MLD2N06CL

4

Motorola TMOS Power MOSFET Transistor Device Data

Figure 6. Maximum Avalanche Energy

versus Starting Junction Temperature

Figure 7. Drain–Source Sustaining

Voltage Variation With Temperature

TJ, STARTING JUNCTION TEMPERATURE (°C)

ID = 2 A

25

50

75

100

125

150

100

80

60

40

20

0

TJ = JUNCTION TEMPERATURE

– 50

0

150

62.5

62.0

61.5

61.0

60.5

60.0

63.0

63.5

64.0

50

100

ID = 20 mA

FORWARD BIASED SAFE OPERATING AREA

The FBSOA curves define the maximum drain–to–source

voltage and drain current that a device can safely handle

when it is forward biased, or when it is on, or being turned on.

Because these curves include the limitations of simultaneous

high voltage and high current, up to the rating of the device,

they are especially useful to designers of linear systems. The

curves are based on a case temperature of 25

°C and a maxi-

mum junction temperature of 150

°C. Limitations for repetitive

pulses at various case temperatures can be determined by

using the thermal response curves. Motorola Application

Note, AN569, “Transient Thermal Resistance — General

Data and Its Use” provides detailed instructions.

MAXIMUM DC VOLTAGE CONSIDERATIONS

The maximum drain–to–source voltage that can be contin-

uously applied across the MLD2N06CL when it is in current

limit is a function of the power that must be dissipated. This

power is determined by the maximum current limit at maxi-

mum rated operating temperature (1.8 A at 150

°C) and not

the RDS(on). The maximum voltage can be calculated by the

following equation:

Vsupply =

(150 – TA)

ID(lim) (R

θJC + RθCA)

where the value of R

θCA is determined by the heatsink that is

being used in the application.

DUTY CYCLE OPERATION

When operating in the duty cycle mode, the maximum

drain voltage can be increased. The maximum operating

temperature is related to the duty cycle (DC) by the following

equation:

TC = (VDS x ID x DC x R

θCA) + TA

The maximum value of VDS applied when operating in a

duty cycle mode can be approximated by:

VDS =

150 – TC

ID(lim) x DC x R

θJC

Figure 8. Maximum Rated Forward Bias

Safe Operating Area (MLD2N06CL)

VDS, DRAIN–TO–SOURCE VOLTAGE (VOLTS)

VGS = 10 V

SINGLE PULSE

TC = 25°C

dc

10 ms

100

10

1.0

0.1

0.1

1.0

10

1 ms

RDS(on) LIMIT

THERMAL LIMIT

PACKAGE LIMIT