SC4211H Very Low Input /Very Low Dropout 1 Amp Regulator With Enable POPOWER MANAWER MANAGEMENTGEMENT Description Features The SC4211H is a high performance positive voltage u Input Voltage as low as 1.4V regulator designed for use in applications requiring very u 400mV dropout 1A low Input voltage and very low dropout voltage at up to u Adjustable output from 0.5V 1 amperes. It operates with a Vin as low as 1.4V, with u Over current and over temperature protection output voltage programmable as low as 0.5V. The u Enable pin SC4211H features ultra low dropout, ideal for applica- u 10A quiescent current in shutdown tions where Vout is very close to Vin. Additionally, the u Full industrial temperature range SC4211H has an enable pin to further reduce power u Available in SOIC-8-EDP Lead-free package, fully dissipation while shutdown. The SC4211H provides ex- WEEE and RoHS compliant cellent regulation over variations in line, load and tem- perature. Applications u Telecom/Networking cards The SC4211H is available in the SOIC-8-EDP (Exposed u Motherboards/Peripheral cards Die Pad) package. Depending on how the FB pin is con- u Industrial Applications figured, the output voltage can be either externally ad- u Wireless infrastructure justed or fixed to 0.5V. u Set top boxes u Medical equipment u Notebook computers u Battery powered systems Typical Application Circuits SC4211H 4 5 NC NC 3 6 VIN VIN VO VO 2 7 ENABLE EN FB 0.5 (R1+ R2) 1 8 R1 VO = Volts NC GND R2 U1 C1 C2 R2 SC4211H 5 4 NC NC 6 3 VIN VIN VO VO = 0.5V 2 7 ENABLE EN FB 1 8 NC GND U1 C1 C2 Rev. 2.1 1 www.semtech.comSC4211H 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. Parameter Symbol Max Units Vin, EN, Vo, FB to GND 7 V Power Dissipation P Internally Limited W D (1) Thermal Resistance Junction to Ambient 36 C/W JA (1) Thermal Resistance Junction to Case 5.5 C/W JC Operating Ambient Temperature Range T -40 to +85 C A Operating Junction Temperature Range T -40 to +125 C J Storage Temperature Range T -65 to +150 C STG Peak IR Reflow Temperature (10s to 30s) T 260 C P (2) ESD Rating (Human Body Model) V 2 kV ESD Notes: (1) Calculated from package in still air, mounted to 3 x 4.5, 4 layer FR4 PCB with thermal vias under the exposed pad per JESD51 standards, (2) Tested according to JEDEC standard JESD22-A114-B. Electrical Characteristics Unless specified: V = V , V = V V = 1.40V to 6.0V, I = 8mA to 1A. EN IN FB O, IN O Values in bold apply over the full operating temperature range. Parameter Symbol Test Conditions Min Typ Max Units VIN Supply Voltage Range V 1.40 6.0 V IN Quiescent Current I V = 3.3V, I = 0A 3 mA Q IN O V = 6.0V, V = 0V 10 50 A IN EN VO (1) Line Regulation REG I = 10mA 0.2 0.4 %/V (LINE) O (1) Load Regulation REG I = 10mA to 1A 0.5 1.5 % (LOAD) O (1)(2) Dropout Voltage V I = 500mA 100 250 mV DO O 300 2013 Semtech Corp. 2 www.semtech.com