RICHTEK RT8239BGQW RT8239B JC=CF JC=ED JC=IC JC=EA Power Controller

£5.49

Condition: New

RT8239ABC Datasheet

Only 2 item(s) left in stock.
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  •   Size Guide

    Size Guide

    Size Chest Waist Hips
    XS 34 28 34
    S 36 30 36
    M 38 32 38
    L 40 34 40
    XL 42 36 42
    2XL 44 38 44

    All measurements are in INCHES

    and may vary a half inch in either direction.

    Size Chest Waist Hips
    2XS 32 26 32
    XS 34 28 34
    S 36 30 36
    M 38 32 38
    L 40 34 40
    XL 42 36 42

    All measurements are in INCHES

    and may vary a half inch in either direction.

    Size Chest Waist Hips
    XS 34 28 34
    S 36 30 36
    M 38 32 38
    L 40 34 40
    XL 42 36 42
    2XL 44 38 44

    All measurements are in INCHES

    and may vary a half inch in either direction.

  •  Delivery & Return

    Delivery

    We ship worldwide (except batteries). Order will be shipped by shipping method chosen at the checkout. Always free shipping for multiple item orders over ÂŁ200. During holidays and summer periods the delivery time may be longer than normal.

    Return

    Chipbay will accept exchanges and returns of purchased goods within 30 days of the date of purchase (14 days during the sales period). Your return will usually be processed within 1-3 days. We’ll send you a Return Notification email to notify you once the return has been completed. Please allow 1-3 business days for refunds to be received to the original form of payment once the return has been processed.

    Help

    Give us a shout if you have any other questions and/or concerns.
    Email: [email protected]
    Phone: +44 1733806223
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High Efficiency, Main Power Supply Controller

  The RT8239A/B/C is a dual step down, Switch Mode Power Supply (SMPS) controller which generates logic supply voltages for battery powered systems. It includes two Pulse Width Modulation (PWM) controllers adjustable from 2V to 5.5V and also two fixed 5V/3.3V linear regulators. One of the controllers (LDO5) provides automatic switch over to the BYP1 input connected to the main SMPS1 output for maximized efficiency. An optional external charge pump can be monitored through SECFB (RT8239B/C). Other features include on board power up sequencing, a power good output, internal soft-start, and a soft discharge output that prevents negative voltage during shutdown. A constant on-time PWM control scheme operates without sense resistors and assures fast load transient response while maintaining nearly constant switching frequency. To eliminate noise in audio applications, an ultrasonic mode is included, which maintains the switching frequency above 25kHz. Moreover, a diode emulation mode maximizes efficiency for light load applications. The SMPS1/SMPS2 switching frequency can be adjustable from 200kHz/233kHz to 400kHz/466kHz respectively. The RT8239A/B/C is available in a WQFN-20L 3×3 package, and operates over an extended temperature range from -40°C to 85°C.

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SKU: 121706650869 Category:
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