LMR36015 稳压器是一款易于使用的同步降压直流/直流转换器。该器件具有集成式高侧和低侧功率 MOSFET,能够提供高达 1.5A 的输出电流(在 4.2V 至 60V 的宽输入电压范围内)。容差高达 66V。这种瞬态容差降低了防止过压所需的设计工作量,并满足 IEC 61000-4-5 的浪涌抗扰度要求。
LMR36015 采用峰值电流模式控制机制来提供最佳的效率和输出电压精度。利用 1MHz 稳压器中的 FPWM 功能可以改善负载瞬态性能。精密使能支持直接连接到宽输入电压或对器件启动和关断进行精确控制,因此提供了灵活性。附带内置滤波和延迟功能的电源正常状态标志可提供系统状态的真实指示,免去了使用外部监控器的麻烦。
器件型号 | 封装(1) | 封装尺寸(标称值) |
---|---|---|
LMR36015 | VQFN-HR (12) | 2.00mm x 3.00mm |
VOUT = 5V | 400kHz |
Changes from Revision C (October 2019) to Revision D (September 2020)
Changes from Revision B (February 2019) to Revision C (October 2019)
Changes from Revision A (November 2018) to Revision B (February 2019)
Changes from Revision * (April 2018) to Revision A (November 2018)
LMR36015 采用 HotRod 封装,实现了低噪声、更高的效率和最小的封装裸片比率。此器件需要极少外部组件,并且具有可简化 PCB 布局的引脚排列方式。LMR36015 的小解决方案尺寸和功能集旨在简化对各种终端设备的部署,这些终端设备包括超小型现场发送器和视觉传感器等空间关键型应用。
ORDERABLE PART NUMBER | OUTPUT VOLTAGE | FPWM | fSW | PACKAGE QUANTITY |
---|---|---|---|---|
LMR36015ARNXT | Adjustable | No | 400 kHz | 250 |
LMR36015ARNXR | Adjustable | No | 400 kHz | 3000 |
LMR36015FBRNXT | Adjustable | Yes | 1 MHz | 250 |
LMR36015FBRNXR | Adjustable | Yes | 1 MHz | 3000 |
LMR36015BRNXT | Adjustable | No | 1 MHz | 250 |
LMR36015BRNXR | Adjustable | No | 1 MHz | 3000 |
NO. | NAME | TYPE | DESCRIPTION |
---|---|---|---|
1, 11 | PGND | G | Power ground terminal. Connect to system ground and AGND. Connect to CIN with short wide traces. |
2, 10 | VIN | P | Input supply to regulator. Connect to CIN with short wide traces. |
3 | NC | — | Connect the SW pin to NC on the PCB. This simplifies the connection from the CBOOT capacitor to the SW pin. This pin has no internal connection to the regulator. |
4 | BOOT | P | Bootstrap supply voltage for internal high-side driver. Connect a high-quality 100-nF capacitor from this pin to the SW pin. Connect the SW pin to NC on the PCB. This simplifies the connection from the CBOOT capacitor to the SW pin. |
5 | VCC | P | Internal 5-V LDO output. Used as supply to internal control circuits. Do not connect to external loads. Can be used as logic supply for power-good flag. Connect a high-quality 1-µF capacitor from this pin to GND. |
6 | AGND | G | Analog ground for regulator and system. Ground reference for internal references and logic. All electrical parameters are measured with respect to this pin. Connect to system ground on PCB. |
7 | FB | A | Feedback input to regulator. Connect to tap point of feedback voltage divider. Do not float. Do not ground. |
8 | PG | A | Open-drain power-good flag output. Connect to suitable voltage supply through a current limiting resistor. High = power OK, low = power bad. Goes low when EN = Low. Can be open or grounded when not used. |
9 | EN | A | Enable input to regulator. High = ON, low = OFF. Can be connected directly to VIN; Do not float. |
12 | SW | P | Regulator switch node. Connect to power inductor. Connect the SW pin to NC on the PCB. This simplifies the connection from the CBOOT capacitor to the SW pin. |
A = Analog, P = Power, G = Ground |