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| RT9162 300mA Low Dropout Positive Voltage Regulator General Description 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. 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. Features Low Dropout, Maximum 1.3V at 300mA 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 Applications 5V to 3.3V Linear Regulator Low Voltage Microcontroller, DSF, ..... etc. Power Supply Linear Regulator for LAN Card and CD-ROM Ordering Information RT9162Package Type ZL : TO-92 (L-Type) ZT : TO-92 (T-Type) X : SOT-89 XL : SOT-89 (L-Type) Operating Temperature Range P : Pb Free with Commercial Standard G : Green (Halogen Free with Commercial Standard) Output Voltage 33 : 3.3V 35 : 3.5V Pin Configurations (TOP VIEW) 3 2 1 VOUT GND VIN RT9162-33CZL RT9162-35CZL TO-92 3 2 1 VOUT VIN GND 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. 1 RT9162-33CZT RT9162-35CZT TO-92 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. 2 3 1 2 3 VOUT GND VIN GND VIN VOUT RT9162-33CX RT9162-35CX SOT-89 RT9162-33CXL RT9162-35CXL SOT-89 DS9162-16 March 2007 www.richtek.com 1 RT9162 Typical Application Circuit RT9162 VIN CIN 10uF VIN VOUT GND VOUT COUT 10uF + + Functional Pin Description Pin Name VOUT GND VIN Pin Function Output Voltage Ground Power Input Function Block Diagram VIN Q2 Buffer Amplifier Thermal Shutdown R4 Error Amplifier Q1 - Current Limiting Sensor R3 VOUT R1 VREF R2 www.richtek.com 2 + DS9162-16 March 2007 RT9162 Absolute Maximum Ratings Input Voltage ------------------------------------------------------------------------------------------------------------ 15V Power Dissipation, PD @ TA = 25C TO-92 --------------------------------------------------------------------------------------------------------------------- 0.625W SOT-89 ------------------------------------------------------------------------------------------------------------------- 0.571W Package Thermal Resistance (Note4) TO-92, JA --------------------------------------------------------------------------------------------------------------- 160C/W SOT-89, JA ------------------------------------------------------------------------------------------------------------- 175C/W Operating Junction Temperature Range -------------------------------------------------------------------------- -40C to 125C Storage Temperature Range ---------------------------------------------------------------------------------------- -65C to 150C Electrical Characteristics (VIN = 5.0V, TA = 25C, unless otherwise specified) Parameter Output Voltage Line Regulation Load Regulation Dropout Voltage Current Limit Quiescent Current Temperature Coefficient Temperature Stability RMS Output Noise (Note 3) (Note 1) (Note 1) (Note 1) (Note 2) RT9162-33 RT9162-35 Symbol VOUT VLINE Test Conditions Min 3.235 3.430 Typ 3.300 3.500 0.1 0.2 1.2 -4.5 0.005 0.5 0.003 Max 3.365 3.570 0.4 0.4 1.3 -8 ---- Units V % % V mA mA %/C % %/VOUT VIN = 5V-15V VOUT = 1% ---400 ----- VLOAD IL = 0 - 300mA VDROP ILIM IQ TC TS 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. JA is measured in the natural convection at T A = 25C 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 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 www.richtek.com 4 DS9162-16 March 2007 RT9162 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 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 DS9162-16 March 2007 www.richtek.com 5 |
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