Texas Instruments LM2833Z LLP - 3MHz 3.0A Step-Down DC-DC Switching Regulator Evaluation Module LM2833ZSDEVAL LM2833ZSDEVAL 数据表
产品代码
LM2833ZSDEVAL
SNVS505E – MAY 2008 – REVISED APRIL 2013
LM2833 1.5MHz/3MHz 3.0A Step-Down DC-DC Switching Regulator
Check for Samples:
1
FEATURES
DESCRIPTION
The LM2833 regulator is a monolithic, high frequency,
2
•
Input Voltage Range of 3.0V to 5.5V
PWM step-down DC/DC converter available in a 10-
•
Output Voltage Range of 0.6V to 4.5V
pin WSON or MSOP-PowerPAD package. It contains
•
Tiny MSOP-PowerPAD 10 or WSON-10
all the active functions to provide local DC/DC
Package
conversion with fast transient response and accurate
regulation in the smallest possible PCB area. With a
regulation in the smallest possible PCB area. With a
•
3.0A Steady-State Output Current
minimum of external components, the LM2833 is
•
High Switching Frequencies
easy to use. The ability to drive 3.0A loads with an
–
1.5MHz (LM2833X)
internal 56 m
Ω
PMOS switch using state-of-the-art
0.5µm BiCMOS technology results in the best power
–
3.0MHz (LM2833Z)
density available. The world-class control circuitry
•
Enable Pin
allows on-times as low as 30ns, thus supporting
•
56m
Ω
PMOS Switch
exceptionally high frequency conversion over the
entire 3V to 5.5V input operating range down to the
entire 3V to 5.5V input operating range down to the
•
0.6V, 2% Internal Voltage Reference Over Line
minimum output voltage of 0.6V. Switching frequency
and Temperature
is internally set to 1.5MHz or 3.0MHz, allowing the
•
Internal Soft-Start
use of extremely small surface mount inductors and
•
Internally Compensated Peak Current-Mode
capacitors. Even though the operating frequency is
Control
high, efficiencies up to 93% are easy to achieve.
External shutdown is included, featuring an ultra-low
External shutdown is included, featuring an ultra-low
•
Cycle-by-Cycle Current Limit and Thermal
stand-by current of 300nA. The LM2833 utilizes peak
Shutdown
current-mode control and internal compensation to
•
Frequency Foldback Protection
provide high-performance regulation over a wide
•
Input Voltage UVLO (Under-Voltage Lockout)
range of operating conditions. Additional features
include internal soft-start circuitry to reduce inrush
include internal soft-start circuitry to reduce inrush
•
Output Over-Voltage Protection
current,
cycle-by-cycle
current
limit,
frequency
foldback, thermal shutdown, and output over-voltage
APPLICATIONS
protection.
•
Multimedia Set Top Box
•
Broadband Communications
•
Core Power in HDDs
•
Data Acquisition/Telemetry
•
USB Powered Devices
•
DSL Modems
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2008–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.