中文
EnglishThe HM1583 is a 380KHz fixed frequency PWM buck (step-down,number of external components, the reg) DC/DC converter, capable of driving a 3A load with high efficiency, low ripple and excellent line and
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Wide 3.6V to 23V Input Voltage Range
Output Adjustable from 1.222V to 21V
Maximum Duty Cycle 100%
Minimum Drop Out 0.6V
The HM1583 is a 380KHz fixed frequency
PWM buck (step-down) DC/DC converter,
capable of driving a 3A load with high
efficiency, low ripple and excellent line and
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Fixed 380KHz Switching Frequency
load
regulation. Requiring a
minimum
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3A Constant Output Current Capability
Internal Optimize Power MOSFET
number of external components, the regulator
is simple to use and include internal
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High efficiency
Excellent line and load regulation
frequency compensation
fixed-frequency oscillator.
and
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TTL shutdown capability
EN pin with hysteresis function
Built in thermal shutdown function
Built in current limit function
Built in output short protection function
Available in SOP8 package
The PWM control circuit is able to adjust the
duty ratio linearly from 0 to 100%. An enable
function, an over current protection function is
built inside. When short protection function
happens, the operation frequency will be reduced
from 380KHz to 80KHz. An internal
Applications
l LCD Monitor and LCD TV
compensation block is built in to minimize
external component count.
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Digital Photo Frame
Set-up Box
ADSL Modem
Telecom / Networking Equipment
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