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參數(shù)資料
| 型號： | ST750ACD |
| 廠商： | 意法半導體 |
| 元件分類： | DC/DC變換器 |
| 英文描述： | ADJUSTABLE STEP-DOWN, CURRENT-MODE PWM DC-DC CONVERTERS |
| 中文描述： | 可調(diào)降壓，電流模式PWM DC - DC變換器 |
| 文件頁數(shù)： | 1/9頁 |
| 文件大小： | 240K |
| 代理商： | ST750ACD |
1/9
January 2003
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UP TO 450mA LOAD CURRENTS
200kHz HIGH-FREQUENCY
CURRENT-MODE PWM
85% TO 96% EFFICIENCIES
33
μ
H OR 100
μ
H PRE-SELECTED
INDUCTOR VALUE, NO COMPONENT
DESIGN REQUIRED
0.8mA QUIESCENT CURRENT
0.3μA SHUTDOWN SUPPLY CURRENT
ADJUSTABLE OUTPUT VOLTAGE
OVERCURRENT, SOFT-START AND
UNDERVOLTAGE LOCKOUT PROTECTION
CYCLE-BY-CYCLE CURRENT LIMITING
PACKAGE AVAILABLE : DIP- 8 AND SO - 8
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DESCRIPTION
The ST750A is an adjustable output CMOS,
step-down
switching
regulator.
accepts inputs between 4V and 11V and delivers
450mA. Typical efficiencies are 85% to 96%.
Quiescent supply current is 0.8mA and only 0.3
μ
A
in shutdown mode. The output does not exhibit
frequency over this specified range. Pulse-width
modulation (PWM) current-mode control provides
The
ST750A
precise output regulation and excellent transient
responses.
Output
voltage
guaranteed to be ±4.5% plus feedback resistor
tolerance
over
line,
load,
varations.
Fixed-frequency
switching
subharmonic ruipple allows easy filtering of output
ripple and noise, as well as the use of small
external components. This regulators require only
a
single
inductor
value
applications, so no inductor design is necessary.
Typical applications are: Cellular phones & radios,
portable Instruments, Portable Communications
Equipments and Computer Peripherals.
accuracy
is
and
temperature
and
absence
of
to
work
in
most
ST750A
ADJUSTABLE STEP-DOWN,
CURRENT-MODE PWM DC-DC CONVERTERS
SCHEMATIC DIAGRAM
DIP-8
SO-8
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST750ACDTR | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Adjustable Step-Down RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| ST750ACD-TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:ADJUSTABLE STEP-DOWN, CURRENT-MODE PWM DC-DC CONVERTERS |
| ST750ACN | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:ADJUSTABLE STEP-DOWN, CURRENT-MODE PWM DC-DC CONVERTERS |
| ST750LM022 | 制造商:Seagate Technology 功能描述:HN-M750MBB M8 750GB 2.5IN 5400RPM - Trays |
| ST750M12 | 制造商:Marathon Special Products 功能描述: |
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