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TD1509 View Datasheet(PDF) - Unspecified

Part NameDescriptionManufacturer
TD1509 2A 150KHz PWM Buck DC/DC Converter Unspecified1
TD1509 Datasheet PDF : 17 Pages
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2A 150KHz PWM Buck DC/DC Converter
General Description
The TD1509 is a series of easy to use fixed and
adjustable step-down (buck) switch-mode voltage
regulators. These devices are available in fixed output
voltage of 5V,3.3V an adjustable output version. Both
versions are capable of driving a 2A load with excellent
line and load regulation.
Requiring a minimum number of external components,
these regulators are simple to use and include internal
frequency compensation, and a fixed-frequency
The output voltage is guaranteed to ±3% tolerance under
specified input voltage and output load conditions. The
oscillator frequency is guaranteed to ±15%. External
shutdown is included, featuring typically 80 µA standby
current. Self protection features include a two stage
frequency reducing current limit for the output switch and
an over temperature shutdown for complete protection
under fault conditions.
The TD1509 is available in SOP8 and DIP8 packages.
z 5V,3.3V and adjustable output versions
z Output adjustable from 1.23v to 43V
z Fixed 150KHz frequency internal oscillator
z Guaranteed 3A output load current
z Input voltage range up to 45V
z Low power standby mode, IQ typically 80 µA
z TTL shutdown capability
z Excellent line and load regulation
z Requires only 4 external components
z High efficiency
z Thermal shutdown and current limit protection
z Available in SOP8 and DIP8 packages
z Simple High-efficiency step-down regulator
z On-card switching regulators
z Positive to negative converter
z LCD monitor and LCD TV
z DVD recorder and PDP TV
z Battery charger
z Step-down to 3.3V for microprocessors
Package Types
December, 20, 2005.
Figure 1. Package Types of TD1509
Techcode Semiconductor Limited
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