HA17L431/HA17L431A Series
High-Precision Variable Shunt Regulators
ADE-204-029D (Z)
Rev.4
Dec. 2000
Description
The HA17L431LP(MPAK-5) / P(TO-92) / UP(UPAK) and the HA17L431ALP(MPAK-5) / AP(TO-92) are
temperature-compensated variable shunt regulators. These ICs can operate at about half voltage in
comparison with HA17431V series. They can be replaced for simple Zener diode and they can also be
used for switching power supply secondary-side error amplification circuit. MPAK-5, TO-92 and UPAK
packages are available. The MPAK-5 package, in particular, is suitable for high-density mounting, with a
mounting area approximately half that of Hitachi's UPAK products.
K
REF
A
UPAK
4.5 mm
2.5 mm
MPAK-5
K
REF
A
2.9 mm
1.6 mm
NC
NC
Mounting area
reduced by
approx 50%
Features
On-chip high-precision reference voltage source : 1.240 V
1.0% (Ta = 25
C) [HA17L431A]
: 1.240 V
1.5% (Ta = 25
C) [HA17L431]
Small reference voltage temperature coefficient: 30 ppm/
C Typ
Maximum cathode voltage: 16 V
Maximum cathode current: 50 mA
Minimum cathode current: 200
A Typ
Operating temperature range:
-
20 to +85
C
Application Example
Reference voltage generation circuits, etc.
HA17L431/HA17L431A Series
2
Block Diagram
A
+
-
REF
K
1.240 V
Application Circuit Example
Vout
+
-
A
K
REF
R2
R1
HA17L431/HA17L431A
GND
R
Switching Power Supply Secondary-Side
Error Amplification Circuit
Product Lineup
Reference Voltage
Item
Normal Version
1.5%
1.222 to 1.258 V
1.240V
A Version
1.0%
1.227 to 1.253 V
1.240V
Package
Operating
Temperature
Range
Industrial use
HA17L431LP
MPAK-5
-
20 to +85
C
HA17L431ALP
HA17L431P
TO-92
HA17L431AP
HA17L431UP
UPAK
HA17L432UP
HA17L431/HA17L431A Series
3
Pin Arrangement
2
3
K
REF
A
A
REF
K
K
1
A
REF
5
4
Marking side
NC
NC
MPAK-5
UPAK
1
3
2
UPAK
HA17L431LP/
HA17L431ALP
HA17L431UP
HA17L432UP
1
3
2
Marking side
Marking side
TO-92
HA17L431P/
HA17L431AP
REF
K
1
3
A
2
Marking side
HA17L431/HA17L431A Series
4
Absolute Maximum Ratings (Ta = 25
C)
Rated Value
Item
Symbol
HA17L431LP/
HA17L431ALP
HA17L431P/
HA17L431AP
HA17L431UP/
HA17L432UP
Unit
Note
Cathode voltage
V
KA
16
16
16
V
1
Continuous cathode
current
I
K
-
30 to +50
-
30 to +50
-
30 to +50
mA
Reference input current
Iref
-
0.05 to +5
-
0.05 to +5
-
0.05 to +5
mA
Power dissipation
P
T
150
500
800
mW
2
Operating temperature
Topr
-
20 to +85
-
20 to +85
-
20 to +85
C
Storage temperature
Tstg
-
55 to +150
-
55 to +150
-
55 to +150
C
Notes: 1. The anode pin is used as the reference for voltage values.
2. These values apply when Ta
25
C. If Ta
25
C, derate by below figure.
-
20 0
50
75 85
25
150
0.6
0.5
0.5W
0.4
Power dissipation P
T
(W)
Ambient temperature Ta (
C)
(1)
(2)
0.3
0.26
0.2
0.1
0.15W
-
1.2mW/
C
0.078
-
4mW/
C
-
20 0
50
75 85
25
150
1.2
1.0
0.8W
0.8
Power dissipation P
T
(W)
Ambient temperature Ta (
C)
(1): HA17L431P/AP
(2): HA17L431LP/ALP
HA17L431UP/432UP
(1): With 15mm
25mm
0.7mm
alumina ceramic board
(2): Without printed circuit board
(1)
(2)
0.6
0.416
0.4
0.2
0.385W
-
3.08mW/
C
-
6.4mW/
C
HA17L431/HA17L431A Series
5
Electrical Characteristics (Ta = 25
C, I
K
= 10 mA)
Item
Symbol
Min
Typ
Max
Unit
Test Condition
Remark
Reference voltage
Vref
1.222
1.240
1.258
V
V
KA
= Vref
HA17L431
1.227
1.240
1.253
HA17L431A
Reference voltage
deviation
Vref(dev)
5
mV
V
KA
= Vref,
Ta =
-
20
C to +85
C
*1
Reference voltage
temperature
coefficient
Vref/
Ta
30
ppm/
C
V
KA
= Vref,
0
C to 50
C gradient
Reference voltage
regulation
Vref/
V
KA
1.0
2.0
mV/V
V
KA
= Vref to 16V
Reference input
current
Iref
2
6
A
R1 = 10 k
, R2 =
Reference current
temperature
deviation
Iref(dev)
0.5
A
R1 = 10 k
, R2 =
,
Ta =
-
20
C to +85
C
Minimum cathode
current
Imin
0.2
1.0
mA
V
KA
= Vref
*2
Off cathode
current
Ioff
0.001
1.0
A
V
KA
= 16 V, Vref = 0 V
Dynamic
impedance
Z
KA
0.2
0.5
V
KA
= Vref,
I
K
= 1 mA to 50 mA
Notes: 1. Vref(dev) = (Vref maximum value at Ta =
-
20
C to +85
C)
-
(Vref minimum value at Ta =
-
20
C
to +85
C)
Vref(dev)
-
20
+85
Ta (
C)
2. Definition of minimum cathode current.
Imin is the cathode current value at which Vref = Vref
(I
K
= 10 mA)
-
15 mV.
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