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点击图片查看原图General Description
The TD1534 is a 380 KHz fixed frequency monolithic
step down switch mode regulator with a built in internal
Power MOSFET. It achieves 2A continuous output
current over a wide input supply range with excellent
load and line regulation.
The device includes a voltage reference, oscillation
circuit, error amplifier, internal PMOS and etc.
The PWM control circuit is able to adjust the duty ratio
linearly from 0 to 100%. An enable function, an over
current protection function and a short circuit protection
function are built inside. An internal compensation block
is built in to minimize external component count.
The TD1534 serves as ideal power supply units for
portable devices.
Features
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2A Constant Output Current
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140mΩ RDSON Internal Power PMOSFET Switch
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Up to 95% Efficiency
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Fixed 380KHz Frequency
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Wide 1.0V to 20V Input Voltage Range
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Output Adjustable from 0.8V to 18V
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Built in Frequency Compensation
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Built in Thermal Shutdown Function
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Built in Current Limit Function
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SOP-8 Package is Available
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The minimum dropout up to 0.3V
Applications
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Portable DVD
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LCD Monitor / TV
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Battery Charger
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ADSL Modem
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Telecom / Networking Equipment
