L6725:Voltage mode PWM controller with bootstrap anti-discharging system

The device is a flexible high performance PWM buck controller dedicated for low voltage distributed DC-DC. The input voltage can range from 1.8V to 18V, while the supply voltage can range from 4.5V to 18V. The output voltage is adjustable down to 0.6V.

High peak current gate drivers provide for fast switching to the external power section, and the output current can be in excess of 20A. The device is capable to manage minimum on-times (TON) shorter than 100ns making possible conversions with very low duty cycle and very high switching frequency. In order to guarantee a real overcurrent protection, also with very narrow TON, the current sense is realized both on the high-side and low-side MOSFETs. When necessary, two different current limit protections can be externally set through an external resistor. The device can sink current after the soft-start phase while, during the soft-start, the sink mode capability is disabled in order to allow a proper start-up also in pre-biased output voltage conditions. Other features are over-voltage-protection and thermal shutdown.

Key Features

  • Predictive anti-cross conduction control
  • High current embedded drivers
  • Sink current capability
  • Programmable high-side and low-side RDS(on) sense over-current-protection
  • Pre-bias start up capability
  • Selectable switching frequency 250KHz/500KHz
  • Thermal shut-down
  • Over voltage protection
  • Package: SO16N
  • Soft-start and inhibit
  • External input voltage reference
  • Input voltage range from 1.8V to 18V
  • Adjustable output voltage down to 0.6V with ±0.8% accuracy over line voltage and temperature (0˚C~125˚C)
  • Supply voltage range from 4.5V to 18V
  • 0% to 100% duty cycle
  • Bootstrap anti-discharging system
  • Fixed frequency voltage mode control
产品规格
DescriptionVersionSize
DS4561: Voltage mode PWM controller with bootstrap anti-discharging system5.1812 KB
应用手册
DescriptionVersionSize
AN2439: 27W Output power ultra wide range input flyback converter1.1410 KB
手册
DescriptionVersionSize
Brochure Power management guide05.20167 MB
样片和购买
型号PackagePacking TypeUnit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
L6725SO-16Tube--NECEAR99MALAYSIA
L6725TRSO-16Tape And Reel--NECEAR99CHINA
质量和可靠性
型号PackageGradeRoHS Compliance GradeMaterial Declaration**
L6725SO-16IndustrialEcopack1 (*)
L6725TRSO-16IndustrialEcopack2 (**)
Voltage mode PWM controller with bootstrap anti-discharging system L6725
circuit_diagram_11933_thumbnail.png L6725
27W Output power ultra wide range input flyback converter L6725
Very low drop voltage regulators with inhibit KFXX