The A4405 simplifies power management in automotive applications by integrating a 2.2 MHz buck pre-regulator, two 5V linear regulators, and a 3.3V DMOS driver. This highly integrated solution offers a wide input voltage range, short-to-battery protection, and robust fault protection for reliable performance in underhood environments.
* Note: If you have issues logging into this feature you may need to enable 3rd party cookies in your browser settings
Download Datasheet
Manufacturer: Allegro MicroSystems, LLC
Win Source Part Number: 168634-A4405KLPTR-T
Category: Integrated Circuits(ICs)
Family: PMIC - Voltage Regulators - Linear+Switching
Family Name: A4405
Introduction Date: September 27, 2012
Country of Origin: Philippines
Estimated EOL Date: 2030
Halogen Free: Compliant
Is this a common-used part?: Yes
Popularity: High
Fake Threat In the Open Market: 36 pct.
Supply and Demand Status: Balance
Switching Regulator, PDSO20
IC REG QUAD BUCK/LINEAR 20TSSOP
PMIC - Voltage Regulators - Linear + Switching 4 Output Step-Down (Buck) (1), Linear (LDO) (3) 2.2MHz 20-TSSOP-EP
IC REG QUAD BUCK/LINEAR 20TSSOP
IC REG QUAD BUCK/LINEAR 20TSSOP
Switching Regulator, PDSO20, Product overview: A4405KLPTR-T from Allegro MicroSystems is a Voltage Regulator IC for stable power rails, DC-DC conversion, battery-powered electronics, automotive modules, and embedded power management. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include key electrical ratings, package details, and application requirements. Search-friendly keywords include voltage regulator, LDO, buck converter, boost converter, power rail, Voltage Regulator IC, Linear & Switching Voltage Regulators. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 776-A4405KLPTR-T can be used for catalog matching and distributor lookup.
IC REG QUAD BUCK/LINEAR 20TSSOP
PMIC - Voltage Regulators - Linear Switching 4 Output Step-Down (Buck) (1), Linear (LDO) (3) 2.2MHz 20-TSSOP-EP
IC REG QUAD BUCK/LINEAR 20TSSOP
| Allegro MicroSystems Inc. | Win Source Electronics | Rochester Electronics | DigiKey | ODG (Origin Data Global) | ERSAELECTRONICS PTE. LTD. | Shenzhen Shengyu Electronics Technology Limited | Quarktwin Technology Ltd. | Lingto Electronic Limited | |
|---|---|---|---|---|---|---|---|---|---|
| Product Category | IC Linear Voltage Regulators | IC Voltage Regulators | IC Switching Voltage Regulators | IC Linear Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Switching Voltage Regulators | IC Linear Voltage Regulators | IC Linear Voltage Regulators |
| Product Number | A4405KLPTR-T | 168634-A4405KLPTR-T | A4405KLPTR-T | 620-A4405KLPTR-TDKR-ND | A4405KLPTR-T | 776-A4405KLPTR-T | A4405KLPTR-T | A4405KLPTR-T | A4405KLPTR-T |
| Product Name | Automotive Triple Output Regulator | Integrated Circuits(ICs) | Voltage Regulators - Linear + Switching | Voltage Regulators - Linear + Switching | Voltage Regulator IC | Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - Linear + Switching | Voltage Regulators - Linear + Switching | PMIC - Voltage Regulators - Linear + Switching | |
| Package Type | Other; 20-Pin TSSOP | SSOP; Other; TSSOP20 | Other; "20-TSSOP (0.173"", 4.40mm Width) Exposed Pad" | Other; 20-TSSOP (0.173", 4.40mm Width) Exposed Pad | Other; TSSOP | SSOP | SSOP; Other; 20-TSSOP (0.173\", 4.40mm Width) Exposed Pad | ||
| Life Cycle Stage | Active | Active | Active | Active | |||||
| Regulator Type | Standard; Low Dropout | ||||||||
| Output Voltage | 5.45 volts | ||||||||
| IOUT | 2.5 amps |
