SC183C 2.5MHz, 2A Synchronous Step-Down Regulator POWER MANAGEMENT Features Description The SC183C is a 2A synchronous step-down regulator V Range: 2.9 5.5V IN designed to operate with an input voltage range of 2.9 to V Options: 0.8 - 3.3V OUT 5.5 Volts. The device oeff rs ffi teen pre-determined outputs Up to 2A Output Current voltages via four control pins programmable from 0.8 to Ultra-Small Footprint, <1mm Height Solution 3.3 Volts. The control pins allow for on-the-fly voltage 2.5MHz Switching Frequency changes, enabling system designers to implement Efficiency Up to 93% dynamic power savings. The SC183C is also capable of adjusting output voltage via an external resistor divider. Low Output Noise Across Load Range Excellent Transient Response The device operates with a fixed 2.5MHz oscillator fre - Start Up into Pre-Bias Output quency, allowing the use of small surface mount external 100% Duty-Cycle Low Dropout Operation components. <1A Shutdown Current Internal Soft Start Connecting CTL0 CTL3 to logic low forces the device into shutdown mode reducing the supply current to less Input Under-Voltage Lockout than 1A. Connecting any of the control pins to logic Output Over-Voltage, Current Limit Protection high enables the converter and sets the output voltage Over-Temperature Protection according to Table 1. Other features include under- Adjustable Output Voltage voltage lockout, soft-start to limit in-rush current, and 3mm x 3mm x 0.6mm thermally enhanced over-temperature protection. MLPQ-UT16 package Pb-free, Halogen free, and RoHS/WEEE compliant The SC183C is available in a thermally-enhanced, 3mm x 3mm x 0.6mm MLPQ-UT16 package. Applications Office Automation and Computing Set-Top Box LCD TV Network Cards Printer Typical Application Circuit L 1.0H V V LX PVIN OUT IN 1.50V / 2.0A C IN SC183C C R OUT 10F AVIN 22F 10 VOUT AVIN C AVIN 1F CTL0 CTL0 CTL1 CTL1 CTL2 CTL2 PGND CTL3 CTL3 AGND November 19, 2010SC183C Pin Configuration Ordering Information Device Package (2)(3) SC183CULTRT 3mm x 3mm x 0.6mm MLPQ-UT16 (4) SC183CEVB Evaluation Board 16 15 14 13 Notes: (1) Calculated from package in still air, mounted to 3 x 4.5, 4 layer FR4 PCB 1 12 PGND PVIN with thermal vias under the exposed pad per JESD51 standards. TOP VIEW (2) Available in tape and reel only. A reel contains 3,000 devices. (3) Device is Pb-free, Halogen free, and RoHS/WEEE compliant. 2 11 PGND PVIN (4) Please specify the VOUT when ordering. VOUT AGND 3 10 T 4 9 NC AVIN 5 6 7 8 3mm x 3mm x 0.6mm MLPQ-UT16 Table 1 Output Voltage Settings (1) = 40C/W JA CTL3 CTL2 CTL1 CTL0 Output Voltage 0 0 0 0 Shutdown 0 0 0 1 0.80 Marking Information 0 0 1 0 1.00 0 0 1 1 1.025 0 1 0 0 1.05 0 1 0 1 1.20 0 1 1 0 1.25 0 1 1 1 1.30 1 0 0 0 1.50 1 0 0 1 1.80 1 0 1 0 2.20 1 0 1 1 2.50 Marking for 3mm x 3mm MLPQ-UT 16 Lead Package: yyww = Datecode (Example: 0852) 1 1 0 0 2.60 xxxx = Semtech Lot number (Example: E901) 1 1 0 1 2.80 1 1 1 0 3.00 1 1 1 1 3.30 2010 Semtech Corp. www.semtech.com 2 LX CTL0 LX CTL1 LX CTL2 PGND CTL3