SC1592 Low Dropout High Performance Adjustable Positive Voltage Regulator POWER MANAGEMENT Description Features The SC1592 is a 3A low dropout high performance Wide input range, V = 1.25V to 16V, IN linear voltage regulator, that provides a low voltage, high V = 3V to 16V CNTL current output with a minimum of external components, 3A Guaranteed Output Current utilizing dual supply configuration. 260mV (typ) 3A dropout voltage in dual supply mode The SC1592 offers a wide input voltage range from 1.25V 1% Initial Accuracy to 16V and is ideal for applications that need to convert Adjustable output voltage, down to 0.8V down to 0.8V. Programmable current limiting and thermal shutdown Additionally, the SC1592 is fully protected with an exter- Fast transient response nally programmable current limit, and thermal shutdown. Excellent line and load regulation Also, there is an EN input which enables or shuts down Power SO-8 and 7-lead DDPAK the device. The SC1592 voltage regulator is available in 7-lead DDPAK Applications and SOIC-8L EDP packages. Low voltage logic supplies Microprocessor and chipset supplies Split plane microprocessor supplies Advanced graphics cards supplies Sound cards and auxiliary power supplies SMPS post regulator Typical Application Circuit +3.3V Vcntl +1.8V Vout CNTL OUT C1 C3 1uF R2 47uF(cer) SC1592 66.5 +2.5V Vin IN SENSE R2 GND EN ILIM C2 V = (1 + ) V OUT REF R3 R3 10uF 53 V = 0.8V typ. REF R1 TTL 100 1 www.semtech.com Revision: November 21, 2011SC1592 POWER MANAGEMENT Absolute Maximum Ratings Exceeding the specifications below may result in permanent damage to the device, or device malfunction. Operation outside of the parameters specified in the Electrical Characteristics section is not implied. Plarameter Smymbo Msaximu Unit PVower Input Voltage 1V8 IN CVontrol Input Voltage 1V8 CNTL OIutput Current 5A OUT PPower Dissipation IWnternally Limited D Thermal Resistance Junction to Ambient DDPAK (1sq. in.) 29 C/W JA SOIC-8L EDP (1sq. in.) 36.5 Thermal Resistance Junction to Case DDPAK 3 C/W JC SOIC-8L EDP 5.5 JTunction Temperature Range -C40 to +125 J STtorage Temperature Range -C65 to +150 STG LTead Temperature (Soldering) 10 Sec. 3C00 LEAD EDSD Rating (Human Body Model) E2S kV Electrical Characteristics Unless specified: V = 2.5V, V = V = 3.3V, V = 1.8V, I = 10mA, R = 100, T = T = 25C. IN EN CNTL OUT OUT LIM J A Values in bold indicate -40C < T < +125C. J PlarameterSsymboTnest Condition Mpi Txy Msa Unit CVontrol Voltage V = V 361 V CNTL OUT REF RVeference Voltage V = V 792 800 808 mV REF OUT REF CIontrol Pin Current V = V = V = 16V 3 8 CNTL EN CNTL IN EN V = V I = 0 mA OUT REF O V = V = V = 16V 24 CNTL IN EN V = V I = 3A OUT REF O Control Pin Current in I V = V = 16V 1 5 A CNTL DIS CNTL IN Shutdown V = 0 EN VLGine Regulation RE 2.5V V 116V 0.0 0.1 %/V IN (LINE) IN VLGine Regulation RE 3.3V V 16V, 0.1 0.4 %/V CNTL (CNTL) CNTL V = V OUT REF (1) Load Regulation REG 10mA I 2A, T=825C 05. 1%. (LOAD) OUT J 10mA I 3A, -40 < T<4125C 1. 3 % OUT J DVropout Voltage I = 2A V=00.98 Vnom 16 320 mV DO OUT OUT I = 3A V=00.98 Vnom 26 520 OUT OUT 2011 Semtech Corporation 2 www.semtech.com