DC/DC Controller, Current Mode, 900mV to 5V, 1 Output, Synchronous Boost, 680kHz, MSOP-10

LTC1700EMS#PBF - DC/DC Controller, Current Mode, 900mV to 5V, 1 Output, Synchronous Boost, 680kHz, MSOP-10

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Product Overview

The LTC1700EMS#PBF is a current-mode synchronous step-up DC/DC Controller drives external N-channel and P-channel power MOSFETs using a constant frequency PWM architecture. Current limiting is provided by sensing the voltage drop across the main MOSFET, eliminating the need of a sense resistor. This No RSENSE technique helps the LTC1700 maintain high efficiency at heavy loads while Burst Mode operation ensures high efficiency at light loads, thus providing high efficiencies over a wide range of load currents. It operates at a minimum input voltage as low as 0.9V. The device boasts a ±1.5% output voltage accuracy and consumes only 200µA of quiescent current. In shutdown, it only draws 10µA. To prevent inductor current runaway, the duty cycle is limited to 90%. Overvoltage protection is also provided which shuts both the external MOSFETs off when tripped. High constant operating frequency of 530kHz allows the use of small inductors and output capacitors.
  • No current sense resistor required
  • OPTI-LOOP® Compensation minimizes COUT
  • Selectable Burst Mode® operation
  • Current mode operation for excellent line and load transient response
  • Soft-start reduces supply current transients
  • 1.5% Output voltage accuracy
  • Uses low value, small size, surface mount inductors


Wireless, Communications & Networking, Consumer Electronics, Portable Devices, Power Management, RF Communications

Product Information

1 Output
Synchronous Boost (Step Up)
MSL 1 - Unlimited
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