SC728 Datasheet, PDF (1/15 Pages) Semtech Corporation – 2A Low Vin, Very Low Ron Load Switch

POWER MANAGEMENT
Features
 Input Voltage Range – 1.1V to 3.6V
 2A Continuous Output Current
 Ultra-Low Ron – 36mΩ
 Automatic Output Discharge Circuit
 Fast Turn-on Option With No Output Discharge
Circuit – SC728
 Extended Soft Start Option With Automatic Out-
put Discharge Circuit – SC729
 Low Quiescent Current – 0.81µA(Typ.)
 Low Shutdown Current < 1µA – SC728
 1.1V Logic Level Enable Compatible With CMOS/GPIO
Control
 Hardened ESD Protection 3kV
 Package: CSP – 0.76mm × 0.76mm, 0.4mm Pitch
SC728/SC729
2A Low Vin, Very Low Ron
Load Switch
Description
The SC728/SC729 is a low input voltage, very low Ron
load switch designed for use in battery powered applica-
tions. Very low quiescent current of less than 2µA, and a
low shutdown current of less than 1µA (SC728) reduces
power loss during Standby and Off states. A logic level
Enable allows low voltage on/off control down to 1.1V.
The SC728 provides a quick turn on time, while the SC729
provides a longer soft start to limit inrush current. The
SC729 also features an automatic discharge circuit which
discharges the output when the part is disabled.
The SC728/SC729 is offered in an ultra-small 4-bump
0.76mm × 0.76mm Chip Scale Package (CSP) which
enables very small board area implementations. The
SC728/SC729 has an operating ambient temperature
range of -40°C to +85°C.
Applications
 Smart Phones
 Tablet PCs
 GPS Devices
 Battery Powered Equipment
 Other Portable Device
SC724/SC725 offers an alternative bump connection
pattern to SC728/SC729. Please go to Semtech.com
website for details.
Device
SC728
Package
Automatic
Discharge
Rising Time
CSP
No
3µs(Typ.)
SC729
CSP
Yes
140µs(Typ.)
Typical Application Circuit
SUPPLY
1µF
ENABLE
VIN
VOUT
SC728 / SC729
EN
GND
LOAD
1µF
Rev. 2.2
© 2015 Semtech Corporation