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AP3408 Datasheet, PDF (1/12 Pages) BCD Semiconductor Manufacturing Limited – 2A, 4MHz High Efficiency Synchronous Buck Converter | |||
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Preliminary Datasheet
2A, 4MHz High Efficiency Synchronous Buck Converter
AP3408
General Description
The AP3408 is a current mode, PWM synchronous
buck DC/DC converter, capable of driving a 2A load
with high efficiency, excellent line and load
regulation. It operates in continuous PWM mode.
The AP3408 integrates synchronous P-channel and
N-channel power MOSFET switches with low
on-resistance. It is ideal for portable applications
powered from a single Li-ion battery. 100% duty
cycle and low on-resistance P-channel internal power
MOSFET can maximize the battery life.
The switching frequency of AP3408 can be
programmable from 300kHz to 4MHz, which allows
small-sized components, such as capacitors and
inductors. A standard series of inductors from several
different manufacturers are available. This feature
greatly simplifies the design of switch-mode power
supplies.
The AP3408 is available in DFN-3Ã3-10 and PSOP-8
packages.
Features
⢠Input Voltage Range: 2.6 to 5.5V
⢠Adjustable Output from 0.8 to 5V
⢠0.8V Reference Voltage with ± 2% Precision
⢠Output Current: 2A
⢠High Efficiency up to 95%
⢠Low RDSON Internal Switches
⢠Programmable Frequency: 300kHz to 4MHz
⢠Current Mode Control
⢠Forced Continuous-mode Operation
⢠100% Duty Cycle
⢠Synchronizable Switching Frequency
⢠Power Good Output Voltage Monitoring
⢠Built-in Soft-start
⢠Built-in Short Circuit Protection
⢠Built-in Thermal Shutdown Protection
⢠Built-in Current Limit Function
Applications
⢠Portable Media Player
⢠Digital Still and Video Cameras
⢠Notebook
DFN-3Ã3-10
PSOP-8
Jul. 2011 Rev. 1. 0
Figure 1. Package Types of AP3408
BCD Semiconductor Manufacturing Limited
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