LM2696

ACTIVE

3A, Constant On Time Buck Regulator

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Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 4.5 Vin (max) (V) 24 Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 500 Features Power good Control mode Constant on-time (COT) Vout (min) (V) 1.254 Vout (max) (V) 20 Iq (typ) (µA) 1000 Duty cycle (max) (%) 70
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 4.5 Vin (max) (V) 24 Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 500 Features Power good Control mode Constant on-time (COT) Vout (min) (V) 1.254 Vout (max) (V) 20 Iq (typ) (µA) 1000 Duty cycle (max) (%) 70
HTSSOP (PWP) 16 32 mm² 5 x 6.4
  • Input Voltage Range of 4.5V–24V
  • Constant On-Time
  • No Compensation Needed
  • Maximum Load Current of 3A
  • Switching Frequency of 100 kHz–500 kHz
  • Constant Frequency Across Input Range
  • TTL Compatible Shutdown Thresholds
  • Low Standby Current of 12 µA
  • 130 mΩ Internal MOSFET Switch

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  • Input Voltage Range of 4.5V–24V
  • Constant On-Time
  • No Compensation Needed
  • Maximum Load Current of 3A
  • Switching Frequency of 100 kHz–500 kHz
  • Constant Frequency Across Input Range
  • TTL Compatible Shutdown Thresholds
  • Low Standby Current of 12 µA
  • 130 mΩ Internal MOSFET Switch

All trademarks are the property of their respective owners.

The LM2696 is a pulse width modulation (PWM) buck regulator capable of delivering up to 3A into a load. The control loop utilizes a constant on-time control scheme with input voltage feed forward. This provides a topology that has excellent transient response without the need for compensation. The input voltage feed forward ensures that a constant switching frequency is maintained across the entire VIN range.

The LM2696 is capable of switching frequencies in the range of 100 kHz to 500 kHz. Combined with an integrated 130 mΩ high side NMOS switch the LM2696 can utilize small sized external components and provide high efficiency. An internal soft-start and power-good flag are also provided to allow for simple sequencing between multiple regulators.

The LM2696 is available with an adjustable output in an exposed pad HTSSOP-16 package.

The LM2696 is a pulse width modulation (PWM) buck regulator capable of delivering up to 3A into a load. The control loop utilizes a constant on-time control scheme with input voltage feed forward. This provides a topology that has excellent transient response without the need for compensation. The input voltage feed forward ensures that a constant switching frequency is maintained across the entire VIN range.

The LM2696 is capable of switching frequencies in the range of 100 kHz to 500 kHz. Combined with an integrated 130 mΩ high side NMOS switch the LM2696 can utilize small sized external components and provide high efficiency. An internal soft-start and power-good flag are also provided to allow for simple sequencing between multiple regulators.

The LM2696 is available with an adjustable output in an exposed pad HTSSOP-16 package.

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* Data sheet LM2696 3A, Constant On Time Buck Regulator datasheet (Rev. B) 03 May 2013
Analog Design Journal Control-Mode Quick Reference Guide (Rev. B) PDF | HTML 29 Aug 2023
User guide AN-1410 LM2696 Demonstration Board (Rev. B) 24 Apr 2013

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HTSSOP (PWP) 16 Ultra Librarian

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