LM2833 - 1.5MHz/3MHz 3.0A Step-Down DC-DC Switching Regulator
Datasheet Packaging Samples & Pricing Eval. Boards Reliability Application Notes Knowledge Base

Features


Input voltage range of 3.0V to 5.5V
Output voltage range of 0.6V to 4.5V
Tiny eMSOP-10 or LLP-10 package
3.0A steady-state output current
High switching frequencies
 1.5MHz (LM2833X)
 3.0MHz (LM2833Z)
Enable pin
56mΩ PMOS switch
0.6V, 2% internal voltage reference over line and temperature
Internal soft-start
Internally compensated peak current-mode control
Cycle-by-cycle current limit and thermal shutdown
Frequency foldback protection
Input voltage UVLO (Under-voltage lockout)
Output over-voltage protection

General Description


The LM2833 regulator is a monolithic, high frequency, PWM step-down DC/DC converter available in a 10-pin LLP or eMSOP package. It contains all the active functions to provide local DC/DC conversion with fast transient response and accurate regulation in the smallest possible PCB area. More...


Applications


Multimedia Set Top Box
Broadband Communications
Core Power in HDDs
Data Acquisition/Telemetry
USB Powered Devices
DSL Modems
  Typical Application
click for larger image

typical application circuit

ParametersValues
Output Current 3000 mA
Input Min Voltage 3.0 Volt
Input Max Voltage 5.5 Volt
Output Min 0.6 Volt
Output Max 4.5 Volt
Frequency Min 2250, 1100 kHz
Frequency Max 1950, 3750 kHz
Efficiency (peak) 91, 93 %
On/Off Pin Yes
Error Flag No
SoftStart Yes
Sync Pin No
Inverting No
Flyback No
RegType Switching Regulator
Temperature Min -40 deg C
Temperature Max 125 deg C
Adjustable Output Yes
Adj Switch Frequency No
PWM Mode Peak Current Mode
Topology Buck
Special Features Internal Compensation
Step-Down Yes
Multiple Output Capability No
Switching Frequency 3000, 1500 kHz
Feedback Voltage 0.6 Volt
Regulator Family SIMPLE SWITCHER
Synchronous Rectification No
Quiescent Current 4.3, 3.2 mA


Typical Performance


click for larger image

efficiency vs load
  Additional Resources
Application Notes


Block Diagram


click for larger image

new block diagram

Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM2833 1.5MHz/3MHz 3.0A Step-Down DC-DC Switching Regulator 659
Kbytes
13-Jan-09 Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.


Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders
Budgetary PricingStd
Pack
Size
Package
Marking
Format
TypePinsSpec.MSL
Rating
Peak
Reflow
RoHS
Report
CAD
Symbols
WeeksQtyQty$US each
LM2833XMYMINI SOIC EXP PAD10NOPB3260RoHS N/A Full productionN/A
Samples
Buy Now
1K+$1.85reel
of
1000
ZXTT
SPYB
6 weeksN/A
LM2833ZMYMINI SOIC EXP PAD10NOPB3260RoHS N/A Full productionN/A
Samples
Buy Now
1K+$1.97reel
of
1000
ZXTT
SPZB
6 weeksN/A
LM2833XMYXMINI SOIC EXP PAD10NOPB3260RoHS N/A Full productionN/A
 
Buy Now
1K+$1.85reel
of
3500
ZXTT
SPYB
6 weeksN/A
LM2833ZMYXMINI SOIC EXP PAD10NOPB3260RoHS N/A Full productionN/A
 
Buy Now
1K+$1.97reel
of
3500
ZXTT
SPZB
6 weeksN/A
LM2833XMYEVALLM2833X eMSOP - 1.5MHz 3.0A Step-Down DC-DC Switching RegulatorFull productionN/A
 
Buy Now
1+$37.501-
8 weeksN/A
LM2833XSDEVALLM2833X LLP - 1.5MHz 3.0A Step-Down DC-DC Switching RegulatorFull productionN/A
 
Buy Now
1+$37.501-
8 weeksN/A
LM2833ZMYEVALLM2833Z eMSOP - 3MHz 3.0A Step-Down DC-DC Switching RegulatorFull productionN/A
 
Buy Now
1+$37.501-
8 weeksN/A
LM2833ZSDEVALLM2833Z LLP - 3MHz 3.0A Step-Down DC-DC Switching RegulatorFull productionN/A
 
Buy Now
1+$37.501-
8 weeksN/A
LM2833XSDLLP10NOPB1260RoHS N/A Full productionN/A
Samples
Buy Now
1K+$1.85reel
of
1000
ZXYTT
2833X
6 weeksN/A
LM2833ZSDLLP10NOPB1260RoHS N/A Full productionN/A
Samples
Buy Now
1K+$1.97reel
of
1000
ZXYTT
2833Z
6 weeksN/A
LM2833XSDXLLP10NOPB1260RoHS N/A Full productionN/A
 
Buy Now
1K+$1.85reel
of
4500
ZXYTT
2833X
6 weeksN/A
LM2833ZSDXLLP10NOPB1260RoHS N/A Full productionN/A
 
Buy Now
1K+$1.97reel
of
4500
ZXYTT
2833Z
6 weeksN/A

General Description


The LM2833 regulator is a monolithic, high frequency, PWM step-down DC/DC converter available in a 10-pin LLP or eMSOP package. It contains all the active functions to provide local DC/DC conversion with fast transient response and accurate regulation in the smallest possible PCB area. With a minimum of external components, the LM2833 is easy to use. The ability to drive 3.0A loads with an internal 56 mΩ PMOS switch using state-of-the-art 0.5µm 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 1.5MHz or 3.0MHz, allowing the use of extremely small surface mount inductors and capacitors. Even though the operating frequency is high, efficiencies up to 93% are easy to achieve. External shutdown is included, featuring an ultra-low stand-by current of 300nA. The LM2833 utilizes peak current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, cycle-by-cycle current limit, frequency foldback, thermal shutdown, and output over-voltage protection.

Reliability Metrics


Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM2833XMYPVIP05009960008550005242608584
LM2833XMYXPVIP05009960008550005242608584
LM2833XSDPVIP05009960008550005242608584
LM2833XSDXPVIP05009960008550005242608584
LM2833ZMYPVIP05009960008550005242608584
LM2833ZMYXPVIP05009960008550005242608584
LM2833ZSDPVIP05009960008550005242608584
LM2833ZSDXPVIP05009960008550005242608584

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


Application Notes


TitleSize in Kbytes Date Click link below to Download
AN-1973: Application Note 1973 Benefits and Challenges of High-Frequency Regulators 348
Kbytes
25-Jun-09 Download

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More Application Notes


TitleSize in Kbytes Date Click link below to Download
AN-1556: Application Note 1556 LM2832Z 8-Pin eMSOP Demo Board 1199
Kbytes
8-Jan-09 Download
AN-1550: Application Note 1550 LM2831X 6-Pin LLP Demo Board 1727
Kbytes
8-Jan-09 Download
AN-1553: Application Note 1553 LM2832Z 6-Pin LLP Demo Board 1726
Kbytes
8-Jan-09 Download
AN-1552: Application Note 1552 LM2832X 6-Pin LLP Demo Board 1727
Kbytes
8-Jan-09 Download
AN-1554: Application Note 1554 LM2832X 8-Pin eMSOP Demo Board 1240
Kbytes
8-Jan-09 Download
AN-1555: Application Note 1555 LM2832Y 8-Pin eMSOP Demo Board 1144
Kbytes
8-Jan-09 Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 8-Nov-2009]