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輸入2.8V-30V升壓恒流驅動芯片內置MOS大2A輸出
AP9235
General Descrtption
AP9235 is DC/DC step-up converter that deliver an
accurate constant current for driving LEDs. Operation
at a fixed switching frequency of 1MHz allows the
device to be used with small value external ceramic
capacitors and inductor. LEDs connected in series are
driven with a regulated current set by the external
resistor. The AP9235 is ideal for driving up to eight
white LEDs in series or up to 30V.
Ordering Information
Package Code
Temperature Code
Optional Spec Code
AP9235 □□□□(□□□□□□□□)□□□□
Temperature Range: -40°C to 85°C
Features
? Input voltage range: 2.8 to 30V
? Switch current limit 2A
? Drives LED strings up to 30V
? 1MHz fixed frequency minimizes the external
components
? Dimming frequency for EN/PWM pin:
20kHz~1MHz
? Internal softstart limits the inrush current
? Open LED over voltage protection
? RoHS Compliant and Halogen Free
Applications
? GPS Navigation Systems
? Handheld Devices
? Portable Media Players
Typical Applications
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