LT8610A
LT8610AB
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LT8610A
LT8610AB

42V, 3.5A Synchronous Step-Down Regulator with 2.5μA Quiescent Current

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Info: : PRODUCTION tooltip
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Part Details
Part Models 48
1ku List Price Starting From $4.48
Features
  • LT8610 Feature Set, Plus:
    • 3.5A Maximum Output Current Fast
    • 30ns Minimum Switch-On Time
    • Improved Burst Mode Efficiency (LT8610AB Only)
    • Improved EMI
  • Wide Input Voltage Range: 3.4V to 42V
  • Ultralow Quiescent Current Burst Mode® Operation:
    • 2.5μA IQ Regulating 12VIN to 3.3VOUT
  • Fixed Output Voltages: 3.3V, 5V
  • Output Ripple < 10mVP-P (LT8610A Only)
  • High Efficiency Synchronous Operation:
    • 95% Efficiency at 1A, 5VOUT from 12VIN
    • 93% Efficiency at 1A, 3.3VOUT from 12VIN
  • Low Dropout Under All Conditions: 200mV at 1A
  • Safely Tolerates Inductor Saturation in Overload
  • Adjustable and Synchronizable Frequency:
    • 200kHz to 2.2MHz
  • Accurate 1V Enable Pin Threshold
  • Output Soft-Start and Tracking
  • Small Thermally Enhanced 16-Lead MSOP Package
  • AEC-Q100 Qualified for Automotive Applications
Additional Details
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The LT8610A/LT8610AB series are compact, high efficiency, high speed synchronous monolithic step-down switching regulators that consume only 2.5μA of quiescent current. Compared to the LT8610, they have higher maximum output currents of 3.5A and a faster minimum switch-on time of 30ns. The LT8610A has the same low ripple burst mode performance of the LT8610, while the LT8610AB has even higher light load efficiency.

The other features of the LT8610 remain unchanged in the LT8610A/LT8610AB series. A SYNC pin allows synchronization to an external clock. The EN/UV pin has an accurate 1V threshold for VIN undervoltage lockout or shut down. A capacitor on the TR/SS pin programs the output voltage ramp rate during startup. The PG flag signals when VOUT is within ±9% of the programmed output voltage as well as fault conditions.

FEEDBACK VOLTAGE MIN VIN OUTPUT CURRENT NOTES
LT8610AC-1 0.80V 3.0V 3.5A Fsw = 1.5MHz to 2.2MHz, Optimized Transient Response
LT8610AC 0.80V 3.0V 3.5A Fsw = 200kHz to 2.2MHz
LT8610AB 0.97V 3.4V 3.5A Improved Burst Mode Efficiency
LT8610AX 0.97V 3.4V 3.5A 175°C Max Junction Temp
LT8610A 0.97V 3.4V 3.5A Higher Iout, 30ns Min On Time
LT8610 0.97V 3.4V 2.5A -

APPLICATIONS

  • Automotive and Industrial Supplies
  • GSM Power Supplies

Part Models 48
1ku List Price Starting From $4.48

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Jun 21, 2022

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