500KHz COT Synchronous Step-Down DC/DC Converter BLL2452S, Provides 4.2V to 16V Wide Input Voltage Range and 2.5A Continuous Load Current Capability
The BLL2452S is a fully integrated synchronous rectified step-down converter that provides a wide 4.2V to 16V input voltage range and 2.5A continuous load current capability. The BLL2452S can achieve high efficiency and reduce power loss at light load. In shutdown mode, the maximum supply current is about 3μA.
The BLL2452S protection function includes cycle-by-cycle current limit, UVLO, and thermal shutdown. Besides, internal soft-start prevents inrush current at fast power-on. This device uses Constant On-Time (COT) control mode which provides a fast load transient response. Internal loop compensation function reduces the external compensator components and simplifies the design process.
The BLL2452S COT Synchronous Step-Down DC/DC Converter requires a minimum number of readily available standard external components and is available in a SOT23-6 tiny package.
FEATURES
Wide input voltage range: 4.2V to 16V
2.5A output current
0.8V reference voltage
Low RDS(ON) integrated power MOSFET (120/80mΩ)
3μA(Max) shutdown current
Integrated internal compensation
High efficiency at light load
Internal 1ms soft-start
Cycle-by-cycle current limit
Over-temperature protection with auto recovery
Under voltage lockout (UVLO)
Hiccup short circuit protection
Available in a SOT23-6 tiny package
RoHS compliant
APPLICATIONS
Distributed power system
Flat Panel television and monitors
STB (Set-top-box)
Networking, XDSL modem
ABSOLUTE MAXIMUM RATING
ELECTRICAL CHARACTERISTICS (VIN=12V, TA=25℃, unless otherwise stated.)
ORDERING INFORMATION
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