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PL432xA3 Datasheet Preview

PL432xA3 Datasheet

Adjustable shunt regulator

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cystek CYStech Electronics Corp.
Adjustable shunt regulator
PL432XA3/N3
Spec. No. : C504A3
Issued Date : 2003.03.21
Revised Date :
Page No. : 1/9
Description
Features
The PL432 is a three terminal adjustable shunt
Low voltage operation(down to 1.24V)
regulator with thermal stability guaranteed over
Wide operating current range 80μA to 100mA
temperature. The output voltage can be adjusted
Low dynamic output impedance 0.05Ω typ.
to any value from 1.24V(VREF) to 20V with two
Trimmed bandgap design ±0.25%
external resistors. The PL432 has a typical dynamic Upgrade for PL431
output impedance of 0.05Ω. Active output circuitry Available in TO-92 and SOT-23 packages
provides a very sharp turn on characteristic, making
the PL432 an excellent replacement for zener diodes. Applications
The PL432 shunt regulator is available with four
Linear Regulators
Voltage tolerances(0.25%,0.5%,1% and 2%), and two Adjustable Supplies
package options(TO-92 and SOT-23). This allows the Switching Power Supplies
designer the opportunity to select the optimum combi- Battery Operated Computers
nation of cost and performance for their application. Instrumentation
Computer Disk Drives
Typical Application Circuit(Note 1,2)
R
VIN
R1
VREF
PL432
GND
R2
Notes:
VOUT 1) Set VOUT according to the following equation:
VOUT=VREF(1+R1/R2)+IREFR1
2) Choose the value for R as follows:
˙The maximum limit for R should be such that the
cathode current, Iz, is greater than the minimum
operating current(80μA) at VIN(MIN).
˙The minimum limit for R should be as such that Iz
does not exceed 100mA under all load conditions,
and the instantaneous turn-on value for Iz does not
exceed 150mA. Both of the following conditions
must be met:
RminVIN(max)/150mA(to limit instantaneous
turn-on Iz)
RminVIN(max)-VOUT (to limit Iz under
IOUT(min)+100mA normal operating
conditions)
PL432XA3/N3
CYStek Product Specification




Cystech Electonics

PL432xA3 Datasheet Preview

PL432xA3 Datasheet

Adjustable shunt regulator

No Preview Available !

cystek CYStech Electronics Corp.
Absolute Maximum Ratings
Parameter
Cathode Voltage
Continuous Cathode Current
Reference Input Current
Power Dissipation at TA=25℃
SOT-23
TO-92
Thermal Resistance
SOT-23
TO-92
Operating Ambient Temperature Range
Operating Junction Temperature Range
Storage Temperature Range
Lead Temperature(Soldering) 10 seconds
ESD Rating(Human Body Model)
Symbol
Vz
IZ
IREF
PD
ΘJA
TA
TJ
Tstg
TLEAD
VESD
Maximum
20
100
3
0. 37
0.95
336
132
0 to +70
0 to +150
-65 to +150
300
2
Spec. No. : C504A3
Issued Date : 2003.03.21
Revised Date :
Page No. : 2/9
Units
V
mA
mA
W
/W
kV
Electrical Characteristics
Unless otherwise specified, TA=25. Values in bold apply over full operating ambient temperature range.
PL432D
PL432C
Parameter
Reference Voltage
VREF Temperature
Deviation
Ratio of Change in
VREF to change in VZ
Reference Input
Current
IREF Temperature
Deviation
Off-state Cathode
Current
Dynamic Output
Impedance
Minimum Operating
Current
Symbol
Condition
VREF VZ=VREF,IZ=10mA(Note 1)
VDEV VZ=VREF,IZ=10mA(Note 1)
Min
1.237
1.224
-
ΔVREF IZ=10mA, ΔVZ=16V to VREF
ΔVZ
IREF R1=10kΩ,R2=,
IZ=10mA(Note2)
IREF(DEV) R1=10kΩ,R2=,
IZ=10mA(Note 2)
IZ(OFF) VREF=0V,VZ=6V(Note 3)
VREF=0V,VZ=16V(Note 3)
rz f <1kHz,VZ=VREF
IZ=100μA to 100mA(Note 1)
IZ(MIN) VZ=VREF(Note 1)
-
-
-
-
-
-
-
Typ
1.240
10
-1.0
0.15
0.1
0.125
0.135
0.05
20
Max
1.243
1.256
25
-2.7
0.5
0.4
0.150
0.150
0.15
80
Min
1.234
1.222
-
-
-
-
-
-
-
-
Typ
1.240
10
Max
1.246
1.258
25
-1.0 -2.7
0.15 0.5
0.1 0.4
0.125 0.150
0.135 0.150
0.05 0.15
20 80
Unit
V
mV
mV/V
μA
μA
μA
Ω
μA
PL432XA3/N3
CYStek Product Specification


Part Number PL432xA3
Description Adjustable shunt regulator
Maker Cystech Electonics
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PL432xA3 Datasheet PDF






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