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GM2576-APS8R 参数 Datasheet PDF下载

GM2576-APS8R图片预览
型号: GM2576-APS8R
PDF下载: 下载PDF文件 查看货源
内容描述: 2A降压电压开关调节器 [2A STEP DOWN VOLTAGE SWITCHING REGULATORS]
分类和应用: 调节器开关
文件页数/大小: 9 页 / 151 K
品牌: GAMMA [ GAMMA MICROELECTRONICS INC. ]
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GM2576
2A STEP DOWN VOLTAGE SWITCHING
REGULATORS
Description
GM2576 series is designed to provide all the
active function for a
step-down (buck) switching
regulator, and drives a maximum load current as
high as 2A
line and load regulations. GM2576 is
available
in fixed output voltages of 3.3V, 5V,
and a versatile Adjustable output version.
These regulators are simple to use and require
minimum number of external components. The
features include internal frequency compensation
and a fixed-frequency oscillator.
The GM2576 is high-efficiency replacements for
popular
three-terminal linear regulators, and is
requiring a smaller heat sink or even no need
heat sink.
GM2576 performs well with standard inductors
from most
of manufacturers, and simplifying the
design of switch-mode
power supplies.
External
shutdown is included with 80 µA (typical) standby
current. The output switch has cycle-by-cycle
current limiting as well as thermal shutdown for
full protection under fault conditions.
GM2576 operates at a switching frequency of
52 kHz which
allowing smaller size filter
components than what would be needed with
lower frequency switching regulators.
GM2576 series are available in a standard 8-lead
SO package, 8 lead SO package with heat sink
or 5L TO252 package.
Features
Standard SOP8 & PSOP8 and 5L TO252
packages are available
3.3V, 5V, and Adjustable output versions
Adjustable version output voltage range
1.23V to 37V
V
OUT
accuracy is to
±1.8%
under specified
input voltage and output load conditions
Input voltage range up to 40V
Requires only 4 external components with
High efficiency
TTL shutdown capability, low power
standby mode
Built-in thermal shutdown, current limit
protection
Uses standard inductors
52 kHz fixed frequency internal oscillator
Application
Pre-regulator for linear regulators
High-efficiency step-down buck regulator
On-card/board switching regulators
Positive to negative converter (buck-boost)
Typical Application Circuits
GM2576-5.0
7V – 40V
Unregulated
DC Input
FB
V
IN
Output
L1
100µH
5V
regulated
outpu
t,
C
IN
100µF
SD
GND
D1
1N5822
C
OUT
680µF
www.gammamicro.com.tw
GM2576
V1.30
1