SC728CSTRT Semtech

SC728/SC729 2A Low Vin, Very Low Ron Load Switch POWER MANAGEMENT Features Description The SC728/SC729 is a low input voltage, very low Ron Input Voltage Range 1.1V to 3.6V load switch designed for use in battery powered applica- 2A Continuous Output Current tions. Very low quiescent current of less than 2A, and a Ultra-Low Ron 36m low shutdown current of less than 1A (SC728) reduces Automatic Output Discharge Circuit power loss during Standby and Off states. A logic level Fast Turn-on Option With No Output Discharge Enable allows low voltage on/off control down to 1.1V. Circuit SC728 Extended Soft Start Option With Automatic Out- The SC728 provides a quick turn on time, while the SC729 put Discharge Circuit SC729 provides a longer soft start to limit inrush current. The Low Quiescent Current 0.81A(Typ.) SC729 also features an automatic discharge circuit which Low Shutdown Current < 1A SC728 discharges the output when the part is disabled. 1.1V Logic Level Enable Compatible With CMOS/GPIO Control The SC728/SC729 is offered in an ultra-small 4-bump Hardened ESD Protection 3kV 0.76mm 0.76mm Chip Scale Package (CSP) which Package: CSP 0.76mm 0.76mm, 0.4mm Pitch enables very small board area implementations. The SC728/SC729 has an operating ambient temperature range of -40C to +85C. SC724/SC725 offers an alternative bump connection Applications pattern to SC728/SC729. Please go to Semtech.com Smart Phones website for details. Tablet PCs Automatic GPS Devices Device Package Rising Time Discharge Battery Powered Equipment Other Portable Device SC728 CSP No 3s(Typ.) SC729 CSP Yes 140s(Typ.) Typical Application Circuit SUPPLY VVIINN VOUT LOAD 1F 1F SC728 / SC729 EN GND ENABLE Rev. 2.2 1 2015 Semtech CorporationSC728/SC729 Pin Configuration Ordering Information Device Package TO P V IE W SC728CSTRT CSP 0.76mm0.76mm 4-bump (B U M P S O N TH E B O TTO M ) SC729CSTRT CSP 0.76mm0.76mm 4-bump SC728EVB Evaluation Board A 1 A 2 SC729EVB Evaluation Board Notes: B 1 B 2 (1) Available in tape and reel only. A reel contains 5,000 devices. (2) Lead-free packaging only. Device is WEEE and RoHS compliant, and halogen free. CSP 0.76x0.76, 4 Bump Pin Descriptions Pin Pin Pin Function Name A2 VIN Input Voltage. Enable input. A 5.5M internal resistor is connected from this pin to GND. Drive HIGH to turn on the switch B2 EN drive LOW to turn off the switch. When the EN pin is floated, the switch is OFF. A1 VOUT Output Voltage. B1 GND Ground. 2