LM2675 Adjustable 1A Step-Down Voltage Regulator – Datasheet

The LM2675 regulator is a monolithic integrated circuit built with an LMDMOS process. The regulator provides all the active functions for a step-down (buck) switching regulator, capable of driving a 1A load current with excellent line and load regulation. This device is available in fixed output voltages of 3.3V, 5.0V, 12V, and an adjustable output version. This feature greatly simplifies the design of switch-mode power supplies using these advanced ICs. Also included in the datasheet are selector guides for diodes and capacitors designed to work in switch-mode power supplies.

LM2675 Pinout

LM2674 Pin Configuration

Pin No	Pin Name	Description
1	Cb	Bootstrap Capacitor Pin
2	*	No Connection
3	*	No Connection
4	FB	FeedBack BootStrap Pin
5	ON/OFF’	On/Complement Of Off Pin
6	GND	Ground Pin
7	Vin	Input Voltage Pin
8	Vsw	Switch Voltage Pin

LM2675 Key Features

• Uses readily available standard inductors
• 3.3V, 5.0V, 12V, and adjustable output versions
• Adjustable version output voltage range: 1.21V to 37V
• ±1.5% max output voltage tolerance over line and load conditions
• Guaranteed 1A output load current
• 0.25Ω DMOS Output Switch
• Wide input voltage range: 8V to 40V
• 260 kHz fixed frequency internal oscillator
• TTL shutdown capability, low power standby mode
• Thermal shutdown and current limit protection

Application

• Simple High Efficiency (>90%) Step-Down (Buck) Regulator
• Efficient Pre-Regulator for Linear Regulators
• Positive-to-Negative Converter

You can download this datasheet for LM2675 Adjustable 1A Step-Down Voltage Regulator – Datasheet from the link given below: