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LTC3414EFE#PBF

4A 4MHz Monolithic Synchronous Buck Regulator, 2.25-5.5V in, 95% Eff, TSSOP-20

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Manufacturer Part：

LTC3414EFE#PBF

Package：

TSSOP-20 EP (6.6 x 4.5 x 1.05 mm, exposed pad)

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Description

Product Overview

The LTC3414EFE#PBF from Analog Devices is a 4 A, 4 MHz monolithic synchronous step-down regulator with 67 mOhm internal switch. It operates from 2.25 V to 5.5 V input, delivers up to 4 A output current with adjustable output from 0.8 V to 5 V, and achieves up to 95% efficiency. The device features selectable Burst Mode or forced continuous operation in a 20-lead TSSOP package with exposed pad.

Key Specifications

Topology Monolithic Synchronous Buck
Input Voltage 2.25 V to 5.5 V
Output Voltage 0.8 V to 5 V (Adjustable)
Output Current 4 A
Switching Frequency 300 kHz to 4 MHz (Programmable)
Internal Switch RDS(on) 67 mOhm (top + bottom)
Efficiency Up to 95%
Quiescent Current 64 µA
Reference Voltage 0.8 V (±2%)
Package TSSOP-20 EP (6.6 x 4.5 mm)
Operating Temperature -40°C to 85°C

Features

  • 4 A output current with internal 67 mOhm synchronous switch
  • Programmable frequency: 300 kHz to 4 MHz
  • Selectable Burst Mode or forced continuous operation
  • Adjustable burst clamp for output ripple control
  • Synchronizable switching frequency
  • 100% duty cycle for low dropout operation

Applications

  • Point-of-load regulation in distributed power systems
  • Notebook computer power supplies
  • Portable instruments and battery-powered devices
  • FPGA and processor core voltage regulation
  • Telecom and networking equipment

The LTC3414EFE#PBF from Analog Devices is a high-efficiency monolithic synchronous step-down DC/DC converter utilizing a constant-frequency current-mode architecture. It operates from 2.25 V to 5.5 V input and provides a regulated output from 0.8 V to 5 V at up to 4 A. The internal 67 mOhm synchronous power switch eliminates the need for an external Schottky diode, increasing efficiency. Switching frequency is programmable from 300 kHz to 4 MHz via an external resistor and can be synchronized to an external clock. The device supports Burst Mode operation with adjustable burst clamp for high efficiency at light loads, or forced continuous operation for reduced noise. OPTI-LOOP compensation optimizes transient response across a wide range of loads and output capacitors.

The LTC3414EFE#PBF uses a constant-frequency current-mode control architecture. An internal oscillator sets the switching frequency (300 kHz to 4 MHz) based on the external RT resistor. The top and bottom internal MOSFET switches (67 mOhm combined) alternate to step down the input voltage. Current-mode control simplifies loop compensation and provides inherent current limiting. In Burst Mode, the device delivers energy in controlled bursts and enters sleep mode between bursts, reducing gate charge losses at light loads. The burst clamp level is set via the SYNC/MODE pin voltage, allowing the user to trade off between output ripple and efficiency. In forced continuous mode, the device switches continuously regardless of load, reducing output ripple and noise. The 100% duty cycle mode enables low dropout operation by keeping the top switch on continuously.

Pin Name Type Function
1 RUN Input Enable / run control
2 ITH I/O Error amplifier compensation
3 VFB Input Feedback voltage (0.8V reference)
4 SGND Ground Signal ground
5-6 SW Output Switch node
7-8 PGND Ground Power ground
9 PGOOD Output Power good indicator
10 BST Power Bootstrap for top switch
11-12 SVIN Power Signal input supply
13 PVIN Power Power input supply
14 SVIN Power Signal input supply
15 RT Input Frequency set resistor
16 SYNC/MODE I/O External sync / mode control
17 TR/SS I/O Soft-start / tracking
18 SGND Ground Signal ground
19-20 NC – No connect
  • Point-of-load DC-DC conversion in distributed power systems
  • Notebook and laptop computer core and I/O voltage regulation
  • Portable instruments with battery operation
  • FPGA and DSP core voltage supplies (1.2V, 1.8V, 2.5V)
  • Networking and telecom equipment POL converters
Manufacturer Part Number Package Notes
Analog Devices LTC3414IFE#PBF TSSOP-20 EP -40°C to 125°C I-grade
Analog Devices LTC3412EFE#PBF TSSOP-20 EP 2.5A version, same family
Texas Instruments TPS62150RGTR QFN-16 3A, 4MHz, 3-17V input
Monolithic Power MP8860DN-LF-Z QFN-22 8A, 4MHz, synchronous buck
Richtek RT8012AGQW WQFN-20 4A, 1.5MHz, synchronous buck
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Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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