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LM2704

Features: ·550mA, 0.7Ω, internal switch·Uses small surface mount components·Adjustable output voltage up to 20V·2.2V to 7V input range·Input undervoltage lockout·0.01µA shutdown current·Small 5-Lead SOT-23 packageApplication·LCD Bias Supplies·White LED Back-Lighting·Handheld Devices·Di...

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SeekIC No. : 004395010 Detail

LM2704: Features: ·550mA, 0.7Ω, internal switch·Uses small surface mount components·Adjustable output voltage up to 20V·2.2V to 7V input range·Input undervoltage lockout·0.01µA shutdown current·...

LM2704 Data Sheet

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Part Number:
LM2704
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

·550mA, 0.7Ω, internal switch
·Uses small surface mount components
·Adjustable output voltage up to 20V
·2.2V to 7V input range
·Input undervoltage lockout
·0.01µA shutdown current
·Small 5-Lead SOT-23 package




Application

·LCD Bias Supplies
·White LED Back-Lighting
·Handheld Devices
·Digital Cameras
·Portable Applications




Specifications

Regulated LEDs 4
Total LED Current 120 mA
Boost Type Inductive
Efficiency (peak) 80 %
Input Min Voltage 2.2 Volt
Input Max Voltage 7 Volt
OutputMax Voltage 20 Volt
Boost Voltage Unregulated
LED Configuration Series
Supply Current 0.235 mA
Switching Type PFM
PWM BrightCtrl Yes
Analog-V BrightCtrl No
Ambient Light Compensation No
RGB-LED No
Temperature Min -40 deg C
Temperature Max 85 deg C
RegType Switching Regulator
PowerWise No
View Using Catalog


VIN 7.5V
SW Voltage 21V
FB Voltage2V
SHDN Voltage7.5V
Maximum Junction Temp. TJ 150
(Note 2)
Lead Temperature
(Soldering 10 sec.) 300
Vapor Phase
(60 sec.) 215
Infrared
(15 sec.) 220
ESD Ratings (Note 3)
Human Body Model 2kV
Machine Model (Note 4) 200V






Description

The LM2704 is a micropower step-up DC/DC in a small 5-lead SOT-23 package. A current limited, fixed off-time control scheme conserves operating current resulting in high efficiency over a wide range of load conditions. The 21V switch allows for output voltages as high as 20V. The low 400ns off-time permits the use of tiny, low profile inductors and capacitors to minimize footprint and cost in space-conscious portable applications. The LM2704 is ideal for LCD panels requiring low current and high efficiency as well as white LED applications for cellular phone back-lighting. The LM2704 can drive up to 8 white LEDs from a single Li-Ion battery.

Reliability Metrics

Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM2704-ADJ MDC ABCD150 0 31520 0 0 3739000 1 1060951459
LM2704-ADJ MWC ABCD150 0 31520 0 0 3739000 1 1060951459
LM2704MF-ADJ ABCD150 0 31520 0 0 3739000 1 1060951459
LM2704MFX-ADJ ABCD150 0 31520 0 0 3739000 1 1060951459

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

Title Size in Kbytes Date
AN-1250: Application Note 1250 Inductive Based Switching Regulator Circuits Provide High Efficiency White LED Drives 81 Kbytes 26-Sep-02 Download
AN-1277: Application Note 1277 LM2703/LM2704 Evaluation Board 26 Kbytes 6-Mar-03 Download

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

More Application Notes

Title Size in Kbytes Date
AN-1308: Application Note 1308 LM2700 Evaluation Board 32 Kbytes 5-Jan-04 Download
AN-1237: Application Note 1237 RSDS™ Flat Panel Display Design Guidelines Part 2 141 Kbytes 14-May-03 Download

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






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