LT8471 Datasheet | Linear Technology

LT8471 Dual Multitopology DC/DC Converters with 2A Switches and Synchronization Features n Dual 2A and One 500m A, 50V Internal Power Switch Channels n 2A Primary Channels Can Be Buck, Boost, SEPIC, ZETA, Flyback or Inverting DC/DC Converter n 500m A Skyhook Channel Efficiently Generates Boosted Input Voltage n Wide Input Voltage Range of 2.6V to 50V n UVLO and OVLO Programmable on OV/UV Pin n Soft-Start Programmable for Each Channel n Fixed Frequency PWM (Set by RT Pin or Synchronized to External Clock) n Anti-Phase Switching Reduces Input Ripple n20-Lead TSSOP Package Applications n Dual Rail Power for Signal Chain. n Buck/Buck, Buck/Boost, Boost/Boost, Boost/Invert, Invert/Invert, Buck/Invert Description The LT®8471 is a dual PWM DC/DC converter containing two internal 2A, 50V switches and an additional 500m A switch to facilitate step-down and inverting conversion. Each 2A channel can be independently configured as a buck, boost, SEPIC, flyback or inverting converter. Capable of generating positive and negative outputs from a single input rail, the LT8471 is ideal for many local power supply designs. The LT8471 has an adjustable oscillator, set by a resistor placed from the RT pin to ground. Additionally, the LT8471 can be synchronized to an external clock. The free running or synchronized switching frequency range of the part can be set between 100k Hz and 2MHz. Additional Features such as frequency foldback, soft-start, and power good are integrated. The LT8471 is available in a 20-lead TSSOP package. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Typical Application 6V to 32V to ±5V, Dual DC/DC Converter 6V TO 32V 2.2µF 1µF 1µF 15µH 475k 100k 100k 0.1µF VIN1 VIN2 SHOUT LT8471 C3 C1 FB1 E1 OV/UV PG1 PG2 SS1 SS2 SYNC C2 FB2 E2 RT 0.1µF 187k 2.2µF 10µH 2.2µF 316k 59k...