SA26012VDQ-Products-Silergy Corp

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SA26012VDQ

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High Efficiency, 7V/12A Synchronous Step Down Regulator
Datasheet
SA26012VDQ High Efficiency, 7V/12A Synchronous Step Down Regulator Datasheet
    Part numberSA26012VDQ
    Channel(#)1
    Vin (min) (V)2.8
    Vin (max) (V)7
    Switching frequency (min)(kHz)600
    Switching frequency (max)(kHz)1000
    Vout (min) (V)0.6
    Vout (max) (V)5
    Iout (max) (A)12
    Vout2 (min)(V)
    Vout2 (max )(V)
    Iout2 (max)(A)
    Vref accuracy (±%)1
    Vout accuracy(±%)
    Control modeConstant on time
    Duty cycle (max)(%)88
    Operation modePFM/FCCM
    Iq (typ) (uA)650
    FeaturesEnable, Power good, Auto-discharge, Adjustable soft-start, UVP with hiccup, Low ISD, Adjustable switching frequency, Cycle by cycle overcurrent protection, Forced PWM or PFM, Pre-bias startup
    PackageQFN3×4-19
    Operating temperature range(°C)-40 to 125
    Functional safety category

    ·       Input Voltage Range: 2.8V-7V

    ·       Internal 12.6mΩ Power Switch and 4.3mΩ Synchronous Rectifier

    ·       Accurate Reference: 0.6V ±1%

    ·       Differential Remote Sense

    ·       Fast Transient Response

    ·       600kHz, 800kHz and 1000kHz Operating Frequency

    ·       Selectable Automatic High-efficiency Discontinuous Operating Mode at Light Loads

    ·       Programmable Valley Current Limit

    ·       Reliable Built-in Protections:

    ־   Automatic Recovery for Input Under-voltage (UVLO), Output Under-voltage (UVP) and Over-temperature (OTP) Conditions

    ־   Cycle-by-cycle Valley and Peak Current Limit (OCP)

    ־   Cycle-by-cycle Reverse Current Limit

    ·       Internal and Adjustable Soft-Start to Limit Inrush Current

    ·       Smooth Pre-Biased Startup

    ·       Power Good Output Monitor for Undervoltage and Overvoltage Detection

    ·       Package: QFN3×4-19

    ·       Automotive AEC- Q100 Grade 1 Certified

    ·       MSL Rating: MSL1

    The SA26012 is a high-efficiency synchronous step-down DC/DC regulator featuring internal power and synchronous rectifier MOSFETs capable of delivering 12A of continuous output current over a wide input voltage range from 2.8V to 7V.

    Silergy’s proprietary Instant-PWM™ fast-response, constant-on-time (COT) PWM control method supports high input/output voltage ratios (low duty cycles) and responds to load transients within ~100ns while maintaining a near constant operating frequency over line, load and output voltage ranges. This control method provides stable operation without complex compensation, even with low ESR ceramic output capacitors.

    The stable internal reference (VREF) provides ±1% accuracy over TJ= -40°C to 125°C, and the differential input sense configuration allows the feedback sensing at the most relevant load point.

    Internal 12.6mΩ power and 4.3mΩ synchronous rectifier MOSFETs provide excellent efficiency for a wide range of applications, especially for low output voltages and low duty cycles. Cycle-by-cycle current limit, input under-voltage lock-out, internal soft-start, output under-voltage/over-voltage protections, and thermal shutdown provide safe operation in all operating conditions.

    The SA26012 is available in a compact QFN3×4-19 package.

    Technical Documentation