LMZ21700 微型模块是易于使用的降压直流/直流解决方案,可在空间受限的应用中驱动高达 650mA 的 负载。仅需一个输入电容器、一个输出电容器、一个软启动电容器和两个电阻器即可完成基本操作。
典型应用快速 链接:VOUT = 1.2 V、VOUT = 1.8 V、VOUT = 2.5 V、VOUT = 3.3 V、VOUT = 5.0 V
器件型号 | 封装 | 封装尺寸(标称值) |
---|---|---|
LMZ21700 | µSIP (8) | 3.50mm x 3.50mm |
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Changes from C Revision (November 2014) to D Revision
Changes from B Revision (October 2014) to C Revision
Changes from A Revision (October 2013) to B Revision
Changes from * Revision (August 2012) to A Revision
PIN | I/O | DESCRIPTION | |
---|---|---|---|
NAME | NO. | ||
SS | 1 | I | Soft-start pin. An external capacitor connected to this pin sets the internal voltage reference ramp time. It can be used for tracking and sequencing. |
FB | 2 | I | Voltage feedback. Connect resistive voltage divider to this pin to set the output voltage. |
PG | 3 | O | Output power good (High = VOUT ready, Low = VOUT below nominal regulation); open drain (requires pull-up resistor; goes low impedance when EN is low) |
VOUT | 4 | O | Output Voltage. Connected to one terminal of the integrated inductor. Connect output filter capacitor between VOUT and PGND. |
GND | 5 | I | Ground for the power MOSFETs and gate-drive circuitry. |
VOS | 6 | I | Output voltage sense pin and connection for the control loop circuitry. |
EN | 7 | I | Enable input (High = enabled, Low = disabled). Internal pull down resistor keeps logic level low if pin is left floating |
VIN | 8 | I | Supply voltage for control circuitry and power stage. |
PAD | Electrically connected to GND. Must be soldered to a ground copper plane to achieve appropriate power dissipation and mechanical reliability. |