LM22677 Series
SIMPLE SWITCHER® 4.5V to 42V, 5A Step-Down DC/DC Switching Reg. with Frequency Synchronization
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
SIMPLE SWITCHER® 4.5V to 42V, 5A Step-Down DC/DC Switching Reg. with Frequency Synchronization
| Part | Output Configuration | Mounting Type | Function | Supplier Device Package | Topology | Operating Temperature [Max] | Operating Temperature [Min] | Output Type | Qualification | Voltage - Input (Max) [Max] | Grade | Frequency - Switching | Synchronous Rectifier | Package / Case | Number of Outputs | Voltage - Input (Min) [Min] | Current - Output | Voltage - Output (Max) [Max] | Voltage - Output (Min/Fixed) [Min] | Voltage - Input [Max] | Voltage - Input [Min] | Utilized IC / Part | Main Purpose | Outputs and Type | Outputs and Type | Board Type | Supplied Contents | Voltage - Output | Voltage - Output (Min/Fixed) | Output Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments LM22677QTJ-ADJ/NOPB | Positive | Surface Mount | Step-Down | TO-263-7 Thin | Buck | 125 ¯C | -40 °C | Adjustable | AEC-Q100 | 42 V | Automotive | 500 kHz | TO-263-7 Thin | 1 | 4.5 V | 5 A | 37 V | 1.285 V | ||||||||||||
Texas Instruments LM22677TJE-ADJ/NOPB | Positive | Surface Mount | Step-Down | TO-263-7 Thin | Buck | 125 ¯C | -40 °C | Adjustable | 42 V | 500 kHz | TO-263-7 Thin | 1 | 4.5 V | 5 A | 37 V | 1.285 V | ||||||||||||||
Texas Instruments LM22677EVAL/NOPB | 500 kHz | 5 A | 42 V | 4.5 V | LM22677 | DC/DC, Step Down | Non-Isolated | 1 | Fully Populated | Board(s) | 3.3 V | |||||||||||||||||||
Texas Instruments LM22677TJ-5.0/NOPB | Positive | Surface Mount | Step-Down | TO-263-7 Thin | Buck | 125 ¯C | -40 °C | 42 V | 500 kHz | TO-263-7 Thin | 1 | 4.5 V | 5 A | 5 V | 27.03 °C/W | |||||||||||||||
Texas Instruments LM22677TJ-ADJ/NOPB | Positive | Surface Mount | Step-Down | TO-263-7 Thin | Buck | 125 ¯C | -40 °C | Adjustable | 42 V | 500 kHz | TO-263-7 Thin | 1 | 4.5 V | 5 A | 37 V | 1.285 V | ||||||||||||||
Texas Instruments LM22677QTJ-5.0/NOPB | Positive | Surface Mount | Step-Down | TO-263-7 Thin | Buck | 125 ¯C | -40 °C | AEC-Q100 | 42 V | Automotive | 500 kHz | TO-263-7 Thin | 1 | 4.5 V | 5 A | 5 V | 27.03 °C/W | |||||||||||||
Texas Instruments LM22677TJE-5.0/NOPB | Positive | Surface Mount | Step-Down | TO-263-7 Thin | Buck | 125 ¯C | -40 °C | 42 V | 500 kHz | TO-263-7 Thin | 1 | 4.5 V | 5 A | 5 V | 27.03 °C/W | |||||||||||||||
Texas Instruments LM22677QTJE-5.0/NOPB | Positive | Surface Mount | Step-Down | TO-263-7 Thin | Buck | 125 ¯C | -40 °C | AEC-Q100 | 42 V | Automotive | 500 kHz | TO-263-7 Thin | 1 | 4.5 V | 5 A | 5 V | 27.03 °C/W |
Key Features
• Wide Input Voltage Range: 4.5 V to 42 VInternally Compensated Voltage Mode ControlStable With Low ESR Ceramic Capacitors100-mΩ N-Channel MOSFETOutput Voltage Options:-ADJ (Outputs as Low as 1.285 V)-5.0 (Output Fixed to 5 V)±1.5% Feedback Reference Accuracy500-kHz Default Switching FrequencyAdjustable Switching Frequency andSynchronization–40°C to +125°C Operating Junction TemperatureRangePrecision Enable InputIntegrated Boot-Strap DiodeIntegrated Soft-StartFully WEBENCH®EnabledLM22677-Q1 is an Automotive-Grade Productthat is AEC-Q100 Grade 1 Qualified (–40°C to+125°C Operating Junction Temperature)NDR (Exposed Pad)Wide Input Voltage Range: 4.5 V to 42 VInternally Compensated Voltage Mode ControlStable With Low ESR Ceramic Capacitors100-mΩ N-Channel MOSFETOutput Voltage Options:-ADJ (Outputs as Low as 1.285 V)-5.0 (Output Fixed to 5 V)±1.5% Feedback Reference Accuracy500-kHz Default Switching FrequencyAdjustable Switching Frequency andSynchronization–40°C to +125°C Operating Junction TemperatureRangePrecision Enable InputIntegrated Boot-Strap DiodeIntegrated Soft-StartFully WEBENCH®EnabledLM22677-Q1 is an Automotive-Grade Productthat is AEC-Q100 Grade 1 Qualified (–40°C to+125°C Operating Junction Temperature)NDR (Exposed Pad)
Description
AI
The LM22677 switching regulator provides all of the functions necessary to implement an efficient high-voltage 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-to-use 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.
The LM22677 switching regulator provides all of the functions necessary to implement an efficient high-voltage 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-to-use 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.