3A, Ultra-Low Dropout Voltage Regulator - Richtek

1 RT9059 DS9059-12 November Copyright 2020 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology and Marking InformationGeneral DescriptionThe RT9059 is a high performance positive Voltage regulatordesigned for use in applications requiring very low inputvoltage and very low Dropout Voltage at up to 3A. It operateswith a VIN as low as 1V and VDD Voltage 3V withprogrammable output Voltage as low as The RT9059features ultra low Dropout , ideal for applications whereVOUT is very close to VIN. Additionally, it has an enablepin to further reduce power dissipation while RT9059 provides excellent regulation over variationsin line, load and temperature. The RT9059 provides a powergood signal to indicate if the Voltage level of VO reaches90% of its rating Output Current up to 3A high Accuracy ADJ Voltage Dropout Voltage 350mV @ 3A Typically VOUT Power Good Signal VOUT Pull Low Resistance when Disable Current Limiting Protection Thermal Shutdown Protection RoHS Compliant and Halogen FreeApplications Notebook PC Applications Motherboard ApplicationsPin Configuration(TOP VIEW)SOP-8 (Exposed Pad)Note : Richtek products are : RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020.

2 Suitable for use in SnPb or Pb-free soldering , Ultra-Low Dropout Voltage RegulatorWDFN-10L 3x3 VOUTVOUTPGOODADJ/NCVDDVINVINENVINVOUT987 12345106 GND11 Version (Adjustable Output Fixed Output Voltage Code) Product Code Lead Plating System Package WDFN-10L 3x3 (W-Type) SOP-8 (Exposed Pad-Option 1) RT9059 GQW 0Q= G : Green ( Halogen Free and Pb Free) V RT9059-15 GQW 1E= V RT9059-18 GQW 18= V RT9059-25 GQW 8F= V RT9059 GSP RT9059 GSP V RT9059-15 GSP RT905915 GSP V RT9059-18 GSP RT905918 GSP V RT9059-25 GSP RT905925 GSP V RT90592DS9059-12 November Copyright 2020 Richtek Technology Corporation.

3 All rights reserved. is a registered trademark of Richtek Technology Corporation. Pin No. Pin Name Pin Function SOP-8 (Exposed Pad) WDFN-10L 3x3 Adjustable Output Voltage Fixed Output Voltage Adjustable Output Voltage Fixed Output Voltage 1 1 5 5 PGOOD Power good open drain output. 2 2 6 6 EN Enable control input. 3 3 7, 8. 9 7, 8. 9 VIN Supply input Voltage . 4 4 10 10 VDD Supply Voltage of control circuit. 5 5, 7 -- 4 NC No internal connection. 6 6 1, 2, 3 1, 2, 3 VOUT Output Voltage . 7 -- 4 -- ADJ Output Voltage setting. VOUT = VREF x (R1+R2)/R2. 8, 9 (Exposed Pad) 8, 9 (Exposed Pad) 11 (Exposed Pad) 11 (Exposed Pad) GND Ground.

4 The exposed pad must be soldered to a large PCB and connected to GND for maximum power dissipation. Functional Pin DescriptionTypical Application CircuitVOUT = x (R1+R2)/R2 Figure 1. Adjustable Voltage RegulatorFigure 2. Fixed Voltage RegulatorENADJVOUTRT9059 GNDVDDVDDR1R2 Chip Enable VINVIN10 FPGOOD1V to to FCVDDCOUT10 FRPGOODENVOUTRT9059 GNDVDDVDDChip Enable VINVIN10 FPGOOD1V to to FCVDDCOUT10 FRPGOOD3DS9059-12 November Copyright 2020 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Block DiagramOCPUVLOENVREFMOS DriverThermal Protection+-DELAY+-ADJENVDDVINVOUTPGOODG NDRSENSESoft-StartEAVOUTPGOOD Comparator150 RT90594DS9059-12 November Copyright 2020 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Characteristics(VDD = 5V, CIN = COUT = 10 F, CVDD = 1 F, TA = 25 C, unless otherwise specified)Parameter Symbol Test Conditions Min Typ Max Unit VDD Operation Range VDD 3 - - V VDD POR Threshold VPOR_VDD VDD rising 3 V VDD POR Falling Hysteresis VPOR_VDD VDD falling - - V Input Voltage Range VIN 1 - - V VIN POR Threshold VPOR_VIN VIN rising 0.

5 8 V VIN POR Falling Hysteresis VPOR_VIN VIN falling 0 . 2 V Quiescent Current IQ EN on, no load - - mA Absolute Maximum Ratings (Note 1) Supply Input Voltage , VIN to GNDDC ---------------------------------------- ---------------------------------------- ---------------------------------------- ----- to 6V< 10ms------------------------------------ ---------------------------------------- ---------------------------------------- --- to 7V Control Voltage , VDD to GNDDC ---------------------------------------- ---------------------------------------- ---------------------------------------- ----- to 6V< 10ms------------------------------------ ---------------------------------------- ---------------------------------------- --- to 7V Output Voltage , VOUT------------------------------------ ---------------------------------------- ----------------------- to 6V Chip Enable Voltage , EN ---------------------------------------- ---------------------------------------- ---------------- to 6V Adjust Voltage .

6 ADJ ---------------------------------------- ---------------------------------------- ---------------------- to 6V Power Good Voltage , VPGOOD---------------------------------- ---------------------------------------- ---------------- to 6V Power Dissipation, PD @ TA = 25 CSOP-8 (Exposed Pad) Package Thermal Resistance (Note 2)SOP-8 (Exposed Pad), C/WSOP-8 (Exposed Pad), JC-------------------------------------- ---------------------------------------- --------------- C/WWDFN-10L 3x3, C/WWDFN-10L 3x3, JC-------------------------------------- ---------------------------------------- ------------------------- C/W Junction Temperature----------------------------- ---------------------------------------- -------------------------------- 150 C Lead Temperature (Soldering, 10 sec.) ---------------------------------------- --------------------------------------- 260 C Storage Temperature Range----------------------------------- ---------------------------------------- ----------------- 65 C to 150 C ESD Susceptibility (Note 3)HBM (Human Body Model)---------------------------------- ---------------------------------------- -------------------- 2kVMM (Machine Model)---------------------------------- ---------------------------------------- ---------------------------200 VRecommended Operating Conditions (Note 4) Supply Input Voltage , VIN------------------------------------- ---------------------------------------- ------------------ 1V to Control Voltage , VDD (VDD > VOUT + )

7 ---------------------------------------- ---------------------------------- 3V to Junction Temperature Range----------------------------------- ---------------------------------------- ----------------- 40 C to 125 C Ambient Temperature Range----------------------------------- ---------------------------------------- ----------------- 40 C to 85 C5DS9059-12 November Copyright 2020 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Symbol Test Conditions Min Typ Max Unit Reference Voltage VREF V Fixed Output Voltage Accuracy -- % VOUT Load Regulation VLOAD IOUT = 1mA to 3A, VIN = VOUT + 1V -- 1 % OUT Line Regulation VLINE VDD = to , VIN = VOUT + 1V to 5V.

8 IOUT = 1mA -- % Dropout Voltage VDROP IOUT = 2A -- 250 350 mV IOUT = 3A -- 350 450 Current Limit ILIM VIN = A Short Circuit Current ISC VOUT < 1 A VOUT Pull Low Resistance RPULL VEN = 0V -- 150 -- Thermal Shutdown Temperature TSD -- 160 -- C Thermal Shutdown Recovery Temperature TSDR -- 90 -- C PGOOD Rising Threshold VTH_PGOOD VOUT rising -- 90 -- % PGOOD Hysteresis VTH_PGOOD VOUT falling -- 10 -- % PGOOD Delay Time 1 ms PGOOD Sink Capability VPGOOD ISINK = 10mA -- V EN Input Voltage Logic- high VIH -- -- V Logic-Low VIL -- -- EN Delay Time ms EN Pin Bias Current IEN VEN = 5V -- 12 -- A VDD Pin Shutdown Current ISHDN_VDD VEN = 0V -- -- 1 A VIN Pin Shutdown Current ISHDN_VIN VEN = 0V, VIN = 5V -- -- 1 A Inrush Current IINRUSH VOUT = , COUT = 10 F, ILOAD = 1A -- -- A Soft-Start Time tSS ms Note 1.

9 Stresses beyond those listed Absolute Maximum Ratings may cause permanent damage to the device. These arestress ratings only, and functional operation of the device at these or any other conditions beyond those indicated inthe operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions mayaffect device 2. JA is measured at TA = 25 C on a high effective thermal conductivity four-layer test board per JEDEC 51-7. JC ismeasured at the exposed pad of the 3. Devices are ESD sensitive. Handling precaution 4. The device is not guaranteed to function outside its operating November Copyright 2020 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Operating CharacteristicsQuiescent Current vs.

10 ( C)Quiescent Current (mA)VDD = 5V, VIN = 3 VEN Threshold Voltage vs. ( C)EN Voltage (V)RisingFallingCurrent Limit vs. ( C)Current Limit (A)VDD = 5V, VIN = 3 VVREF Voltage vs. ( C)VREF Voltage (V)VDD = 5V, VIN = 3 VPGOOD Delay Time vs. Temperature0100200300400500600700800900- 50-250255075100125 Temperature ( C)PGOOD Delay Time ( s)VDD = 5V, VIN = 2 VDropout Voltage vs. Temperature100150200250300350400450500-5 0-250255075100125 Temperature ( C) Dropout Voltage (mV)VOUT = , VDD = 5V, IOUT = 3A7DS9059-12 November Copyright 2020 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology POR Threshold Voltage vs. ( C)VDD Voltage (V)RisingFallingTime (200 s/Div)VDD Line Transient ResponseVOUT(20mV/Div)VDD(1V/Div)VIN = 2V, COUT = 10 FTime (200 s/Div)VIN Line Transient ResponseVOUT(20mV/Div)VIN(1V/Div)VDD = 5V, COUT = 10 FTime (1ms/Div)VIN = , VDD = 5 VVOUT = , COUT = 10 FLoad Transient ResponseIOUT(1A/Div)VOUT(20mV/Div)PSRR vs.