A4409KLPTR-T
IC REG TRPL BUCK/BST/LNR 20TSSOP
Pmic Voltage Regulators Linear Switching
20-TSSOP (0.173", 4.40mm Width) Exposed Pad
Automotive, AEC-Q100
Active
$3.99 / unit (market reference)
MOQ: 1 pcs
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Parameters
| Parameter | Value |
|---|---|
| Brand | Allegro MicroSystems |
| Model | A4409KLPTR-T |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) Exposed Pad |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 135°C |
| Topology | Step-Down (Buck) (1) or Step-Down/Step-Up (Buck/Boost) (1), Linear (LDO) (2) |
| Frequency - Switching | 400kHz ~ 2.4MHz |
| Number of Outputs | 3 |
| Supplier Device Package | 20-TSSOP-EP |
| RoHS | RoHS |
| Part Status | Active |
Application & Notes
A4409KLPTR-T by Allegro MicroSystems is a Step-Down (Buck) (1) or Step-Down/Step-Up (Buck/Boost) (1), Linear (LDO) (2) 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) or Step-Down/Step-Up (Buck/Boost) (1), Linear (LDO) (2) |
| w/Sequencer | Yes |
| w/LED Driver | No |
| w/Supervisor | No |
| Voltage - Supply | 3V ~ 36V |
| Number of Outputs | 3 |
| Frequency - Switching | 400kHz ~ 2.4MHz |
| Voltage/Current - Output 1 | 0.8V ~ 3.3V, 800mA |
| Voltage/Current - Output 2 | 6V/6.6V, 1A |
| Voltage/Current - Output 3 | 5V, 150mA |
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