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LM2727

ACTIVE

2.2-V to 16-V, 2-MHz, N-channel FET synchronous buck controller with over and undervoltage latch-off

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TPS546A24A ACTIVE 2.95-V to 18-V, stackable 10-A synchronous SWIFT™ buck converter with pin-strapping and PMBus Stackable (x4) with frequency synchronization and extended positive operating temperature range.

Product details

Vin (min) (V) 2.2 Vin (max) (V) 16 Vout (min) (V) 0.6 Vout (max) (V) 13.5 Iout (max) (A) 20 Iq (typ) (mA) 1.5 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 2000 Features Enable Operating temperature range (°C) 0 to 125 Regulated outputs (#) 1 Number of phases 1 Rating Catalog Control mode Voltage mode Type Controller
Vin (min) (V) 2.2 Vin (max) (V) 16 Vout (min) (V) 0.6 Vout (max) (V) 13.5 Iout (max) (A) 20 Iq (typ) (mA) 1.5 Switching frequency (min) (kHz) 50 Switching frequency (max) (kHz) 2000 Features Enable Operating temperature range (°C) 0 to 125 Regulated outputs (#) 1 Number of phases 1 Rating Catalog Control mode Voltage mode Type Controller
TSSOP (PW) 14 32 mm² 5 x 6.4
  • Input Power from 2.2V to 16V
  • Output Voltage Adjustable Down to 0.6V
  • Power Good flag, Adjustable Soft-Start and Output Enable for Easy Power Sequencing
  • Output Over-Voltage and Under-Voltage Latch-Off (LM2727)
  • Output Over-Voltage and Under-Voltage Flag (LM2737)
  • Reference Accuracy: 1.5% (0°C - 125°C)
  • Current Limit Without Sense Resistor
  • Soft Start
  • Switching Frequency from 50 kHz to 2 MHz
  • TSSOP-14 Package

All trademarks are the property of their respective owners.

  • Input Power from 2.2V to 16V
  • Output Voltage Adjustable Down to 0.6V
  • Power Good flag, Adjustable Soft-Start and Output Enable for Easy Power Sequencing
  • Output Over-Voltage and Under-Voltage Latch-Off (LM2727)
  • Output Over-Voltage and Under-Voltage Flag (LM2737)
  • Reference Accuracy: 1.5% (0°C - 125°C)
  • Current Limit Without Sense Resistor
  • Soft Start
  • Switching Frequency from 50 kHz to 2 MHz
  • TSSOP-14 Package

All trademarks are the property of their respective owners.

The LM2727 and LM2737 are high-speed, synchronous, switching regulator controllers. They are intended to control currents of 0.7A to 20A with up to 95% conversion efficiencies. The LM2727 employs output over-voltage and under-voltage latch-off. For applications where latch-off is not desired, the LM2737 can be used. Power up and down sequencing is achieved with the power-good flag, adjustable soft-start and output enable features. The LM2737 and LM2737 operate from a low-current 5V bias and can convert from a 2.2V to 16V power rail. Both parts utilize a fixed-frequency, voltage-mode, PWM control architecture and the switching frequency is adjustable from 50kHz to 2MHz by adjusting the value of an external resistor. Current limit is achieved by monitoring the voltage drop across the on-resistance of the low-side MOSFET, which enhances low duty-cycle operation. The wide range of operating frequencies gives the power supply designer the flexibility to fine-tune component size, cost, noise and efficiency. The adaptive, non-overlapping MOSFET gate-drivers and high-side bootstrap structure helps to further maximize efficiency. The high-side power FET drain voltage can be from 2.2V to 16V and the output voltage is adjustable down to 0.6V.

The LM2727 and LM2737 are high-speed, synchronous, switching regulator controllers. They are intended to control currents of 0.7A to 20A with up to 95% conversion efficiencies. The LM2727 employs output over-voltage and under-voltage latch-off. For applications where latch-off is not desired, the LM2737 can be used. Power up and down sequencing is achieved with the power-good flag, adjustable soft-start and output enable features. The LM2737 and LM2737 operate from a low-current 5V bias and can convert from a 2.2V to 16V power rail. Both parts utilize a fixed-frequency, voltage-mode, PWM control architecture and the switching frequency is adjustable from 50kHz to 2MHz by adjusting the value of an external resistor. Current limit is achieved by monitoring the voltage drop across the on-resistance of the low-side MOSFET, which enhances low duty-cycle operation. The wide range of operating frequencies gives the power supply designer the flexibility to fine-tune component size, cost, noise and efficiency. The adaptive, non-overlapping MOSFET gate-drivers and high-side bootstrap structure helps to further maximize efficiency. The high-side power FET drain voltage can be from 2.2V to 16V and the output voltage is adjustable down to 0.6V.

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Type Title Date
* Data sheet LM2727/2737 N-Chan FET Synch Buck Reg Cntrlr for Low Output Volt datasheet (Rev. D) 28 Mar 2013
User guide LM2727 Buck Controller Evaluation Module User's Guide (Rev. D) PDF | HTML 23 Feb 2022
User guide LM2742 Buck Controller Evaluation Module User's Guide (Rev. B) PDF | HTML 24 Jan 2022
Analog Design Journal Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics 21 Jul 2016

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Evaluation board

LM2727EVAL — N-Channel FET Synchronous Buck Regulator Controller for Low Output Voltages

N-Channel FET Synchronous Buck Regulator Controller

User guide: PDF | HTML
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