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LM2832XMY Datasheet

  • LM2832XMY

  • National Semiconductor [High Frequency 2.0A Load - Step-Dow...

  • NSC

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LM2832 High Frequency 2.0A Load - Step-Down DC-DC Regulator
August 2006
LM2832
High Frequency 2.0A Load - Step-Down DC-DC
Regulator
General Description
The LM2832 regulator is a monolithic, high frequency, PWM
step-down DC/DC converter in a 6 Pin LLP and a 8 Pin
eMSOP package. It provides all the active functions to pro-
vide local DC/DC conversion with fast transient response
and accurate regulation in the smallest possible PCB area.
With a minimum of external components, the LM2832 is
easy to use. The ability to drive 2.0A loads with an internal
150 m鈩?PMOS switch using state-of-the-art 0.5 碌m BiCMOS
technology results in the best power density available. The
world-class control circuitry allows on-times as low as 30ns,
thus supporting exceptionally high frequency conversion
over the entire 3V to 5.5V input operating range down to the
minimum output voltage of 0.6V. Switching frequency is
internally set to 550 kHz, 1.6 MHz, or 3.0 MHz, allowing the
use of extremely small surface mount inductors and chip
capacitors. Even though the operating frequency is high,
efficiencies up to 93% are easy to achieve. External shut-
down is included, featuring an ultra-low stand-by current of
30 nA. The LM2832 utilizes current-mode control and inter-
nal compensation to provide high-performance regulation
over a wide range of operating conditions. Additional fea-
tures include internal soft-start circuitry to reduce inrush
current, pulse-by-pulse current limit, thermal shutdown, and
output over-voltage protection.
Features
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Input voltage range of 3.0V to 5.5V
Output voltage range of 0.6V to 4.5V
2.0A output current
High Switching Frequencies
1.6MHz (LM2832X)
0.55MHz (LM2832Y)
3.0MHz (LM2832Z)
150m鈩?PMOS switch
0.6V, 2% Internal Voltage Reference
Internal soft-start
Current mode, PWM operation
Thermal Shutdown
Over voltage protection
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Applications
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Local 5V to Vcore Step-Down Converters
Core Power in HDDs
Set-Top Boxes
USB Powered Devices
DSL Modems
Typical Application Circuit
20197564
20197581
漏 2006 National Semiconductor Corporation
DS201975
www.national.com

LM2832XMY PDF文件相關(guān)型號(hào)

LM2832XMYX,LM2832XSD,LM2832XSDX,LM2832YSD

LM2832XMY 產(chǎn)品屬性

  • National Semiconductor (TI)

  • 5.5 V

  • 1600 KHz

  • 0.6 V to 4.5 V

  • 2 A

  • 1

  • + 125 C

  • SMD/SMT

  • MSOP

  • 3 V

  • - 40 C

  • Reel

  • 1000

  • Step Down

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