SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Cel):
260
Qualification Status:
Not Qualified
Seated Height-Max:
1.2 mm
Supply Current-Max (Isup):
10 mA
Supply Voltage-Max (Vsup):
5.5 V
Supply Voltage-Min (Vsup):
4.5 V
Supply Voltage-Nom (Vsup):
5 V
Surface Mount:
YES
Technology:
NMOS
Temperature Grade:
OTHER
Terminal Finish:
Matte Tin (Sn)
Terminal Form:
GULL WING
Terminal Pitch:
0.65 mm
Terminal Position:
DUAL
Time@Peak Reflow Temperature-Max (s):
40
Width:
4.4 mm
A3959SLP-T Frequently Asked Questions (FAQs)
Allegro provides a recommended PCB layout in their application note AN296070, which includes guidelines for component placement, routing, and thermal management to ensure optimal performance and thermal dissipation.
The maximum output current of the A3959SLP-T can be calculated using the formula: IOUT_MAX = (VIN - VOUT) / (RSENSE x 2), where VIN is the input voltage, VOUT is the output voltage, and RSENSE is the sense resistor value. However, it's recommended to consult the datasheet and application notes for specific guidance on output current calculation.
The EN (Enable) pin is used to enable or disable the device. When the EN pin is high, the device is enabled and operates normally. When the EN pin is low, the device is disabled, and the output voltage is turned off. This pin can be used to implement power-saving modes or to shut down the device during fault conditions.
The A3959SLP-T has built-in overcurrent protection (OCP) and overtemperature protection (OTP) features. However, it's recommended to add external protection components, such as fuses or PTC thermistors, to provide additional protection against overcurrent and overheating. It's also important to follow proper thermal management and PCB design guidelines to ensure reliable operation.
The A3959SLP-T is rated for operation up to 150°C, but it's recommended to derate the output current and voltage according to the temperature derating curve provided in the datasheet. Additionally, proper thermal management and heat sinking are crucial to ensure reliable operation in high-temperature environments.
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A3959SLP-T Overview
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