The A4402 is a dual-output regulator integrating a 2 MHz constant on-time buck converter and a linear regulator for applications requiring two regulated voltages, such as microcontroller and DSP power systems. It is packaged in a 16-pin eTSSOP with an exposed thermal pad for enhanced heat dissipation. The E version operates from -40°C to 85°C ambient temperature and includes features such as adjustable soft start, watchdog input, power-on reset, overcurrent protection, undervoltage lockout, and thermal shutdown. The buck regulator supplies the linear regulator to improve efficiency, and both outputs are adjustable. Thermal resistance is 34 °C/W on a 4-layer PCB per JEDEC JESD51-7 standards.
The A4402 simplifies power supply design for microcontrollers and DSPs by integrating a 2 MHz buck regulator and an LDO in a single package. This dual-output regulator offers adjustable output voltages, integrated power-on reset, a watchdog timer, and overcurrent/thermal protection for robust performance.
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PMIC - Voltage Regulators - Linear + Switching 2 Output Step-Down (Buck) (1), Linear (LDO) (1) 2MHz 16-eTSSOP-EP
PMIC - Voltage Regulators - Linear + Switching 2 Output Step-Down (Buck) (1), Linear (LDO) (1) 2MHz 16-eTSSOP-EP
PMIC - Voltage Regulators - Linear + Switching 2 Output Step-Down (Buck) (1), Linear (LDO) (1) 2MHz 16-eTSSOP-EP
Switching Regulator, Current-mode, 0.35A, 2000kHz Switching Freq-Max, PDSO16, LEAD FREE, MO-153ABT, TSSOP-16 Product overview: A4402ELPTR-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 0.35A, 2000kHz, TSSOP. Search-friendly keywords include voltage regulator, LDO, buck converter, boost converter, power rail, 0.35A, 2000kHz, TSSOP, 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-A4402ELPTR-T can be used for catalog matching and distributor lookup.
Manufacturer: Allegro MicroSystems, LLC
Win Source Part Number: 007708-A4402ELPTR-T
Packaging: Reel - TR
Mounting: SMD (SMT)
Topology: Step-Down (Buck) (1), Linear (LDO) (1)
Frequency - Switching: 2MHz
Number of Outputs: 2
Voltage/Current - Output 1: 3.3 V to 5 V, 1A
Voltage/Current - Output 2: 1.8 V to 3.3 V, 250mA
w/LED Driver: No
w/Supervisor: No
w/Sequencer: No
Categories: Integrated Circuits
Status: Active
Temperature Range - Operating: -40°C to 85°C
Case / Package: 16-TSSOP-EP
Purpose: Any Function
Supply Voltage - Operating: 6 V to 50 V
Popularity: Medium
Fake Threat In the Open Market: 62 pct.
Supply and Demand Status: Balance
PMIC - Voltage Regulators - Linear Switching 2 Output Step-Down (Buck) (1), Linear (LDO) (1) 2MHz 16-eTSSOP-EP
IC REG DL BUCK/LNR 2MHZ 16TSSOP
IC REG DL BUCK/LNR 2MHZ 16TSSOP
IC REG DL BUCK/LNR 2MHZ 16TSSOP
| Allegro MicroSystems Inc. | DigiKey | ERSAELECTRONICS PTE. LTD. | Win Source Electronics | Quarktwin Technology Ltd. | Shenzhen Shengyu Electronics Technology Limited | Lingto Electronic Limited | ODG (Origin Data Global) | |
|---|---|---|---|---|---|---|---|---|
| Product Category | IC Voltage Regulators | IC Linear Voltage Regulators | IC Switching Voltage Regulators | IC Linear Voltage Regulators | IC Linear Voltage Regulators | IC Switching Voltage Regulators | IC Linear Voltage Regulators | IC Switching Voltage Regulators |
| Product Number | A4402ELPTR-T | 620-A4402ELPTR-TDKR-ND | 776-A4402ELPTR-T | 007708-A4402ELPTR-T | A4402ELPTR-T | A4402ELPTR-T | A4402ELPTR-T | A4402ELPTR-T |
| Product Name | Dual Output Regulator | Voltage Regulators - Linear + Switching | 0.35A 2000kHz TSSOP Voltage Regulator IC | PMIC - PMIC - Voltage Regulators - Linear + Switching - A4402ELPTR-T | Voltage Regulators - Linear + Switching | Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - Linear + Switching | PMIC - Voltage Regulators - Linear + Switching | Voltage Regulators - Linear + Switching |
| Output Voltage Type | Adjustable / Variable | |||||||
| Package Type | Other; 16-Pin eTSSOP | Other; "16-TSSOP (0.173"", 4.40mm Width) Exposed Pad" | Other; TSSOP | SSOP; Other; 16-TSSOP-EP | SSOP; Other; 16-TSSOP (0.173\", 4.40mm Width) Exposed Pad | SSOP | Other; 16-TSSOP (0.173", 4.40mm Width) Exposed Pad | |
| Regulator Type | Standard; Low Dropout | |||||||
| Output Voltage | 3.3 to 5 volts | |||||||
| IOUT | 1 amps | 0.2500 amps |
