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The A4402 is a dual-output regulator, combining in a single package a constant on-time buck regulator and a linear regulator (LDO)—each with adjustable output voltages. It is ideal for applications that require two regulated voltages, such as in microcontroller- or DSP-based applications requiring core and I/O voltage rails.
The buck regulator output supplies the adjustable linear regulator to reduce power dissipation and increase overall efficiency. The switching regulator is capable of operating above 2 MHz, allowing the use of small low value inductors and capacitors while avoiding sensitive EMI frequency bands such as AM radio in automotive applications.
Protection features include undervoltage lockout and thermal shutdown. In case of a shorted load, each regulator features overcurrent protection.
The device has an integrated power-on reset with adjustable delay to monitor LDO output voltage and provide a signal that can be used to reset a DSP or microcontroller. It also includes a watchdog circuit.
The A4402 is provided in a 16-pin TSSOP, with exposed pad for enhanced thermal dissipation. It is lead (Pb) free, with 100% matte tin leadframe plating.
IC REG DL BUCK/LNR 2MHZ 16TSSOP
PMIC - Voltage Regulators - Linear Switching 2 Output Step-Down (Buck) (1), Linear (LDO) (1) 2MHz 16-eTSSOP-EP
Manufacturer: Allegro MicroSystems, LLC
Win Source Part Number: 112150-A4402KLPTR-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 150°C
Case / Package: 16-TSSOP-EP
Purpose: Automotive
Supply Voltage - Operating: 6 V to 50 V
Popularity: Medium
Fake Threat In the Open Market: 42 pct.
Supply and Demand Status: Balance
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
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
| Allegro MicroSystems Inc. | Shenzhen Shengyu Electronics Technology Limited | Nova Technology(HK) Co.,Ltd | Win Source Electronics | Quarktwin Technology Ltd. | DigiKey | Lingto Electronic Limited | |
|---|---|---|---|---|---|---|---|
| Product Category | IC Linear Voltage Regulators | IC Switching Voltage Regulators | IC Linear Voltage Regulators | IC Linear Voltage Regulators | IC Linear Voltage Regulators | IC Linear Voltage Regulators | IC Linear Voltage Regulators |
| Product Number | A4402KLPTR-T | A4402KLPTR-T | A4402KLPTR-T | 112150-A4402KLPTR-T | A4402KLPTR-T | 620-1462-1-ND | A4402KLPTR-T |
| Product Name | Dual Output Regulator | Integrated Circuits (ICs) - Power Management (PMIC) - Voltage Regulators - Linear + Switching | PMIC - Voltage Regulators - Linear + Switching | PMIC - PMIC - Voltage Regulators - Linear + Switching - A4402KLPTR-T | Voltage Regulators - Linear + Switching | Voltage Regulators - Linear + Switching | PMIC - Voltage Regulators - Linear + Switching |
| Regulator Type | Low Dropout | Low Dropout | Standard; Low Dropout | ||||
| Output Voltage Type | Adjustable / Variable | ||||||
| Package Type | Other; 16-Pin eTSSOP | SSOP | SSOP; Other; 16-TSSOP (0.173", 4.40mm Width) Exposed Pad | SSOP; Other; 16-TSSOP-EP | SSOP; Other; 16-TSSOP (0.173\", 4.40mm Width) Exposed Pad | Other; "16-TSSOP (0.173"", 4.40mm Width) Exposed Pad" | |
| Life Cycle Stage | Active | Maturity; Active | Active | Active | |||
| VIN | 6 to 50 volts |
