LTC3736-1 Dual 2-Phase, No Rsense, Synchronous Controller with Spread Spectrum
The LTC®3736-1 is a 2-phase dual synchronous stepdown switching regulator controller with tracking that drives external complementary power MOSFETs using few external components. The constant frequency current mode architecture with MOSFET VDS sensing eliminates the need for sense resistors and improves efficiency. Power loss and noise due to the ESR of the input capacitance are minimized by operating the two controllers out of phase.
A unique spread spectrum architecture randomly varies the LTC3736-1’s switching frequency from 450kHz to 580kHz, significantly reducing the peak radiated and conducted noise on both the input and output supplies, making it easier to comply with electromagnetic interference (EMI) standards.
Pulse skipping operation provides high efficiency at light loads. 100% duty cycle capability provides low dropout operation, extending operating time in battery-powered systems. The high switching frequencies allow for the use of small surface mount inductors and capacitors.
The LTC3736-1 is available in the low profile (0.75mm) 24-pin thermally enhanced (4mm × 4mm) QFN package and 24-lead narrow SSOP packages.
No RSENSE is a trademark of linear Technology Corporation. Protected by U.S. Patents including 5481178, 5929620, 6144194, 6580258, 6304066, 6611131, 6498466
产品特点 Features
|
应用
典型应用图
参数 |
LTC3736-1 订购信息和价格参考Package Variations and Pricing
| 器件型号 | 封装 | 引脚 | 温度 | 价格 (以 1 ~ 99 片为批量) | 价格 (以 1000 片为批量) * |
| LTC3736EGN | SSOP | 24 | E | $5.45 | $3.80 |
| LTC3736EGN#PBF | SSOP | 24 | E | $5.45 | $3.80 |
| LTC3736EGN#TR | SSOP | 24 | E | $3.86 | |
| LTC3736EGN#TRPBF | SSOP | 24 | E | $3.86 | |
| LTC3736EGN-1 | SSOP | 24 | E | $6.25 | $4.40 |
| LTC3736EGN-1#PBF | SSOP | 24 | E | $6.25 | $4.40 |
| LTC3736EGN-1#TR | SSOP | 24 | E | $4.50 | |
| LTC3736EGN-1#TRPBF | SSOP | 24 | E | $4.50 | |
| LTC3736EGN-2 | SSOP | 24 | E | $5.45 | $3.80 |
| LTC3736EGN-2#PBF | SSOP | 24 | E | $5.45 | $3.80 |
| LTC3736EGN-2#TR | SSOP | 24 | E | $3.86 | |
| LTC3736EGN-2#TRPBF | SSOP | 24 | E | $3.86 | |
| LTC3736EUF | QFN | 24 | E | $5.63 | $3.90 |
| LTC3736EUF#PBF | QFN | 24 | E | $5.63 | $3.90 |
| LTC3736EUF#TR | QFN | 24 | E | $4.00 | |
| LTC3736EUF#TRPBF | QFN | 24 | E | $4.00 | |
| LTC3736EUF-1 | QFN | 24 | E | $6.43 | $4.50 |
| LTC3736EUF-1#PBF | QFN | 24 | E | $6.43 | $4.50 |
| LTC3736EUF-1#TR | QFN | 24 | E | $4.60 | |
| LTC3736EUF-1#TRPBF | QFN | 24 | E | $4.60 | |
| LTC3736EUF-2 | QFN | 24 | E | $5.63 | $3.90 |
| LTC3736EUF-2#PBF | QFN | 24 | E | $5.63 | $3.90 |
| LTC3736EUF-2#TR | QFN | 24 | E | $4.00 | |
| LTC3736EUF-2#TRPBF | QFN | 24 | E | $4.00 |
LTC3736-1 数据手册及相关资料下载
- 数据手册(英文) : LTC3736-1: Dual 2-Phase, No RSENSE Synchronous Controller with Spread Spectrum.PDF
- 可靠性数据 : R421 Reliability Data .PDF
