RT9013 Preliminary 500mA, Low Dropout, Low Noise Ultra-Fast Without Bypass Capacitor CMOS LDO Regulator General Description The RT9013 is a high-performance, 500mA LDO regulator, offering extremely high PSRR and ultra-low dropout. Ideal for portable RF and wireless applications with demanding performance and space requirements. The RT9013 quiescent current as low as 25μA, further prolonging the battery life. The RT9013 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in handheld wireless devices. The RT9013 consumes typical 0.7μA 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. Available in the SOT-23-5, SC-70-5 and WDFN-6L 2x2 package. Ordering Information RT9013 - Package Type B : SOT-23-5 U5 : SC-70-5 QW : WDFN-6L 2x2 (W-Type) Operating Temperature Range P : Pb Free with Commercial Standard G : Green (Halogen Free with Commercial Standard) Note : Richtek Pb-free and Green products are : `RoHS compliant and compatible with the current require- Wide Operating Voltage Ranges : 2.2V to 5.5V Low Dropout : 250mV at 500mA Ultra-Low-Noise for RF Application Ultra-Fast Response in Line/Load Transient Current Limiting Protection Thermal Shutdown Protection High Power Supply Rejection Ratio Output Only 1μ μF Capacitor Required for Stability TTL-Logic-Controlled Shutdown Input RoHS Compliant and 100% Lead (Pb)-Free Applications CDMA/GSM Cellular Handsets Portable Information Appliances Laptop, Palmtops, Notebook Computers Hand-Held Instruments Mini PCI & PCI-Express Cards PCMCIA & New Cards Marking Information For marking information, contact our sales representative directly or through a Richtek distributor located in your area, otherwise visit our website for detail. Pin Configurations (TOP VIEW) VIN 1 GND 2 EN 3 5 VOUT 4 NC SOT-23-5 / SC-70-5 EN GND VIN 1 2 3 GND Fixed Output Voltage 12 : 1.2V 13 : 1.3V 15 : 1.5V 16 : 1.6V : 32 : 3.2V 33 : 3.3V 1B : 1.25V 1H : 1.85V 2H : 2.85V Features 7 6 5 4 NC NC VOUT WDFN-6L 2x2 ments of IPC/JEDEC J-STD-020. `Suitable for use in SnPb or Pb-free soldering processes. `100% matte tin (Sn) plating. DS9013-05 August 2007 www.richtek.com 1 RT9013 Preliminary Typical Application Circuit VIN VIN VOUT COUT 1uF CIN 1uF VOUT RT9013 Chip Enable EN Rpull_down NC GND 100k Functional Pin Description Pin Number RT9013-□□PB RT9013-□□PU5 Pin Name RT9013-□□PQW 5 4 4 5, 6 Pin Function VOUT Regulator Output. NC No Internal Connection. Common Ground. The exposed pad must be soldered 2 2, Exposed Pad (7) GND to a large PCB and connected to GND for maximum power dissipation. Enable Input Logic, Active High. When the EN goes to 3 1 EN 1 3 VIN a logic low, the device will be shutdown mode. Supply Input. Function Block Diagram EN Current Limit POR OTP VIN VREF + MOS Driver VOUT GND www.richtek.com 2 DS9013-05 August 2007 RT9013 Preliminary Absolute Maximum Ratings (Note 1) Supply Input Voltage -----------------------------------------------------------------------------------------------------EN Input Voltage ----------------------------------------------------------------------------------------------------------Power Dissipation, PD @ TA = 25°C SOT-23-5 -------------------------------------------------------------------------------------------------------------------SC-70-5 ---------------------------------------------------------------------------------------------------------------------WDFN-6L 2x2 -------------------------------------------------------------------------------------------------------------Package Thermal Resistance (Note 4) SOT-23-5, θJA --------------------------------------------------------------------------------------------------------------SC-70-5, θJA ---------------------------------------------------------------------------------------------------------------WDFN-6L 2x2, θJA --------------------------------------------------------------------------------------------------------WDFN-6L 2x2, θJC --------------------------------------------------------------------------------------------------------Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------------Junction Temperature ----------------------------------------------------------------------------------------------------Storage Temperature Range -------------------------------------------------------------------------------------------ESD Susceptibility (Note 2) HBM -------------------------------------------------------------------------------------------------------------------------MM ---------------------------------------------------------------------------------------------------------------------------- Recommended Operating Conditions 6V 6V 0.4W 0.3W 0.606W 250°C/W 333°C/W 165°C/W 20°C/W 260°C 125°C −65°C to 150°C 2kV 200V (Note 3) Supply Input Voltage ------------------------------------------------------------------------------------------------------ 2.2V to 5.5V Junction Temperature Range -------------------------------------------------------------------------------------------- −40°C to 125°C Ambient Temperature Range -------------------------------------------------------------------------------------------- −40°C to 85°C Electrical Characteristics (VIN = VOUT + 0.5V, VEN = VIN, CIN = COUT = 1μF (Ceramic), TA = 25°C unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Units 2.2 -- 5.5 V Input Voltage Range VIN Output Noise Voltage VON VOUT = 1.5V, COUT = 1μF, IOUT = 0mA -- 30 -- μVRMS Output Voltage Accuracy (Fixed Output Voltage) ΔVOUT IOUT = 10mA −2 0 +2 % Quiescent Current IQ VEN = 5V, IOUT = 0mA -- 25 50 μA Standby Current ISTBY VEN = 0V -- 0.7 1.5 μA Current Limit ILIM RLOAD = 0Ω, 2.2V ≤ VIN < 2.6V 0.4 0.5 0.85 A RLOAD = 0Ω, 2.7V ≤ VIN ≤ 5.5V 0.5 0.6 0.85 A IOUT = 400mA, 2.2V ≤ VIN < 2.7V -- 160 320 IOUT = 500mA, 2.7V ≤ VIN ≤ 5.5V -- 250 400 1mA < IOUT < 400mA 2.2V ≤ VIN < 2.7V -- -- 0.6 1mA < IOUT < 500mA 2.7V ≤ VIN ≤ 5.5V -- Dropout Voltage (Note 5) (Note 6) Load Regulation (Note 7) (Fixed Output Voltage) VDROP ΔVLOAD mV % -- 1 To be continued DS9013-05 August 2007 www.richtek.com 3 RT9013 Preliminary Parameter EN Threshold Test Conditions Min Typ Max Units Logic-Low Voltage VIL 0 -- 0.6 Logic-High Voltage VIH 1.6 -- 5.5 IEN -- 0.1 1 μA Enable Pin Current Power Supply Rejection Rate Symbol f = 100kHz V PSRR IOUT = 300mA -- -40 -- dB Line Regulation ΔVLINE VIN = (VOUT+0.5) to 5.5V, IOUT = 1mA -- 0.01 0.2 %/V Thermal Shutdown Temperature TSD -- 170 -- Thermal Shutdown Hysteresis ΔTSD -- 30 -- °C 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. Devices are ESD sensitive. Handling precaution recommended. Note 3. The device is not guaranteed to function outside its operating conditions. Note 4. θJA is measured in the natural convection at TA = 25°C on a low effective thermal conductivity test board of JEDEC 51-3 thermal measurement standard. The case position of θJC is on the exposed pad for the WDFN-6L 2x2 packages. Note 5. Quiescent, or ground current, is the difference between input and output currents. It is defined by IQ = IIN - IOUT under no load condition (IOUT = 0mA). The total current drawn from the supply is the sum of the load current plus the ground pin current. Note 6. The dropout voltage is defined as VIN -VOUT, which is measured when VOUT is VOUT(NORMAL) - 100mV. Note 7. Regulation is measured at constant junction temperature by using a 2ms current pulse. Devices are tested for load regulation in the load range from 10mA to 500mA. www.richtek.com 4 DS9013-05 August 2007 RT9013 Preliminary Typical Operating Characteristics (CIN = COUT = 1μ/X7R, unless otherwise specified) Output Voltage vs. Temperature 1.60 Quiescent Current vs. Temperature 30 VIN = 2.5V 1.58 Quiescent Current (uA) 1.56 Output Voltage (V) VIN = 2.5V 28 1.54 1.52 1.50 1.48 1.46 1.44 26 24 22 20 18 16 14 12 1.42 10 1.40 -50 -25 0 25 50 75 100 -50 125 -25 Temperature (°C) RT9013-33PQW TJ = 125°C TJ = 25°C 200 150 TJ = -40°C 100 50 Dropout Voltage (mV) Dropout Voltage (mV) 250 100 125 RT9013-25PQW TJ = 125°C 250 TJ = 25°C 200 150 TJ = -40°C 100 50 0 50 100 150 200 250 300 350 400 450 500 0 50 100 150 200 250 300 350 400 450 500 Load Current (mA) Load Current (mA) EN Pin Shutdown Response Start Up VIN = 2.5V, ILOAD = 50mA 4 RT9013-15PQW 2 Output Voltage (V) 0 2 1 0 Time (100μs/Div) DS9013-05 August 2007 EN Pin Voltage (V) 0 EN Pin Voltage (V) 75 300 0 Output Voltage (V) 50 Dropout Voltage vs. Load Current 350 300 25 Temperature (°C) Dropout Voltage vs. Load Current 350 0 4 VIN = 2.5V, ILOAD = 75mA RT9013-15PQW 2 0 1.0 0.5 0 Time (5μs/Div) www.richtek.com 5 RT9013 Preliminary Line Transient Response Line Transient Response Input Voltage Deviation (V) 3.6 2.6 20 0 -20 VIN = 2.6V to 3.6V, ILOAD = 100mA Output Voltage Deviation (mV) Output Voltage Deviation (mV) Input Voltage Deviation (V) VIN = 2.6V to 3.6V, ILOAD = 10mA RT9013-15PQW 3.6 2.6 20 0 -20 Time (100μs/Div) Time (100μs/Div) Load Transient Response Load Transient Response VIN = 2.5V, ILOAD = 10mA to 300mA Load Current (mA) 50 0 Output Voltage Deviation (mV) Output Voltage Deviation (mV) Load Current (mA) VIN = 2.5V, ILOAD = 10mA to 100mA 100 50 0 -50 RT9013-15PQW 400 200 0 50 0 -50 Time (100μs/Div) Noise Noise VIN = 3.0V (By Battery), ILOAD = 10mA 300 300 200 200 Noise (μV/Div) Noise (μV/Div) RT9013-15PQW Time (100μs/Div) VIN = 3.0V (By Battery), No Load 100 0 -100 100 0 -100 -200 -200 -300 RT9013-15PQW -300 RT9013-15PQW Time (10ms/Div) www.richtek.com 6 RT9013-15PQW Time (10ms/Div) DS9013-05 August 2007 RT9013 Preliminary Noise 20 VIN = 3.0V (By Battery), ILOAD = 300mA VIN = 2.5V to 2.6V 10 300 0 200 -10 100 PSRR(dB) Noise (μV/Div) PSRR 0 -100 -200 -300 -20 -30 -40 ILOAD = 100mA ILOAD = 300mA -50 -60 RT9013-15PQW ILOAD = 10mA -70 Time (10ms/Div) 10 100 1000 10000 100000 1000000 Frequency (Hz) DS9013-05 August 2007 www.richtek.com 7 RT9013 Preliminary Applications Information Enable Like any low-dropout regulator, the external capacitors used with the RT9013 must be carefully selected for regulator stability and performance. Using a capacitor whose value is > 1μF on the RT9013 input and the amount of capacitance can be increased without limit. The input capacitor must be located a distance of not more than 0.5 inch from the input pin of the IC and returned to a clean analog ground. Any good quality ceramic can be used for this capacitor. The capacitor with larger value and lower ESR (equivalent series resistance) provides better PSRR and line-transient response. The RT9013 goes into sleep mode when the EN pin is in a logic low condition. During this condition, the RT9013 has an EN pin to turn on or turn off regulator, When the EN pin is logic hight, the regulator will be turned on. The supply current to 0.7μA typical. The EN pin may be directly tied The output capacitor must meet both requirements for minimum amount of capacitance and ESR in all LDOs application. The RT9013 is designed specifically to work with low ESR ceramic output capacitor in space-saving and performance consideration. Using a ceramic capacitor whose value is at least 1μF with ESR is > 20mΩ on the RT9013 output ensures stability. The RT9013 still works well with output capacitor of other types due to the wide stable ESR range. Figure 1. shows the curves of allowable ESR range as a function of load current for various output capacitor values. 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 RT9013 and returned to a clean analog ground. ⎛ ⎞ PSRR = 20 × log⎜ ΔGain Error ⎟ ⎝ ΔSupply ⎠ Note that when heavy load measuring, Δsupply will cause Δtemperature. And Δtemperature will cause Δoutput voltage. So the heavy load PSRR measuring is include temperature effect. Region of Stable COUT ESR vs. Load Current Region of Stable COUT ESR (Ω) 100 Unstable Range 10 to VIN to keep the part on. The Enable input is CMOS logic and cannot be left floating. PSRR The power supply rejection ratio (PSRR) is defined as the gain from the input to output divided by the gain from the supply to the output. The PSRR is found to be Current limit The RT9013 contains an independent current limiter, which monitors and controls the pass transistor's gate voltage, limiting the output current to 0.6A (typ.). The output can be shorted to ground indefinitely without damaging the part. Thermal Considerations Thermal protection limits power dissipation in RT9013. When the operation junction temperature exceeds 170°C, the OTP circuit starts the thermal shutdown function and turns the pass element off. The pass element turn on again after the junction temperature cools by 30°C. For continuous operation, do not exceed absolute maximum operation junction temperature 125°C. The power dissipation definition in device is : 1 Stable Range 0.1 PD = (VIN − VOUT) x IOUT + VIN x IQ 0.01 RT9013-33PB, VIN = 5V CIN = COUT = 1μF/X7R Unstable Range 0.001 0 100 200 300 Load Current (mA) Figure 1 www.richtek.com 8 400 500 The maximum power dissipation depends on the thermal resistance of IC package, PCB layout, the rate of surroundings airflow and temperature difference between junction to ambient. The maximum power dissipation can be calculated by following formula : PD(MAX) = ( TJ(MAX) − TA ) /θJA DS9013-05 August 2007 Preliminary RT9013 Where T J(MAX) is the maximum operation junction temperature, TA is the ambient temperature and the θJA is the junction to ambient thermal resistance. For recommended operating conditions specification of RT9013, where T J(MAX) is the maximum junction temperature of the die (125°C) and TA is the operated ambient temperature. The junction to ambient thermal resistance θJA (θJA is layout dependent) for WDFN-6L 2x2 package is 165°C/W, SOT-23-5 package is 250°C/W and SC-70-5 package is 333°C/W on the standard JEDEC 51-3 single-layer thermal test board. The maximum power dissipation at TA = 25°C can be calculated by following formula : P D(MAX) = (125°C − 25°C) / 165 = 0.606 W for WDFN-6L 2x2 packages PD(MAX) = (125°C − 25°C) / 250 = 0.400 W for SOT-23-5 packages PD(MAX) = (125°C − 25°C) / 333 = 0.300 W for SC-70-5 packages The maximum power dissipation depends on operating ambient temperature for fixed TJ(MAX) and thermal resistance θJA. For RT9013 packages, the Figure 2 of derating curves allows the designer to see the effect of rising ambient temperature on the maximum power allowed. 0.7 Single Layer PCB Power Dissipation (W) 0.6 0.5 WDFN-6L 2x2 SOT-23-5 0.4 0.3 SC-70-5 0.2 0.1 0 0 12.5 25 37.5 50 62.5 75 87.5 100 113 125 Ambient Temperature (°C) Figure 2. Derating Curves for RT9013 Packages DS9013-05 August 2007 www.richtek.com 9 RT9013 Preliminary Outline Dimension H D L B C b A A1 e Symbol Dimensions In Millimeters Dimensions In Inches Min Max Min Max A 0.889 1.295 0.035 0.051 A1 0.000 0.152 0.000 0.006 B 1.397 1.803 0.055 0.071 b 0.356 0.559 0.014 0.022 C 2.591 2.997 0.102 0.118 D 2.692 3.099 0.106 0.122 e 0.838 1.041 0.033 0.041 H 0.080 0.254 0.003 0.010 L 0.300 0.610 0.012 0.024 SOT-23-5 Surface Mount Package www.richtek.com 10 DS9013-05 August 2007 RT9013 Preliminary H D L B C b A A1 e Symbol Dimensions In Millimeters Dimensions In Inches Min Max Min Max A 0.800 1.100 0.031 0.044 A1 0.000 0.100 0.000 0.004 B 1.150 1.350 0.045 0.054 b 0.150 0.400 0.006 0.016 C 1.800 2.450 0.071 0.096 D 1.800 2.250 0.071 0.089 e 0.650 0.026 H 0.080 0.260 0.003 0.010 L 0.210 0.460 0.008 0.018 SC-70-5 Surface Mount Package DS9013-05 August 2007 www.richtek.com 11 RT9013 Preliminary D2 D L E E2 1 e b A A1 SEE DETAIL A 2 1 2 1 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 0.200 0.350 0.008 0.014 D 1.950 2.050 0.077 0.081 D2 1.000 1.450 0.039 0.057 E 1.950 2.050 0.077 0.081 E2 0.500 0.850 0.020 0.033 e L 0.650 0.300 0.026 0.400 0.012 0.016 W-Type 6L DFN 2x2 Package Richtek Technology Corporation Richtek Technology Corporation Headquarter Taipei Office (Marketing) 5F, No. 20, Taiyuen Street, Chupei City 8F, No. 137, Lane 235, Paochiao Road, Hsintien City Hsinchu, Taiwan, R.O.C. Taipei County, Taiwan, R.O.C. Tel: (8863)5526789 Fax: (8863)5526611 Tel: (8862)89191466 Fax: (8862)89191465 Email: [email protected] www.richtek.com 12 DS9013-05 August 2007