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PDF 17431 Data sheet ( Hoja de datos )
| Número de pieza | 17431 | |
| Descripción | HA17431 | |
| Fabricantes | Hitachi Semiconductor | |
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HA17431 Series
Shunt Regulator
ADE-204-049A (Z)
Rev.1
Sep. 2002
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-5 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-5(5-pin), MPAK(3-pin) and UPAK miniature packages are optimal for use on high
mounting density circuit boards
• Car use is provided
Block Diagram
K PS*
REF
2.500V
+
−
2kΩ
A
Note: * The PS pin is only provided by the HA17431VLP.
1 page  
HA17431 Series
Absolute Maximum Ratings (cont.)
(Ta = 25°C)
Item
Symbol HA17431PNAJ
HA17431PJ/PAJ
HA17431FPJ/FPAJ Unit Notes
Cathode voltage
Continuous
cathode current
VKA
IK
40
–100 to +150
40
–100 to +150
40
–100 to +150
V1
mA
Reference input
current
Iref
–0.05 to +10
–0.05 to +10
–0.05 to +10
mA
Power dissipation
Operating
temperature
range
PT
Topr
500 *5
–40 to +85
800 *6
–40 to +85
500 *7
–40 to +85
mW 5,6,7
°C
Storage
temperature
Tstg
–55 to +150
–55 to +150
–55 to +125
°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.
Rev.1, Sep. 2002, page 5 of 24
5 Page 
HA17431 Series
HA17431PJ/PAJ/FPJ/FPAJ/P/PA/UA/UPA/FP/FPA/PNA/PNAJ, HA17432UA/UPA
Oscillation Stability vs. Load Capacitance between Anode and Cathode
150 1.5
100 Stable
region
Oscillation
region
50 VCC
0
0.0001
0.001
CL
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
50
IK = 10 mA
0
40 φ
30 90
20
10
0
10
220 Ω
15 kΩ
10 µF
Vin 8.2 kΩ
Vout
GND
100 1 k 10 k 100 k
Frequency f (Hz)
180
Open Loop Voltage Gain, Phase vs. Frequency Characteristics (2)
(When a feedback capacitance (Cf) is provided)
10 IK = 5 mA
Gυ
8 Gυ
180
Cf = 0.022 µF
5
φ
Cf = 0.22 µF
270
0 200 µF
Cf
2.4 kΩ
Vin
–4
10
50 Ω
2k
+ Vout
20 V
–
GND
100
1k
360
10 k
Frequency f (Hz)
Rev.1, Sep. 2002, page 11 of 24
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet 17431.PDF ] | |
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