Clean power distribution for low-voltage microcontroller (MCU) cores
100pcs/lot RT9193-18GB DC=E2H DC= SOT23-5 100% New original - AliExpress 44
F ceramic capacitor directly adjacent to Pin 1 to mitigate inductive line kicks. Place a 1.0 dc e2h datasheet
Chip Enable (Active High). Driving this pin below 0.4V places the LDO into a zero-current shutdown state. Tying it above 1.4V enables regular 1.8V regulation. Do not leave this pin floating.
is built using an optimization path that prioritizes fast transient response, exceptionally low noise output, and minimal standby current consumption. Specifications & Rated Values RT9193-18GB / DC=E2H Output Voltage ( VOUTcap V sub cap O cap U cap T end-sub ) 1.8V Fixed Output Maximum Output Current ( IOUTcap I sub cap O cap U cap T end-sub ) 300mA continuous Input Voltage Range ( VINcap V sub cap I cap N end-sub ) 2.5V to 5.5V Dropout Voltage ( VDROPcap V sub cap D cap R cap O cap P end-sub ) 220mV typical at 300mA load Quiescent Current ( IQcap I sub cap Q ) 90µA (typical operational state) Shutdown Current ( ISHDNcap I sub cap S cap H cap D cap N end-sub ) < 0.01µA (typical standby state) PSRR (Power Supply Rejection Ratio) 70dB at 100Hz / 50dB at 10kHz Package Type SOT-23-5 (Small Outline Transistor) Pinout Configuration and Functionality Tying it above 1
While the DC-E2H is highly efficient, thermal management cannot be ignored. The datasheet recommends:
Typically > 85%, reducing power loss and heat generation. Specifications & Rated Values RT9193-18GB / DC=E2H Output
) reads above 1.5V, yet Pin 5 outputs 0V without getting boiling hot, the DC=E2H internal pass-transistor loop is likely blown and the IC must be replaced. Share public link
It is widely deployed in noise-sensitive, space-constrained environments such as RF modules, handheld medical instruments, cellular devices, and battery-powered IoT hardware. 1. Device Overview & Pinout