Datasheet LT8330 (Analog Devices)
| Fabricante | Analog Devices |
| Descripción | Low IQ Boost/SEPIC/Inverting Converter with 1A, 60V Switch |
| Páginas / Página | 24 / 1 — FeaTures. DescripTion. 3V to 40V Input Voltage Range. Ultralow Quiescent … |
| Formato / tamaño de archivo | PDF / 1.7 Mb |
| Idioma del documento | Inglés |
FeaTures. DescripTion. 3V to 40V Input Voltage Range. Ultralow Quiescent Current and Low Ripple Burst. Mode. Operation: IQ = 6µA
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LT8330 Low IQ Boost/SEPIC/ Inverting Converter with 1A, 60V Switch
FeaTures DescripTion
n
3V to 40V Input Voltage Range
The LT®8330 is a current mode DC/DC converter capable n
Ultralow Quiescent Current and Low Ripple Burst
of generating either positive or negative output voltages
Mode
®
Operation: IQ = 6µA
using a single feedback pin. It can be configured as a n
1A, 60V Power Switch
boost, SEPIC or inverting converter consuming as low as n
Positive or Negative Output Voltage Programming
6µA of quiescent current. Low ripple Burst Mode opera-
with a Single Feedback Pin
tion maintains high efficiency down to very low output n
Fixed 2MHz Switching Frequency
currents while keeping the output ripple below 15mV in n Accurate 1.6V EN/UVLO Pin Threshold a typical application. The internally compensated current n Internal Compensation and Soft-Start mode architecture results in stable operation over a wide n Low Profile (1mm) ThinSOT™ Package range of input and output voltages. Integrated soft-start n Low Profile (0.75mm) 8-Lead (3mm × 2mm) DFN and frequency foldback functions are included to control Package inductor current during start-up. The 2MHz operation combined with small package options, enables low cost, area efficient solutions.
applicaTions
L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the n Industrial and Automotive property of their respective owners. n Telecom n Medical Diagnostic Equipment n Portable Electronics
Typical applicaTion 48V Boost Converter Efficiency and Power Loss
100 1000 6.8µH V VOUT IN 90 900 12V 48V 4.7µF 4.7µF 135mA 80 800 POWER LOSS (mW) VIN SW 70 700 LT8330 60 600 1M 4.7pF EN/UVLO 50 500 FBX 40 400 V INT CC GND EFFICIENCY (%) 30 300 34.8k 1µF 20 200 EFFICIENCY 10 100 POWER LOSS 0 0 0 40 80 120 160 LOAD CURRENT (mA) 8330 TA01b 8330fa For more information www.linear.com/LT8330 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
FeaTures DescripTion
n
3V to 40V Input Voltage Range
The LT®8330 is a current mode DC/DC converter capable n
Ultralow Quiescent Current and Low Ripple Burst
of generating either positive or negative output voltages
Mode
®
Operation: IQ = 6µA
using a single feedback pin. It can be configured as a n
1A, 60V Power Switch
boost, SEPIC or inverting converter consuming as low as n
Positive or Negative Output Voltage Programming
6µA of quiescent current. Low ripple Burst Mode opera-
with a Single Feedback Pin
tion maintains high efficiency down to very low output n
Fixed 2MHz Switching Frequency
currents while keeping the output ripple below 15mV in n Accurate 1.6V EN/UVLO Pin Threshold a typical application. The internally compensated current n Internal Compensation and Soft-Start mode architecture results in stable operation over a wide n Low Profile (1mm) ThinSOT™ Package range of input and output voltages. Integrated soft-start n Low Profile (0.75mm) 8-Lead (3mm × 2mm) DFN and frequency foldback functions are included to control Package inductor current during start-up. The 2MHz operation combined with small package options, enables low cost, area efficient solutions.
applicaTions
L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the n Industrial and Automotive property of their respective owners. n Telecom n Medical Diagnostic Equipment n Portable Electronics
Typical applicaTion 48V Boost Converter Efficiency and Power Loss
100 1000 6.8µH V VOUT IN 90 900 12V 48V 4.7µF 4.7µF 135mA 80 800 POWER LOSS (mW) VIN SW 70 700 LT8330 60 600 1M 4.7pF EN/UVLO 50 500 FBX 40 400 V INT CC GND EFFICIENCY (%) 30 300 34.8k 1µF 20 200 EFFICIENCY 10 100 POWER LOSS 0 0 0 40 80 120 160 LOAD CURRENT (mA) 8330 TA01b 8330fa For more information www.linear.com/LT8330 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts