RT9059GSP(Z00)

® RT9059 3A, Ultra-Low Dropout Voltage Regulator General Description Features The RT9059 is a high performance positive voltage regulator designed for use in applications requiring very low input voltage and very low dropout voltage at up to 3A. It operates with a VIN as low as 1V and VDD voltage 3V with programmable output voltage as low as 0.8V. The RT9059 features ultra low dropout, ideal for applications where VOUT is very close to VIN. Additionally, it has an enable pin to further reduce power dissipation while shutdown. The RT9059 provides excellent regulation over variations in line, load and temperature. The RT9059 provides a power good signal to indicate if the voltage level of VO reaches  Output Current up to 3A  High Accuracy ADJ Voltage 1.5% 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 Free 90% of its rating value.  Ordering Information Pin Configurations RT9059(-       Applications  Notebook PC Applications Motherboard Applications ) (TOP VIEW) Package Type SP: SOP-8 (Exposed Pad-Option 1) QW : WDFN-10L 3x3 (W-Type) Lead Plating System G : Green (Halogen Free and Pb Free) PGOOD EN 2 VIN 3 VDD 4 GND 8 GND 7 ADJ/NC 6 VOUT 5 NC 9 Note : Richtek products are :  RoHS compliant and compatible with the current require- VOUT VOUT VOUT ADJ/NC PGOOD 1 2 3 4 5 GND SOP-8 (Exposed Pad) None : Adjustable Output Fixed Output Voltage Code 15 : 1.5V 18 : 1.8V 25 : 2.5V 11 10 9 8 7 6 VDD VIN VIN VIN EN WDFN-10L 3x3 ments of IPC/JEDEC J-STD-020.  Suitable for use in SnPb or Pb-free soldering processes. Marking Information For marking information, contact our sales representative directly or through a Richtek distributor located in your area. Copyright © 2016 Richtek Technology Corporation. All rights reserved. DS9059-10 February 2016 is a registered trademark of Richtek Technology Corporation. www.richtek.com 1 RT9059 Typical Application Circuit VIN 1V to 5.5V VIN CIN 10µF VDD 3V to 5.5V RT9059 PGOOD RT9059 VIN 1V to 5.5V CIN 10µF RPGOOD CVDD 1µF VDD VDD 3V to 5.5V VOUT VOUT COUT 10µF R1 ADJ Chip Enable CVDD 1µF PGOOD VDD RPGOOD VOUT EN GND VOUT COUT 10µF Chip Enable R2 EN VIN GND VOUT = 0.8 x (R1+R2)/R2 Figure 1. Adjustable Voltage Regulator Figure 2. Fixed Voltage Regulator Functional Pin Description Pin No. SOP-8 (Exposed Pad) Adjustable Output Voltage WDFN-10L 3x3 Pin Name Pin Function Fixed Output Adjustable Fixed Output Voltage Output Voltage 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 = V REF x (R1+R2)/R2. 8, 8, 11 11 GND 9 (Exposed Pad) 9 (Exposed Pad) (Exposed Pad) (Exposed Pad) Copyright © 2016 Richtek Technology Corporation. All rights reserved. www.richtek.com 2 Ground. The exposed pad must be soldered to a large PCB and connected to GND for maximum power dissipation. is a registered trademark of Richtek Technology Corporation. DS9059-10 February 2016 RT9059 Functional Block Diagram EN VDD VIN VOUT ADJ VREF EN UVLO OCP RSENSE MOS Driver + EA - VOUT 150 Thermal Protection Soft-Start PGOOD + PGOOD Comparator Copyright © 2016 Richtek Technology Corporation. All rights reserved. DS9059-10 February 2016 DELAY GND is a registered trademark of Richtek Technology Corporation. www.richtek.com 3 RT9059 Absolute Maximum Ratings             (Note 1) Supply Input Voltage, VIN to GND DC ----------------------------------------------------------------------------------------------------------------------------< 10ms ----------------------------------------------------------------------------------------------------------------------Control Voltage, VDD to GND DC ----------------------------------------------------------------------------------------------------------------------------< 10ms ----------------------------------------------------------------------------------------------------------------------Output Voltage, VOUT --------------------------------------------------------------------------------------------------Chip Enable Voltage, EN -----------------------------------------------------------------------------------------------Adjust Voltage, ADJ -----------------------------------------------------------------------------------------------------Power Good Voltage, VPGOOD -----------------------------------------------------------------------------------------Power Dissipation, PD @ TA = 25°C SOP-8 (Exposed Pad) --------------------------------------------------------------------------------------------------WDFN-10L 3x3 ------------------------------------------------------------------------------------------------------------Package Thermal Resistance (Note 2) SOP-8 (Exposed Pad), θJA ---------------------------------------------------------------------------------------------SOP-8 (Exposed Pad), θJC --------------------------------------------------------------------------------------------WDFN-10L 3x3, θJA ------------------------------------------------------------------------------------------------------WDFN-10L 3x3, θJC ------------------------------------------------------------------------------------------------------Junction Temperature ----------------------------------------------------------------------------------------------------Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------------Storage Temperature Range -------------------------------------------------------------------------------------------ESD Susceptibility (Note 3) HBM (Human Body Model) ---------------------------------------------------------------------------------------------MM (Machine Model) ----------------------------------------------------------------------------------------------------- Recommended Operating Conditions     −0.3V to 6V −0.3V to 7V −0.3V to 6V −0.3V to 7V −0.3V to 6V −0.3V to 6V −0.3V to 6V −0.3V to 6V 2.96W 2.95W 33.7°C/W 5.4°C/W 33.8°C/W 8.9°C/W 150°C 260°C −65°C to 150°C 2kV 200V (Note 4) Supply Input Voltage, VIN ----------------------------------------------------------------------------------------------Control Voltage, VDD (VDD > VOUT + 1.5V) -------------------------------------------------------------------------Junction Temperature Range -------------------------------------------------------------------------------------------Ambient Temperature Range -------------------------------------------------------------------------------------------- 1V to 5.5V 3V to 5.5V −40°C to 125°C −40°C to 85°C Electrical Characteristics (VDD = 5V, CIN = COUT = 10μF, CVDD = 1μF, TA = 25°C, unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit 3 -- 5.5 V VDD Operation Range VDD VDD POR Threshold VPOR_VDD VDD Rising 2.4 2.7 3 V VDD POR Falling Hysteresis VPOR_VDD VDD Falling 0.15 0.2 -- V Input Voltage Range VIN 1 -- 5.5 V VIN POR Threshold VPOR_VIN VIN Rising 0.7 0.8 0.9 V VIN POR Falling Hysteresis VPOR_VIN VIN Falling 0.15 0.2 0.25 V Quiescent Current IQ EN On, No Load -- 0.6 1.2 mA Copyright © 2016 Richtek Technology Corporation. All rights reserved. www.richtek.com 4 is a registered trademark of Richtek Technology Corporation. DS9059-10 February 2016 RT9059 Parameter Reference Voltage Symbol Test Conditions VREF Fixed Output Voltage Accuracy Min Typ Max Unit 0.788 0.8 0.812 V 1.5 -- 1.5 % VOUT Load Regulation VLOAD IOUT = 1mA to 3A, VIN = VOUT+1V -- 0.5 1 % OUT Line Regulation VLINE VDD = 3.6V to 5.5V, VIN = VOUT+1V to 5V, IOUT = 1mA -- 0.2 0.6 % Dropout Voltage VDROP IOUT = 2A -- 250 350 IOUT = 3A -- 350 450 3.1 3.6 4.2 A mV Current Limit ILIM VIN = 3.6V Short Circuit Current ISC VOUT < 0.2V 1 1.4 1.8 A VOUT Pull Low Resistance RPULL VEN = 0V -- 150 --  Thermal Shutdown Temperature TSD -- 160 -- ºC -- 90 -- ºC Thermal Shutdown Recovery TSDR Temperature PGOOD Rising Threshold VTH_PGOOD VOUT Rising -- 90 -- % PGOOD Hysteresis VTH_PGOOD VOUT Falling -- 10 -- % PGOOD Delay Time  -- 1 1.5 ms PGOOD Sink Capability VPGOOD -- 0.2 0.4 V EN Input Voltage ISINK = 10mA Logic-High VIH 1.2 -- -- Logic-Low VIL -- -- 0.4 0.3 0.85 1.4 ms EN Delay Time V 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 = 1.8V, COUT = 10F, ILoad = 1A -- 0.5 -- A Soft-Start Time tSS 1.9 2.8 3.75 ms Note 1. Stresses beyond those listed “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and 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 may affect device reliability. Note 2. θJA is measured at TA = 25°C on a high effective thermal conductivity four-layer test board per JEDEC 51-7. θJC is measured at the exposed pad of the package. Note 3. Devices are ESD sensitive. Handling precaution recommended. Note 4. The device is not guaranteed to function outside its operating conditions. Copyright © 2016 Richtek Technology Corporation. All rights reserved. DS9059-10 February 2016 is a registered trademark of Richtek Technology Corporation. www.richtek.com 5 RT9059 Typical Operating Characteristics Current Limit vs. Temperature 4.2 0.5 4.0 Current Limit (A) Quiescent Current (mA) Quiescent Current vs. Temperature 0.6 0.4 0.3 0.2 3.8 3.6 3.4 3.2 0.1 VDD = 5V, VIN = 3V VDD = 5V, VIN = 3V 3.0 0 -50 -25 0 25 50 75 100 -50 125 -25 0 Temperature (°C) 75 100 125 VREF Voltage vs. Temperature 500 0.90 450 0.85 400 0.80 VREF Voltage (V) Dropout Voltage (mV) 50 Temperature (°C) Dropout Voltage vs. Temperature 350 300 250 200 0.75 0.70 0.65 0.60 150 VOUT = 1.2V, VDD = 5V, IOUT = 3A 100 0.55 VDD = 5V, VIN = 3V 0.50 -50 -25 0 25 50 75 100 125 -50 -25 0 Temperature (°C) 25 50 75 100 125 Temperature (°C) EN Threshold Voltage vs. Temperature PGOOD Delay Time vs. Temperature 900 1.2 800 1.1 700 1.0 EN Voltage (V) PGOOD Delay Time (µs) 25 600 500 400 300 200 Rising 0.9 Falling 0.8 0.7 0.6 0.5 0.4 100 VDD = 5V, VIN = 2V 0.3 0.2 0 -50 -25 0 25 50 75 100 Temperature (°C) Copyright © 2016 Richtek Technology Corporation. All rights reserved. www.richtek.com 6 125 -50 -25 0 25 50 75 100 125 Temperature (°C) is a registered trademark of Richtek Technology Corporation. DS9059-10 February 2016 RT9059 Dropout Voltage vs. Load Current VDD POR Threshold Voltage vs. Temperature 400 3.0 Rising 2.8 350 2.4 Dropout Voltage (mV) VDD Voltage (V) 2.6 Falling 2.2 2.0 1.8 1.6 1.4 300 250 200 150 100 50 1.2 0 1.0 -50 -25 0 25 50 75 100 0 125 1 1.5 2 2.5 Load Current (A) PSRR vs. Frequency Load Transient Response 20 3 VIN = 2.2V, VDD = 5V VOUT = 1.2V, COUT = 10μF 0 PSRR (dB) 0.5 Temperature (°C) VOUT (20mV/Div) -20 -40 -60 IOUT (1A/Div) -80 -100 10 100 1000 10000 100000 Time (1ms/Div) 1000000 Frequency (Hz) VIN Line Transient Response VDD Line Transient Response VIN (1V/Div) VOUT (20mV/Div) VOUT (20mV/Div) VDD = 5V, COUT = 10μF Time (200μs/Div) Copyright © 2016 Richtek Technology Corporation. All rights reserved. DS9059-10 February 2016 VDD (1V/Div) VIN = 2V, COUT = 10μF Time (200μs/Div) is a registered trademark of Richtek Technology Corporation. www.richtek.com 7 RT9059 Start Up from VDD VDD (2V/Div) Start Up from VIN VIN (1V/Div) PGOOD (1V/Div) PGOOD (1V/Div) VOUT (1V/Div) VIN = 3V, IOUT = 0A COUT = 10μF Time (2ms/Div) VOUT (1V/Div) VDD = 5V, IOUT = 0A COUT = 10μF Time (2ms/Div) Start Up from Enable and PGOOD Delay EN (2V/Div) PGOOD (1V/Div) VOUT (1V/Div) IOUT (1A/Div) VIN = 3V, VDD = 5V, IOUT = 1.5A, COUT = 10μF Time (1ms/Div) Copyright © 2016 Richtek Technology Corporation. All rights reserved. www.richtek.com 8 is a registered trademark of Richtek Technology Corporation. DS9059-10 February 2016 RT9059 Applications Information Adjustable Mode Operation Current Limit The output voltage of RT9059 is adjustable from 0.8V to VIN by external voltage divider resisters as shown in Typical Application Circuit (Figure 1). The value of resisters R1 and R2 should be more than 10kΩ to reduce the power loss. The output voltage can be calculated by the following equation : R1   VOUT  VREF  1    R2  The RT9059 contains an independent current limit and the short circuit current protection to prevent unexpected applications. The current limit monitors and controls the pass transistor's gate voltage, minimum limiting the output current to 3.1A typical. When the output voltage is less than 0.2V, the short circuit current protection starts the current fold back function and maintains the loading current at maximum 1.8A. The output can be shorted to ground indefinitely without damaging the part. where VREF is the reference voltage (0.8V typical). Enable The RT9059 goes into shutdown mode when the EN pin is in the logic low condition. During this condition, the pass transistor, error amplifier, and band gap are turned off, reducing the supply current to 1μA typical. The RT9059 goes into operation mode when the EN pin is in the logic high condition. If the EN pin is floating, please notice the RT9059 internal initial logic level. For RT9059, the EN pin function pulls low level internally. So the regulator will be turned off when EN pin is floating. Input Capacitor Good bypassing is recommended from input to ground to improve AC performance. A 10μF input capacitor or greater located as close as possible to the IC is recommended. Output Capacitor The output capacitor must meet both requirements for minimum amount of capacitance and ESR in all LDOs application. The RT9059 is designed specifically to work with low ESR ceramic output capacitor in space-saving and performance consideration. Using a ceramic capacitor which value is at least 10μF on the RT9059 output ensures stability. The RT9059 still works well with output capacitor of other types due to the wide stable ESR range. Output capacitor of larger capacitance can reduce noise and improve load transient response, stability, and PSRR. The output capacitor should be located not more than 0.5 inch from the VOUT pin of the RT9059 and returned to a clean analog ground. Copyright © 2016 Richtek Technology Corporation. All rights reserved. DS9059-10 February 2016 Power Good The power good function is an open-drain output. Connect 100kΩ pull up resistor to VOUT to obtain an output voltage. The PGOOD pin will output high immediately after the output voltage arrives 90% of normal output voltage. Thermal Shutdown Protection Thermal protection limits power dissipation to prevent IC over temperature in RT9059. When the operation junction temperature exceeds 160°C, the over temperature protection circuit starts the thermal shutdown function and turns the pass transistor off. The pass transistor turns on again after the junction temperature cools by 70°C. Thermal Considerations For continuous operation, do not exceed absolute maximum junction temperature. The maximum power dissipation depends on the thermal resistance of the IC package, PCB layout, rate of surrounding airflow, and difference between junction and ambient temperature. The maximum power dissipation can be calculated by the following formula : PD(MAX) = (TJ(MAX) − TA) / θJA where TJ(MAX) is the maximum junction temperature, TA is the ambient temperature, and θJA is the junction to ambient thermal resistance. is a registered trademark of Richtek Technology Corporation. www.richtek.com 9 RT9059 PD(MAX) = (125°C − 25°C) / (33.7°C/W) = 2.96W for SOP-8 (Exposed Pad) package PD(MAX) = (125°C − 25°C) / (33.8°C/W) = 2.95W for WDFN-10L 3x3 package 3.6 Maximum Power Dissipation (W)1 For recommended operating condition specifications, the maximum junction temperature is 125°C. The junction to ambient thermal resistance, θJA, is layout dependent. For SOP-8 (Exposed Pad) package, the thermal resistance, θJA, is 33.7°C/W on a standard JEDEC 51-7 four-layer thermal test board. For WDFN-10L 3x3 package, the thermal resistance, θJA, is 33.8°C/W on a standard JEDEC 51-7 four-layer thermal test board. The maximum power dissipation at TA = 25°C can be calculated by the following formula : Four-Layer PCB SOP-8 (Exposed Pad) 3.0 2.4 WDFN-10L 3x3 1.8 1.2 0.6 0.0 0 25 50 75 100 125 Ambient Temperature (°C) Figure 3. Derating Curve of Maximum Power Dissipation The maximum power dissipation depends on the operating ambient temperature for fixed T J(MAX) and thermal resistance, θJA. The derating curve in Figure 3 allows the designer to see the effect of rising ambient temperature on the maximum power dissipation. Copyright © 2016 Richtek Technology Corporation. All rights reserved. www.richtek.com 10 is a registered trademark of Richtek Technology Corporation. DS9059-10 February 2016 RT9059 Outline Dimension H A M EXPOSED THERMAL PAD (Bottom of Package) Y J X B F C I D Dimensions In Millimeters Dimensions In Inches Symbol Min Max Min Max A 4.801 5.004 0.189 0.197 B 3.810 4.000 0.150 0.157 C 1.346 1.753 0.053 0.069 D 0.330 0.510 0.013 0.020 F 1.194 1.346 0.047 0.053 H 0.170 0.254 0.007 0.010 I 0.000 0.152 0.000 0.006 J 5.791 6.200 0.228 0.244 M 0.406 1.270 0.016 0.050 X 2.000 2.300 0.079 0.091 Y 2.000 2.300 0.079 0.091 X 2.100 2.500 0.083 0.098 Y 3.000 3.500 0.118 0.138 Option 1 Option 2 8-Lead SOP (Exposed Pad) Plastic Package Copyright © 2016 Richtek Technology Corporation. All rights reserved. DS9059-10 February 2016 is a registered trademark of Richtek Technology Corporation. www.richtek.com 11 RT9059 D2 D L E E2 1 e SEE DETAIL A b 2 1 2 1 A A1 A3 DETAIL A Pin #1 ID and Tie Bar Mark Options Note : The configuration of the Pin #1 identifier is optional, but must be located within the zone indicated. Symbol Dimensions In Millimeters Dimensions In Inches Min Max Min Max A 0.700 0.800 0.028 0.031 A1 0.000 0.050 0.000 0.002 A3 0.175 0.250 0.007 0.010 b 0.180 0.300 0.007 0.012 D 2.950 3.050 0.116 0.120 D2 2.300 2.650 0.091 0.104 E 2.950 3.050 0.116 0.120 E2 1.500 1.750 0.059 0.069 e L 0.500 0.350 0.020 0.450 0.014 0.018 W-Type 10L DFN 3x3 Package Richtek Technology Corporation 14F, No. 8, Tai Yuen 1st Street, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5526789 Richtek products are sold by description only. Richtek reserves the right to change the circuitry and/or specifications without notice at any time. Customers should obtain the latest relevant information and data sheets before placing orders and should verify that such information is current and complete. Richtek cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Richtek product. Information furnished by Richtek is believed to be accurate and reliable. However, no responsibility is assumed by Richtek or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Richtek or its subsidiaries. www.richtek.com 12 DS9059-10 February 2016