SI9185DMP-28-T1 Vishay, SI9185DMP-28-T1 Datasheet - Page 12

• Manufacturer Part Number: SI9185DMP-28-T1
• Description: IC, LDO VOLT REG, 2.8V, 0.5A, MLP33-8
• Manufacturer: Vishay

Specifications of SI9185DMP-28-T1

• Primary Input Voltage: 6V
• Output Voltage Fixed: 2.8V
• Dropout Voltage Vdo: 250mV
• No. Of Pins: 8
• Output Current: 500mA
• Operating Temperature Range: -40°C To +85°C
• Termination Type: SMD
• Number Of Outputs: 1
• Polarity: Positive
• Input Voltage Max: 6 V
• Output Voltage: 2.8 V
• Output Type: Fixed
• Dropout Voltage (max): 0.02 V at 10 mA
• Line Regulation: 0.18 % / V
• Load Regulation: 30 mV
• Voltage Regulation Accuracy: 1.5 %
• Maximum Power Dissipation: 2.5 W
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: MLP33-8
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

PCB Footprint and Layout Considerations
The Si9185 comes in the MLP33 PowerPAK package with an
exposed pad on the bottom to provide a low thermal
impedance path into the PC board. When the PC board layout
is designed, a copper plane, referred to as spreading copper,
is recommended to be placed under the package to which the
exposed pad is soldered. This spreading copper is the path for
the heat to move away from the package into the PC board.
With the Si9185 mounted on a four layer board measuring 2”
2”, a spreading copper area of 0.25 square inches will yield an
Rq
1 watt in an 80_C ambient environment.
Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silicon Technology and
Package Reliability represent a composite of all qualified locations.
http://www.vishay.com/ppg?71765.
www.vishay.com
12
Si9185
Vishay Siliconix
ja
of 50_C/W. This allows for power dissipation in excess of
For related documents such as package/tape drawings, part marking, and reliability data, see
0.650
0.026
0.396
0.016
Figure 7. MLP33 PowerPAK Pad Pattern
0.906
0.026
1.426
0.056
2.852
0.112
1.425
0.056
S-51147—Rev. F, 20-Jun-05
Document Number: 71765
inches
mm
0.325
0.013
2.245
0.088