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SCT2322 3.8V-32V Vin, 2A Synchronous Step-down DCDC Converter with EMI Reduction
DESCRIPTION
The SCT2322 is 2A synchronous buck converters
with up to 32V wide input voltage range, which fully
integrates a 130mΩ high-side MOSFET and a 70mΩ
low-side MOSFET to provide high efficiency stepdown DCDC conversion. The SCT2322 adopts peak
current mode control with the integrated
compensation network, which makes SCT2322 easily
to be used by minimizing the off-chip component
count. The SCT2322 supports the Pulse Skipping
Modulation (PSM).
The SCT2322 is an Electromagnetic Interference
(EMI) friendly buck converter with implementing
optimized design for EMI reduction. The converter
has proprietary designed gate driver scheme to resist
switching node ringing without sacrificing MOSFET
turn-on and turn-off time, which erases high
frequency radiation EMI noise caused by the
MOSFETs hard switching.
The SCT2322 offers output over-voltage protection,
cycle-by-cycle peak current limit, and thermal
shutdown protection. The device is available in a low
FEATURES
Switching Node Ringing-free
500kHz Switching Frequency
Pulse Skipping Mode in Light Load Condition
3.8V-32V Wide Input Voltage Range
Up to 2A Continuous Output Load Current
0.8V ±1% Feedback Reference Voltage
Fully Integrated 130mΩ R
dson
High Side MOSFET
and 70mΩ R
dson
Low Side MOSFET
1uA Shut-down Current
80ns Minimum On-time
Precision Enable Threshold for Programmable
UVLO Threshold and Hysteresis
Low Dropout Mode Operation
4ms Built-in Soft Start Time
Output Over Voltage Protection
Thermal Shutdown Protection at 160°C
Available in TSOT23-6L Package
APPLICATIONS
White Goods, Home Appliance
Surveillance
Audio, WiFi Speaker
Printer, Charging Station
DTV, STB, Monitor/LCD Display
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