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參數(shù)資料
| 型號(hào)： | ST763ACN |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | DC/DC變換器 |
| 英文描述： | 3.3V STEP DOWN CURRENT MODE PWM DC-DC CONVERTERS |
| 中文描述： | 3.3V的降壓電流模式PWM DC - DC變換器 |
| 文件頁(yè)數(shù)： | 1/10頁(yè) |
| 文件大?。?/td> | 248K |
| 代理商： | ST763ACN |
1/10
November 2000
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OUTPUT VOLTAGE 3.3V
SUPPLY VOLTAGE RANGE FROM 3.3V TO
11V
GUARANTEED OUTPUT CURRENT: 500mA
TYPICAL OPERATION FREQUENCY:
200KHz
VERY LOW QUIESCENT CURRENT: 0.6mA
ON MODE 0.2
μ
A OFF MODE
SWITCH ON/OFF CONTROL
TYPICAL EFFICENCY: 90%
OPERATING TEMPERATURE RANGE:
-40°C TO 85°C
AVAILABLE IN SO-8 AND DIP-8 PACKAGES
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DESCRIPTION
The ST763A is a step-down switching regulator . It
operates from 3.3V to 11V giving a fixed 3.3V
output voltage, delivering up to 500mA. The
mainly features are typical efficiency of 90%,
quiescent current of 0.6mA, and only 0.2
μ
A in
shut-down.
The PWM current mode control provides precise
output regulation and very good transient
response. Output voltage accuracy is guaranteed
to be
±
5% over line, load and temperature
variations. A minimum number of external
components is used and the fixed frequency
switching allows easy filtering of output ripple and
noise.
Other features of this ddevice are cycle-by-clicle
current limiting, overcurrent limiting, under voltage
lockout and programmable soft-start protection.
A 22
μ
H inductor works in most applications, so no
sophisticated design is necessary.
Package available are SO-8 and DIP-8.
Typical application are in 5V to 3.3V converters,
cellular phones, portable instruments, hand-held
computers, and peripherals.
ST763A
SERIES
3.3V STEP DOWN
CURRENT MODE PWM DC-DC CONVERTERS
SCHEMATIC DIAGRAM
DIP-8
SO-8
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