ST 7812R
3-terminal 1 A positive voltage regulator
Features • Output Current up to 1 A • Thermal Overload Protection • ...
ST 7812R
3-terminal 1 A positive
voltage regulator
Features Output Current up to 1 A Thermal Overload Protection Short Circuit Protection Output Transistor Safe Operating Area Protection
Absolute Maximum Ratings (Ta = 25 OC) Parameter Input
Voltage Thermal Resistance Junction-Cases Thermal Resistance Junction-Air Operating Temperature Range Storage Temperature Range Symbol VI RθJC RθJA TOPR TS Value 35 5 65 0 to + 125 - 65 to + 150
O O
Units V C/W C/W
O
C C
O
Electrical Characteristics
(0 OC < TJ < 125 OC, IO = 500 mA, VI = 19 V, CI = 0.33 µF, CO = 0.1 µF, unless otherwise specified)
Parameter Output
Voltage
Symbol TJ = + 25 OC VO
Conditions 5 mA ≤ IO ≤ 1 A, PO ≤ 15 W
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Min. 11.5 11.4 55 -
Typ. 12 12 -1 76 2 18 230 2.2
Max. 12.5 12.6 240 120 240 120 8 0.5 1 -
Unit V
VI = 14.5 V to 27 V Line Regulation
1)
Regline Regload IQ ΔIQ ΔVO/ΔT VN RR VDrop RO ISC IPK
TJ = + 25 OC TJ = + 25 OC TJ = + 25 OC
VI = 14.5 V to 30 V VI = 16 V to 22 V IO = 5 mA to 1.5 A IO = 250 mA to 750 mA
mV mV mA mA mV/OC µV dB V mΩ mA A
Load Regulation
1)
Quiescent Current Quiescent Current Change Output
Voltage Drift Output Noise
Voltage Ripple Rejection Dropout
Voltage Output Resistance Short Circuit Current Peak Current
1)
IO = 5 mA to 1 A VI = 14.5 V to 30 V IO = 5 mA f = 10 Hz to 100 KHz, TA = + 25 OC f = 120 Hz, VI = 15 V to 25 V IO = 1 A, TJ = + 25 C
O
f = 1 KHz VI = 35 V, TA = + 25 C
O
TJ = + 25 OC
Load and line regulation are specified at constant j...
