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參數(shù)資料
| 型號(hào)： | ST750ACN |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | TRANSISTOR,MOSFET,N-CHANNEL,30V V(BR)DSS,6.9A I(D),SO |
| 中文描述： | 可調(diào)降壓，電流模式PWM DC - DC變換器 |
| 文件頁(yè)數(shù)： | 1/9頁(yè) |
| 文件大小： | 240K |
| 代理商： | ST750ACN |
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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