RT9186B

Features:

2.5V to 5.5V Wide Input Range
Guaranteed 500mAOutput Current
Low 160mV Dropout at 500mA
1.8V/2.5V/3.3V Preset Output Voltage Version with Adjustable Range from 0.8V to 4.5V.
Reset Output with 6ms (typ.) Delay Time
Power Good Output
Low 190A Ground Pin Current
0.1A Shutdown Current
Thermal and Over Current Protection
RoHS Compliant and 100%Lead (Pb)-Free


Application

NotebookComputer
PDAs/SHDs
PCMCIA/CardbusCard Product
Mobile Phone


Pinout

Specifications

Input Voltage ---------------------------------------------------------------------------------------------------------- 7V
Storage Temperature Range --------------------------------------------------------------------------------------- -65°C to 150°C
Lead Temperature (Soldering, 10 sec.) -------------------------------------------------------------------------- 260°C
PowerDissipation, PD@ T_A = 25°C
  MSOP-8------------------------------------------------------------------------------------------------------------------- 0.625W
  VDFN-8L 3x3------------------------------------------------------------------------------------------------------------- 0.952W
Package Thermal Resistance (Note 4)
  MSOP-8, _JA ------------------------------------------------------------------------------------------------------------ 160°C/W
  VDFN-8L 3x3, _JA ------------------------------------------------------------------------------------------------------ 105°C/W
Junction Temperature ----------------------------------------------------------------------------------------------- 150°C
ESD Susceptibility (Note 2)
  HBM(Human Body Mode) -------------------------------------------------------------------------------------------- 2kV
  MM(MachineMode) ---------------------------------------------------------------------------------------------------- 200V


Description

The RT9186B is a low-dropout linear regulator providing up to 500mA load current with 160mV dropout. It is especially designed for the application of portable and smart handheld device.

The RT9186B operates from 2.5V to 5.5V supply. The internal P-MOSFET pass transistor allows the regulator to workwith 190A low quiescent current. Its preset output voltage version covers themost frequently used values, including 1.8V/2.5V/3.3V. Output voltage can also be adjusted via the ADJ pin for those other than the preset values.

With only 0.1mA required in the shut down mode, one enable pin is able to control output on/off. RT9186B contains PGOODfunction. On the other hand, RT9186B contains RST function with 6ms (typ.) time delay.