illustrate

The TPS43000 is a high frequency, voltage mode, synchronous PWM controller that can be used in buck, boost, SEPIC or flyback topologies. This highly flexible, full-featured controller is designed to drive one (one N-channel and one P-channel) to an external MOSFET, using it within favorable output voltage and power ranges. With automatic PFM mode, shutdown less than 1 microampere, sleep mode less than 100 microamps, and the entire operation less than 2 mA current at 1 MHz, it is ideal for setting up high-efficiency, DC-to-DC converters.

The TPS43000 operates over a wide input voltage range of 1.8 V to 9.0 V, and typical sources of power are distributed power systems, 2 to 4 nickel or alkaline batteries, or a pair of two Li-Ion batteries.

characteristic

• High frequency (2-MHz) voltage mode PWM controller
• 1.8 V to 9.0 V input voltage range
• 0.8 V to 8.0 V output voltage range (advanced in nonsynchronous boost topologies)
• High efficiency buck, boost, SEPIC or flyback (buck-boost) topologies
• High efficiency of synchronous rectification
• Drive external MOSFETs for high-current applications
• Fixed frequency PWM or pulse frequency modulation automatic (PFM) mode can be synchronized
• Built-in soft start
• User-programmable intermittent or continuous conduction mode
• Selectable pulses are protected by pulse current limit or hiccup mode
• apply
  • Network devices
  • server
  • base station
  • Cellular
  • Satellite phone
  • GPS devices
  • Digital and handheld cameras
  • Personal (PDA) digital assistant