參數(shù)資料
型號(hào): MSP1250
廠(chǎng)商: Electronic Theatre Controls, Inc.
英文描述: Power Converter 150kHz 3A Step-down Voltage Regulator
中文描述: 150kHz的第3A電源轉(zhuǎn)換器降壓穩(wěn)壓器
文件頁(yè)數(shù): 2/9頁(yè)
文件大?。?/td> 213K
代理商: MSP1250
MSP1250
Power Converter 150kHz 3A
Step-down Voltage Regulator
Connection Diagrams and Ordering Information
Bent and Staggered Leads, Through Hole
Package Surface Mount Package
5-Lead TO-220 (T)
5-Lead TO-263 (S)
PIN FUNCTIONS
+VIN
—This is the positive input supply for the IC switching regulator. A suitable input
bypass capacitor must be present at this pin to minimize voltage transients and to supply
the switching currents needed by the regulator
.
Ground
—Circuit ground
.
Output
—Internal switch. The voltage at this pin switches between (+VIN - VSAT) and
approximately -0.5V, with a duty cycle of approximately VOUT/VIN. To minimize coupling to
sensitive circuitry, the PC board copper area connected to this pin should be kept to a
minimum
.
FeedBack
—Senses the regulated output voltage to complete the feedback loop
.
—Allows the switching regulator circuit to be shut down using logic level signals
thus dropping the total input supply current to approximately 80 μA. Pulling this pin below
a threshold voltage of approximately 1.3V turns the regulator on, and pulling this pin above
1.3V (up to a maximum of 25V) shuts the regulator down. If this shutdown feature is not
needed, the
pin can be wired to the ground pin or it can be left open, in either
case the regulator will be in the
ON
condition.
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