 10, 2014
Page 20 of 20
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