LM22677TJE-ADJ/NOPB Part Information

Details for LM22677TJE-ADJ/NOPB by Texas Instruments

Electronic & Electrical Components > Semiconductors - ICs > Power Management

Part Description

The LM22677 switching regulator provides all of the functions necessary to implement an efficient highvoltage step-down (buck) regulator using a minimum of external components. This easy-to-use regulator incorporates a 42-V N-channel MOSFET switch that can provide up to 5 A of load current. Excellent line and load regulation along with high efficiency (> 90%) are featured. Voltage mode control offers short minimum on-time, allowing the widest ratio between input and output voltages. Internal loop compensation means that the user is free from the tedious task of calculating the loop compensation components. Fixed 5-V output and adjustable output voltage options are available. The default switching frequency is set at 500 kHz, thus allowing for small external components and good transient response. In addition, the frequency can be adjusted over a range of 200 kHz to 1 MHz with a single external resistor. The internal oscillator can be synchronized to a system clock or to the oscillator of another regulator. A precision enable input allows simplification of regulator control and system power sequencing. In shutdown mode the regulator draws only 25 µA (typical). The LM22677 also has built-in thermal shutdown, and current limiting to protect against accidental overloads. The LM22677 device is a member of Texas Instruments' SIMPLE SWITCHER® family. The SIMPLE SWITCHER concept provides for an easy-touse complete design using a minimum number of external components and the TI WEBENCH design tool. TI's WEBENCH tool includes features such as external component calculation, electrical simulation, thermal simulation, and Build-It boards for easy design-in.

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Part Features

  • 100-mu03a9 N-Channel MOSFET
  • 500-kHz Default Switching Frequency
  • Adjustable Switching Frequency and Synchronization
  • Fully WEBENCHu00ae Enabled
  • Integrated Boot-Strap Diode
  • Integrated Soft-Start
  • Internally Compensated Voltage Mode Control
  • LM22677-Q1 is an Automotive-Grade Product that is AEC-Q100 Grade 1 Qualified (u201340u00b0C to +125u00b0C Operating Junction Temperature)
  • NDR (Exposed Pad)
  • Output Voltage Options: u2013 -ADJ (Outputs as Low as 1.285 V) u2013 -5.0 (Output Fixed to 5 V)
  • Precision Enable Input
  • Stable With Low ESR Ceramic Capacitors
  • Wide Input Voltage Range: 4.5 V to 42 V
  • u00b11.5% Feedback Reference Accuracy
  • u201340u00b0C to +125u00b0C Operating Junction Temperature Range

Part Specifications

Topology Buck (Step Down)
Input Voltage Min 4.5V
Input Voltage Max 42V
No. of Outputs 1Outputs
DC / DC Converter IC Case TO-263
No. of Pins 7Pins
Output Current 5A
Output Voltage Min 1.285V
Output Voltage Max 37V
Switching Frequency 1MHz
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 1 - Unlimited
SVHC No SVHC (27-Jun-2018)
Accuracy % 1.5%
Adjustable Output Voltage Max 1.311V
Adjustable Output Voltage Min 1.259V
Base Number 22677
Frequency 1MHz
Operating Temperature Min -40°C
Operating Temperature Range -40°C to +125°C
Output Current Max 5A
Primary Input Voltage 42V
Supply Voltage Min 4.5V
Supply Voltage Typ 12V
Switch Output Current Isw Max 8.75A
Termination Type Surface Mount Device
Voltage Regulator Type Step Down (Buck)
RoHS Compliant

Alternative Part Descriptions

  • SIMPLE SWITCHER 5.0A,LM22677TJE-ADJ | RS Components
  • SIMPLESWITH, 5.0A 4.5~42VIN, 7TO263; Topology:Buck (Step Down); Input Voltage Min:4.5V; Input Voltage Max:42V; No. of Outputs:1Outputs; DC / DC Converter IC Case:TO-263; No. of Pins:7Pins; Output Current:5A; Output Voltage RoHS Compliant: Yes | Newark Electronics
  • SIMPLE SWITCHER® 4.5V to 42V, 5A Step-Down DC/DC Switching Reg. with Frequency Synchronization | Texas Instruments
  • Switching Regulator IC [Texas Instruments] LM22677TJE-ADJ/NOPB Switching Regulator IC | Distrelec

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