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Analog Devices LTC3303A | Demoboard DC3252A
Evaluating the LTC3303A, 3.3 V to 1.2 V at 4 A, 2 MHz Synchronous Step-Down Regulator in a 2 mm × 2 mm SWF FCQFN
Overview
| Topology | Buck Converter |
| Input voltage | 2.25-5.5 V |
| Switching frequency | 1600-2400 kHz |
| Output 1 | 1.22 V / 4 A |
Description
Demonstration Circuit DC3252A features the LTC3303A, 5 V, 4 A synchronous step-down silent switcher operating as a 2 MHz, 3.3 V to 1.2 V, 4 A buck regulator. The LTC3303A supports adjustable output voltages from 0.5 V to VIN. The LTC3303A is a compact, high efficiency, and high-speed synchronous monolithic step-down switching regulator. A minimum on-time of 27 ns enables high VIN to low VOUT conversion.The DC3252A operating mode can be selected as Burst Mode operation, skip (PS) or forced continuous (FC) mode. Setting JP1 to the SKIP position allows the LTC3303A to sync to a clock frequency from 1.6 MHz to 2.4 MHz. The LTC3303A operates in forced continuous mode when syncing to an external clock.
Features
- LTC3303A evaluation board
- Transient circuit included for load-transient evaluation
- EMI filter included to reduce noise in EMI emission tests
Typical applications
- Optical Networking, Servers, Telecom, Communications
- Telecom power supplies, FPGA, ASIC, μP Core Supplies, Distributed DC Power Systems (POL)
More information
Products
Order Code | Datasheet | Downloads | Status | Product series | Z @ 100 MHz(Ω) | Zmax(Ω) | RDC(mΩ) | Pins | Type | Mount | L(mm) | H(mm) | IR(A) | Working Voltage(V (AC)) | Operating Temperature | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-MPSA EMI Multilayer Power Suppression Bead, 100 Ω, 160 Ω | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-MPSA EMI Multilayer Power Suppression Bead | Impedance @ 100 MHz100 Ω | Maximum Impedance160 Ω | DC Resistance6 mΩ | – | TypeHigh Current | MountSMT | Length4.5 mm | Height2.3 mm | Rated Current8 A | – | Operating Temperature -55 °C up to +125 °C | |||
 | WR-PHD Jumper, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Jumper | – | – | – | Pins2 | – | – | – | – | Rated Current3 A | Working Voltage200 V (AC) | Operating Temperature -25 °C up to +105 °C | |||
 | WR-PHD Pin Header, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header | – | – | – | Pins3 | TypeStraight | MountTHT | Length6 mm | – | Rated Current2 A | Working Voltage200 V (AC) | Operating Temperature -40 °C up to +105 °C | |||
 | WR-PHD Pin Header, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header | – | – | – | Pins4 | TypeStraight | MountTHT | Length8 mm | – | Rated Current2 A | Working Voltage200 V (AC) | Operating Temperature -40 °C up to +105 °C |