Microchip AT9919K7-G

Manufacturer No:

AT9919K7-G

Manufacturer:

Microchip

Package:

8-WDFN Exposed Pad

Description:

HYSTERETIC, BUCK, HIGH BRIGHTNESS LED DRIVER WITH HIGH-SIDE CURRENT SENSING

Quantity:

Delivery:

Payment:

In Stock :Available

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AT9919K7-G information

Microchip AT9919K7-G technical specifications, attributes, parameters and parts with similar specifications to Microchip AT9919K7-G.

Type
Parameter

Topology
Buck

+Vin min (V)
4.5

+Vin max (V)
40

Output Current
External FET

Dimming
PWM

Package
DFN-8

Download datasheets and manufacturer documentation for Microchip AT9919K7-G.

Data Sheets:

223948e220d80b6aefc0430144369c3d.pdf

User Guide:

e9fbd037da1577172a29c5b68becf22d.pdf

The AT9919 is a PWM controller IC designed to drive high brightness LEDs using a buck topology. It operates from an input voltage of 4.5 to 40VDC and employs hysteretic control with a high-side current sense resistor to set the constant output current. The operating frequency range can be set by selecting the proper inductor. Operation at high switching frequency is possible since the hysteretic control maintains accuracy even at high frequencies. This permits the use of small inductors and capacitors minimizing space and cost in the overall system. LED brightness control is achieved with PWM dimming from an analog or PWM input signal. Unique PWM circuitry allows true constant color with a high dimming range. The dimming frequency is programmed using a single external capacitor. The AT9919 comes in a small, 8-Lead DFN package and is qualified for automotive LED lighting applications.

Hysteretic control with high-side current sensing
Wide input voltage range: 4.5 to 40V
>90% Efficiency
Typical ±5% LED current accuracy
Up to 2.0MHz switching frequency
Adjustable constant LED current
Analog or PWM control signal for PWM dimming
Over-temperature protection
-40ºC to +125ºC operating temperature range
AEC-Q100 compliant

User Guide

PURCHASE

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IMPORTANT NOTICE

Quotations are subject to stock availability and may vary with market conditions. Prices and lead times are not guaranteed until a purchase order is confirmed. Ensure your contact details are correct to avoid delays in response.

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SHIPPING COST

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SHIPPING METHOD

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DELIVERY TIME

1. Once the goods are shipped, estimated delivery time depends on the shipping methods you chose: FedEx International, 5-7 business days.
2. For in-stock parts, orders normally could be shipped out within 1-2days.