RT9187 RICHTEK [Richtek Technology Corporation], RT9187 Datasheet
RT9187
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RT9187 Summary of contents
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... RT9187 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in hand-held wireless devices. The RT9187 consumes less than 0.1μA in shutdown mode and has fast turn-on time less than 40μs. The other features include ultra-low dropout voltage, high output accuracy, current limiting protection, and high ripple rejection ratio ...
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... Common Ground Internal Connection. Enable Input Logic, Active High. When the EN goes to a logic low, the EN device is in shutdown mode Internal Connection. VIN VOUT C IN 2.2uF RT9187 ADJ EN GND Figure 2. Adjustable Operation 0 OUT R maintain regulation. Pin Function ...
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... Function Block Diagram VIN EN VIN EN BP DS9187-08 August 2007 EN OTP POR BIAS - V + REF Current Limit Quick start Adjustable EN OTP POR BIAS - + V REF Current Limit Quick start Fixed RT9187 VOUT ADJ GND VOUT GND www.richtek.com 3 ...
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... RT9187 Absolute Maximum Ratings Supply Input Voltage -------------------------------------------------------------------------------------------------- 6V EN Input Voltage ------------------------------------------------------------------------------------------------------- 6V Power Dissipation 25° VDFN-8L 3x3 ----------------------------------------------------------------------------------------------------------- 0.923W Package Thermal Resistance (Note 9) VDFN-8L 3x3, θ ----------------------------------------------------------------------------------------------------- 8.2°C/W JC VDFN-8L 3x3, θ ------------------------------------------------------------------------------------------------------ 108°C/W JA Lead Temperature (Soldering, 10 sec.) --------------------------------------------------------------------------- 260°C Junction Temperature ------------------------------------------------------------------------------------------------- Storage Temperature Range ---------------------------------------------------------------------------------------- ...
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... R Start_Up LOAD T SD Δ REF = ADJ ADJ REF -V , which is measured when V IN OUT ≤ 85°C is assured by design. = 25° low effective thermal conductivity test board of A RT9187 Min Typ -- -- ≤ 0.1μ 170 -- 30 0.784 0 100mV. OUT OUT(NORMAL www ...
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... RT9187 Typical Operating Characteristics (C = 2.2μF/x5R 10nF, unless otherwise specified ) OUT BP Quiescent Current vs. Temperature 500 V = 3.3V IN 400 300 200 100 0 -40 -50 - Temperature Dropout Voltage vs. Load Current 300 V = 2.8V OUT 250 200 T = 25°C J 150 T = 125°C J 100 50 0 0.0 0.2 0.4 Load Current (A) ...
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... Line Transient Regulation V = 3.3V to 4.3V 800mA IN LOAD 4.3 3 -10 Time (500us/Div) Load Transient Regulation V = 3.3V 50mA to 800mA IN LOAD 1 0 (1A/Div (50mV/Div) -50 Time (100us/Div) Region of Stable C ESR vs. Load Current OUT 100 V = 3.3V Unstable Range 6.0V IN Stable Range 1 0.1 0.01 Simulation Verify 0.001 0 0.2 0.4 0.6 Load Current (A) RT9187 0.8 1 www.richtek.com 7 ...
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... RT9187 Outline Dimension Symbol Richtek Technology Corporation Headquarter 5F, No. 20, Taiyuen Street, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5526789 Fax: (8863)5526611 www.richtek.com SEE DETAIL Note : The configuration of the Pin #1 identifier is optional, but must be located within the zone indicated. ...