DC/DC Switching Regulator, Synchronous, 2 Output, 2.5 V - 5.5 V in, 5V/400 mA out, 2.7 MHz, DFN-10

LTC3619BEDD#PBF - DC/DC Switching Regulator, Synchronous, 2 Output, 2.5 V - 5.5 V in, 5V/400 mA out, 2.7 MHz, DFN-10

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Product Overview

The LTC3619BEDD#PBF is a dual monolithic synchronous Buck Regulator using a constant frequency current mode architecture. The input supply voltage range is 2.5 to 5.5V, making it ideal for Li-ion and USB powered applications. 100% duty cycle capability provides low dropout operation, extending the run time in battery-operated systems. Low output voltages are supported with the 0.6V feedback reference voltage. Channel 1 and channel 2 can supply 400 and 800mA output current, respectively. TheLTC3619B's programmable average input current limit is ideal for USB applications and for point-of-load power supplies because the LTC3619B's limited input current will still allow its output to deliver high peak load currents without collapsing the input supply. When the sum of both channels' currents exceeds the input current limit, channel 2 is current limited while channel 1 remains regulated. The operating frequency is internally set at 2.25MHz allowing the use of small surface mount inductors.
  • Up to 96% efficiency dual step-down outputs
  • Low noise pulse-skipping operation at light loads
  • Power good output voltage monitor for each channel
  • Independent internal soft-start for each channel
  • Current mode operation for excellent line and load transient response
  • Short-circuit protected
  • ±2% Output voltage accuracy
  • 100% Duty cycle low dropout operation


Communications & Networking, Portable Devices, Power Management

Product Information

2 Output
Synchronous Buck (Step Down)
Cut Tape
MSL 1 - Unlimited
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