LP38690 和 LP38692 低压降互补金属氧化物半导体 (CMOS) 线性稳压器的输出容差很小(典型值为 2.5%)并且压降极低(负载电流为 1A、VOUT = 5V 时为 450mV),通过使用超低等效串联电阻 (ESR) 陶瓷输出电容提供出色的交流性能。
晶圆级小外形无引线 (WSON)、小外形尺寸晶体管 (SOT)-223 以及 TO-252 封装的热阻较低,即使在高温环境中也可实现满电流运行。
P 型金属氧化物半导体 (PMOS) 功率晶体管的使用意味着无需直流基极驱动电流对其进行偏置,因此无论负载电流、输入电压或者运行温度为何,接地引脚电流均可保持在 100μA 以下。
部件号 | 封装 | 封装尺寸(标称值) |
---|---|---|
LP38690 | TO-252 (3) | 6.58mm x 6.10mm |
WSON (6) | 3.00mm x 3.00mm | |
LP38692 | SOT-223 (5) | 6.50mm x 3.56mm |
WSON (6) | 3.00mm x 3.00mm |
Changes from L Revision (March 2015) to M Revision
Changes from K Revision (December 2014) to L Revision
Changes from J Revision (April 2013) to K Revision
Changes from I Revision (April 2013) to J Revision
PIN | TYPE | DESCRIPTION | ||||
---|---|---|---|---|---|---|
NAME | LP38690 | LP38692 | ||||
TO-252 | WSON | SOT-223 | WSON | |||
EN | — | — | 1 | 3 | I | The Enable (EN) pin allows the part to be turned ON and OFF by pulling this pin HIGH or LOW. |
GND | TAB | 2 | 5 | 2 | — | Circuit ground for the regulator. For the TO-252 and SOT-223 packages this is thermally connected to the die and functions as a heat sink when soldered down to a large copper plane. |
IN | 3 | 1, 6 | 4 | 1, 6 | I | This is the input supply voltage to the regulator. For WSON devices, both IN pins must be tied together for full current operation (500 mA maximum per pin). |
OUT | 1 | 4 | 3 | 4 | O | Regulated output voltage. |
SNS | — | 5 | — | 5 | I | WSON only - Output sense pin allows remote sensing at the load which eliminates the error in output voltage due to voltage drops caused by the resistance in the traces between the regulator and the load. This pin must be tied to VOUT. |
DAP | — | X | — | X | — | WSON only - The DAP (Exposed Pad) functions as a thermal connection when soldered to a copper plane. See WSON Mounting section in Layout for more information. |