RT9162 300mA Low Dropout Positive Voltage Regulator General Description Features The RT9162 is a positive low dropout regulator z Low Dropout, Maximum 1.3V at 300mA designed for applications requiring low dropout z Fast Transient Response performance at full rated current. The device is z available in fixed output voltages of 3.3V and 3.5V. z ±2% Total Output Regulation 0.4% Line Regulation The RT9162 provides excellent regulation over line, z 0.4% Load Regulation load, and temperature variations. z SOT-89 and TO-92 Packages The other features include low dropout performance Applications at a maximum of 1.3V at 300mA, fast transient z 5V to 3.3V Linear Regulator response, internal current limiting, and thermal z Low Voltage Microcontroller, DSF, … etc. Power shutdown protection of the output devices. The RT9162 is a three-terminal regulators compatible Supply z Linear Regulator for LAN Card and CD-ROM with industrial 78XX series and available in surface Pin Configurations mount SOT-89 packages. Ordering Information Part Number RT9162- RT9162-33CZL Pin Configurations 1. VIN 2. GND 3. VOUT Package type ZL : TO-92 L type ZT : TO-92 T type X : SOT-89 RT9162-35CZL Operating temperature range C: Commercial standard RT9162-33CZT Output voltage (Plastic TO-92) (Plastic TO-92) 1 2 3 1. GND 2. VIN 3. VOUT RT9162-35CZT 33 : 3.3V 1 2 3 35 : 3.5V RT9162-33CX Marking Infromation Part Number Marking RT9162-33CZT RTA4 RT9162-33CZL RTA2 RT9162-33CX A0 RT9162-35CZT RTA5 RT9162-35CX RTA3 RT9162-35CX A1 RT9162-35CX (Plastic SOT-89) 1 2 3 Typical Application Circuit VIN RT9162-33/35 VOUT VIN GND + C1 10µF DS9162-07 June 2000 1. VOUT 2. GND 3. VIN TOP VIEW VOUT + C2 10µF www.richtek-ic.com.tw 1 RT9162 Pin Description Pin Name Pin Function VOUT Output Pin GND Power Ground Pin VIN Positive Power Input Pin Function Block Diagram VIN Buffer Amplifier VREF - + Error Amplifier Q2 Thermal Shutdown Current Limiting Sensor Q1 R4 R3 VOUT R1 R2 www.richtek-ic.com.tw 2 DS9162-07 June 2000 RT9162 Absolute Maximum Ratings z Input Voltage VIN 15V z Power Dissipation TO-92 0.6W SOT-89 0.5W z Operating Junction Temperature Range −40°C to 125°C z Storage Temperature Range −50°C to 150°C Electrical Characteristics (VIN=5.0V, TA=25°C, unless otherwise specified ) Parameter Output Voltage (1) Line Regulation Symbol Min Typ Max RT9162-33 3.235 3.300 3.365 RT9162-35 3.430 3.500 3.570 VIN = 5V–15V -- 0.1 0.4 % (1) Test Conditions Units V Load Regulation (1) IL = 0 - 300mA -- 0.2 0.4 % Dropout Voltage (2) ∆VOUT = 1% -- 1.2 1.3 V Current Limit -- 400 -- -- mA Quiescent Current -- -- 4.5 8 mA Temperature Coefficient -- -- 0.005 -- %/°C Temperature Stability -- -- 0.5 -- % (3) -- -- 0.003 -- %/VOUT RMS Output Noise Notes: (1) Low duty cycle pulse testing with Kelvin connections required. (2) Dropout voltage is defined as the input to output differential at which the output voltage drops 1% below the value measured with a 2V differential. (3) Bandwidth of 10 Hz to 10 kHz. DS9162-07 June 2000 www.richtek-ic.com.tw 3 RT9162 Package Information A D D1 C E HE A1 e e 8 º(x2) A b Symbols b b1 Dimensions In Millimeters Dimensions In Inches Min Typ Max Min Typ Max A 1.40 1.50 1.60 0.055 0.059 0.063 A1 0.90 1.00 1.10 0.035 0.039 0.043 b 0.36 0.42 0.48 0.014 0.016 0.018 b1 0.41 0.42 0.53 0.016 0.018 0.020 C 0.38 0.40 0.43 0.014 0.015 0.017 D 4.20 4.50 4.60 0.173 0.177 0.181 D1 1.40 1.60 1.75 0.055 0.062 0.069 HE -- -- 4.25 -- -- 0.167 E 2.40 2.50 2.60 0.094 0.098 0.102 e 1.45 1.50 1.55 0.057 0.059 0.061 3-Lead SOT-89 Surface Mount www.richtek-ic.com.tw 4 DS9162-07 June 2000 RT9162 D A ∅0.060 (Millimeter) E d E1 e C b e D1 A1 Symbols Dimensions In Millimeters Dimensions In Inches Min Typ Max Min Typ Max A 3.48 3.56 3.61 0.137 0.140 0.142 A1 -- 1.30 -- -- 0.051 -- C -- 0.38 -- -- 0.015 -- D 4.19 4.45 4.70 0.165 0.175 0.185 D1 -- 4.29 -- -- 0.169 -- E 3.99 4.24 4.50 0.157 0.167 0.177 E1 14.00 -- -- 0.551 -- -- b -- 0.38 -- -- 0.015 -- e -- 1.27 -- -- 0.050 -- δ -- 5º -- -- 5º -- 3-Lead TO-92 Package DS9162-07 June 2000 www.richtek-ic.com.tw 5 RT9162 RichTek Technology Corp. RichTek Technology Corp. Headquarters Taipei Office (Marketing) 6F, No. 35, Hsintai Road, Chupei City 4F-1, No. 127, Lane 235, Paochiao Road, Hsintien City Hsinchu, Taiwan, R.O.C. Taipei County, Taiwan, R.O.C. Tel: (8863)5510047 Fax: (8863)5537749 Tel: (8862)89191466 Fax: (8862)89191465 Email: [email protected] www.richtek-ic.com.tw 6 DS9162-07 June 2000