PJ7900 Series 3-Terminal Negative Output Voltage Regulators
T
hese voltage regulators are intended as complements to the popular PJ7900 Series devices. These negative
Available in fixed output
voltage options from -5.0 to -
24 volts, these regulators employ current limiting, thermal shutdown, and safe-area compensation--making them remarkably rugged under most operating conditions. With adequate heatsinking they can deliver output currents in excess of 1 ampere.
regulators are available in the same seven-voltage options as the PJ7900 devices. In addition, one extra voltage option commonly employed in MECL systems is also available in the negative PJ7900 Series.
FEATURES • • • • • • Output Current up to 1 Ampere No External Components Required Internal Thermal Overload Protection Internal Short-Circuit Current Limiting Output Transistor Safe-Area Compensation Available in 4% Voltage Tolerance ORDERING INFORMATION
Operating Temperature (Ambient) -20 ℃ to +85℃
Pin : 1. Ground 2. Input 3. Output (Heatsink surface connected to Pin 2.) TO-220 TO-220F
Device PJ79xxCZ PJ79xxCI
Package TO-220 TO-220F
CIRCUIT SCHEMATIC
1-9
2002/10.rev.A
PJ7900 Series 3-Terminal Negative Output Voltage Regulators
ABSOLUTE MAXIMUM RATINGS (Ta=25℃)
RATING Input Voltage *(-5V≧Vo≧-18V) **(-24V) Power Dissipation TO-220 TO-220 TO-220F Operating Ambient Temperature Operating Junction Temperature Storage Temperature SYMBOL Vin
Without heatsink
PJ7900 Series -35 -40 2 15 10 -20 to +85 0 to +125 -25 to +150
UNIT V
Pt *** With heatsink Topr Tj Tstg
℃/W
℃ ℃ ℃
Note: *1: PJ7905 to PJ7918 **2: PJ7924 ***3: Follow the derating curve. When Tj exceeds 150℃, the internal circuit cuts off the output.
• PJ7905 ELECTRICAL CHARACTERISTICS
(Vin=-10V, Iout=500mA, Cin=2μF, Cout=1μF; Tj=0℃ to 125℃, unless otherwise specified.)
CHARACTERISTIC SYMBOL TEST CIRCUIT CONDITION MIN. TYP. MAX UNIT
Output Voltage Line Regulation Load Regulation Quiescent Current Quiescent current Change Output Noise Voltage Ripple Rejection Ratio Min. I/O Voltage Difference Peak Output Current Output Voltage Tempoerature Coefficient
Vo REGline REGload Iq
1 1 1 2
Δ Iq
Vn RR Vdif Io-peak
2
1 3 1 1
Tj=25℃ Vi=-7 to -20V, Io=5mA to 1A, PD
