RT916116GZL

RT9161/A 300/500mA Low Dropout Linear Voltage Regulator General Description The RT9161/A is a 300/500mA fixed output voltage low dropout linear regulator. Typical ground current is approximately 110μA, from zero to maximum loading conditions. Wide range of available output voltage fits most of applications. Built-in output current-limiting most thermal-limiting provide maximal protection against any fault conditions. For ease of application, the RT9161/A comes in the popular 3-pin SOT-23 (300mA), SOT-89 (300mA), SOT-223 (500mA), or TO-92 packages. Features Low Dropout Voltage of 200mV at Output Current 100mA, 450mV at Output Current 300mA, and 750mV at 500mA Output Current Guaranteed 300/500mA Output Current Internal 1.5Ω P-MOSFET Draws No Base Current Low Ground Current 110μA 2% Accuracy Output Voltage Input Voltage Range up to 12V Extremely Tight Load Regulation Fast Transient Response Current-limiting and Thermal-limiting RoHS Compliant and 100% Lead (Pb)-Free Ordering Information RT9161/APackage Type V : SOT-23-3 X : SOT-89 G : SOT-223 ZL : TO-92 (L-Type) ZT : TO-92 (T-Type) Operating Temperature Range P : Pb Free with Commercial Standard G : Green (Halogen Free with Commercial Standard) Output Voltage 15 : 1.5V 16 : 1.6V : 49 : 4.9V 50 : 5.0V 500mA Output Current 300mA Output Current Applications Voltage Regulator for LAN Card, CD-ROM, and DVD Wireless Communication Systems Battery Powered Systems 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 3 1 GND 2 VOUT 1 2 3 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. SOT-23-3 GND VIN VOUT (TAB) SOT-89 1 2 3 GND VIN VOUT (TAB) SOT-223 DS9161/A-31 March 2007 www.richtek.com 1 RT9161/A 3 2 1 VOUT GND VIN 3 2 1 VOUT VIN GND TO-92 RT9161/ACZL TO-92 CZT RT9161/A- Typical Application Circuit RT9161/A VIN CIN 1uF VIN VOUT GND COUT 10uF VOUT + + Electrolytic Functional Pin Description Pin Name VOUT GND VIN Pin Function Output Voltage Ground Power Input Function Block Diagram VIN VOUT Error Amp + Current Limiting Sensor Thermal Shutdown 1.2V Reference GND www.richtek.com 2 DS9161/A-31 March 2007 RT9161/A Absolute Maximum Ratings Input Voltage ----------------------------------------------------------------------------------------------------------Operating Junction Temperature Range ------------------------------------------------------------------------Storage Temperature Range --------------------------------------------------------------------------------------Power Dissipation, PD @ TA = 25°C SOT-23-3 --------------------------------------------------------------------------------------------------------------SOT-89 -----------------------------------------------------------------------------------------------------------------SOT-223 ---------------------------------------------------------------------------------------------------------------TO-92 -------------------------------------------------------------------------------------------------------------------Package Thermal Resistance (Note 4) SOT-23-3, θJA ---------------------------------------------------------------------------------------------------------SOT-23-3, θJC --------------------------------------------------------------------------------------------------------SOT-89, θJA -----------------------------------------------------------------------------------------------------------SOT-89, θJC -----------------------------------------------------------------------------------------------------------SOT-223, θJA ----------------------------------------------------------------------------------------------------------SOT-223, θJC ---------------------------------------------------------------------------------------------------------TO-92, θJA -------------------------------------------------------------------------------------------------------------TO-92, θJC -------------------------------------------------------------------------------------------------------------- −0.3 to 14V −40°C to 125°C −65°C to 150°C 0.4W 0.571W 0.741W 0.625W 250°C/W 140°C/W 175°C/W 100°C/W 135°C/W 15°C/W 160°C/W 125°C/W Electrical Characteristics (TA = 25°C, CIN = 1μF, COUT = 10μF, unless otherwise specified.) Parameter Output Voltage Accuracy Output Voltage Temperature Coefficient Line Regulation Load Regulation (Note1) Current Limit (Note 2) RT9161 RT9161A Symbol ΔVOUT Test Conditions IL = 1mA, VIN = 5V Min -2 -- Typ -50 2 1 580 900 110 Max +2 150 3 30/50 --180 Units % PPM/°C %VOUT mV mA mV μA ΔVLINE ΔVLOAD ILIM VDROP IL = 1mA, VIN= 4.5 ~ 12V IL = 1mA ~ 300/500mA, VIN = 5V VIN= 5V, VOUT = 0V IL = 300/500mA --350 500 --- Dropout Voltage (Note 3) Standby Current 450/750 600/1000 ISTANDBY IL = 0, VIN = 12V Note 1. Regulation is measured at constant junction temperature, using pulsed ON time. Note 2. Current Limit is measured at constant junction temperature, using pulsed ON time. Note 3. The dropout voltage is defined as VIN -VOUT, which is measured when VOUT is VOUT(NORMAL) − 100mV. Note 4. θJA is measured in the natural convection at TA = 25°C on a low effective single layer thermal conductivity test board of JEDEC 51-3 thermal measurement standard. DS9161/A-31 March 2007 www.richtek.com 3 RT9161/A Typical Operating Characteristics Temperature Stability 3.4 Quiescient Current vs. Temperature 0.14 0.12 Quiescient Current (mA) Output Voltage (V) 3.2 VOUT = 3.3V 0.10 0.08 0.06 0.04 0.02 3 2.8 2.6 VOUT = 2.5V VIN = 5V 2.4 -50 -25 0 25 50 75 100 125 0.00 -30 0 30 60 90 120 Temperature (°C) Temperature (°C) Dropout Voltage (VIN-VOUT) 1 1.4 Short Circuit Current 125°C 125°C Short Circuit Current (A) Dropout Voltage (V) 0.8 1.2 1 0.8 0.6 0.4 0.2 0 25°C 0.6 25°C 0.4 0.2 VOUT = 3.3V 0 0 100 200 300 400 500 0 2 4 6 8 10 I Load (mA) Input/Output Differential (V) Line Transient Response 7 Input Voltage Deviation (V) 6 5 4 Input Voltage Deviation (V) Line Transient Response 7 6 5 4 COUT = 10μF Electrolytic IOUT = 0.1A T VOUT = 3.3V TA = 25°C COUT = 10μF Electrolytic IOUT = 0.1A T VOUT = 2.5V TA = 25°C ≈ Output Voltage Deviation (mV) 100 02 > -1001 > -200 T T ≈ Output Voltage Deviation (mV) ≈ 100 02 > -1001 > -200 T T ≈ Time (100 s/Div) Time (100μμS/Div) Time (100μS/Div Time (100μs/Div) ) www.richtek.com 4 DS9161/A-31 March 2007 RT9161/A Load Transient Response Output Voltage Deviation (mV) Output Voltage Deviation (mV) Load Transient Response 150 60 CIN = 1μF 40 COUT = 10μF 20 TA = 25°C 2 0> VIN = 5V VOUT = 3.3V CIN = 1μF 100 COUT = 10μF 50 TA = 25°C 02 > -50 T T VIN = 5V VOUT = 3.3V T T -20 Load Current (mA) ≈ T Load Current (mA) 100 50 1 -50 1> ≈ ≈ T 200 100 1 10 > ≈ -100 Time (100μμS/Div) Time (100 s/Div) Time (100μS/Div) Time (100μs/Div) Load Transient Response Output Voltage Deviation (mV) 40 COUT = 10μF 20 02 > -20 Load Current (mA) Output Voltage Deviation (mV) 60 Load Transient Response 150 CIN = 1μF VIN = 5V VOUT = 2.5V CIN = 1μF 100 COUT = 10μF 50 02 > -50 VIN = 5V VOUT = 2.5V TA = 25°C T T TA = 25°C T T ≈ T ≈ Load Current (mA) ≈ T ≈ 100 50 1 1> 200 100 1 10 > -50 Time (100 s/Div) Time (100μμS/Div) -100 Time (100 s/Div) Time (100μμS/Div) 0 -10 -20 -30 -40 -50 PSRR CIN = 1uF COUT = 10uF Tantalum VIN = 5V VOUT = 3.3V TA = 25°C 0 -10 PSRR CIN = 1uF COUT = 10uF Tantalum VIN = 5V VOUT = 2.5V TA = 25°C 100mA 100mA PSRR (dB) PSRR (dB) 10mA -20 -30 -40 -50 10mA -60 10 100 -60 10 100 1000 1K 10000 10K 100000 100K 1000000 1M 1K 1000 10K 10000 100K 100000 1M 1000000 Frequency (Hz) DS9161/A-31 March 2007 Frequency (Hz) www.richtek.com 5 RT9161/A Application Information A 10uF capacitor with 200mΩ or higher ESR, connecting between VOUT and GND pins, is recommended for stability. A capacitor with ESR smaller than 200 mΩ may cause VOUT oscillation as shown in Figure 1. Operating temperature should be well considered to ensure that the capacitance is no less than 10uF over the operating temperature range. Please take the notice that Aluminum electrolytic capacitors may cause VOUT oscillation when operating below -25°C. The capacitance can be increased without limit for better transient response. A 1uF or higher capacitor should be placed between VIN and GND to filter out input noise and ensure stable output voltage. PD(MAX) = ( TJ(MAX) - TA ) /θJA Where T J(MAX) i s the maximum operation junction temperature 125°C, TA is the ambient temperature and the θJA is the junction to ambient thermal resistance. For recommended operating conditions specification of RT9161/A, where T J(MAX) i s the maximum junction temperature of the die (125°C) and TA is the maximum ambient temperature. The junction to ambient thermal resistance θJA is layout dependent. For SOT-223 packages, the thermal resistance θJA is 135°C/W on the standard JEDEC 51-3 single-layer 1S thermal test board. The maximum power dissipation at TA = 25°C can be calculated by following formula: PD(MAX) = ( 125°C - 25°C ) / 250 = 0.400 W for SOT-23-3 packages PD(MAX) = ( 125°C - 25°C ) / 175 = 0.571 W for SOT-89 packages PD(MAX) = ( 125°C - 25°C ) / 135 = 0.741 W for SOT-223 packages Stable 0.1 Region of Stable COUT ESR vs. Load Current 100 10 VIN = 3.3V CIN = 1uF COUT = 10uF C OUT ESR (Ω) 1 Instable PD(MAX) = ( 125°C - 25°C ) / 160 = 0.625 W for TO-92 packages The maximum power dissipation depends on operating ambient temperature for fixed T J(MAX) and thermal resistance θJA. For RT9161/A packages, the Figure 2 of derating curves allows the designer to see the effect of rising ambient temperature on the maximum power allowed. Maximum Power Dissipation (mW) 800 0.01 0 100 200 300 400 500 Load Current (mA) Figure 1 Thermal protection limits power dissipation in RT9161/A. When the operation junction temperature exceeds 165°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 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: www.richtek.com 6 SOT-223 package 700 600 500 400 300 200 100 0 0 15 30 45 60 75 90 105 120 TO-29 package SOT-89 package SOT-23-3 package Ambient Temperature (°C) Figure 2. Derating Curves DS9161/A-31 March 2007 RT9161/A Outline Dimension D A E L e D1 b C A1 Symbol A A1 b C D D1 E e L Dimensions In Millimeters Min 3.175 1.143 0.406 0.406 4.445 3.429 4.318 1.143 12.700 Max 4.191 1.372 0.533 0.533 5.207 5.029 5.334 1.397 Dimensions In Inches Min 0.125 0.045 0.016 0.016 0.175 0.135 0.170 0.045 0.500 Max 0.165 0.054 0.021 0.021 0.205 0.198 0.210 0.055 3-Lead TO-92 Plastic Package DS9161/A-31 March 2007 www.richtek.com 7 RT9161/A D H L C B e A A1 b 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 1.803 0.080 0.300 Max 1.295 0.152 1.803 0.508 2.997 3.099 2.007 0.254 0.610 Dimensions In Inches Min 0.035 0.000 0.055 0.014 0.102 0.106 0.071 0.003 0.012 Max 0.051 0.006 0.071 0.020 0.118 0.122 0.079 0.010 0.024 SOT-23-3 Surface Mount Package www.richtek.com 8 DS9161/A-31 March 2007 RT9161/A D D1 A C B C1 e e H A b b b1 Symbol A b B b1 C C1 D D1 e H Dimensions In Millimeters Min 1.397 0.356 2.388 0.406 3.937 0.787 4.394 1.397 1.448 0.356 Max 1.600 0.483 2.591 0.533 4.242 1.194 4.597 1.753 1.549 0.432 Dimensions In Inches Min 0.055 0.014 0.094 0.016 0.155 0.031 0.173 0.055 0.057 0.014 Max 0.063 0.019 0.102 0.021 0.167 0.047 0.181 0.069 0.061 0.017 3-Lead SOT-89 Surface Mount Package DS9161/A-31 March 2007 www.richtek.com 9 RT9161/A D D1 H C B L e e L1 A b A1 Symbol A A1 b B C D D1 e H L L1 Dimensions In Millimeters Min 1.450 0.020 0.610 3.302 6.706 6.299 2.896 2.261 0.229 1.550 0.800 Max 1.803 0.100 0.787 3.708 7.290 6.706 3.150 2.362 0.330 1.950 1.100 Dimensions In Inches Min 0.057 0.0008 0.024 0.130 0.264 0.248 0.114 0.089 0.009 0.061 0.009 Max 0.071 0.0047 0.031 0.146 0.287 0.264 0.124 0.093 0.013 0.077 0.013 3-Lead SOT-223 Surface Mount 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 10 DS9161/A-31 March 2007