RT9013-1BGQW

Preliminary RT9013 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. Features 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 1μF 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 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) 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 Note : Richtek Pb-free and Green products are : RoHS compliant and compatible with the current requirements 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 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 GND EN 1 2 3 4 NC 5 VOUT SOT-23-5 / SC-70-5 EN GND VIN 1 2 3 6 5 4 7 NC NC VOUT WDFN-6L 2x2 GND www.richtek.com 1 RT9013 Typical Application Circuit VIN Preliminary VIN CIN 1uF VOUT COUT 1uF RT9013 VOUT Chip Enable EN Rpull_down 100k GND NC Functional Pin Description Pin Number RT9013-□□PB RT9013-□□PU5 5 4 2 RT9013-□□PQW 4 5, 6 Pin Name VOUT NC Regulator Output. No Internal Connection. Common Ground. The exposed pad must be soldered 2, Exposed Pad (7) GND to a large PCB and connected to GND for maximum power dissipation. 3 1 1 3 EN VIN Enable Input Logic, Active High. When the EN goes to a logic low, the device will be shutdown mode. Supply Input. Pin Function Function Block Diagram EN POR OTP VREF Current Limit VIN + MOS Driver VOUT GND www.richtek.com 2 DS9013-05 August 2007 Preliminary Absolute Maximum Ratings (Note 1) RT9013 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 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 (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 Input Voltage Range Output Noise Voltage Output Voltage Accuracy (Fixed Output Voltage) Quiescent Current Standby Current Current Limit Dropout Voltage (Note 6) (Note 5) Symbol VIN VON ΔVOUT IQ ISTBY ILIM VDROP Test Conditions VOUT = 1.5V, COUT = 1μF, IOUT = 0mA IOUT = 10mA VEN = 5V, IOUT = 0mA VEN = 0V RLOAD = 0Ω, 2.2V ≤ VIN < 2.6V RLOAD = 0Ω, 2.7V ≤ VIN ≤ 5.5V IOUT = 400mA, 2.2V ≤ VIN < 2.7V IOUT = 500mA, 2.7V ≤ VIN ≤ 5.5V 1mA < IOUT < 400mA 2.2V ≤ VIN < 2.7V 1mA < IOUT < 500mA 2.7V ≤ VIN ≤ 5.5V Min 2.2 -−2 --0.4 0.5 ----- Typ -30 0 25 0.7 0.5 0.6 160 250 --- Max 5.5 -+2 50 1.5 0.85 0.85 320 400 0.6 Units V μVRMS % μA μA A A mV Load Regulation (Note 7) (Fixed Output Voltage) ΔVLOAD % 1 To be continued DS9013-05 August 2007 www.richtek.com 3 RT9013 Parameter EN Threshold Logic-Low Voltage Logic-High Voltage Symbol VIL VIH IEN f = 100kHz PSRR ΔVLINE TSD ΔTSD Preliminary Test Conditions Min 0 1.6 -IOUT = 300mA VIN = (VOUT+0.5) to 5.5V, IOUT = 1mA ----Typ --0.1 -40 0.01 170 30 Max 0.6 5.5 1 -0.2 --Units V μA dB %/V °C Enable Pin Current Power Supply Rejection Rate Line Regulation Thermal Shutdown Temperature Thermal Shutdown Hysteresis 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 Preliminary Typical Operating Characteristics (CIN = COUT = 1μ/X7R, unless otherwise specified) RT9013 Quiescent Current vs. Temperature 30 28 Output Voltage vs. Temperature 1.60 1.58 1.56 VIN = 2.5V VIN = 2.5V Quiescent Current (uA) 26 24 22 20 18 16 14 12 10 Output Voltage (V) 1.54 1.52 1.50 1.48 1.46 1.44 1.42 1.40 -50 -25 0 25 50 75 100 125 -50 -25 0 25 50 75 100 125 Temperature (°C) Temperature (°C) Dropout Voltage vs. Load Current 350 300 Dropout Voltage vs. Load Current 350 RT9013-33PQW TJ = 125°C RT9013-25PQW TJ = 125°C 300 Dropout Voltage (mV) 250 200 150 Dropout Voltage (mV) TJ = 25°C 250 200 150 100 50 0 TJ = 25°C TJ = -40°C 100 50 0 0 50 100 150 200 250 300 350 400 450 500 TJ = -40°C 0 50 100 150 200 250 300 350 400 450 500 Load Current (mA) Load Current (mA) EN Pin Shutdown Response EN Pin Voltage (V) EN Pin Voltage (V) VIN = 2.5V, ILOAD = 50mA 4 RT9013-15PQW 2 0 4 2 0 Start Up VIN = 2.5V, ILOAD = 75mA RT9013-15PQW Output Voltage (V) Output Voltage (V) 2 1 0 1.0 0.5 0 Time (100μs/Div) Time (5μs/Div) DS9013-05 August 2007 www.richtek.com 5 RT9013 Line Transient Response VIN = 2.6V to 3.6V, ILOAD = 10mA Preliminary Line Transient Response VIN = 2.6V to 3.6V, ILOAD = 100mA Input Voltage Deviation (V) 3.6 2.6 Input Voltage Deviation (V) Output Voltage Deviation (mV) RT9013-15PQW 3.6 2.6 Output Voltage Deviation (mV) 20 0 -20 20 0 -20 RT9013-15PQW Time (100μs/Div) Time (100μs/Div) Load Transient Response VIN = 2.5V, ILOAD = 10mA to 100mA Load Transient Response VIN = 2.5V, ILOAD = 10mA to 300mA Load Current (mA) 100 50 0 Load Current (mA) Output Voltage Deviation (mV) 400 200 0 Output Voltage Deviation (mV) 50 0 -50 RT9013-15PQW 50 0 -50 RT9013-15PQW Time (100μs/Div) Time (100μs/Div) Noise VIN = 3.0V (By Battery), No Load 300 300 Noise VIN = 3.0V (By Battery), ILOAD = 10mA Noise (μV/Div) Noise (μV/Div) 200 100 0 -100 -200 -300 RT9013-15PQW 200 100 0 -100 -200 -300 RT9013-15PQW Time (10ms/Div) Time (10ms/Div) www.richtek.com 6 DS9013-05 August 2007 Preliminary RT9013 PSRR VIN = 2.5V to 2.6V Noise VIN = 3.0V (By Battery), ILOAD = 300mA 300 200 20 10 0 -10 Noise (μV/Div) PSRR(dB) 100 0 -100 -200 -300 RT9013-15PQW -20 -30 -40 -50 -60 -70 ILOAD = 100mA ILOAD = 300mA ILOAD = 10mA 10 100 1000 10000 100000 1000000 Time (10ms/Div) Frequency (Hz) DS9013-05 August 2007 www.richtek.com 7 RT9013 Applications Information Preliminary Enable 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 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 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 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. 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 : PD = (VIN − VOUT) x IOUT + VIN x IQ Region of Stable COUT ESR vs. Load Current 100 Region of Stable COUT ESR (Ω) 10 Unstable Range 1 Stable Range 0.1 0.01 0.001 0 RT9013-33PB, VIN = 5V CIN = COUT = 1μF/X7R 100 200 Unstable Range 300 400 500 Load Current (mA) 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 Figure 1 www.richtek.com 8 Preliminary Where T J(MAX) i s 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) i s 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 − 2 5 ° 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 0.6 RT9013 Single Layer PCB Power Dissipation (W) 0.5 SOT-23-5 0.4 0.3 0.2 0.1 0 0 12.5 25 37.5 50 WDFN-6L 2x2 SC-70-5 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 Outline Dimension Preliminary H D L C B b A A1 e Symbol A A1 B b C D e H L Dimensions In Millimeters Min 0.889 0.000 1.397 0.356 2.591 2.692 0.838 0.080 0.300 Max 1.295 0.152 1.803 0.559 2.997 3.099 1.041 0.254 0.610 Dimensions In Inches Min 0.035 0.000 0.055 0.014 0.102 0.106 0.033 0.003 0.012 Max 0.051 0.006 0.071 0.022 0.118 0.122 0.041 0.010 0.024 SOT-23-5 Surface Mount Package www.richtek.com 10 DS9013-05 August 2007 Preliminary RT9013 H D L C B b A A1 e Symbol A A1 B b C D e H L Dimensions In Millimeters Min 0.800 0.000 1.150 0.150 1.800 1.800 0.650 0.080 0.210 0.260 0.460 Max 1.100 0.100 1.350 0.400 2.450 2.250 Dimensions In Inches Min 0.031 0.000 0.045 0.006 0.071 0.071 0.026 0.003 0.008 0.010 0.018 Max 0.044 0.004 0.054 0.016 0.096 0.089 SC-70-5 Surface Mount Package DS9013-05 August 2007 www.richtek.com 11 RT9013 Preliminary D D2 L E E2 SEE DETAIL A 1 e A A1 A3 b 2 1 2 1 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 A A1 A3 b D D2 E E2 e L Dimensions In Millimeters Min 0.700 0.000 0.175 0.200 1.950 1.000 1.950 0.500 0.650 0.300 0.400 Max 0.800 0.050 0.250 0.350 2.050 1.450 2.050 0.850 Dimensions In Inches Min 0.028 0.000 0.007 0.008 0.077 0.039 0.077 0.020 0.026 0.012 0.016 Max 0.031 0.002 0.010 0.014 0.081 0.057 0.081 0.033 W-Type 6L DFN 2x2 Package Richtek Technology Corporation Headquarter 5F, No. 20, Taiyuen Street, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5526789 Fax: (8863)5526611 Richtek Technology Corporation Taipei Office (Marketing) 8F, No. 137, Lane 235, Paochiao Road, Hsintien City Taipei County, Taiwan, R.O.C. Tel: (8862)89191466 Fax: (8862)89191465 Email: marketing@richtek.com www.richtek.com 12 DS9013-05 August 2007