Special design techniques and a new high speed process enable high efficiency over a wide input voltage range, and the LT8640’s current mode topology enables fast transient response and excellent loop stability. Other features include internal compensation, a power good flag, output soft-start/tracking and thermal protection.
The LT8640SEV is packaged in a 4mm x 4mm LQFN package. An industrial temperature version, the LT8640SIV, is tested and guaranteed to operate from a –40°C to 125°C operating junction temperature. Pricing starts at $4.65 each for 1,000-piece quantities and both versions are available from stock. For more information, visit www.linear.com/product/
Summary of Features: LT8640S
- Silent Switcher2 Architecture
o Ultralow EMI/EMC Emissions on Any PCB
o Eliminates PCB Layout Sensitivity
o Internal Capacitors for VIN, BST, INTVCC Reduce Radiated EMI
o Spread Spectrum Frequency Modulation
- High Efficiency at High Frequency
- Up to 96% Efficiency at 1MHz
- Up to 95% Efficiency at 2MHz
- Wide Input Voltage Range: 3.4V to 42V
- 6A Maximum Continuous, 7A Peak Output Current
- Ultralow Quiescent Current Burst ModeOperation
o 2.5µA IQ Regulating 12VIN to 3.3VOUT
o Output Ripple < 10mVP-P
- Fast Minimum Switch On-Time: 30ns
- Low Dropout Under All Conditions: 100mV at 1A
- Forced Continuous Mode
- Safely Tolerates Inductor Saturation in Overload
- Adjustable & Synchronizable: 200kHz to 3MHz
- Output Soft-Start & Tracking
- Small 24-Lead 4mm × 4mm LQFN Package
Pricing shown is for budgetary use only and may differ due to local duties, taxes, fees and exchange rates.
Analog Devices just got more Powerful. On March 10, Analog Devices acquired Linear Technology, creating the premier high performance analog company. More info at http://lt.linear.com/07c
