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GM7109-5.0S8T 参数 Datasheet PDF下载

GM7109-5.0S8T图片预览
型号: GM7109-5.0S8T
PDF下载: 下载PDF文件 查看货源
内容描述: 为150KHz , 2A降压电压开关调节器 [150KHz, 2A STEP DOWN VOLTAGE SWITCHING REGULATORS]
分类和应用: 调节器开关
文件页数/大小: 9 页 / 150 K
品牌: GAMMA [ GAMMA MICROELECTRONICS INC. ]
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GM7109
150KHz, 2A STEP DOWN VOLTAGE
SWITCHING REGULATORS
Description
GM7109 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. GM7109 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 GM7109 is high-efficiency replacements for
popular
three-terminal linear regulators, and is
requiring a smaller heat sink or even no need
heat sink.
GM7109 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.
GM7109 operates at a switching frequency of
150 kHz which
allowing smaller size filter
components than what would be needed with
lower frequency switching regulators.
GM7109 series are available in a standard 8-lead
SO package or 8 lead SO package with heat
sink.
Features
Standard SOP8 & PSOP8 package
3.3V, 5V, and Adjustable output versions
Adjustable version output voltage range
1.23V to 37V
V
OUT
accuracy is to
±
2% under specified
input voltage the 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
150 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)
LCD Monitors
Typical Application Circuits
GM7109-5.0
1
Unregulated
DC Input
FB
3
1
V
IN
Output
2
C
IN
680µF
SD
4
GND
5, 6, 7, 8
D1
1N5824
L1
68µH
5V
regulated
outpu
t,
C
OUT
220µF
www.gammamicro.com.tw
GM7109
V1.00
1