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參數(shù)資料
| 型號： | ST730AB |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | DC/DC變換器 |
| 英文描述： | 5V STEP-DOWN, CURRENT-MODE PWM DC-DC CONVERTERS |
| 中文描述： | 5V的降壓，電流模式PWM DC - DC變換器 |
| 文件頁數(shù)： | 1/9頁 |
| 文件大小： | 260K |
| 代理商： | ST730AB |
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 ST730A is a 5V output CMOS, step-down
switching regulator. The ST730A accepts inputs
between 5.2V 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
precise output regulation and excellent transient
responses.
Output
voltage
guaranteed to be ±5% over line, load, and
temperature 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
absence
of
to
work
in
most
ST730A
5V STEP-DOWN,
CURRENT-MODE PWM DC-DC CONVERTERS
SCHEMATIC DIAGRAM
DIP-8
SO-8
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ST730ABD | 5V STEP-DOWN, CURRENT-MODE PWM DC-DC CONVERTERS |
| ST730ABN | 5V STEP-DOWN, CURRENT-MODE PWM DC-DC CONVERTERS |
| ST730AC | MOSFET; Transistor Polarity:N Channel; Continuous Drain Current, Id:2.85A; On-Resistance, Rds(on):0.09ohm; Package/Case:8-SOIC; Leaded Process Compatible:No; Mounting Type:surface mount; Peak Reflow Compatible (260 C):No |
| ST730ACD | 5V STEP-DOWN, CURRENT-MODE PWM DC-DC CONVERTERS |
| ST730ACN | MOSFET, DUAL NP LOGIC SO-8MOSFET, DUAL NP LOGIC SO-8; Transistor type:MOSFET; Transistor polarity:N & P Complement; Voltage, Vds max:20V; Case style:SO-8; Current, Id cont:9.1A; Current, Idm pulse:30A; Power, Pd:1.3W; Resistance, Rds |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST730ABD | 制造商:STMicroelectronics 功能描述:CONV DC-DC SGL-OUT STEP DOWN 8PIN SO - Bulk |
| ST730ABD-TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5V STEP-DOWN, CURRENT-MODE PWM DC-DC CONVERTERS |
| ST730ABN | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5V STEP-DOWN, CURRENT-MODE PWM DC-DC CONVERTERS |
| ST730AC | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5V STEP-DOWN, CURRENT-MODE PWM DC-DC CONVERTERS |
| ST730ACD | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Stepdown 5V 450mA 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(fēng)格:SMD/SMT |
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