●STR9000 Series
STR9000 Series 
5-Terminal, Low Dropout Voltage Dropper Type
■Features
•5-terminal regulator with two screw mount package
•Output current: 4.0A
•Low dropout voltage :VDIF≤1V (at IO=4A)
•Fine adjustment of output voltage
•Output ON/OFF control
•Built-in foldback overcurrent protection circuits
■Applications
•For stabilization of the secondary stage of switching power supplies
•Electronic equipment
■Absolute Maximum Ratings |
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(Ta=25°C) |
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Parameter |
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Ratings |
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Unit |
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STR9005 |
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STR9012/9015 |
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DC Input Voltage |
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VIN |
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25 |
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30 |
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V |
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DC Output Current |
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IO |
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4.0 |
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V |
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Power Dissipation |
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PD1 |
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75(TC=25°C) |
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W |
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PD2 |
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3.2(Without heatsink, stand-alone operation) |
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W |
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Junction Temperature |
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Tj |
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–30 to +125 |
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°C |
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Ambient Operating Temperature |
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Top |
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–20 to +100 |
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°C |
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Storage Temperature |
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Tstg |
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–30 to +125 |
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°C |
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Thermal Resistance (junction to case) |
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Rth(j-c) |
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1.25 |
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°C/W |
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■Electrical Characteristics |
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° |
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(Ta=25 C) |
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Ratings |
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Parameter |
Symbol |
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STR9005 |
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STR9012 |
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STR9015 |
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Unit |
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min. |
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typ. |
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max. |
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min. |
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typ. |
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max. |
min. |
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typ. |
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max. |
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Input Voltage |
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VIN |
6 |
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15 |
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13 |
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25 |
16 |
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25 |
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V |
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Output Voltage |
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VO |
4.9 |
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5.0 |
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5.1 |
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11.8 |
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12.0 |
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12.2 |
14.8 |
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15.0 |
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15.2 |
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V |
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Conditions |
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VIN=8V, IO=2.0A |
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VIN=16V, IO=2.0A |
VIN=20V, IO=2.0A |
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VDIF |
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0.5 |
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0.5 |
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0.5 |
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Dropout Voltage |
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Conditions |
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IO=2.0A |
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V |
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1.0 |
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1.0 |
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1.0 |
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Conditions |
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IO=4.0A |
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Line Regulation |
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VOLINE |
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10 |
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30 |
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30 |
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80 |
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50 |
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100 |
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mV |
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Conditions |
VIN=6 to 15V, IO=2.0A |
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VIN=13 to 25V, IO=2.0A |
VIN=16 to 25V, IO=2.0A |
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Load Regulation |
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VOLOAD |
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40 |
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100 |
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80 |
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200 |
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100 |
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200 |
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mV |
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Conditions |
VIN=8V, IO=0 to 3.0A |
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VIN=16V, IO=0 to 3.0A |
VIN=20V, IO=0 to 3.0A |
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Temperature Coefficient of Output Voltage |
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VO/ Ta |
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±0.5 |
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±1.5 |
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±1.5 |
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mV/°C |
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Ripple Rejection |
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RREJ |
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54 |
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54 |
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54 |
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dB |
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Conditions |
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f=100 to 120HZ |
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Overcurrent Protection |
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IS1 |
4.1 |
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4.1 |
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4.1 |
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A |
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Starting Current |
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Conditions |
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VIN=8V |
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VIN=16V |
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VIN=20V |
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Output ON/OFF Control Voltage |
VO(ON) |
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0.6 |
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0.6 |
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0.6 |
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(Voltage between terminal No.3 and 5) |
VO(OFF) |
2.0 |
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2.0 |
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2.0 |
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Voltage with Output Off |
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VO |
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0.5 |
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0.5 |
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0.5 |
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V |
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Conditions |
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VIN=8V, IO=0A |
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VIN=15V, IO=0A |
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VIN=20V, IO=0A |
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*Output is turned on when voltage between terminal No.3 and 5 is less than 0.6V, and turned off if more than 2.0V.
66
●STR9000 Series
■Outline Drawing |
(unit:mm) |
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36.0±0.3 |
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24.4±0.2 |
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±0.3 |
Lot Number |
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12.0 |
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Part Number |
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2.0
+0.2
1.0–0.1
q w e r t
3.55.45×4
5.45
° 30
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±0.3 |
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21.2 |
4.7max. |
20.0min. |
6.0max.
2.0±0.2
±0.1 φ 3.2
3.0
+0.2
0.6 –0.1
Plastic Mold Package Type
Flammability: UL94V-0
Weight: Approx. 14.5g
Terminal Connections
q Output (backside of case) w Output Fine Adjustment e Output ON/OFF Control r Input
t Ground
■Block Diagram
4 |
Tr1 |
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1 |
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R2 |
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R4 |
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R1 |
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M |
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Reg. |
Drive |
Amp. |
2 |
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R6 |
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Protection |
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VREF |
3 |
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Tr2 |
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R7 |
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R5 |
R8 |
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R3 |
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5 |
67 
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