Quick Start Guide for Demonstration Circuit 568: LTC3407 Dual Synchronous Step-Down DC/DC Regulator
Quick start guide for the DC568 demo board featuring the LTC3407 dual 600mA, 1.5MHz synchronous step-down regulator. Supports 2.5V-5.5V input with up to 96% efficiency.
Overview
Demonstration circuit 568 is a dual-channel synchronous step-down DC/DC regulator evaluation board featuring the LTC3407. It supports an input voltage range from 2.5V to 5.5V and provides up to 600mA of output current per channel. The regulator operates at a fixed 1.5MHz switching frequency, facilitating the use of small, low-profile surface-mount components. The design allows users to select between Burst Mode operation for high efficiency at light loads (40uA quiescent current) and Pulse Skip mode for minimized output ripple. The documentation includes performance specifications, setup procedures for evaluation, a complete schematic, and a detailed bill of materials featuring parts from manufacturers such as Taiyo Yuden, AVX, and AAC.
Use Cases
- Battery-powered handheld devices
- Portable electronics
- Dual rail voltage regulation
- High-efficiency light-load power management
Topics
Referenced Parts
2202S-06G1
Comm Con
HEADER, 3X2 2mm COMM CON 2202S-06G1
2802S-03-G1
Comm Con
HEADER, 3P 2mm COMM CON 2802S-03-G1
LTC3407EMS
Linear Technology
IC, LTC3407EMS LINEAR TECH. LTC3407EMS
2501-2
Mill-Max
TURRETS MILL-MAX 2501-2
JMK212BJ106MG
Taiyo Yuden
CAP, X5R 10uF 6.3V 20% 0805 TAIYO YUDEN JMK212BJ106MG
LQLBC25182R2M
Taiyo Yuden
IND, 2.2uH TAIYO YUDEN LQLBC25182R2M
JMK212BJ106MG
Taiyo Yuden
1 3 COUT1,COUT2,CIN CAP, X5R 10uF 6.3V 20% 0805 TAIYO YUDEN JMK212BJ106MG
LQLBC25182R2M
Taiyo Yuden
8 2 L1,L2 IND, 2.2uH TAIYO YUDEN LQLBC25182R2M
2.2uH
Taiyo Yuden
8 2 L1,L2 IND, 2.2uH TAIYO YUDEN LQLBC25182R2M
| CR05-1003FM | AAC | RES, 100K OHMS 1% 1/16W 0402 AAC CR05-1003FM |
| CR05-2803FM | AAC | RES, 280K OHMS 1% 1/16W 0402 AAC CR05-2803FM |
| CR05-3013FM | AAC | RES, 301K OHMS 1% 1/16W 0402 AAC CR05-3013FM |
| CR05-4023FM | AAC | RES, 402K OHMS 1% 1/16W 0402 AAC CR05-4023FM |
| CR05-475JM | AAC | RES, 4.7M OHMS 5% 1/16W 0402 AAC CR05-475JM |
| CR05-6043FM | AAC | RES, 604K OHMS 1% 1/16W 0402 AAC CR05-6043FM |
| CR05-8873FM | AAC | RES, 887K OHMS 1% 1/16W 0402 AAC CR05-8873FM |
| 04025A100KAT | AVX | CAP, NPO 10pF 50V 10% 0402 AVX 04025A100KAT |
| TAJW476M010R | AVX | CAP, TANT 47uF 10V 20% 6032 AVX TAJW476M010R |
| 04025A100KAT | AVX | 2 2 C2,C1 CAP, NPO 10pF 50V 10% 0402 AVX 04025A100KAT |
| TAJW476M010R | AVX | 4 1 C5 CAP, TANT 47uF 10V 20% 6032 AVX TAJW476M010R |
| 2202S-06G1 | Comm Con | HEADER, 3X2 2mm COMM CON 2202S-06G1 |
| 2802S-03-G1 | Comm Con | HEADER, 3P 2mm COMM CON 2802S-03-G1 |
| LTC3407EMS | Linear Technology | IC, LTC3407EMS LINEAR TECH. LTC3407EMS |
| 2501-2 | Mill-Max | TURRETS MILL-MAX 2501-2 |
| JMK212BJ106MG | Taiyo Yuden | CAP, X5R 10uF 6.3V 20% 0805 TAIYO YUDEN JMK212BJ106MG |
| LQLBC25182R2M | Taiyo Yuden | IND, 2.2uH TAIYO YUDEN LQLBC25182R2M |
| JMK212BJ106MG | Taiyo Yuden | 1 3 COUT1,COUT2,CIN CAP, X5R 10uF 6.3V 20% 0805 TAIYO YUDEN JMK212BJ106MG |
| LQLBC25182R2M | Taiyo Yuden | 8 2 L1,L2 IND, 2.2uH TAIYO YUDEN LQLBC25182R2M |
| 2.2uH | Taiyo Yuden | 8 2 L1,L2 IND, 2.2uH TAIYO YUDEN LQLBC25182R2M |