LT3693
LT3693 is 2.4MHz Step-Down Switching Regulator manufactured by Linear Technology.
.Data Sheet.co.kr
LT3693 36V, 3.5A, 2.4MHz Step-Down Switching Regulator Features
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- DESCRIPTIO
Wide Input Range: 3.6V to 36V 3.5A Maximum Output Current Adjustable Switching Frequency: 200k Hz to 2.4MHz Low Shutdown Current: IQ < 1μA Integrated Boost Diode Synchronizable Between 250k Hz to 2MHz Power Good Flag Saturating Switch Design: 95m On-Resistance 0.790V Feedback Reference Voltage Output Voltage: 0.79V to 30V Thermal Protection Soft-Start Capability Small 10-Pin Thermally Enhanced MSOP and (3mm × 3mm) DFN Packages
The LT®3693 is an adjustable frequency (200k Hz to 2.4MHz) monolithic buck switching regulator that accepts input voltages up to 36V. A high efficiency 95m switch is included on the die along with a boost Schottky diode and the necessary oscillator, control, and logic circuitry. Current mode topology is used for fast transient response and good loop stability. Shutdown reduces input supply current to less than 1μA while a resistor and capacitor on the RUN/SS pin provide a controlled output voltage ramp (soft-start). A power good flag signals when VOUT reaches 91% of the programmed output voltage. The LT3693 is available in 10-Pin MSOP and 3mm × 3mm DFN packages with exposed pads for low thermal resistance.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
U APPLICATIO S
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- Automotive Battery Regulation Power for Portable Products Distributed Supply Regulation Industrial Supplies Wall Transformer Regulation
TYPICAL APPLICATIO
VIN 6.3V TO 36V VIN OFF ON 15k 10m F 680p F VC RT PG 63.4k SYNC RUN/SS
5V Step-Down Converter
VOUT 5V 3.5A BD EFFICIENCY (%) BOOST 0.47m F 4.7m H LT3693 SW 100
536k GND FB 100k 47m F
3693 TA01a
Efficiency
VIN = 12V 90 VIN = 34V 80 VIN = 24V 70 60 VOUT = 5V L = 4.7μH f = 600k Hz 0 0.5 2 1.5 1 2.5 OUTPUT CURRENT (A) 3 3.5
3693 G01
3693f
Datasheet pdf
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