Analog Devices DC207A-B/C LTC1148 High Efficiency Step-Down Regulator Demo Manual
User guide for DC207A-B/C demo boards featuring LTC1148 controllers for high-efficiency 3.3V and 5V step-down conversion with Burst Mode operation.
Overview
This design document provides technical specifications and operating instructions for the DC207A-B and DC207A-C demonstration circuits. These circuits are built around the LTC1148 high-efficiency synchronous step-down switching regulator controller. The DC207A-B is designed for a fixed 3.3V output, while the DC207A-C provides a 5V output. Both designs utilize N-channel MOSFETs for synchronous rectification and feature Burst Mode operation to maintain high efficiency during light load conditions. The document includes typical performance characteristics, application information, and guidance for evaluating the LTC1148 in power management designs.
Use Cases
- Mobile computing power supplies
- Battery-operated electronic equipment
- Distributed power systems
- Telecommunications hardware
- High-efficiency industrial power converters
Topics
Referenced Parts
Si9410DY
Vishay Siliconix
Q1, Q2 Siliconix Si9410DY N-channel MOSFET
LR2010-01-R050-J
IRC
R1 0.05 Ohm 1/2W IRC LR2010-01-R050-J RSENSE
LPT4545-500LA
Vishay Dale
L1 50uH Dale LPT4545-500LA inductor
| LTC1148CS-3.3 | Analog Devices | U1 LTC1148CS-3.3 (B version) |
| LTC1148CS-5 | Analog Devices | U1 LTC1148CS-5 (C version) |
| TPSE107M016R0100 | AVX | C1 100uF 16V AVX TPSE107M016R0100 |
| TPSE227M010R0100 | AVX | C2 220uF 10V AVX TPSE227M010R0100 |
| MBR340 | Onsemi | D1 Motorola MBR340 Schottky diode |
| 1N5231B | Onsemi | D2 1N5231B 5.1V Zener diode |
| Si9410DY | Vishay Siliconix | Q1, Q2 Siliconix Si9410DY N-channel MOSFET |
| LR2010-01-R050-J | IRC | R1 0.05 Ohm 1/2W IRC LR2010-01-R050-J RSENSE |
| LPT4545-500LA | Vishay Dale | L1 50uH Dale LPT4545-500LA inductor |