RT9727A RICHTEK [Richtek Technology Corporation], RT9727A Datasheet
RT9727A
Related parts for RT9727A
RT9727A Summary of contents
Page 1
... General Description The RT9727A is a load switch controller to control the external N-MOSFET load switch. The input voltage range of the RT9727A is from 6V to 25V. The RT9727A adopts the constant power discharge method to discharge the residual storages. Besides, the RT9727A also provides enable control function and over temperature protection function ...
Page 2
... RT9727A Function Block Diagram Functional Pin Description Pin No. Pin Name 1 VCC Power Supply Input. 2 GND Ground Current Source Output. There is an internal 10μA current source from VCC to CT. 4 DC1 Discharge Path when EN Pulls Low. 5 DC2 Discharge Path when EN Pulls Low. ...
Page 3
... CTsr Low 0.5V CTsk EN = Low, DCx = Low, DCx = 3.3V DCx EN = Low, DCx = 1.6V t SHDN t SHDN_hys V Rising IH V Falling IL RT9727A − 0.3V to 28V − 0. − 65°C to 150°C − 40°C to 125°C − 40°C to 85°C Min Typ Max Unit μ μA ...
Page 4
... RT9727A Note 1. Stresses listed as the above "Absolute Maximum Ratings" may cause permanent damage to the device. These are for stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may remain possibility to affect device reliability. Note 2. θ ...
Page 5
... 25V 100 125 RT9727A Shutdown Current vs. Input Voltage Input Voltage (V) Shutdown Current vs. Temperature -50 - Temperature (°C) CT Sink Current vs ...
Page 6
... RT9727A CT Source Current vs. Temperature 25V -50 - Temperature (°C) Discharge Current vs. Temperature -50 - Temperature (°C) Discharge Current vs. System Residual Voltage 0.0 0.5 1.0 1.5 2.0 System Residual Voltage (V) www.richtek.com ...
Page 7
... Applications Information The RT9727A is a load switch with wide input voltage range from 6V to 25V. It provides two paths for discharging the residual voltage when system shutdown. Besides, the external MOSFET switch On/Off can be controlled by an internal current source from the CT pin to the gate of the MOSFET switch ...
Page 8
... RT9727A Layout Consideration For best performance of the RT9727A, the following guidelines must be followed : Input capacitor should be placed close to the IC and connected to ground plane to reduce noise coupling. Keep the main current traces as short and wide as possible. The input capacitor should be placed as close as possible to the IC. ...
Page 9
... SC-70-6 Surface Mount Package Richtek Technology Corporation Taipei Office (Marketing) 5F, No. 95, Minchiuan Road, Hsintien City Taipei County, Taiwan, R.O.C. Tel: (8862)86672399 Fax: (8862)86672377 Email: marketing@richtek.com RT9727A H L Dimensions In Inches Min Max 0.031 0.044 0.000 0.004 0.045 0.054 0.006 ...