sc202amltrt Semtech Corporation, sc202amltrt Datasheet
sc202amltrt
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sc202amltrt Summary of contents
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... SC202A a versatile device ideal for step-down regulation in products needing high efficiency and a small PCB footprint. SC202A IN IN SNS C OUT IN 4.7µF CTL3 CTL2 GND Lines CTL1 LX CTL0 NC © 2011 Semtech Corporation SC202A With Integrated Inductor and Digital Programmable Output V OUT 0.8V to 3.3V C OUT 10µF 1 ...
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... JA Marking Information 202A yyww xxxx yyww = Date Code xxxx = Semtech Lot Number Ordering Information Device SC202AMLTRT 13 OUT SC202AEVB Notes: 12 OUT (1) Available in tape and reel only. A reel contains 3,000 devices. (2) Lead-free packaging only. Device is WEEE and RoHS compliant 11 OUT and halogen-free. ...
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Absolute Maximum Ratings IN ( ...
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Electrical Characteristics (continued) Parameter Switching Frequency Soft-Start Thermal Shutdown Thermal Shutdown Hysteresis Logic Inputs - CTL0, CTL1, CTL2, and CTL3 Input High Voltage Input Low Voltage Input High Current Input Low Current Notes (1) Maximum output voltage is limited to ...
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Typical Characteristics V = 4.0V for V = 3.3V 3.6V for all others OUT IN Efficiency vs OUT V = 1V, 1.8V, 2.8V, and 3.3V OUT 100 90 3.3V 80 2.8V 70 1.8V 60 ...
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Typical Characteristics (continued 4.0V for V = 3.3V 3.6V for all others OUT IN Frequency vs. Temperature V = 1V, 1.8V, 2.8V, and 3.3V OUT 3.6 3.5 3.4 1.0V 3.3 3.2 3.3V 3.1 3 ...
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Typical Characteristics (continued) Light Load Switching — (50mV/div) OUT V (5V/div (200mA/div) LX Time (400ns�div) Light Load Switching — (50mV/div) OUT V (5V/div (200mA/div) LX Time (400ns�div) Heavy Load Switching — V ...
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Typical Characteristics (continued) Heavy Load Switching — (50mV/div) OUT V (5V/div (200mA/div) LX Time (200ns�div) Heavy Load Soft-start I = 500mA LOAD I (200mA/div (1.0V/div) OUT I (500mA/div) LX Time (40μs�div) Load Transient Response ...
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Typical Characteristics (continued) Load Transient Response — 200 to 500mA V (100mV/div) OUT I (500mA/div (500mA/div) LOAD Time (20μs�div) VID Transient Response — PSAVE 1.2V to 1.8V transition V (500mV/div) OUT I (500mA/div (2V/div) CTL2 Time ...
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Pin Descriptions Pin Pin Name Pin Function Switching node sense pin — for test purposes only 4 SNS Output sense pin — connect to output capacitor for proper sensing of output voltage. Control bit 3 — ...
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Block Diagram OSC & Slope Generator 500mV Ref 5 CTL3 8 CTL2 Voltage Select 7 CTL1 6 CTL0 4 SNS Plimit Amp Control Logic PWM Comp Error Amp PSAVE Nlimit Amp Comp A = pins ...
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Applications Information General Description The SC202A is a synchronous step-down PWM (Pulse Width Modulated) DC-DC regulator utilizing a 3.5MHz fixed-frequency voltage-mode architecture and an inter- nal 1µH inductor. The device is designed to operate in fixed-frequency PWM mode and enter ...
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Applications Information (continued) The resistor values can be determined using the following equation OUT SET SNS where V is the desired output voltage, V OUT setting selected by ...
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Applications Information (continued) setting, optimizing efficiency for all possible load currents in PWM or PSAVE mode. While in PSAVE mode, output voltage regulation is controlled by a series of switching bursts. During a burst, the inductor current is limited to ...
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Applications Information (continued) the device goes through the soft-start process and resumes normal operation. Under-Voltage Lockout UVLO (Under-Voltage Lockout) activates when the supply voltage drops below the falling UVLO threshold. This pre- vents the device from entering an ambiguous state ...
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Applications Information (continued) calculating the minimum value required for C following equation OUT OUT ESR f I OUT The input voltage ripple is at maximum level when the input voltage ...
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Outline Drawing — MLPQ-13 aaa C SEE DETAIL A bbb NOTES PIN 1 E INDICATOR (LASER MARK 0.238 Lx7 bxN 0.800 0.355 ...
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Land Pattern — MLPQ-13 0.55 1. NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING ...
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... Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. Contact Information Semtech Corporation Power Management Products Division 200 Flynn Road, Camarillo, CA 93012 Phone: (805) 498-2111 Fax: (805) 498-3804 www ...