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L5987ATR

L5987ATR

L5987TR

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3 A step-down switching regulator

Quantity $ per Unit Savings
1 - 9$3.020%
10 - 24$2.7210%
25 - 99$2.5715%
100 - 249$2.2226%
250 - 499$2.1130%
500$1.8937%
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In stock
$3.02
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Parameter NameParameter Value
Input Voltage Min Volt2.9
Input Voltage Max Volt18.0
Operating Temp Min Celsius-40.0
Operating Temp Max Celsius150.0
ECCN USEAR99
ECCN EUNEC
Packing TypeTape And Reel
ROHS Compliance GradeEcopack2
GradeIndustrial
Package NameQFN-8L P 0.5 mm

The L5987 is a step-down switching regulator with a 3.5 A (minimum) current limited embedded Power MOSFET, so it is able to deliver an up to 3 A current to the load depending on the application conditions.


The input voltage can range from 2.9 V to 18 V, while the output voltage can be set starting from 0.6 V to VIN. Having a minimum input voltage of 2.9 V, the device is suitable also for a 3.3 V bus.


Requiring a minimum set of external components, the device includes an internal 250 kHz switching frequency oscillator that can be externally adjusted up to 1 MHz.


The VFQFPN8 and the HSOP packages with an exposed pad allow reducing the RthJAdown to 60 °C/W and 40 °C/W respectively.

Key features
  • 3 A DC output current
  • 2.9 V to 18 V input voltage
  • Output voltage adjustable from 0.6 V
  • 250 kHz switching frequency, programmable up to 1 MHz
  • Internal soft-start and inhibit
  • Low dropout operation: 100% duty cycle
  • Voltage feedforward
  • Zero load current operation
  • Overcurrent and thermal protection
  • VFQFPN 3 x 3 -8L and HSOP8 package