Samsung SR-S25NTA Service Manual page 125

= ELECTRICAL CHARACTERISTICS KA7812/|
(Refer to test circuit, Tun<Ts<Tuax, lo-500MA, Vi-19V, Ci-0.33 uf, Co=0.1 uF, unless otherwise specified)
Characteristic Test Conditi sala
aracteristic es ONndaltvions Typ Unit
ie faehnal [rast
5.0mMA<1.0A, Po< 15W
Vi= 14.5V to 27V
Vi= 15.5V to 27V
Output Voltage
Line Regulation
Load Regulation
Quiescent Current Change
Vi=14.5V to 30V
Vi= 15V to 30V
\
Output Voltage Drift o=5mA
Output Noise Voltage | Vw | f=10Hz to 100KHz Ts=25'C Pe
Ripple f=120Hz ae
Rejection Vi=15V to 25V
Dropout Voltage lo=1A, Ts=25°C
Vn
Output Resistance | Ro | f=tKHz |
:
AVo
AVo
jae lo=5mA to 1.0mA
{ %
Short Circuit Current Vi=35V, Ta=25'°C
Peak Current Ts=25°C
* Taw € Ts ¢ Tax
KA78XXI : Tus =-40°C , Tax = 125°C
KA78XX : Tuw=O'C, Twax= 125°C
* Load and line regulation are specified at constant junction temperature.
Changes in Vo due to heating effects must be taken into account separately. °
Pulse testing with low duty is used.
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