HA17L431 Series
High-Precision Variable Shunt Regulators
ADE-204-029B (Z)
3rd Edition
Apr. 1999
Description
The HA17L431LP(MPAK-5) / P(TO-92) / UP(UPAK) 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
1.5% (Ta = 25
C)
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 Series
2
Block Diagram
A
+
-
REF
K
1.240 V
Application Circuit Example
Vout
+
-
A
K
REF
R2
R1
HA17L431
GND
R
Switching Power Supply Secondary-Side
Error Amplification Circuit
Product Lineup
Product Name
Package
Application
HA17L431LP
MPAK-5
Industrial use
HA17L431P
TO-92
HA17L431UP
UPAK
HA17L432UP
HA17L431 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
HA17L431UP
HA17L432UP
1
3
2
Marking side
Marking side
TO-92
HA17L431P
REF
K
1
3
A
2
Marking side
Absolute Maximum Ratings
Rated Value
Item
Symbol
HA17L431LP
HA17L431P
HA17L431UP
HA17L432UP
Unit
Note
Cathode
voltage
V
KA
16
16
16
16
V
1
Continuous
cathode current
I
K
30 to +50
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
0.05 to +5
mA
Power
dissipation
P
T
150
500
800
800
mW
2
Operating
temperature
Topr
20 to +85
20 to +85
20 to +85
20 to +85
C
Storage
temperature
Tstg
55 to +150
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.
HA17L431 Series
4
Electrical Characteristics (Ta = 25
C, I
K
= 10 mA)
Item
Symbol
Min
Typ
Max
Unit
Test Condition
Note
Reference voltage
Vref
1.222
1.240
1.258
V
V
KA
= Vref
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.
HA17L431 Series
5
Marking Pattern on MPAK-5 Models (HA17L431LP) and
UPAK Models (HA17L431UP, HA17L432UP)
Because of the small package size, the following marking patterns are used on MPAK-5 and UPAK
models. Note that the product code and marking pattern are different. The patterns are laser-marked.
(b)
(2)
(c)
(3)
(1)
(a)
L
4
HA17L431LP
HA17L431UP
(3)
(4)
(1)
(2)
(5)
Band Mark
Band Mark
4
D
HA17L432UP
(1)
(2)
4
E
(3)
(4)
(5)
Note: The boxes shown for (1) to (5) and (a) to (c) in the figure are only to indicate the position of the
characters, and are not actually marked on the package.
Markings
'98
1
0
1
'99
1
1
0
2000
1
1
1
2001
0
0
0
2002
0
0
1
2003
0
1
0
2004
0
1
1
2005
1
0
0
(1), (2)
(3)
(a), (b), (c)
JAN
A
FEB
B
MAR
C
APR
D
MAY
E
JUN
F
JUL
G
AUG
H
SEP
J
OCT
K
NOV
L
DEC
M
Type of Marking
Model code: 4L
Production month code:
Production
month
Code
Production year code:
Notes: 1. 1 indicates a bar, and 0 indicates no bar.
2. Repeated every 8 years from 2006 on.
Characters
HA17L431LP
Bar mark
Meaning
Production
year
(a)
(b)
(c)
(1), (2)
(4)
(5)
JAN
A
FEB
B
MAR
C
APR
D
MAY
E
JUN
F
JUL
G
AUG
H
SEP
J
OCT
K
NOV
L
DEC
M
Type of Marking
Model code: 4D (HA17L431UP), 4E (HA17L432UP)
(3)
Production year code: The last digit of the year.
HITACHI management code
Production month code:
Production
month
Code
Characters
HA17L431UP, HA17L432UP
Meaning
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