Semtech SC493
EcoSpeed™ Step-down Controller with I2C Interface
The SC493 is a synchronous EcoSpeed ™ buck power supply controller. It features an I2C interface and a bootstrap switch in a space-saving MLPQ 3X3-20 pin package. The SC493 uses Semtech’s advanced patented adaptive on-time control architecture to provide excellent light load efficiency and fast transient
response with small external components.
Features
- Input supply voltage range — 3.0V to 28V
- Controller supply voltage range — 3.0V to 5.5V
- All ceramic solution enabled
- I2C interface
- Output voltage fine adjust control
- Output voltage margining
- Supports dynamic voltage transitions via the I2C interface
- Programmable power-on delay time and soft-start time
- EcoSpeed™ architecture with pseudo fixed-frequency adaptive on-time control
- Switching frequency programmable up to 1MHz
- Selectable power save, including ultrasonic
- Non-synchronous start-up into pre-biased loads
- Over-voltage/under-voltage fault protection
- Smart power save
- Power good Output
- Smart drive™
- Status register monitoring device operation
- Ulrta-thin package — 3 x 3 x 0.6 (mm), 20 pin MLPQ-UT
- Lead-free and halogen-free
- WEEE and RoHS compliant
I2C — logo is a trademark of NXP B.V.
Applications
- Printers
- Computer peripherals
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