YB1696 Datasheet, PDF (1/11 Pages) YOBON TECHNOLOGIES,INC. – 150KHz, 3A PWM Buck Switching Regulator

YB1696
150KHz, 3A PWM Buck Switching Regulator
Description
The YB1696 series are monolithic
integrated circuits that provide all the active
functions for a step-down DC/DC converter,
capable of driving a 3A load without
additional transistor component. Requiring
a minimum number of external component,
the board space can be saved easily. The
external shutdown function can be
controlled by TTL 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. The YB1696
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 5V and an
adjustable type. The package is available in
a standard 5-lead TO-263(S).
Features
„ 5V and adjustable output versions
„ Adjustable version output voltage
range, 1.23V to 28V +4% max over
line and load condition
„ Available in TO263-5L packages
„ Voltage mode non-synchronous PWM
control
„ Thermal-shutdown and current-limit
protection
„ ON/OFF shutdown control input
„ Input voltage range up to 32V
„ Output load current: 3A
„ 150 KHz fixed frequency internal
oscillator
„ Low power standby mode
„ Built-in switching transistor on chip
Applications
„ Simple High-efficiency step-down
regulator
„ Efficient preregulator for linear
regulators
„ On-card switching regulators
„ Positive to negative converter
„ Battery charger
Typical Application Circuit
YB1696 MRev.1.1
www.yobon.com.tw
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