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PDF PL432xA3 Data sheet ( Hoja de datos )
| Número de pieza | PL432xA3 | |
| Descripción | Adjustable shunt regulator | |
| Fabricantes | Cystech Electonics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de PL432xA3 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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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:
Rmin≥VIN(max)/150mA(to limit instantaneous
turn-on Iz)
Rmin≥ VIN(max)-VOUT (to limit Iz under
IOUT(min)+100mA normal operating
conditions)
PL432XA3/N3
CYStek Product Specification
1 page  
cystek CYStech Electronics Corp.
Characteristic Curves
Spec. No. : C504A3
Issued Date : 2003.03.21
Revised Date :
Page No. : 5/9
Cathode Current vs Cathode Voltage
300
200
Vz=VREF
TA=25℃
100
0
-100
-200
-300
-1
-0.5 0 0.5 1
Cathode Voltage---Vz(V)
1.5
Cathode Current vs Cathode Voltage
150
100 Vz=VREF
TA=25℃
50
0
-50
-100
-150
-1.5
-1 -0.5 0 0.5
Cathode Voltage---Vz(V)
1
1.5
Reference Voltage vs Junction Temperature
1.248
1.246
1.244
1.242
1.24
1.238
1.236
1.234
-50
Iz=10mA
IZ=60μA
0 50 100
Junction Temperature---TJ(℃)
150
Ratio of Delta Reference Voltage to Delta Cathode
Voltage vs Junction Temperature
1.2
1.1
1
0.9
Iz=10mA
ΔVz=16V to VREF
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
-50 -25 0 25 50 75 100 125 150
Junction Temperature---TJ(℃)
PL432XA3/N3
Reference Input Current vs Junction Temperature
150
Iz=10mA
R1=10kΩ
125 R2=∞
100
75
50
-50 -25 0
25 50 75 100 125 150
Junction Temperature---TJ(℃)
Off-State Cathode Current
vs Junction Temperature
250
VREF=0V
200
Vz=16V
150
100
Vz=6V
50
0
-50 -25 0 25 50 75 100 125 150
Junction Temperature---TJ(℃)
CYStek Product Specification
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet PL432xA3.PDF ] | |
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