A4405KLPTR-T
IC REG QUAD BUCK/LINEAR 20TSSOP
Pmic Voltage Regulators Linear Switching
20-TSSOP (0.173", 4.40mm Width) Exposed Pad
Automotive, AEC-Q100
Active
$1.80 / unit (market reference)
MOQ: 139 pcs
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Parameters
| Parameter | Value |
|---|---|
| Brand | Allegro MicroSystems |
| Model | A4405KLPTR-T |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) Exposed Pad |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 150°C (TJ) |
| Topology | Step-Down (Buck) (1), Linear (LDO) (3) |
| Frequency - Switching | 2.2MHz |
| Number of Outputs | 4 |
| Supplier Device Package | 20-TSSOP-EP |
| RoHS | RoHS |
| Part Status | Active |
Application & Notes
A4405KLPTR-T by Allegro MicroSystems is a Step-Down (Buck) (1), Linear (LDO) (3) IC commonly used in power supply designs, battery-powered devices, and DC-DC conversion modules. Input voltage up to N/A, output adjustable. The 20-TSSOP (0.173", 4.40mm Width) Exposed Pad package with surface mount mounting is standard for compact designs. Pay attention to input/output capacitor selection and PCB layout — switching regulators are sensitive to trace inductance.
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All Technical Specifications
| Topology | Step-Down (Buck) (1), Linear (LDO) (3) |
| w/Sequencer | No |
| w/LED Driver | No |
| w/Supervisor | No |
| Voltage - Supply | 5.5V ~ 36V |
| Number of Outputs | 4 |
| Frequency - Switching | 2.2MHz |
| Voltage/Current - Output 1 | 5.45V, 2.5A |
| Voltage/Current - Output 2 | 5V |
| Voltage/Current - Output 3 | 3.3V, 500mA |
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