LTC3521EFE#PBF
IC REG BUCK BST ADJ TRPL 20TSSOP
Pmic Voltage Regulators Dc Dc Switching Regulators
20-TSSOP (0.173", 4.40mm Width) Exposed Pad
Active
$9.26 / unit (market reference)
MOQ: 1 pcs
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Parameters
| Parameter | Value |
|---|---|
| Brand | Analog Devices Inc. |
| Model | LTC3521EFE#PBF |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) Exposed Pad |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Topology | Buck, Buck-Boost |
| Voltage - Input (Min) | 1.8V |
| Voltage - Input (Max) | 5.5V |
| Voltage - Output | 0.6V |
| Current - Output | 600mA, 1A |
| Frequency - Switching | 1.1MHz |
| Number of Outputs | 3 |
| Supplier Device Package | 20-TSSOP-EP |
| RoHS | RoHS |
| Part Status | Active |
Application & Notes
LTC3521EFE#PBF by Analog Devices Inc. is a Buck, Buck-Boost IC commonly used in power supply designs, battery-powered devices, and DC-DC conversion modules. Input voltage up to 5.5V, output 0.6V. 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
| Function | Step-Down, Step-Up/Step-Down |
| Topology | Buck, Buck-Boost |
| Output Type | Adjustable |
| Current - Output | 600mA, 1A |
| Number of Outputs | 3 |
| Output Configuration | Positive |
| Frequency - Switching | 1.1MHz |
| Synchronous Rectifier | Yes |
| Voltage - Input (Max) | 5.5V |
| Voltage - Input (Min) | 1.8V |
| Voltage - Output (Max) | 5.5V |
| Voltage - Output (Min/Fixed) | 0.6V |
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