RT9162 300mA Low Dropout Positive Voltage Regulator General Description Features The RT9162 is a positive low dropout regulator designed for applications requiring low dropout performance at full rated current. The device is available in fixed output voltages of 3.3V and 3.5V. The RT9162 provides excellent regulation over line, load, and temperature variations. z Low Dropout, Maximum 1.3V at 300mA z Fast Transient Response ± 2% Total Output Regulation 0.4% Line Regulation 0.4% Load Regulation SOT-89 and TO-92 Packages RoHS Compliant and 100% Lead (Pb)-Free The other features include low dropout performance at a maximum of 1.3V at 300mA, fast transient response, internal current limiting, and thermal shutdown protection of the output devices. The RT9162 is a three-terminal regulator compatible with industrial 78XX series and available in surface mount SOT-89 packages. Ordering Information RT9162- z z z z z Applications z z z 5V to 3.3V Linear Regulator Low Voltage Microcontroller, DSF, ..... etc. Power Supply Linear Regulator for LAN Card and CD-ROM Pin Configurations Package Type ZL : TO-92 (L-Type) ZT : TO-92 (T-Type) X : SOT-89 XL : SOT-89 (L-Type) (TOP VIEW) Operating Temperature Range P : Pb Free with Commercial Standard G : Green (Halogen Free with Commercial Standard) 3 VOUT 2 GND 1 VIN RT9162-33CZL RT9162-35CZL TO-92 Output Voltage 33 : 3.3V 35 : 3.5V Note : 3 VOUT 2 VIN 1 GND RT9162-33CZT RT9162-35CZT TO-92 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. 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. DS9162-16 March 2007 1 2 VOUT GND 3 VIN RT9162-33CX RT9162-35CX SOT-89 1 2 GND VIN 3 VOUT RT9162-33CXL RT9162-35CXL SOT-89 www.richtek.com 1 RT9162 Typical Application Circuit RT9162 CIN 10uF VIN VOUT GND VOUT + + VIN COUT 10uF Functional Pin Description Pin Name Pin Function VOUT Output Voltage GND Ground VIN Power Input Function Block Diagram VIN Q2 Buffer Amplifier Q1 Thermal Shutdown R4 + Error Amplifier - Current Limiting Sensor R3 VOUT R1 VREF R2 www.richtek.com 2 DS9162-16 March 2007 RT9162 Absolute Maximum Ratings z z z z z Input Voltage ------------------------------------------------------------------------------------------------------------ 15V Power Dissipation, PD @ TA = 25°C TO-92 --------------------------------------------------------------------------------------------------------------------- 0.625W SOT-89 ------------------------------------------------------------------------------------------------------------------- 0.571W Package Thermal Resistance (Note4) TO-92, θJA --------------------------------------------------------------------------------------------------------------- 160°C/W SOT-89, θJA ------------------------------------------------------------------------------------------------------------- 175°C/W Operating Junction Temperature Range -------------------------------------------------------------------------- −40°C to 125°C Storage Temperature Range ---------------------------------------------------------------------------------------- −65°C to 150°C Electrical Characteristics (VIN = 5.0V, TA = 25°C, unless otherwise specified) Parameter Output Voltage (Note 1) Symbol RT9162-33 RT9162-35 Line Regulation (Note 1) Test Conditions VOUT ΔVLINE VIN = 5V–15V Load Regulation (Note 1) ΔVLOAD IL = 0 - 300mA Dropout Voltage (Note 2) VDROP ΔVOUT = 1% Min Typ Max Units 3.235 3.300 3.365 3.430 3.500 3.570 -- 0.1 0.4 % -- 0.2 0.4 % -- 1.2 1.3 V 400 -- -- mA V Current Limit ILIM Quiescent Current IQ -- 4.5 8 mA Temperature Coefficient TC -- 0.005 -- %/°C Temperature Stability TS -- 0.5 -- % -- 0.003 -- %/VOUT RMS Output Noise (Note 3) Note 1. Low duty cycle pulse testing with Kelvin connections required. Note 2. The dropout voltage is defined as VIN -VOUT, which is measured when VOUT is VOUT(NORMAL) − 100mV. Note 3. Bandwidth of 10 Hz to 10 kHz. Note 4. θJA is measured in the natural convection at T A = 25°C on a low effective thermal conductivity test board of JEDEC 51-3 thermal measurement standard. DS9162-16 March 2007 www.richtek.com 3 RT9162 Outline Dimension A D E L b e C D1 A1 Symbol Dimensions In Millimeters Dimensions In Inches 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 3-Lead TO-92 Plastic Package www.richtek.com 4 DS9162-16 March 2007 RT9162 D D1 A B C C1 e e H A b Symbol b1 b Dimensions In Millimeters Dimensions In Inches 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 3-Lead SOT-89 Surface Mount 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] DS9162-16 March 2007 www.richtek.com 5