GM7130-12TA5R GAMMA [Gamma Microelectronics Inc.], GM7130-12TA5R Datasheet - Page 6

• Manufacturer Part Number: GM7130-12TA5R
• Description: 3A STEP-DOWN VOLTAGE SWITCHING REGULATORS
• Manufacturer: GAMMA [Gamma Microelectronics Inc.]

6
ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
Note 2: All limits guaranteed at 25°C (standard type face) and over full operating temperature range (bold
Note 3: External components such as the catch diode, inductor, input and output capacitors can affect
Note 4: Output pin sourcing current. No diode, inductor or capacitor connected to output.
Note 5: Feedback pin removed from output and connected to 0V.
Note 6: Feedback pin removed from output and connected to +12V for the Adjustable, 3.3V, and 5V
Note 7: V = 40V
Note 8: Junction to ambient thermal resistance (no external heat sink) for the 5 lead TO-220 package
Note 9: Junction to ambient thermal resistance (no external heat sink) for the 5 lead TO-220 package
Note 10: If the TO-263 package is used, the thermal resistance can be reduced by increasing the PC board
Note 11: The oscillator frequency reduces to approximately 11 kHz in the event of an output short or an
Operating Ratings indicate conditions for which the device is intended to be functional, but do not
guarantee specific performance limits. Guaranteed specifications and Test conditions are shown in
Electrical Characteristics.
type face). All 25°C limits are 100% production tested. All limits over full operating temperature
range are guaranteed via correlation using standard Statistica Quality Control methods.
switching regulator system performance. When the GM7130 is used as shown in the Figure 1 test
circuit, system performance will be as shown in system parameters section of Electrical
Characteristics.
MICROELECTRONICS
versions, and +25V for the 12V and 15V versions, to force the output transistor OFF.
mounted vertically, with ½ inch leads in a socket, or on a PC board with minimum copper area.
mounted vertically, with ¼ inch leads soldered to a PC board containing approximately 4 square
inches of copper area surrounding the leads.
Copper area thermally connected to the package. Using 0.5 square inches of copper area, q
50°C//W, with 1 square inch of copper area, q
copper area, q is 32°C/W.
Overload which causes the regulated output voltage to drop approximately 40% from the nominal
output voltage. This self- protection feature lowers the Average power dissipation of GM7130
by lowering the minimum duty cycle from 5% down to approximately 2%.
IN
A
JA
A
3A STEP-DOWN VOLTAGE SWITCHING REGULATORS
Power Management
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is 37°C/W, and with 1.6 or more square inches of
GM7130
JA
is