LT8612IUDE#WPBF

LT8612 42V, 6A Synchronous Step-Down Regulator with 3µA Quiescent Current DESCRIPTION FEATURES n n n n n n n n n n n n n n Wide Input Voltage Range: 3.4V to 42V Ultralow Quiescent Current Burst Mode® Operation: n 3μA I Regulating 12V to 3.3V Q IN OUT n Output Ripple < 10mV P-P High Efficiency Synchronous Operation: n 95% Efficiency at 3A, 5V OUT from 12VIN n 94% Efficiency at 3A, 3.3V ...
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Технические характеристики

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Корпус QFN-28 WQFN-28
Режим преобразования
Входное напряжение
Максимальный выходной ток
Кол-во выходов
Частота преобразования
Встроенные возможности Синхронизация внешним сигналом
Рабочая температура
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LT8612 42V, 6A Synchronous Step-Down Regulator with 3µA Quiescent Current DESCRIPTION FEATURES n n n n n n n n n n n n n n Wide Input Voltage Range: 3.4V to 42V Ultralow Quiescent Current Burst Mode® Operation: n 3μA I Regulating 12V to 3.3V Q IN OUT n Output Ripple < 10mV P-P High Efficiency Synchronous Operation: n 95% Efficiency at 3A, 5V OUT from 12VIN n 94% Efficiency at 3A, 3.3V OUT from 12VIN Fast Minimum Switch-On-Time: 40ns Low Dropout Under All Conditions: 250mV at 3A Allows Use of Small Inductors Safely Tolerates Inductor Saturation in Overload Conditions Adjustable and Synchronizable: 200kHz to 2.2MHz Current Mode Operation Accurate 1V Enable Pin Threshold Internal Compensation Output Soft-Start and Tracking Small Thermally Enhanced 3mm × 6mm 28-Lead QFN Package AEC-Q100 Qualified for Automotive Applications All registered trademarks and trademarks are the property of their respective owners. APPLICATIONS n n n The LT®8612 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator that consumes only 3µA of quiescent current. Top and bottom power switches are included with all necessary circuitry to minimize the need for external components. Low ripple Burst Mode operation enables high efficiency down to very low output currents while keeping the output ripple below 10mVP-P. A SYNC pin allows synchronization to an external clock. Internal compensation with peak current mode topology allows the use of small inductors and results in fast transient response and good loop stability. The EN/UV pin has an accurate 1V threshold and can be used to program VIN undervoltage lockout or to shut down the LT8612 reducing the input supply current to 1µA. A capacitor on the TR/SS pin programs the output voltage ramp rate during start-up. The PG flag signals when VOUT is within ±9% of the programmed output voltage as well as fault conditions. The LT8612 is available in a small 3mm × 6mm 28-lead QFN package with exposed pad for low thermal resistance. Automotive and Industrial Supplies General Purpose Step-Down GSM Power Supplies TYPICAL APPLICATION Efficiency at 5VOUT 5V 6A Step-Down Converter 100 VIN 10µF BST EN/UV PG SYNC 10nF 1µF LT8612 0.1µF 3.9µH SW BIAS TR/SS FB 1M 10pF INTVCC RT PGND GND 60.4k fSW = 700kHz VIN = 12V 95 VOUT 5V 100µF 6A 1210 VIN = 24V 90 EFFICIENCY (%) VIN 5.6V TO 42V 85 80 75 70 65 243k 60 8612 TA01a L: EPCOS B82559 fSW = 700kHz L = 3.9µH 0 1 4 3 2 LOAD CURRENT (A) 5 6 8612 TA01b Rev. B Document Feedback For more information www.analog.com 1 PDF
Документация на серию LT8612 

LT8612 (Rev. B) 42V, 6A Synchronous Step-Down Regulator with 3µA Quiescent Current

Дата модификации: 09.08.2021

Размер: 1.57 Мб

22 стр.

    Публикации 1

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    27 октября 2021
    статья

    Компактный настольный источник питания CN-0508 от Analog Devices мощностью 75 Вт

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