SC195 3.5MHz, 500mA Synchronous Step Down DC-DC Regulator POWER MANAGEMENT Features Description Input Voltage 2.9V to 5.5V The SC195 is a high efficiency, 500mA step down regula - Output Voltage 0.8V to 3.3V tor designed to operate with an input voltage range of Output current capability 500mA 2.9V to 5.5 V. The input voltage range makes it ideal for Efficiency up to 94% battery operated applications with space limitations. The 15 Programmable output voltages SC195 also includes ffi teen programmable output voltage High light-load efficiency via automatic PSAVE mode settings that can be selected using the four control pins, Fast transient response eliminating the need for external feedback resistors. The Oscillator frequency 3.5MHz output voltage can be xfi ed to a single setting or dynami - 100% duty cycle capability cally switched between dieff rent levels. Pulling all four Quiescent current 38A typ control pins low disables the output. Shutdown Current 0.1A typ The SC195 operates at a xfi ed 3.5MHz switching frequency Internal soft-start in normal PWM (Pulse-Width Modulation) mode. A vari- Over-voltage protection able frequency PSAVE (power-save) mode is used to Current limit and short circuit protection optimize efficiency at light loads for each output setting. Over-temperature protection Built-in hysteresis prevents chattering between the two Under-voltage lockout modes. Floating control pin protection MLPQ-UT8 1.5 x 1.5 x 0.6 (mm) package The SC195 provides several protection features to safe- Pb free, halogen free, and RoHS/WEEE compliant guard the device under stressed conditions. These Applications include short circuit protection, over-temperature protec- tion, under-voltage lockout, and soft-start to control Smart phones and cellular phones in-rush current. These features, coupled with the small MP3/Personal media players 1.5 x 1.5 x 0.6 (mm) package make the SC195 a versatile Personal navigation devices device ideal for step-down regulation in products needing Digital cameras high efficiency and a small PCB footprint. Single Li-ion cell or 3 NiMH/NiCd cell devices Devices with 3.3V or 5V internal power rails Typical Application Circuit SC195 L V X IN IN 1.0H 2.9V to 5.5V V C O U T IN LX 0.8V to 3.3V 4.7F O U T C TL3 C O U T 10F C TL2 C ontrol Logic G N D Lines C TL1 C TL0 Rev 2.1 2015 Semtech Corporation 1SC195 Pin Configuration Ordering Information Device Package C TL3 (1)(2) SC195ULTRT MLPQ-UT8 1.5 x 1.5 SC195EVB Evaluation Board 8 Notes: C TL2 1 7 IN (1) Available in tape and reel only. A reel contains 3,000 devices. (2) Lead-free packaging only. Device is WEEE and RoHS compliant TO P V IE W and halogen-free. 2 C TL1 6 LX 3 C TL0 5 G N D 4 O U T MLPQ-UT8 1.5 x 1.5, 8 LEAD = 116C/W JA Table 1 Output Voltage Settings CTL3 CTL2 CTL1 CTL0 Vout 0 0 0 0 Shutdown Marking Information 0 0 0 1 0.80 0 0 1 0 1.00 0 0 1 1 1.20 0 1 0 0 1.40 0 1 0 1 1.50 0 1 1 0 1.60 0J 0 1 1 1 1.80 1 0 0 0 1.85 yw 1 0 0 1 1.90 1 0 1 0 2.00 1 0 1 1 2.20 1 1 0 0 2.50 0J = SC195 1 1 0 1 2.80 yw = Date code 1 1 1 0 3.00 1 1 1 1 3.30 2