MIC2589R-1YM Micrel Inc, MIC2589R-1YM Datasheet - Page 24

• Manufacturer Part Number: MIC2589R-1YM
• Description: Negative Voltage Hot-swap Controller -
• Manufacturer: Micrel Inc
• Type: Hot-Swap Controllerr

Specifications of MIC2589R-1YM

• Applications: General Purpose
• Internal Switch(s): No
• Voltage - Supply: -19 V ~ -80 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 14-SOIC (0.154", 3.90mm Width)
• Family Name: MIC2589
• Package Type: SOIC
• Operating Supply Voltage (min): -19V
• Operating Supply Voltage (max): -80V
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Product Depth (mm): 3.9mm
• Product Height (mm): 1.45mm
• Mounting: Surface Mount
• Pin Count: 14
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

December 2005
of the t
intersection of the Single Pulse curve. This point is
the normalized transient thermal impedance (Z
and the effective transient thermal impedance is the
product of R
example. Solving Equation 3,
T
J
(transient) = (201.6W) × (0.4°C/W) × 0.9 = 72.6°C
FLT
, and read up the Y-axis scale to find the
θ(J-C)
and the multiplier, 0.9 in this
Figure 8. Transient Thermal Impedance – SUM110N10-09
θ(J-C)
),
24
Finally, add this result to the maximum steady state
junction
determine the estimated maximum transient junction
temperature of the MOSFET:
74°C + 72.6°C = 146.6°C, which is safely under the
specified maximum junction temperature of 200°C for
the SUM110N10-09.
temperature
calculated
T
J
(max.transient) =
previously
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M9999-120505
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