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Description
THE GM78R05A is a low - dropout voltage regulator, suitable for various electronic equipments. It provides constant voltage power source with TO-220 4 leads full mold package. Dropout voltage of GM78R05A is below 0.5V in full rated current (1A). This regulator has various function such as peak current protection, thermal shut down, overvoltage protection and output disable function.
Features
1A / 5V Output low dropout voltage regulator TO-220 Full-Mold package (4PIN) Overcurrent protection, Thermal shutdown Overvoltage protection, Short-Circuit Protection With output disable function
TYPICAL APPLICATION CIRCUITS
TO- 220F- 4L
1. VIN 2. VO 3. GND 4. VDIS
12
34
VIN Ci
VO Co +
+
GM78R05A GND VDIS
Disable Signal
— Ci is required if regulator is located an appreciable distance from power supply filter. — Co improves stability and transient response. (Co > 47µF)
www.gammamicro.com
GM78R05A V0.1
1
MARKING INFORMATION & PIN CONFIGURATIONS
TO- 220F- 4L
GM78R05A AYW W
VIN VO
VDIS GND
A : Assembly Location Y : Year WW : Weekly
ORDERING INFORMATION
Ordering Number Package Shipping
GM78R05ATBF4T
TO- 220F- 4L
50 Units/ Tube
* For detail Ordering Number identification, please see last page.
ABSOLUTE MAXIMUM RATINGS
Symbol VIN VDIS IO Pd1 Pd2 TJ Parameter Input Voltage Disable Voltage Output Current Power Dissipation 1 Power Dissipation 2 Junction Temperature Operating Junction Temperature Thermal Resistance, Junction - to Case (Note 2) Thermal Resistance, Junction - to Air (Note 2 ) Thermal Shutdown Temperature Value 35 35 1.0 1.5 15 +150 -20 ~ +80 4.31 48.83 150 Unit V V A W W °C °C °C/W °C/W °C Remark No Heatsink Whit Heatsink -
GM78R05A
2
TOPR RqJC RqJA Ttsd
Electrical Characteristics (VIN = 7V, IO = 0.5A, TA = 25°C, unless otherwise specified)
Parameter Output Voltage Load Regulation Line Regulation Ripple Rejection Ratio Dropout Voltage Disable Voltage High Disable Voltage Low Disable Input Current High Disable Input Current Low Quiescent Current Symbol VO Rload Rline RR Vdrop VdisH VdisL IdisH IdisL IQ Conditions 5mA < IO < 1A 6V < VIN < 12V Note 1 IO = 1A Output Active Output Disabled Vdis = 2.7V Vdis = 0.4V IO = 0A Min. 4.88 45 2.0 Typ. 5 0.1 0.5 55 Max. 5.12 2.0 2.5 0.5 0.8 20 -0.4 10 Unit V % % dB V V V µA mA mA
Note: 1. These parameters, although guaranteed, are not 100% tested in production. 2. Junction - to - case thermal resistance test environments. -. Pneumatic heat sink fixture. -. Clamping pressure 60psi through 12mm diameter cylinder. -. Thermal grease applied between PKG and heat sink fixture.
BLOCK DIAGRAM(POSITIVE LOGIC)
VIN 1 THERMAL SHUTDOWN OVERVOLTAGE PROTECTION
Q1
2 VO
BANDGAP REFERENCE
+
R1
SOA PROTECTION OUTPUT ON/ OFF
VDIS 4
HIGH/ LOW
+
SHORT-CIRCUIT PROTECTION 1.4V
R2
3
GND
GM78R05A
3
TYPICAL PERFORMANCE CHARACTERISTICS
7 6
Quiescent Current IQ (mA) Output Voltage VO (V)
80
5 4 3 2 1 0 0 5 10
Input Voltage (V)
60
RL = RL = 5W
40
20 RL =
15
0 0
5
10
Input Voltage VIN (V)
15
20
Figure 1. Output Voltage vs. Input Voltage
7 6
Output Voltage VO (V)
Figure 2. Quiescent Current vs. Input Voltage
5.06 5.04
Output Voltage VO (V)
5 4 3 2 1 0 0 0.5 1 1.5 2.0 2.5 3
Disable Voltage Vdis (V)
5.02 5.00 4.98 4.96 4.94 4.92 -25
0
25
50
75
100
125
TEMPERATURE TJ (°C)
Figure 3. Output Voltage vs. Disable Voltage
10 0.55 0.50
Dropout Voltage Vdrop (V)
Figure 4. Output Voltage vs. Temperature (TJ)
Quiescent Current IQ (mA)
8
0.45 0.40 0.35 0.30 0.25 1.0A
6
4
2
GM78R05A
0 0
5
10
15
0.20 -25
0
25
50
75
100
125
Junction temperature TJ(°C)
Junction temperature TJ (°C)
Figure 5. Quiescent Current vs. Temperature(TJ)
Figure 6. Dropout Voltage vs. Temperature(TJ)
4
TYPICAL PERFORMANCE CHARACTERISTICS
20
Power dissipation PD (W)
15
10
5
0 -25
0
25
50
75
100
125
TEMPERATURE TA (°C)
Figure 7. Power Dissipation vs. Temperature(TA)
TO-220FPAB-4 PACKAGE OUTLINE DIMENSIONS
3.20 ± 0.20 3.40 ± 0.10
10.00 ± 0.20 (5.00) (3.50) (3.50)
4.50 ± 0.20 (3- 1.50 Dp010) (5°) (1.50) 6.50 ± 0.20 (45°) 15.70 ± 0.20 1.00 (5°) (3.30) 3-1.05MIN 3-1.30MAX 0.60 ± 0.10 1.25MIN 1.50MAX 2.54TYP (2.54 ± 0.25)
3 - R 0.25
2.80 ± 0.20 (1.00) (5°)
(3.50) (3.50)
(3- 1.50 Dp010) (1.90)
(10.40) 15.60 ± 0.20
(10.05)
(5°)
(13.60) 1.50 ± 0.20
10.30 ± 0.30
(7.62) (1.19) 5°
0.15 -0.05
+0.10
5°
4 - R 0.25
Unit: mm
GM78R05A
5
ORDERING NUMBER
GM 78R 05 A TBF4 T
Gamma Micro. Circuit Type Shipping T: Tube Package TBF4: TO-220-4L
Output Voltage 05: 5.0V
Version Code
GM78R05A
6
7
GM78R05A
Description
THE GM78R09A is a low - dropout voltage regulator, suitable for various electronic equipments. It provides constant voltage power source with TO-220 4 leads full mold package. Dropout voltage of GM78R09A is below 0.5V in full rated current (1A). This regulator has various function such as peak current protection, thermal shut down, overvoltage protection and output disable function.
Features
1A / 9.0 V Output lo.