AHK432 반도체 회로 부품 판매점
Adjustable Low Voltage Shunt Regulator
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 Advanced Analogic Technologies |
AHK432
Adjustable Low Voltage Shunt Regulator
General Description
The AHK432 is a low voltage adjustable shunt refer-
ence with thermal stability guaranteed over the full
industrial temperature range. This 3-terminal regula-
tor has an output voltage range that extends from
VREF (1.24V) to 20V, giving designers outstanding
flexibility in the development of power supplies and
instrumentation. With a low operating current of
60µA, the AHK432 is well suited for battery-powered
portable electronic applications. It also has a sharp
turn-on characteristic and a dynamic resistance of
only 50mW making it an excellent replacement for
zener diodes in low tempco designs.
The AHK432 is available in the surface-mount 3 or
5 pin SOT-23, as well as the through hole TO-92.
Three voltage tolerance options are offered in each
package: ±0.5%, ±1%, and ±2%.
Features
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• Wide output voltage range (1.24 to 20V)
• Operating current from 60µA to 100mA
• Low dynamic output resistance of 50mΩ
• ±0.5% trimmed voltage reference
• 10mV typ. VREF deviation, from -40 to +105°C
• Surface mount 3 or 5 pin SOT-23 or through-
hole 3 pin TO-92 packages
Applications
• Notebook computers
• Isolated feedback in switching power supplies
• Adjustable and programmable supplies
• Linear regulators (External Reference)
• Instrumentation
• Medical Electronics*
• Global voltage reference for multiple power
supplies
Typical Application
IN RL
AHK432
OUT
R1
Adjustable regulator:
R1 + R2
R2
OUT = VREF
R2
432.2001.11.0.96
1
AHK432
Adjustable Low Voltage Shunt Regulator
Absolute Maximum Ratings (TA=25°C unless otherwise noted)
Symbol Description
Value
Units
VZ
IZ
IREF
TJ
ΘJA
PD
TLEAD
Cathode Voltage
Continuous Cathode Current
Reference Current
Operating Junction Temperature Range
Maximum Thermal Resistance
Maximum Power Dissipation
Maximum Soldering Temperature (at Leads)
TO-92
SOT-23-3, SOT-23-5
TO-92
SOT-23-3, SOT-23-5
20
100
3
-40 to 150
160
410
780
300
260
V
mA
mA
°C
°C/W
mW
°C
Note: Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at con-
ditions other than the operating conditions specified is not implied. Only one Absolute Maximum rating should be applied at any one time.
Electrical Characteristics (TJ=25°C unless otherwise noted)
Symbol Description Conditions
AHK432 0.5% AHK432 1.0% AHK432 2.0%
min typ max min typ Max min typ max Units
VREF
VDEV
∆VREF/∆VZ
IREF
IREF(DEV)
IZ(OFF)
RZ
IZ(MIN)
Reference
Voltage
VZ=VREF
IZ=10mA
(test circuit 1)
TA=25°C 1.234 1.240 1.246 1.228 1.240
TA=-40 1.222
to +105°C
1.258 1.215
VREF Temp
Deviation
TA=-40 to +105°C,
VZ=VREF, IZ=10mA
(test circuit 1)
10 25
10
Ratio of
Change in VREF
to Change in
IZ=10mA,
∆VZ=16V to VREF
(test circuit 2)
-1.0 -2.7
-1.0
Cathode Voltage
Reference
R1=10kΩ,
0.15 0.5
0.15
Input Current
R2=∞ , IZ=10mA
(test circuit 2)
IREF Temp
Deviation
TA=-40 to +105°C
R1=10kΩ , R2=∞ ,
0.1 0.4
0.1
IZ=10mA
(test circuit 2)
Off State
Cathode Current
VREF=0V
(test circuit 3)
Dynamic
Output
Impedance
f<1kHz, VZ=VREF,
IZ=100mA to 100mA
(test circuit 1)
VZ=6V
VZ=16V
0.04 0.1
0.04 0.5
0.05 0.2
0.04
0.04
0.05
Minimum
Operating
VZ=VREF
(test circuit 1)
60 80
60
Current
1.252 1.215 1.240 1.265
1.265 1.200
1.280
25 10 25
-2.7 -1.0 -2.7
0.5 0.15 0.5
0.4 0.1 0.4
0.1 0.04 0.1
0.5 0.04 0.5
0.2 0.05 0.2
80 60 80
V
mV
mV/V
µA
µA
µA
Ω
µA
2 432.2001.11.0.96
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AHK432 regulator
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
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