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3A 150KHz PWM Buck DC/DC Converter
TD1501H
汪工 TEL:13828719410 QQ:1929794238
General Description
Features
The TD1501H 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 3.3V, 5V, and an adjustable output version.
Both versions are capable of driving a 3A load with
excellent line and load regulation.
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3.3V, 5V and adjustable output versions
Output adjustable from 1.23v to 54V
Fixed 150KHz frequency internal oscillator
Guaranteed 3A output load current
Input voltage range up to 60V
Low power standby mode, IQ typically 80 µA
TTL shutdown capability
Requiring a minimum number of external components,
these regulators are simple to use and include internal
Excellent line and load regulation
Requires only 4 external components
High efficiency
frequency compensation, and
oscillator.
a
fixed-frequency
Thermal shutdown and current limit protection
Available in TO-220B/TO220 and TO-263 packages
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.
Applications
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Simple High-efficiency step-down regulator
On-card switching regulators
Positive to negative converter
LCD monitor and LCD TV
DVD recorder and PDP TV
Battery charger
The TD1501H is available in TO-220B-5L TO220-5L and
TO-263-5L packages.
Step-down to 3.3V for microprocessors
Package Types
TO220B5L
TO2205L
TO2635L
Figure 1. Package Types of TD1501H
www.tongchuangwei.com
December, 20, 2005.
Techcode Semiconductor Limited
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