Using the TPS62750 synchronous step down dc-dc converter can be designed a very simple and efficiency power circuit optimized for USB powered portable applications. TPS62750 can provide up to 1300mA average input current .
With an input voltage range of 2.9 V to 6.0V TPS62750 supports batteries with extended voltage range .
TPS62750 operates at 2.25 MHZ fixed switching frequency . At light loads the TPS62750 enters in Power Save mode .
The TPS62750 can be used in power supplies for USB portable devices and handheld computers .
Main features of the TPS62750 step down dc-dc converter are : >90% efficiency , programmable input current for USB applications , stable output voltage , voltage input from 2.9 to 6 volts , automatic PFM/PWM mode transition , output voltage from 0.8 to 0.85xinput voltage , short circuit and thermal shut down protection .
LTM4615 is a complete 4A dual output DC DC switching regulator mode power supply plus an additional 1.5A VLDO (very low dropout) linear regulator manufactured by Linear Technology.
The LTM4615 dual 4A DC DC converters operate over an input voltage range of 2.375V to 5.5V, and the VLDO operates from a 1.14V to 3.5V input.
The LTM4615 supports output voltages ranging from 0.8V to 5V for the DC DC converters, and 0.4V to 2.6V for the VLDO.
High switching frequency and a current mode architecture enables a very fast transient response to line and load changes without sacrificing stability.
This DC DC regulator can be used in applications like Telecom and Networking Equipment , industrial Power Systems and other low noise applications.
Main features of this DC DC regulator are : Dual 4A Output Power Supply with 1.5A VLDO™ , Short-Circuit and Overtemperature Protection , Power Good Indicators , Input Voltage Range: 2.375V to 5.5V , 4A DC Typical, 5A Peak Output , 0.8V Up to 5V Output , Parallelable , ±2% Total DC Output Error Output Voltage Tracking , Up to 95% Efficiency , Programmable Soft-Start , VLDO 1.14V to 3.5V Input Range , VLDO 0.4V to 2.6V, 1.5A Output , ±1% Total DC Output Error.
LTC3601 from Linear Technology is an monolithic synchronous buck regulator using a phase-lockable controlled on-time, capable of supplying up to 1.5A of output current.
The LTC3601 operating supply voltage range is from 4V to 15V making it suitable for a wide range of power supply applications.
The operating frequency of the LTC3601 buck regulator is programmable from 800kHz to 4MHz with an external resistor enabling the use of small surface mount inductors.
The LTC3601 buck regulator can operate in two modes: Burst Mode operation and forced continuous mode to allow the user to optimize output voltage ripple, noise, and light load efficiency for a given application.
Main features of this regulator are : 4V to 15V Input Voltage Range , 1.5A Output Current , Up to 96% Efficiency , Very Low Duty Cycle Operation, Adjustable Switching Frequency: 800kHz to 4MHz , User Selectable Burst Mode or Forced Continuous Operation , Short-Circuit Protected , Output Voltage Tracking Capability , Programmable Soft-Start .
