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ZSPM4011BA1W33 Datasheet(PDF) 1 Page - Integrated Device Technology |
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ZSPM4011BA1W33 Datasheet(HTML) 1 Page - Integrated Device Technology |
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1 / 21 page  High Efficiency 1A Synchronous Buck Converter ZSPM4011B Datasheet © 2016 Integrated Device Technology, Inc. 1 January 27, 2016 Brief Description The ZSPM4011B is a DC/DC synchronous switching regulator with fully integrated power switches, internal compensation, and full fault protection. The 1MHz switching frequency enables using small filter components, resulting in reduced board space and reduced bill-of-materials costs. The ZSPM4011B utilizes current mode feedback in normal regulation pulse-width modulation (PWM) mode. When the regulator is disabled (EN pin is low), the ZSPM4011B draws less than 10µA quies- cent current. The ZSPM4011B integrates a wide range of protection circuitry, including input supply under- voltage lockout, output voltage soft start, current limit, VOUT over-voltage, and thermal shutdown. The ZSPM4011B includes supervisory reporting through the PG (Power Good) open drain output to interface other components in the system. Features • Output voltage options (depends on order code): Fixed output voltages: 1.5V, 1.8V, 2.5V, 3.3V, or 5V with +/- 2% output tolerance Adjustable output voltage range: 0.9V to 5.5V with +/- 1.5% reference • Wide input voltage range: 4.5V to 24V • 1MHz +/- 10% fixed switching frequency • 1A continuous output current • High efficiency – up to 95% • Current mode PWM control with pulse- frequency modulation (PFM) mode for improved light load efficiency • Voltage supervisor for V OUT reported at the PG pin • Input supply under voltage lockout • Soft start for controlled startup with no overshoot • Full protection for over-current, over- temperature, and VOUT over-voltage • Less than 10µA in Disabled Mode • Low external component count Benefits • Increased battery life • Minimal external component count (3 capacitors, 1 inductor) • Inherent fault protection and reporting Available Support • Evaluation Kit • Documentation Physical Characteristics • Junction operating temperature -40°C to 125°C • Packaged in a 16pin QFN (3x3mm) Related IDT Products • ZSPM4012B/ZSPM4013B: 2A/3A synchronous buck converters, available with adjustable out- put from 0.9 to 5.5V or fixed output voltages at 1.5V, 1.8V, 2.5V, 3.3V, 5.0V (16-pin 3x3 QFN) • ZSPM1000: >5A single-phase, single-rail, true digital PWM controller (24-lead 4x4mm QFN) ZSPM4011B Application Circuits VOUT Adjustable Output VSW VCC FB BST VCC PG PG RTOP RBOT 10 k Ω (optional) VOUT EN EN CBYPASS LOUT COUT CBST VOUT Fixed Output EN VSW VCC FB VCC EN PG PG 10k Ω (optional) VOUT BST CBYPASS CBST COUT LOUT |
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