30077040 8-Lead Plastic PSOP-8…

LM22675MR-5.0

Voltage Regulators - DC DC Switching RegulatorsPSOP-8

IC REG BUCK 5V 1A 8-PSOP

LM22675MR-5.0 is a 1A step-down switching regulator with fixed 5V output, 4.5V to 42V input voltage, 500kHz switching frequency, PSOP-8 package, featuring precision enable pin and thermal shutdown protection.Checked against the datasheet

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Technical parameters

Key specs

Input voltage4.5 ~ 42 V

Output voltage5 V

Output current1 AMax

Switching frequency400 ~ 600 kHz

Datasheet-verified parameters

22 items

Parameter	Value and test conditions	Source
Input Voltage Range	4.5V to 42V
Output Voltage	5.0V (Fixed)
Output Current	1A
Switching Frequency	Typ 500 kHz, Min 400 kHz, Max 600 kHz
Package	PSOP-8 (Exposed Pad)
Operating Junction Temperature	-40°C to +125°C
Grade	Commercial (Non-Automotive)
Quiescent Current	Typ 3.4 mA, Max 6 mA (V_FB=5V)
Standby Quiescent Current	Typ 25 µA, Max 40 µA (EN Pin = 0V)
Current Limit	Typ 1.5 A, Min 1.3/1.2 A, Max 1.7/1.8 A
Switch On-Resistance	Typ 0.2 Ω, Max 0.24/0.32 Ω
Feedback Voltage	Typ 5.0 V, Min 4.925/4.9 V, Max 5.075/5.1 V (V_IN=8V to 42V)
Enable Threshold Voltage	Typ 1.6 V, Min 1.3 V, Max 1.9 V (Falling)
Thermal Shutdown Threshold	Typ 150 °C
Thermal Resistance	Typ 60 °C/W (MR package, Junction to ambient)
Absolute Maximum Rating - Input Voltage	43V (VIN to GND)
Absolute Maximum Rating - Enable Pin Voltage	-0.5V to 6V
Absolute Maximum Rating - Switch Pin Voltage	-5V to V_IN (SW to GND)
Absolute Maximum Rating - Bootstrap Pin Voltage	V_SW + 7V
Absolute Maximum Rating - Feedback Pin Voltage	-0.5V to 7V
Operating Ratings - Supply Voltage	4.5V to 42V
Operating Ratings - Junction Temperature Range	-40°C to +125°C

All parameters (7)ExpandCollapse

Power
Supply Voltage ( $V_{IN}$ )	4.5V to 42V
Environment and package
Junction Temperature Range	-40°C to +125°C
Package Type	PSOP-8 Exposed Pad
Other
$f_O$	500 kHz (Typ)
$I_{CL}$	1.5 A (Typ)
$R_{DS(ON)}$	0.2 Ω (Typ)
$V_{FB}$	5.0 V (Typ)

Pinout and package

Pin	Name	Function	Source
1		BOOT: Bootstrap input, provides gate voltage for high side NFET
2		NC: Not Connected, not electrically connected inside, functions as thermal conductor
3		NC: Not Connected, not electrically connected inside, functions as thermal conductor
4		FB: Feedback pin, inverting input to internal voltage error amplifier
5		EN: Precision enable pin, regulator turns off when pulled low
6		GND: System ground, provide good capacitive decoupling between VIN and this pin
7		VIN: Source input voltage, input to regulator, operates from 4.5V to 42V
8		SW: Switch pin, attaches to the switch node

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DatasheetDatasheet · 556.3 KB · 2026-11-09

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