L6997S:Step Down Controller for Low Voltage Operations

The device is a high efficient solution for networking dc/dc modules and mobile applications compatible with 3.3V bus and 5V bus.

It's able to regulate an output voltage as low as 0.6V. The constant on time topology assures fast load transient response. The embedded voltage feed-forward provides nearly constant switching frequency operation in spite of a wide input voltage range.

An integrator can be introduced in the control loop to reduce the static output voltage error.

The remote sensing improves the static and dynamic regulation, recovering the wires voltage drop.

Pulse skipping technique reduces power consumption at light loads. Drivers current capability allows output currents in excess of 20A.

Key Features

  • OVP,UVP LATCHED PROTECTIONS
  • REMOTE SENSING
  • POWER GOOD AND OVP SIGNALS
  • 600µA TYP QUIESCENT CURRENT
  • 94% EFFICIENCY FROM 3.3V TO 2.5V
  • PULSE SKIPPING AT LIGTH LOADS
  • SELECTABLE SINKING MODE
  • 0.6V, ±1% VREF
  • FROM 3V TO 5.5V VCC RANGE
  • 1V TO 35V INPUT VOLTAGE RANGE
  • MINIMUM OUTPUT VOLTAGE AS LOW AS 0.6V
  • VERY FAST LOAD TRANSIENTS
  • LOSSLESS CURRENT LIMIT, AVAILABLE ALSO IN SINKING MODE
  • CONSTANT ON TIME TOPOLOGY
产品规格
DescriptionVersionSize
DS3920: Step down controller for low voltage operations1.2493 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
L6997STRTSSOP 20Tape And Reel--NECEAR99MALAYSIA
L6997STSSOP 20Tube--NECEAR99MALAYSIA
质量和可靠性
型号PackageGradeRoHS Compliance GradeMaterial Declaration**
L6997STRTSSOP 20IndustrialEcopack2
L6997STSSOP 20IndustrialEcopack2
Step down controller for low voltage operations L6997S
circuit_diagram_10565_thumbnail.png L6997S
Very low drop voltage regulators with inhibit KFXX