SC632A 1MHz Fixed 5.0V Output Charge Pump Regulator POWER MANAGEMENT Features Description The SC632A is a high-current voltage regulator using Input voltage range 2.95V to 5.5V Semtechs proprietary low-noise charge pump technol- V tolerance 5.0V 3% OUT ogy. The charge pump provides a low EMI solution Continuous output current 275mA compared to inductive boost regulators. Performance is Peak output current 400mA optimized for use in single Li-Ion battery cell applications. Three charge pump modes x, .5x and 2x The regulator provides the performance of a linear, low Output ripple voltage 50mV , typical PP drop-out (LDO) voltage regulator when the input is greater Short circuit, over-voltage, and over-temperature than 5.0V. Unlike an LDO, drop-out is avoided when the protection input is less than 5.0V. Instead, a charge pump is activated Soft-start functionality to provide voltage boost and the head-room needed for Shutdown current 0. A, typical voltage regulation. Ultra thin package 2 x 2 x 0.6 (mm) Lead-free and halogen-free The SC632As charge pump has three modes of operation: WEEE and RoHS compliant 2x, .5x, and x modes. 2x and .5x are voltage boost modes that deliver current to the load in each of two Applications phases. The x mode turns off the charge pump, deliver - ing current through an LDO. Hysteresis is provided to Mobile phones prevent chatter between charge pump modes. When Tablets active, the charge pump provides low-ripple operation at USB On-The-Go MHz. Typically the output ripple is 50mVpp at the Multi-LED backlit LCDs maximum continuous current rating of 275mA. Compact flash/CF+ products Digital video cameras A small 2.2F capacitor is recommended for all four capaci- tors. The full rated output current is provided when 2.2F DVI/HDMI ports is used for both bucket capacitors. At the output, a 2.2F Wi-Fi base stations capacitor decouples the load and provides smoothing for Modems mode transitions, while another 2.2F is used to decouple Set-top boxes the input. Typical Application Circuit V = 5.0V 275mA OUT IN OUT C C IN OUT V BAT 2.2F 2.2F SC632A Chip C1+ EN C 1 enable C1- 2.2F C2+ C 2 C2- GND 2.2F US Patent: 7,808,220 Revision .0 20 Semtech Corporation SC632A Pin Configuration Ordering Information Device Package ( )(2) SC632AULTRT MLPD-UT-8 2x2 SC632AEVB Evaluation Board Notes: ( ) Available in tape and reel only. A reel contains 3,000 devices. GND C2- 1 8 (2) Lead-free packaging only. Device is WEEE and RoHS compliant, TOP VIEW and halogen-free. C1+ 2 7 C2+ C1- 3 6 OUT T IN 5 EN 4 MLPD-UT-8 2x2, 8 LEAD = 68C/W JA Marking Information K2A yw Yw = Datecode 2