LTC3737 Dual 2-Phase, No RSENSETM DC/DC Controller with Output Tracking
The LTC®3737 is a 2-phase dual step-down switching regulator controller that requires few external components. The constant frequency current mode architecture provides excellent AC and DC load and line regulation. MOSFET VDS sensing eliminates the need for current 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.
Burst Mode operation provides high efficiency operation at light loads. 100% duty cycle provides low dropout operation and extends battery operating time.
Switching frequency can be programmed up to 750kHz, allowing the use of small surface mount inductors and capacitors. For noise sensitive applications, the LTC3737 can be externally synchronized from 250kHz to 850kHz.
Other features include a power good output voltage monitor, a tracking input and internal soft-start.
The LTC3737 is available in the low profile thermally enhanced (4mm × 4mm) QFN package or a 24-lead SSOP narrow package.
Protected by U.S. Patents, including 5481178, 5731694, 5929620, 6144194, 6580258, 5994885
产品特点 Features
|
应用
典型应用图
参数 |
LTC3737 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) * |
| LTC3737EGN | SSOP | 24 | E | $5.45 | $3.80 |
| LTC3737EGN#PBF | SSOP | 24 | E | $5.45 | $3.80 |
| LTC3737EGN#TR | SSOP | 24 | E | $3.86 | |
| LTC3737EGN#TRPBF | SSOP | 24 | E | $3.86 | |
| LTC3737EGN-1 | SSOP | 24 | E | $6.25 | $4.40 |
| LTC3737EGN-1#PBF | SSOP | 24 | E | $6.25 | $4.40 |
| LTC3737EGN-1#TR | SSOP | 24 | E | $4.50 | |
| LTC3737EGN-1#TRPBF | SSOP | 24 | E | $4.50 | |
| LTC3737EGN-2 | SSOP | 24 | E | $5.45 | $3.80 |
| LTC3737EGN-2#PBF | SSOP | 24 | E | $5.45 | $3.80 |
| LTC3737EGN-2#TR | SSOP | 24 | E | $3.86 | |
| LTC3737EGN-2#TRPBF | SSOP | 24 | E | $3.86 | |
| LTC3737EUF | QFN | 24 | E | $5.63 | $3.90 |
| LTC3737EUF#PBF | QFN | 24 | E | $5.63 | $3.90 |
| LTC3737EUF#TR | QFN | 24 | E | $4.00 | |
| LTC3737EUF#TRPBF | QFN | 24 | E | $4.00 | |
| LTC3737EUF-1 | QFN | 24 | E | $6.43 | $4.50 |
| LTC3737EUF-1#PBF | QFN | 24 | E | $6.43 | $4.50 |
| LTC3737EUF-1#TR | QFN | 24 | E | $4.60 | |
| LTC3737EUF-1#TRPBF | QFN | 24 | E | $4.60 | |
| LTC3737EUF-2 | QFN | 24 | E | $5.63 | $3.90 |
| LTC3737EUF-2#PBF | QFN | 24 | E | $5.63 | $3.90 |
| LTC3737EUF-2#TR | QFN | 24 | E | $4.00 | |
| LTC3737EUF-2#TRPBF | QFN | 24 | E | $4.00 |
LTC3737 数据手册及相关资料下载
- 数据手册(英文) : LTC3737 - Dual 2-Phase, No RSENSE DC/DC Controller with Output Tracking.PDF
- 可靠性数据 : R421 Reliability Data .PDF
