Micropac Industries cannot assume any responsibility for any circuits shown or represent that they are free from patent infringement.

Micropac reserves the right to make changes at any time in order to improve design and to supply the best product possible.

MICROPAC INDUSTRIES, INC. HYBRID MICROELECTRONICS PRODUCTS DIVISION

• 905 E. Walnut St., Garland, TX 75040 • (972) 272-3571 • Fax (972) 494-2281

www.micropac.com

05/16/01

PRELIMINARY DATA SHEET

53248

28 VDC SOLID STATE HIGH SIDE SELF-PROTECTED POWER CONTROLLER

FUNCTIONAL DESCRIPTION

The 53248 SSPC is a fully protected switch that offers a wide range of features. These include overvoltage and

undervoltage shutdown with automatic reset, overcurrent and short circuit protection provided by temperature

sensing with automatic reset when temperature drops to safe levels, built in transient protection and fully optically

isolated control and status lines. The overcurrent and short circuit protection are achieved through the

the pass element temperature is between +150°C and +175°C, the drive to the pass element is removed and

current flow ceases. When the temperature is reduced approximately 10°C the device will resume operations.

This will continue until the overcurrent/short circuit is removed or the control is turned off. Status will indicate the

overcurrent condition until the fault is removed.

Peak Current Limits vs. Junction Temperature*

Overvoltage and Undervoltage Limits

Junction Temperature

Min

Typ

Max

Unit

Overvoltage

+34 VDC to +43 VDC

-40°C

48

56

65

A

Undervoltage

+3.4 VDC to +5.0 VDC

+25°C

40

50

58

A

Overvoltage hysteresis

Typical +1.0 VDC

+150°C

31

37

45

A

Undervoltage hysteresis

Typical +0.5 VDC

*Peak Duration - Typical Waveform

Short Circuit Protection:

Short-While-On Peak Duration @ 25°C

-10

0

10

20

30

40

50

60

70

-20

0

20

40

60

80

100

Time (ms)