LM27403是TI公司的一款控制器（外部开关）产品，LM27403是具有温度补偿 DCR 电流感应的高性能同步降压控制器，本页介绍了LM27403的产品说明、应用、特性等，并给出了与LM27403相关的TI元器件型号供参考。
LM27403 - 具有温度补偿 DCR 电流感应的高性能同步降压控制器 - 控制器（外部开关） - DC/DC开关稳压器 - TI公司（Texas Instruments，德州仪器）
- Up to 97% Efficiency and 93% Duty Cycle
- Wide Input Voltage Range of 3 V to 20 V
- Switching Frequency From 200 kHz to 1.2 MHz
- Inductor-DCR-Based Overcurrent Protection With Thermal Compensation
- 0.6-V Reference With 1% Feedback Accuracy
- 30-ns Min On-Time for Low VOUT
- Integrated High-Current MOSFET Drivers
- Adaptive Deadtime Control
- Ultrafast Line and Load Transient Response
- High GBW Error Amplifier
- PWM Line Feedforward
- Integrated VDD Bias Supply LDO Subregulator
- Programmable System-Level OTP
- Precision Enable With Hysteresis
- Frequency Synchronization
- Monotonic Prebiased Start-up
- Programmable Soft-Start With Tracking
- Output Remote Sense
- Open-Drain Power Good Indicator
- 4-mm x 4-mm WQFN-24 PowerPAD™ Package
- DC-DC Converters and POL Modules
- Telecommunications Infrastructure
- Embedded Computing, Servers, Storage
The LM27403 is a feature-rich, easy-to-use, synchronous buck controller offering exceptional levels of integration and performance for superior efficiency in high power density, point-of-load (POL) DC-DC regulator solutions. The resistor-programmable switching frequency from 200 kHz to 1.2 MHz and integrated, high-current MOSFET gate drivers with adaptive deadtime offer flexibility to optimize solution size and maximize conversion efficiency.
High precision and low output voltage are easily obtained with a 0.6-V, 1% accurate voltage reference together with a 30-ns high-side MOSFET minimum controllable on-time. Using lossless inductor dc resistance (DCR) current sensing and an inexpensive 2N3904 BJT to sense temperature remotely at the inductor, the LM27403 supports accurate and thermally compensated overcurrent protection (OCP).
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| LM27403 | WQFN (24) | 4.00 mm x 4.00 mm |
