93% Efficient at 2MHz
42V, 2A (3A Peak) Sync Buck
Actual Size
CM
1
Faster, Smaller, Quieter
The LT 8609 combines high efficiency and high switching frequencies to deliver a very compact synchronous step-down
2A (3A peak) solution. It offers 93% efficiency switching at 2MHz stepping 12V
IN
down to 5V
OUT
, offering a very small
solution footprint while keeping switching noise out of critical frequency bands. Spread spectrum frequency modulation
reduces EMI concerns. The LT8609 delivers 2A of continuous output current and can deliver 3A peak load for up to
®
1 second offering a tiny solution for applications ranging from automotive power systems to GSM modems. Its Burst Mode
operation only requires 2.5µA of quiescent current extending battery life.
®
Features
• Wide Input Voltage Range:
3.0V to 42V
• Ultralow Quiescent Current <2.5µA
• High Efficiency 2MHz
Synchronous Operation 93%
• 2A Maximum Continuous Output,
3A Peak Transient Output
• Spread Spectrum Frequency
Modulation for Low EMI
• Fast Minimum Switch-On Time: 45ns
• Adjustable and Synchronizable:
200kHz to 2.2MHz
• Thermally Enhanced MSOP-10
Package
12V
IN
to 5V
OUT
@ 1A I
OUT
Efficiency vs Switching Frequency
94
92
90
88
Info & Free Samples
www.linear.com/product/LT8609
1-800-4-LINEAR
Efficiency
86
84
82
80
78
76
500
1000
1500
2000
2500
3000
Frequency (kHz)
, LT, LTC, LTM, Linear Technology, the Linear logo and
Burst Mode are registered trademarks of Linear Technology
Corporation.All other trademarks are the property of their
respective owners.
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