LT3684EMSE#TRPBF Power Path Management IC Switching Voltage Regulators 36V/2A Buck (non BurstMode LT3481)
microchip battery management
,battery charge management ic
LT3684EMSE#TRPBF Power Path Management IC Switching Voltage Regulators 36V/2A Buck (non BurstMode LT3481)
FEATURES
n Wide Input Range: 3.6V to 34V Operating, 36V Maximum
n 2A Maximum Output Current
n Adjustable Switching Frequency: 300kHz to 2.8MHz n Low Shutdown Current: IQ < 1μA
n Integrated Boost Diode
n Power Good Flag
n Saturating Switch Design: 0.18Ω On-Resistance
n 1.265V Feedback Reference Voltage
n Output Voltage: 1.265V to 20V
n Soft-Start Capability
n Small 10-Pin Thermally Enhanced MSOP and
(3mm × 3mm) DFN Packages
APPLICATIONS
n Automotive Battery Regulation n Power for Portable Products
n Distributed Supply Regulation n Industrial Supplies
n Wall Transformer Regulation
DESCRIPTION
The LT®3684 is an adjustable frequency (300kHz to 2.8MHz) monolithic buck switching regulator that accepts input voltages up to 34V (36V maximum). A high efficiency 0.18Ω 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. The LT3684’s high operating frequency allows the use of small, low cost inductors and ceramic capacitors resulting in low output ripple while keeping total solution size to a minimum. The low current shutdown mode 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 90% of the programmed output voltage. The LT3684 is available in 10-Pin MSOP and 3mm × 3mm DFN packages with Exposed Pads for low thermal resistance.
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