SA24491TLQ-Products-Silergy Corp

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SA24491TLQ

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High Efficiency, 36V Input, 1A Synchronous Step Down Regulator
Datasheet
SA24491TLQ High Efficiency, 36V Input, 1A Synchronous Step Down Regulator Datasheet
    Part numberSA24491TLQ
    Channel(#)1
    Vin (min) (V)4.5
    Vin (max) (V)36
    Switching frequency (min)(kHz)300
    Switching frequency (max)(kHz)2200
    Vout (min) (V)0.6
    Vout (max) (V)
    Iout (max) (A)1
    Vout2 (min)(V)
    Vout2 (max )(V)
    Iout2 (max)(A)
    Vref accuracy (±%)1
    Vout accuracy(±%)
    Control modePeak current control
    Duty cycle (max)(%)95
    Operation modePFM
    Iq (typ) (uA)18
    FeaturesEnable,Power good,Auto-discharge,Fixed soft-start,UVP with hiccup,Low ISD,Adjustable switching frequency,Spread spectrum,Cycle by cycle overcurrent protection,Pre-bias startup
    PackageQFN2×2-12
    Operating temperature range(°C)-40 to 125
    Functional safety categoryCapable
    • 4.5-36V Input Voltage Range
    • Low RDS(ON) for Internal Switches (Top/Bottom): 130/75mΩ
    • Low quiescent current: IQ = 18 µA (Typ.)
    • Internal Compensation 
    • Internal 1ms Soft-start Limits the Inrush Current
    • Adjustable Switching Frequency Range: 300kHz to 2.2MHz
    • Light Load Operating Mode:PFM
    • Output Current Capability:1A
    • ±1% 0.6V Reference Over -40°C~125°C
    • Cycle-by-cycle Peak Current Limit
    • Short-Circuit Protection
    • Spread Spectrum Function
    • Thermal Shutdown and Auto Recovery
    • Compact Package: QFN2×2-12
    • Automotive AEC- Q100 Grade 1 Qualified
    The SA24491 is a high-efficiency synchronous step-down DC-DC converter capable of delivering a load current of 1A. It operates over a wide input voltage range of 4.5V to 36V and integrates main and synchronous MOSFET switches with very low RDS(ON) to minimize conduction loss. 
    The SA24491 uses a peak current control architecture. The switching frequency is adjustable from 300kHz to 2.2MHz using an external resistor.  The SA24491 features ultra-low quiescent current to achieve high efficiency under light load conditions.  Additionally, the internal soft-start function limits inrush current during power-up. 
    The SA24491 is available in a QFN2×2-12 Package.

    Evaluation Board

    • SA24491_1

      Photo of evaluation board

    • SA24491_2

      Photo of evaluation board

    • SA24491_3

      Photo of evaluation board

    • SA24491_4

      Photo of evaluation board

    • SA24491_5

      Photo of evaluation board

    EVB_SA24491TLQ

    The EVB_SA24491TLQ is intended for evaluating high efficiency, 36V input, 1A synchronous step down regulator.

    Technical Documentation