Features: Stable with Low-ESR Output Capacitor
Low Dropout Voltage (220mV and 200mA)
Low Operation Current - 80A Typical
Shutdown Function
Low Noise Output
Low Temperature Coefficient
Current and Thermal Limiting
Custom Voltage Available
SOT-25 and SOP-8 PackagesApplicationCellular Telephones
Laptop, Notebook, and Palmtop Computers
Battery-powered Equipment
Hand-held EquipmentPinout
SpecificationsInput Voltage.......................................................8V
Power Dissipation, PD @ TA = 25
SOT-25..................................................................0.25W
SOP-8....................................................................0.625W
Operating Junction Temperature Range................-40 to 125
Storage Temperature Range.................................-65 to 150
Package Thermal Resistance
SOT-25, JA...........................................................250/W
SOP-8, JA.............................................................160/W
Lead Temperature (Soldering, 5 sec.)....................260
DescriptionThe RT9167A is designed as one kind of efficient precise dual-channel CMOS LDO regulator which optimized for ultra-low-quiescent applications.Both regulator outputs are capable of sourcing 500mA of output current.It is available in CD/DVD-ROM,CD/RW;wireless lAN card/keyboard/mouse;battery-powered equipment and XDSL router.
Features of the RT9167A are:(1)wide operating voltage ranges:2.8V to 5.5V;(2)ultra-fast transient response;(3)low dropout voltage:600mV at 500mA;(4)guaranteed 500mA output current;(5)low quiescent current (typically 440A);(6)tight load and line regulation;(7)current limiting protection;(8)thermal shutdown protection;(9)only low-ESR ceramic capacitors required for stability;(10)custom voltage available;(11)RoHS compliant and 100% lead (Pb)-free.
The absolute maximum ratings of the RT9167A can be summarized as:(1)supply input voltage:6.5 V;(2)power dissipation,PD @ TA=25°C SOP-8:0.625 W;(3)package thermal resistance SOP-8,JA:160°C/W;(4)lead temperature (soldering,10 sec.):260°C;(5)junction temperature:150°C;(6)storage temperature range:-65°C to 150°C;(7)ESD susceptibility HBM (human body mode):2kV;(8)ESD susceptibility MM (machine mode):200 V.And the recommended operating conditions are:(1)supply input voltage:2.8V to 5.5V;(2)junction temperature range:-40°Cto 125°C.If you want to know more information such as the electrical characteristics about the RT9167A,please download the datasheet in www.seekic.com .
The RT9167/A is a 200mA/500mA low dropout andlow noise micropower regulator suitable for portableapplications. The output voltages range from 1.5V to5.0V in 100mV increments and 2% accuracy. TheRT9167/A is designed for use with very low ESRcapacitors. The output remains stable even with 1Fceramic output capacitor.
The RT9167/A uses and internal PMOS as the passdevice, which does not cause extra GND current inheavy load and dropout conditions. The shutdownmode of nearly zero operation current makes the ICsuitable for battery-power devices. Other featuresinclude a reference bypass pin to improve low noiseperformance, current limiting, and over temperatureprotection.
RT9167A Data Sheet
