RT9161 RICHTEK | Alldatasheet

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Technical content

Features

zzzzz Low Dropout Voltage of 200mV at Output Current 100mA, 450mV at Output Current 300mA, and 750mV at 500mA Output Current zzzzz Guaranteed 300/500mA Output Current zzzzz Internal 1.5ΩΩΩΩΩ P-MOSFET Draws No Base Current zzzzz Low Ground Current 110μμμμμA zzzzz 2% Accuracy Output Voltage zzzzz Input Voltage Range up to 12V zzzzz Extremely Tight Load Regulation zzzzz Fast Transient Response zzzzz Current-limiting and Thermal-limiting zzzzz RoHS Compliant and 100% Lead (Pb)-Free Note : RichTek Pb-free and Green products are : \RoHS compliant and compatible with the current require- ments of IPC/JEDEC J-STD-020. \Suitable for use in SnPb or Pb-free soldering processes. \`100%matte tin (Sn) plating. GND VIN (TAB) VOUT 123 SOT-89 SOT-23-3 1 2 GND VOUT VIN SOT-223 GND VIN (TAB) VOUT 1 2 3 Output Voltage 15 : 1.5V 16 : 1.6V 49 : 4.9V 50 : 5.0V RT9161/A- Package 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 Commer- cial Standard) 500mA Output Current 300mA Output Current

DS9161/A-31 March 2007www.richtek.com Function Block Diagram Typical Application Circuit Pin Name Pin Function VOUT Output Voltage GND Ground VIN Power Input Functional Pin Description Current Limiting Sensor Thermal Shutdown Error Amp 1.2V Reference VIN GND VOUT VIN GND VOUT RT9161/A COUT Electrolytic 10uF CIN 1uF VIN VOUT 1V I N GND VOUT TO-92 RT9161/A-††CZL

1 GND

RT9161/A-††CZT

DS9161/A-31 March 2007 www.richtek.com Absolute Maximum Ratings z Power Dissipation, PD @ TA = 25°C z Package Thermal Resistance (Note 4)

Electrical Characteristics

(TA = 25°C, C IN = 1 μF, COUT = 10μF, unless otherwise specified.) Parameter Symbol Test Conditions Min Typ Max Units Output Voltage Accuracy ΔVOUT I L = 1mA, VIN = 5V -2 -- +2 % Output Voltage Temperature Coefficient -- 50 150 PPM/°C Line Regulation ΔVLINE I L = 1mA, VIN= 4.5 ~ 12V -- 2 3 %V OUT Load Regulation (Note1) ΔVLOAD I L = 1mA ~ 300/500mA, VIN = 5V -- 1 30/50 mV RT9161 350 580 -- Current Limit (Note 2) RT9161A ILIM V IN= 5V, VOUT = 0V 500 900 -- mA Dropout Voltage (Note 3) VDROP I L = 300/500mA -- 450/750 600/1000 mV Standby Current ISTANDBY I L = 0, VIN = 12V -- 110 180 μA 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 V IN -VOUT, which is measured when V OUT is VOUT(NORMAL) − 100mV. Note 4. θJA is measured in the natural convection at T A = 25°C on a low effective single layer thermal conductivity test board of JEDEC 51-3 thermal measurement standard.

DS9161/A-31 March 2007www.richtek.com Quiescient Current vs. Temperature 0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 -30 0 30 60 90 120 Temperature Quiescient Current (mA) Typical Operating Characteristics Temperature Stability 2.4 2.6 2.8 3.2 3.4 -50 -25 0 25 50 75 100 125 Temperature Output Voltage (V) VOUT = 3.3V VOUT = 2.5V (°C) VIN = 5V (°C) Dropout Voltage (VIN-VOUT) 0.2 0.4 0.6 0.8 0 100 200 300 400 500 ILoad (mA) Dropout Voltage (V) VOUT = 3.3V 125°C 25°C Short Circuit Current 0.2 0.4 0.6 0.8 1.2 1.4 02468 1 0 Input/Output Differential (V) Short Circuit Current (A) 125°C 25°C T TT 1 > 2 > 100 -100 -200 Line Transient Response Time (100μS/Div) Output Voltage Deviation (mV) Input Voltage Deviation (V) COUT = 10μF Electrolytic IOUT = 0.1A VOUT = 3.3V TA = 25°C Time (100 μs/Div) T TT 1 > 2 > 100 -100 -200 Line Transient Response Time (100μS/Div) Output Voltage Deviation (mV) Input Voltage Deviation (V) COUT = 10μF Electrolytic IOUT = 0.1A VOUT = 2.5V TA = 25°C Time (100 μs/Div)

DS9161/A-31 March 2007 www.richtek.com PSRR -60 -50 -40 -30 -20 -10 10 100 1000 10000 100000 1000000 Frequency (Hz) PSRR (dB) CIN = 1uF COUT = 10uF Tantalum VIN = 5V VOUT = 2.5V TA = 25°C 10mA 100mA 1M100K10K1K T TT 1 > 2 > Time (100μS/Div) Load Transient Response CIN = 1μF COUT = 10μF Load Current (mA) 100 -50 -20 Output Voltage Deviation (mV) VIN = 5V VOUT = 3.3V TA = 25°C Time (100 μs/Div) T TT 1 > 2 > Time (100μS/Div) Load Transient Response CIN = 1μF COUT = 10μF Load Current (mA) 200 100 -100 150 100 -50 Output Voltage Deviation (mV) VIN = 5V VOUT = 3.3V TA = 25°C Time (100 μs/Div) T TT 1 > 2 > Time (100μS/Div) Load Transient Response CIN = 1μF COUT = 10μF Load Current (mA) 200 100 -100 150 100 -50 Output Voltage Deviation (mV) VIN = 5V VOUT = 2.5V TA = 25°C Time (100 μs/Div) T TT 1 > 2 > Time (100μS/Div) Load Transient Response CIN = 1μF COUT = 10μF Load Current (mA) 100 -50 -20 Output Voltage Deviation (mV) VIN = 5V VOUT = 2.5V TA = 25°C Time (100 μs/Div) PSRR -60 -50 -40 -30 -20 -10 10 100 1000 10000 100000 1000000 Frequency (Hz) PSRR (dB) CIN = 1uF COUT = 10uF Tantalum VIN = 5V VOUT = 3.3V TA = 25°C 10mA 100mA 1M100K10K1K

DS9161/A-31 March 2007 www.richtek.com Outline Dimension 3-Lead TO-92 Plastic Package L b e E D C A Dimensions In Millimeters Dimensions In Inches Symbol Min Max Min Max A 3.175 4.191 0.125 0.165 A1 1.143 1.372 0.045 0.054 b 0.406 0.533 0.016 0.021 C 0.406 0.533 0.016 0.021 D 4.445 5.207 0.175 0.205 D1 3.429 5.029 0.135 0.198 E 4.318 5.334 0.170 0.210 e 1.143 1.397 0.045 0.055 L 12.700 0.500

DS9161/A-31 March 2007www.richtek.com A b B D C e H L SOT-23-3 Surface Mount Package Dimensions In Millimeters Dimensions In Inches Symbol 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 0.508 0.014 0.020 C 2.591 2.997 0.102 0.118 D 2.692 3.099 0.106 0.122 e 1.803 2.007 0.071 0.079 H 0.080 0.254 0.003 0.010 L 0.300 0.610 0.012 0.024

DS9161/A-31 March 2007 www.richtek.com B bb1b A C e e D H A 3-Lead SOT-89 Surface Mount Package Dimensions In Millimeters Dimensions In Inches Symbol Min Max Min Max A 1.397 1.600 0.055 0.063 b 0.356 0.483 0.014 0.019 B 2.388 2.591 0.094 0.102 b1 0.406 0.533 0.016 0.021 C 3.937 4.242 0.155 0.167 C1 0.787 1.194 0.031 0.047 D 4.394 4.597 0.173 0.181 D1 1.397 1.753 0.055 0.069 e 1.448 1.549 0.057 0.061 H 0.356 0.432 0.014 0.017

DS9161/A-31 March 2007www.richtek.com 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 Dimensions In Millimeters Dimensions In Inches Symbol Min Max Min Max A 1.450 1.803 0.057 0.071 A1 0.020 0.100 0.0008 0.0047 b 0.610 0.787 0.024 0.031 B 3.302 3.708 0.130 0.146 C 6.706 7.290 0.264 0.287 D 6.299 6.706 0.248 0.264 D1 2.896 3.150 0.114 0.124 e 2.261 2.362 0.089 0.093 H 0.229 0.330 0.009 0.013 L 1.550 1.950 0.061 0.077 L1 0.800 1.100 0.009 0.013 3-Lead SOT-223 Surface Mount Package A b H B D C L e e