SC4213HEVB

SC4213H Very Low Input /Very Low Dropout 0.5 Amp Regulator With Enable POWER MANAGEMENT Features         Description The SC4213H is a high performance positive voltage regulator designed for use in applications requiring very low input voltage and very low dropout voltage at up to 0.5 amperes. It operates with a Vin as low as 1.4V. The SC4213H features ultra low dropout, ideal for applications where Vout is very close to Vin. Additionally, the SC4213H has an enable pin to further reduce power dissipation while shutdown. The SC4213H provides excellent regulation over variations in line, load and temperature. The SC4213H is available in an SOIC-8 package. The output voltage can be set via an external divider as shown in the typical application circuit. Input Voltage as low as 1.4V 75mV dropout @ 0.5A Adjustable output from 0.5V Over current and over temperature protection Enable pin 10µA quiescent current in shutdown Full industrial temperature range Fully WEEE and Halogen free. RoHS compliant Applications         Telecom/Networking cards Motherboards/Peripheral cards Industrial applications Wireless infrastructure Set top boxes Medical equipment Notebook computers Battery powered systems Typical Application Circuit U1 VIN ENABLE C1 SC4213H NC VO FB GND R2 R1 C2 NC VIN EN NC VO = 0.5(R1 + R2) R2 V July 27, 2010 © 2010 Semtech Corporation 1 SC4213H Pin Configuration Ordering Information Device SC4213HSTRT(1)(2) SC4213HEVB Package SOIC-8 Evaluation Board Notes: (1) Available in tape and reel only. A reel contains 2,500 devices. (2) Available in lead-free packaging only. WEEE compliant and Halogen free. This component and all homogenous subcomponents are RoHS compliant. Marking Information 3H © 2010 Semtech Corporation 2 SC4213H Absolute Maximum Ratings VIN, EN, VO, FB to GND (V) . . . . . . . . . . . . . . . . . . -0.3 to +7.0 Power Dissipation . . . . . . . . . . . . . . . . . . . . . Internally Limited ESD Protection Level (kV) . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 (1) Recommended Operating Conditions VIN (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4 < VIN < 6.0 Ambient Temperature Range (°C) . . . . . . . . . -40 < TA < +105 Junction Temperature Range (°C) . . . . . . . . . -40 < TJ < +125 Maximum Output Current (A) . . . . . . . . . . . . . . . . . . . . . . . . . 1 Thermal Information Thermal Resistance, Junction to Ambient(2)(°C/W) . . . . . 105 Thermal Resistance, Junction to Case(2) (°C/W) . . . . . . . . Maximum Junction Temperature (°C) . . . . . . . . . . . . . . Peak IR Reflow Temperature (10s to 30s) (°C) . . . . . . 47 +150 +260 Storage Temperature Range (°C) . . . . . . . . . . . . -65 to +150 Exceeding the above specifications may result in permanent damage to the device or device malfunction. Operation outside of the parameters specified in the Electrical Characteristics section is not recommended. NOTES: (1) Tested according to JEDEC standard JESD22-A114-B. (2) 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. Electrical Characteristics Unless specified: VEN = VIN, VFB = VO, VIN = 1.40V to 6.0V, IO = 10µA to 0.5A, TA = 25° C. Values in bold apply over the full operating temperature range. Parameter VIN Symbol Conditions Min Typ Max Units Quiescent Current VO IQ VIN = 3.3V, IO = 0A VIN = 6.0V, VEN =0V 10 3 50 mA µA VIN= VO + 0.5V, IO = 10mA Output Voltage(1) (Fixed Voltage, VFB = VO) VO VIN = 1.8V, IO = 0.5A, 0°C ≤ TJ = TA ≤85°C 1.40V ≤ VIN ≤ 6.0V, IO = 10mA Line Regulation(1) Load Regulation(1) Minimum Load Current(3) Current Limit REG (LINE) REG(LOAD) IO ICL IO =10mA IO =10mA to 0.5A -2% VO -3% 0.2 0.5 +2% V +3% 0.4 1.5 10 %/V % µA A 1.5 © 2010 Semtech Corporation 3 SC4213H Electrical Characteristics (continued) Parameter Dropout Voltage(1)(2) Feedback 0.495 Reference Voltage(1) VREF IADJ VIN = 3.3V, VFB = VOUT , IO =10mA VFB = VREF 0.5 0.490 80 0.510 200 nA 0.505 V Symbol VDropout IO=0.5A Conditions 1.4V ≤VIN