The BLL2453 is a fully integrated synchronous rectified step-down converter that provides wide 4.2V to 16V input voltage range and 3A continuous load current capability. The BLL2453 can achieve high efficiency and reduce power loss at light load. In shutdown mode, the maximum supply current is about 3μA.
The BLL2453 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 fast load transient response. Internal loop compensation function reduces the external compensator components and simplifies the design process.
The BLL2453 requires a minimum number of readily available standard external components and is available in tiny SOT563 and SOT23-6 packages.
1、Wide input voltage range: 4.2V to 16V
2、3A output current
3、0.8V reference voltage
4、Low RDS(ON) integrated power MOSFET (80/50mΩ)
5、3μA(Max) shutdown current
6、Integrated internal compensation
7、High efficiency at light load
8、Internal 1ms soft-start
9、Cycle-by-cycle current limit
10、Over-temperature protection with auto recovery
11、Under voltage lockout (UVLO)
12、Hiccup short circuit protection
13、Available in tiny SOT563 and SOT23-6 packages
14、RoHS compliant
1、Distributed power system
2、Flat Panel television and monitors
3、STB (Set-top-box)
4、Networking, XDSL modem
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