Diodes AP3503F Manuel d'utilisateur

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Data Sheet
340kHz, 3A Synchronous DC-DC Buck Converter AP3503F
Oct. 2012 Rev. 1. 3 BCD Semiconductor Manufacturing Limited
1
General Description
The AP3503F is a 340kHz fixed frequency, current
mode, PWM synchronous buck (step-down) DC-DC
converter, capable of driving a 3A load with high
efficiency, excellent line and load regulation. The
device integrates N-channel power MOSFET
switches with low on-resistance. Current mode
control provides fast transient response and
cycle-by-cycle current limit.
The AP3503F employs complete protection to ensure
system security. Including output Over Voltage
Protection, input Under Voltage LockOut,
programmable soft-start, Over Temperature
Protection to safeguard the circuit.
This IC is available in PSOP-8 package.
Features
• Input Voltage Range: 4.5V to 18V
• Fixed 340kHz Frequency
• High Efficiency: up to 95%
• Output Current: 3A
• Current Mode Control
• Built-in Over Current Protection
• Built-in Thermal Shutdown Function
• Built-in UVLO Function
• Built-in Over Voltage Protection
• Programmable Soft-start
Applications
• LCD TV
• Set Top Box
• Portable DVD
• Digital Photo Frame
Figure 1. Package Type of AP3503F
PSOP-8
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Résumé du contenu

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Data Sheet 340kHz, 3A Synchronous DC-DC Buck Converter AP3503F Oct. 2012 R

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Data Sheet 340kHz, 3A Synchronous DC-DC Buck Converter AP3503F Oct. 2012 R

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IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the

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Data Sheet 340kHz, 3A Synchronous DC-DC Buck Converter AP3503F Oct. 2012 R

Page 5 - Electrical Characteristics

Data Sheet 340kHz, 3A Synchronous DC-DC Buck Converter AP3503F Oct. 2012 R

Page 6 - =25ºC, V

Data Sheet 340kHz, 3A Synchronous DC-DC Buck Converter AP3503F Oct. 2012 R

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Data Sheet 340kHz, 3A Synchronous DC-DC Buck Converter AP3503F Oct. 2012 R

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Data Sheet 340kHz, 3A Synchronous DC-DC Buck Converter AP3503F Oct. 2012 R

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Data Sheet 340kHz, 3A Synchronous DC-DC Buck Converter AP3503F Oct. 2012 R

Page 10 - 3.402(0.134)

Data Sheet 340kHz, 3A Synchronous DC-DC Buck Converter AP3503F Oct. 2012 R

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Data Sheet 340kHz, 3A Synchronous DC-DC Buck Converter AP3503F Oct. 2012 R

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