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L6997

Features: ` FROM 3V TO 5.5V VCC RANGE.` MINIMUM OUTPUT VOLTAGE AS LOW AS 0.6V.` 1V TO 28V INPUT VOLTAGE RANGE.` CONSTANT ON TIME TOPOLOGY ALLOWS. OPERATION WITH VERYLOW AND HIGH DUTY CYCLES.` VERY FAST LOAD TRANSIENTS.` 0.6V, ±1% VREF.` SELECTABLE SINKING MODE.` LOSSLESS CURRENT LIMIT, AVAILABLE A...

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SeekIC No. : 004389325 Detail

L6997: Features: ` FROM 3V TO 5.5V VCC RANGE.` MINIMUM OUTPUT VOLTAGE AS LOW AS 0.6V.` 1V TO 28V INPUT VOLTAGE RANGE.` CONSTANT ON TIME TOPOLOGY ALLOWS. OPERATION WITH VERYLOW AND HIGH DUTY CYCLES.` VERY F...

L6997 Data Sheet

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Part Number:
L6997
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/10/27

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Product Details

Description



Features:

` FROM 3V TO 5.5V VCC RANGE.
` MINIMUM OUTPUT VOLTAGE AS LOW AS 0.6V.
` 1V TO 28V INPUT VOLTAGE RANGE.
` CONSTANT ON TIME TOPOLOGY ALLOWS. OPERATION WITH VERYLOW AND HIGH DUTY CYCLES.
` VERY FAST LOAD TRANSIENTS.
` 0.6V, ±1% VREF.
` SELECTABLE SINKING MODE.
` LOSSLESS CURRENT LIMIT, AVAILABLE ALSO IN SINKING MODE
` REMOTE SENSING.
` OVP,UVP LATCHED PROTECTIONS.
` 600A TYP QUIESCENT CURRENT.
` POWER GOOD AND OVP SIGNALS.
` PULSE SKIPPING AT LIGTH LOADS.
` 94% EFFICIENCY FROM 3.3V TO 2.5V.


Application

· NETWORKING.
· DC/DC MODULES.
· DISTRIBUTED POWER.
· MOBILE APPLICATIONS.
· CHIP SET, CPU, DSP AND MEMORIES SUPPLY.


Pinout

Connection Diagram


Specifications

Symbol Parameter Value Unit
VCC VCC to GND -0.3 to 6 V
VDR VDR to GND -0.3 to 6 V
  HGATE and BOOT, to PHASE -0.3 to 6 V
  HGATE and BOOT, to PGND -0.3 to 36 V
VPHASE PHASE -0.3-to 30 V
  LGATE to PGND 0.3 to VDR+0.3 V
  ILIM, VFB, VSENSE, NOSKIP, SHDN, PGOOD, OVP, VREF, INT,
GNDSENSE to GND		 -0.3 to VCC+0.3 V
Ptot Power dissipation at Tamb = 25°C 1 W
Tstg Storage temperature range -40 to 150 °C



Description

The L6997 is a high efficient solution for networking dc/dc modules and mobile application compatible with 3.3V bus and 5V bus.

L6997'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. 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.




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