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AP1509 Datasheet - Tiger Electronic

AP1509 image

Part Name
AP1509

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page
6 Pages

File Size
2.1 MB

MFG CO.
TGS
Tiger Electronic 

■ General Description
The AP1509 series are monolithic IC designed for a step-down DC/DC converter, and own the ability of driving a 2A load without additional transistor component. Due to reducing the number of external component, the board space can be saved easily. The external shutdown function can be controlled by logic level and then come into standby mode. The internal compensation makes feedback control have good line and load regulation without external design. Regarding protected function, thermal shutdown is to prevent over temperature operating from damage, and current limit is against over current operating of the output switch. If current limit function occurred and VFB is down to 0.5V below, the switching frequency will be reduced. The AP1509 series operates at a switching frequency of 150KHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Other features include a guaranteed +4% tolerance on output voltage under specified input voltage and output load conditions, and +15% on the oscillator frequency. The output version included fixed 3.3V, 5V, 12V, and an adjustable type. The packages are available in a standard 8-lead SOP-8 package.


■ Features
● Output voltage: 3.3V, 5V, 12V and adjustable output version
● Adjustable version output voltage range, 1.23V to 18V+4%
● 150KHz +15% fixed switching frequency
● Voltage mode non-synchronous PWM control
● Thermal-shutdown and current-limit protection
● ON/OFF shutdown control input
● Operating voltage can be up to 22V
● Output load current: 2A
● SOP-8L packages
● Low power standby mode
● Built-in switching transistor on chip

■ Applications
● Simple High-efficiency step-down regulator
● On-card switching regulators
● Positive to negative converter

Page Link's: 1  2  3  4  5  6 

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