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MIC24053 Datasheet(PDF) 1 Page - Microchip Technology |
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MIC24053 Datasheet(HTML) 1 Page - Microchip Technology |
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1 / 32 page  2015 Microchip Technology Inc. DS20005668A-page 1 MIC24053 Features • Hyper Speed Control® Architecture Enables: - High Delta V Operation (VIN = 19V and VOUT = 0.8V) - Small Output Capacitance • 4.5V to 19V Voltage Input • 9A Output Current Capability, Up to 95% Efficiency • Adjustable Output from 0.8V to 5.5V • ±1% Feedback Accuracy • Any Capacitor Stable-Zero-to-High ESR • 600 kHz Switching Frequency • No External Compensation • Power Good (PG) Output • Foldback Current-Limit and “Hiccup Mode” Short-Circuit Protection • Supports Safe Startup into a Pre-Biased Load • –40°C to +125°C Junction Temperature Range • Available in 28-pin 5 mm x 6 mm QFN Package Applications • Servers, Workstations • Routers, Switches, and Telecom Equipment • Base Stations General Description The MIC24053 is a constant-frequency, synchronous buck regulator featuring a unique adaptive on-time control architecture. The MIC24053 operates over an input supply range of 4.5V to 19V and provides a regulated output of up to 9A of output current. The output voltage is adjustable down to 0.8V with a guaranteed accuracy of ±1%, and the device operates at a switching frequency of 600 kHz. The Hyper Speed Control® architecture allows for ultra-fast transient response while reducing the output capacitance and also makes (High VIN)/(Low VOUT) operation possible. This adaptive tON ripple control architecture combines the advantages of fixed-frequency operation and fast transient response in a single device. The MIC24053 offers a full suite of features to ensure protection of the IC during fault conditions. These include undervoltage lockout to ensure proper operation under power-sag conditions, internal soft-start to reduce inrush current, foldback current limit, “hiccup mode” short-circuit protection, and thermal shutdown. An open-drain Power Good (PG) pin is provided. pin is provided. Typical Application Circuit MIC24053 5x6 QFN VDD PVDD SW FB 2.49k 2.00k PG 0.1μF 19.6k 2.2μF VOUT 1.8V/9A 2.2μH SGND 100μFx2 MIC24053 PG 4.7nF 0.1μF BST 4.7μF x2 PGND PVIN VIN 4.5V to 19V EN EN 10k CS VIN 10k 12V, 9A High-Efficiency Buck Regulator with Hyper Speed Control |
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