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SC3203 Datasheet(PDF) 1 Page - Semtech Corporation |
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SC3203 Datasheet(HTML) 1 Page - Semtech Corporation |
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1 / 20 page  © 2015 Semtech Corporation POWER MANAGEMENT 1 SC3203 3A EcoSpeed® Step-Down Regulator with Power Save Typical Application Circuit Rev 2.1 Features Input voltage — 9V to 16V Programmable VIN UVLO Output voltage adjustable from 0.75V to 7.5V Output current — Up to 3A Internal reference — + 2% Supports ceramic capacitors Low component count Power good output (open-drain) Low RDS ON mosfets 65mΩ low-side/100mΩ high-side ENABLE input Programmable VIN UVLO and hysteresis VIN Under-Voltage Lock Out 500kHz switching frequency Adaptive on-time control: Excellent transient response Pseudo-fixed frequency during CCM Fault protection features: Over-current/Over-voltage/Under-voltage Over-temperature Automatic Restart (Hiccup) Internal soft-start Start-up into pre-bias output Power Save and Smart Power Save Internal LDO for bias voltage SOIC8-EP5 lead-free package WEEE and RoHS compliant and halogen-free • • • • • • • • Description The SC3203 is an integrated, synchronous 3A EcoSpeed® step-down regulator. It incorporates Semtech’s advanced, patented adaptive on-time architecture to achieve best- in-class dynamic performance using point-of-load appli- cations. The input voltage range is 9V to 16V, and the output voltage is adjustable from 0.75V to 7.5V. The device features an internal LDO and automatic PSAVE mode for high efficiency across the output load range. Switching frequency is internally programmed to 500kHz. Semtech’s adaptive on-time control provides pseudo-fixed frequency operation in continuous conduction combined with excellent transient performance. Additional features include cycle-by-cycle current limit, soft start, output over voltage and over temperature pro- tection, and automatic fault recovery. The open-drain PGOOD pin provides output status. The device is available in a lead-free SOIC8-EP5 package. Applications Consumer Electronics, DTV and Set-top Boxes Networking Equipment, Embedded Systems Medical Equipment, Office Automation Instrumentation, Portable Systems Point of Load Converters EN VIN PG O O D BYP LX BST VOUT Enable VIN VFB RPGOOD L RTOP RBOT PAD AG ND 1µ PG O O D 3.3V SC3203 10n CTOP COUT CIN 49.9Ω |
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