MPQ2166AGRHE-AEC1-Z一级优质供应原装正品现货。
该 MPQ2166A 是一个内部补偿，双，PWM，同步，降压稳压器。它的工作电压从2.7 V 到6V 输入，产生的输出电压低至0.6 V。MPQ2166A 可以配置为2A/2A 或3A/1A 输出电流调节器，并且由于其65μA 的低静态电流，非常适合为单芯锂离子(Li +)电池上运行的便携设备供电。该装置集成了双，55mΩ，高端开关和20mΩ 同步整流器的高效率没有外部肖特基二极管。MPQ2166A 具有峰值电流模式控制和内部补偿，并能够进行低压差配置。两个通道都可以在100% 的占空比下工作。完整的保护功能包括循环电流限制和热停机。MPQ2166A 需要最少数量的容易获得的标准外部组件，并且可以在 QFN-18(2.5 mmx3.5 mm)封装中获得。功能2.7 V 至6V 工作输入范围2A/2A 或3A/1A 连续电流55mΩ/20mΩ RDS (ON)可配置频率最高可达3MHz 外部同步时钟最高可达3MHz 180 ° 移相操作电源良好(PG)指示器外部软启动(SS)和轨道模式选择先进异步模式(AAM)或强制连续传导模式(FCCM)峰值效率 > 90% 可调0.6 V 至5.5 V 输出100% 占空比操作65μA 静态电流逐周期过电流保护(OCP)短路保护(SCP) Hiccup 模式和谷电流检测热关闭可在 QFN-18(2.5 mmx3.5 mm)软件包中使用可湿性侧翼软件包可在 AEC-Q100等级1应用汽车信息娱乐汽车集群汽车信息通信电池驱动的设备便携式仪器所有 MPS 部件都是无铅、无卤的，并遵守 RoHS 指令。
Pin # Name Description
1 PG2
Power good indicator for channel 2. The output of PG2 is an open drain. Connect PG2 to
the power source using a pull-up resistor. PG2 is pulled high when VFB2 exceeds 90% of VREF;
PG is pulled low to GND if VFB2 drops below 82% of VREF.
2 PGND2
Power ground for channel 2. Connect PGND2 to the negative terminals of the input and
output capacitors with larger copper areas. PGND2 must be externally connected to PGND1
on the board.
3 SW2 Switch node connection to the inductor for channel 2. SW2 connects to the internal highand low-side power MOSFET switches of the channel 2 buck.
4 VIN2 Input supply for channel 2. To reduce voltage spikes, place a decoupling capacitor to
ground, close to VIN2.
5 SS2 Soft start for channel 2. Place a capacitor from SS2 to GND to set the soft-start time
externally. Floating this pin will activate the internal default 0.5ms soft-start setting.
6 FB2
Feedback for channel 2. FB2 is the input to channel 2’s error amplifier. An external resistive
divider connects FB2 between the output and ground. The voltage on FB2 is compared to the
internal 0.6V reference, and sets the regulation voltage on channel 2.
7 AGND Analog ground. Externally connect AGND to PGND1 and PGND2 on the board.
8 VCC
Power supply to the internal circuits. Place a 0.1µF to 1µF decoupling capacitor between
VCC and AGND. Connect VIN1, VIN2, and VCC together externally. It is not recommended
to power these pins on separate power supplies.
9 CCM AAM or FCCM control. Pull CCM high to enter forced continuous conduction mode (FCCM);
pull CCM low to enter advanced asynchronous mode (AAM) at light-load. Do not float CCM.
10 FB1
Feedback for channel 1. FB1 is the input to the error amplifier of channel 1. An external
resistive divider connects FB1 between the output and GND. The voltage on FB1 is
compared to the internal 0.6V reference to set the regulation voltage on channel 1.
11 SS1 Soft start for channel 1. Place a capacitor from SS1 to GND to set the soft-start time
externally. Floating this pin will activate the internal default 0.5ms soft-start setting.
12 VIN1 Input supply for channel 1. To reduce voltage spikes, place a decoupling capacitor to
ground, close to VIN1.
13 SW1 Switch node connection to the inductor for channel 1. SW1 connects to the internal highand low-side power MOSFET switches of the channel 1 buck.
14 PGND1
Power ground for channel 1. Connect PGND1 to the negative terminals of the input and
output capacitors with larger copper areas. PGND1 must be externally connected to PGND2
on the board.
15 PG1
Power good indicator for channel 1. The output of PG1 is an open drain. Connect PG1 to
the power source using a pull-up resistor. PG1 is pulled high when VFB1 exceeds 90% of VREF;
PG1 is pulled low to GND if VFB1 drops below 82% of VREF.
16 EN1 Enable control for channel 1. Pull EN1 below the specified threshold (0.4V) to shut down
the chip. Pull EN above the specified threshold (1.6V) to enable the chip. Do not float EN1.
17 FREQ Frequency set. Connect a resistor to GND to set the switching frequency. The switching
frequency can be synchronized by an external clock via FREQ.
18 EN2 Enable control for channel 2. Pull EN2 below the specified threshold (0.4V) to shut down
the chip. Pull EN above the specified threshold (1.6V) to enable the chip. Do not float EN2.
