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) 3 VOUT 2 GND 1 VIN Lead Plating System P : Pb Free G : Green (Halogen Free and Pb Free) RT9162-33xZL RT9162-35xZL TO-92 Output Voltage 33 : 3.3V 35 : 3.5V Note : 3 VOUT 2 VIN 1 GND Richtek products are : ` RoHS compliant and compatible with the current require- ` Suitable for use in SnPb or Pb-free soldering processes. RT9162-33xZT RT9162-35xZT TO-92 ments of IPC/JEDEC J-STD-020. Marking Information For marking information, contact our sales representative directly or through a Richtek distributor located in your area. 1 2 VOUT GND 3 VIN RT9162-33xX RT9162-35xX SOT-89 DS9162-19 April 2011 1 2 GND VIN 3 VOUT RT9162-33xXL RT9162-35xXL 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 DS9162-19 April 2011 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 (Note 1) 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 2) Symbol RT9162-33 RT9162-35 Test Conditions V OUT Line Regulation (Note 2) ΔVLINE Load Regulation (Note 2) ΔVLOAD IL = 0 - 300mA Dropout Voltage (Note 3) V DROP VIN = 5V–15V ΔVOUT = 1% Min Typ Max Unit 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 4) Note 1. 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. Note 2. Low duty cycle pulse testing with Kelvin connections required. Note 3. The dropout voltage is defined as VIN -VOUT, which is measured when VOUT is VOUT(NORMAL) − 100mV. Note 4. Bandwidth of 10 Hz to 10 kHz. DS9162-19 April 2011 www.richtek.com 3 RT9162 Outline Dimension A D E L b e C D1 A1 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 3-Lead TO-92 Plastic Package www.richtek.com 4 DS9162-19 April 2011 RT9162 D D1 A B C C1 e e H A b b1 b 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 3-Lead SOT-89 Surface Mount Package Richtek Technology Corporation Richtek Technology Corporation Headquarter Taipei Office (Marketing) 5F, No. 20, Taiyuen Street, Chupei City 5F, No. 95, Minchiuan Road, Hsintien City Hsinchu, Taiwan, R.O.C. Taipei County, Taiwan, R.O.C. Tel: (8863)5526789 Fax: (8863)5526611 Tel: (8862)86672399 Fax: (8862)86672377 Email: [email protected] Information that is provided by Richtek Technology Corporation is believed to be accurate and reliable. Richtek reserves the right to make any change in circuit design, specification or other related things if necessary without notice at any time. No third party intellectual property infringement of the applications should be guaranteed by users when integrating Richtek products into any application. No legal responsibility for any said applications is assumed by Richtek. DS9162-19 April 2011 www.richtek.com 5