SM645 Datasheet, PDF (2/4 Pages) Microsemi Corporation – SWITCHING REGULATOR POWER OUTPUT STAGES

SM645/SM646/SM647
ABSOLUTE MAXIMUM RATINGS (Note 1)
SM645 SM646 SM647
Input Voltage, V_{4 - 2} ......................................... 60V
Output Voltage, V_{1 - 2} ...................................... 60v
Drive Input Reverse Voltage, V ................ 5V
3-4
Continuous Output Current, I₁ ....................... 15A
Peak Output Current ..................................... 20A
80V
100V
80v
100V
5V
5V
15A
15A
20A
20A
Drive Current, I ............................................ -0.4A
3
-0.4A
-0.4A
Thermal Resistance
Operating Junction Temperature
Power Switch, θ_{J - C} ................................................... 2.0°C/W
Commutating Diode ................................................. 2.0°C/W
Case to Ambient, θ_{C - A} ............................................ 30.0°C/W
Hermetic (K Package) .................................................. 150°C
Storage Temperature Range ............................. -65°C to 150°C
Lead Temperature (Soldering, 10 Seconds) ................... 300°C
Note 1. Exceeding these ratings could cause damage to the device.
THERMAL DATA
K Package:
Thermal Resistance-Junction to Case, θ_JC .................. 2.0°C/W
Thermal Resistance-Junction to Ambient, θ_JA .............. 35°C/W
Note A.
Junction Temperature Calculation:
T
J
=
T
A
+
(P
D
x
θ_JA).
Note B. The above numbers for θ_JC are maximums for the limiting
thermal resistance of the package in a standard mount-
ing configuration. The θ_JA numbers are meant to be
guidelines for the thermal performance of the device/pc-
board system. All of the above assume no ambient
airflow.
RECOMMENDED OPERATING CONDITIONS (Note 2)
SM645
Input Voltage, V_{4 - 2} .......................................... 50V
Output Voltage, V_{1 - 2} ....................................... 50v
Drive Input Reverse Voltage, V_{3 - 4} .................. 4V
Output Current, I₁ ........................................... 13A
Drive Current, I₃ .............................................. -0.3A
SM646
70V
70v
4V
13A
-0.3A
SM647
90V
90V
4V
13A
-0.3A
Operating Ambient Temperature Range
SM6XXK ....................................................... 0°C to 70°C
SM6XXHRK ............................................ -55°C to 125°C
Note 2. Range over which the device is functional.
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, these specifications apply for the operating ambient temperature of T_A = 25°C. Low duty cycle pulse testing tech-
niques are used which maintains junction and case temperatures equal to the ambient temperature.)
Parameter
Test Conditions
SG645/646/647
Min. Typ. Max.
Units
On-State Voltage (Note 3)
Diode Forward Voltage (Note 3)
Off-State Current
Diode Reverse Current
I₄ = 7A(-7A), I₃ = -30mA(30mA)
I₄ = 15A(-15A), I₃ = -30mA(30mA)
I = 7A(-7A)
4
I₄ = 15A(-15A)
V₄ = Rated input voltage
V
4
=
Rated
input
voltage,
T
A
=
125°C
V₁ = Rated output voltage
V₁ = Rated output voltage, T_A = 125°C
1.0 1.5 V
2.5 3.5
V
0.85 1.25 V
0.95 1.75 V
0.1 10 µA
10
µA
1.0 10 µA
500
µA
Note 3. Pulse test: Duration = 300µs, Duty Cycle ≤ 2%.
4/90 Rev 1.1 2/94
Copyright © 1994
LINFINITY Microelectronics Inc.
2
11861 Western Avenue ∞ Garden Grove, CA 92841
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