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.
4.5 mm
2.9 mm
A
REF
Mounting area
reduced by
approx 50%
NC NC
REF
A
UPAK
K
MPAK-5
K
2.5 mm
1.6 mm
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
µA
Typ
•
Operating temperature range:
−20
to +85°C
Application Example
•
Reference voltage generation circuits, etc.
HA17L431/HA17L431A Series
Block Diagram
K
REF
1.240 V
+
−
A
Application Circuit Example
Switching Power Supply Secondary-Side
Error Amplification Circuit
Vout
R
+
−
K
A
REF
R2
GND
R1
HA17L431/HA17L431A
Product Lineup
Reference Voltage
Normal Version
±1.5%
1.222 to 1.258 V
1.240V
HA17L431LP
HA17L431ALP
HA17L431P
HA17L431AP
HA17L431UP
HA17L432UP
Ο
Ο
Ο
Ο
UPAK
Ο
Ο
TO-92
A Version
±1.0%
1.227 to 1.253 V
1.240V
Operating
Temperature
Range
−20
to +85°C
Item
Industrial use
Package
MPAK-5
2
HA17L431/HA17L431A Series
Absolute Maximum Ratings
(Ta = 25°C)
Rated Value
Item
Cathode voltage
Continuous cathode
current
Reference input current
Power dissipation
Operating temperature
Storage temperature
Symbol
V
KA
I
K
Iref
P
T
Topr
Tstg
HA17L431LP/
HA17L431ALP
16
−30
to +50
−0.05
to +5
150
−20
to +85
−55
to +150
HA17L431P/
HA17L431AP
16
−30
to +50
−0.05
to +5
500
−20
to +85
−55
to +150
HA17L431UP/
HA17L432UP
16
−30
to +50
−0.05
to +5
800
−20
to +85
−55
to +150
Unit
V
mA
mA
mW
°C
°C
2
Note
1
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.
Power dissipation P
T
(W)
Power dissipation P
T
(W)
0.6
0.5
0.4
0.3
0.26
0.5W
−4mW/°C
(1)
1.2
1.0
0.8
0.6
0.416
0.8W
−6.4mW/°C
(1)
0.2
0.078
0.15W
−1.2mW/°C
(2)
0.4
0.2
−3.08mW/°C
0.385W (2)
0.1
−20
0
25 50 75 85
150
Ambient temperature Ta (°C)
(1): HA17L431P/AP
(2): HA17L431LP/ALP
−20
0
25 50 75 85
150
Ambient temperature Ta (°C)
HA17L431UP/432UP
(1): With 15mm
×
25mm
×
0.7mm
alumina ceramic board
(2): Without printed circuit board
4
HA17L431/HA17L431A Series
Electrical Characteristics
(Ta = 25°C, I
K
= 10 mA)
Item
Reference voltage
Symbol
Vref
Min
1.222
1.227
Reference voltage
deviation
Reference voltage
temperature
coefficient
Reference voltage
regulation
Reference input
current
Reference current
temperature
deviation
Minimum cathode
current
Off cathode
current
Dynamic
impedance
Vref(dev)
∆Vref/∆Ta
Typ
1.240
1.240
5
±30
Max
1.258
1.253
mV
ppm/°C
V
KA
= Vref,
Ta =
−20°C
to +85°C
V
KA
= Vref,
0°C to 50°C gradient
V
KA
= Vref to 16V
R1 = 10 kΩ, R2 =
∞
R1 = 10 kΩ, R2 =
∞,
Ta =
−20°C
to +85°C
V
KA
= Vref
V
KA
= 16 V, Vref = 0 V
V
KA
= Vref,
I
K
= 1 mA to 50 mA
*2
Unit
V
Test Condition
V
KA
= Vref
Remark
HA17L431
HA17L431A
*1
∆Vref/∆V
KA
Iref
Iref(dev)
1.0
2
0.5
2.0
6
mV/V
µA
µA
Imin
Ioff
Z
KA
0.2
0.001
0.2
1.0
1.0
0.5
mA
µA
Ω
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
Ta (°C)
+85
2. Definition of minimum cathode current.
Imin is the cathode current value at which Vref = Vref
(I
K
= 10 mA)
−
15 mV.
5
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