LM9070

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SNVS130E – DECEMBER 1999 – REVISED APRIL 2013

Figure 23. System Application Circuit and Control Waveforms

THERMAL MANAGEMENT

The LM9070 is packaged in both a TO-263 surface mount power package and a narrow lead-pitch TO-220

package. To obtain operation over the highest possible load current and input voltage ranges, care must be

taken to control the operating temperature of the device. Thermal shutdown protection is built in, with a threshold

above 150°C. Conventional heat-sinking techniques can be used with the TO-220 package. When applying the

TO-263 package, on board heat-sinking is important to prevent premature thermal shutdown. More copper foil

area under the tab of the device will directly improve the operating

the junction temperature of the device.

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