ETA2821 [ETA]
42V Input Standoff Voltage, 1.5A Step-Down Converter in SOT23-6;
| 型号： | ETA2821 |
| 厂家： | 
ETA Semiconductor |
| 描述： | 42V Input Standoff Voltage, 1.5A Step-Down Converter in SOT23-6 |
| 文件： | 总1页 (文件大小：199K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ETA2821
42V Input Standoff Voltage, 1.5A Step-Down Converter in SOT23-6
DESCRIPTION
FEATURES
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Wide Input Operating Range from 4V to 38V
The ETA2821 is a wide input range, high-efficiency, and high
frequency DC-to-DC step-down switching regulator,
capable of delivering up to 1.5A of output current. With a
fixed switching frequency of 650KHz, this current mode
PWM controlled converter allows the use of small external
components, such as ceramic input and output caps, as
well as small inductors.ETA2821 also employs a proprietary
control scheme that switches the device into a power save
mode during light load, thereby extending the range of high
efficiency operation. An OVP function protects the IC itself
and its downstream system against input voltage surges.
With this OVP function, the IC can stand off input voltage as
high as 42V, making it an ideal solution for industrial
applications such as smart meters as well as automotive
applications.
Standoff Input Voltage: 42V
High Efficiency at 12V In 5V Out: Up to 91%:
High Efficiency PFM mode at light load
Capable of Delivering 1.5A
No External Compensation Needed
Current Mode control
Logic Control Shutdown
Thermal shutdown and UVLO
Available in SOT23-6 Package
APPLICATIONS
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Smart Meters
Industrial Applications
Automotive Applications
In automotive systems, power comes from the battery, with
its voltage typically between 9V and 24V. Including cold
crank and double battery jump-starts, the minimum input
voltage may be as low as 4V and the maximum up to 36V,
with even higher transient voltages. With these high input
voltages, linear regulators cannot be used for high supply
currents without overheating the regulator. Instead, high
efficiency switching regulators such as ETA2821 must be
used to minimize thermal dissipation.
ORDERING INFORMATION
PART #
PACKAGE PIN TOP MARK
ETA2821S2G-T
SOT23-6
EGYW
Date Code
Product Number
ETA2821 is available SOT23-6 Packages.
Efficiency Vs IOUT
100%
TYPICAL APPLICATION
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
VIN Standoff up to 42V
5
1
10nF
IN
BST
VOUT
5.0V/1.5A
10μH
50V
10μF
6
3
VIN=6V
VIN=12V
VIN=24V
VIN=36V
SW
FB
4
EN
D1
84K
16K
6.3V
22μF
VOUT=5V
GND
2
0.01
0.1
1
IOUT (A)
www.ETAsolution.com
Outperform with Efficiency
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