400mA CMOS LDO Regulator (Preliminary) CYT6167 Features Description The CYT6167 is an efficient linear voltage ¾ Typical 175mV dropout voltage at 150mA. regulator. It has extra low dropout voltage. At light ¾ Low Ground current at 65uA. (Typ.) loads the typical dropout voltage is 15mV, at full ¾ Guaranteed 400mA output over the full load the typical dropout voltage is 600mV. The output voltage accuracy is better than 2%. The CYT6167 has low ground current at 65uA, so it can help prolong battery life. The CYT6167 is specially designed for hand-held, battery-powered devices. operating temperature range. ¾ Extremely tight load and line regulation. ¾ Low temperature coefficient. ¾ Current and thermal limiting. ¾ No-load stability. ¾ Available in SOT-23-3L and TO-92 Packages. Applications ¾ CD/DVD-ROM, CD/RW ¾ Wireless LAN card, Keyboard, Mouse ¾ Battery Powered Equipments ¾ PCMCIA Card Ordering/Marking Information Package Ordering Information 3.3V CYT6167AHN 2.8V CYT6167BHN 2.5V CYT6167CHN 1.8V CYT6167DHN 1.5V CYT6167EHN 3.0V CYT6167FHN 3.3V CYT6167AHG 2.8V CYT6167BHG 2.5V CYT6167CHG 1.8V CYT6167DHG 1.5V CYT6167EHG 3.0V CYT6167FHG Marking Information CYT6167AHN YYWW CYT6167BHN YYWW CYT6167CHN YYWW CYT6167DHN YYWW CYT6167EHN YYWW CYT6167FHN YYWW CYT6167AHG YYWW CYT6167BHG YYWW CYT6167CHG YYWW CYT6167DHG YYWW CYT6167EHG YYWW CYT6167FHG YYWW YY: year code WW: week code. Preliminary and all contents are subject to change without prior notice. 1 400mA CMOS LDO Regulator (Preliminary) CYT6167 Ordering/Marking Information (Continued) Package Ordering Information Marking Information 3.3V CYT6167ALN 167AN_ 2.8V CYT6167BLN 167BN_ 2.5V CYT6167CLN 167CN_ 1.8V CYT6167DLN 16 7DN_ 1.5V CYT6167ELN 167EN_ next character is marked on top for 3.0V CYT6167FLN 16 7FN_ 2003, and underlined for 2004. The 3.3V CYT6167ALG 16 7AG_ naming pattern continues with 2.8V CYT6167BLG 16 7BG_ consecutive characters for later 2.5V CYT6167CLG 16 7CG_ years. 1.8V CYT6167DLG 16 7DG_ 1.5V CYT167ELG 3.0V CYT6167FLG 16 7EG_ Starting with 1, a bar on top of 1 is for production year 2001, and underlined 1 is for year 2002. The The last character is the week code. (A-Z: 1-26, a-z: 27-52) 16 7FG_ Preliminary and all contents are subject to change without prior notice. 2 400mA CMOS LDO Regulator (Preliminary) Absolute Maximum Ratings(1) CYT6167 Operating Ratings(2) Supply Input Voltage (VIN) ..……...…… -0.7V to +6V Power Dissipation (PD) ……….. Internally Limited (3) Junction Temperature (TJ) …….….... 0°C to +125°C Supply Input Voltage (VIN) ……...….. +2.8V to +6V Junction Temperature (TJ) …….….. 0°C to +125°C Package Thermal Resistance Lead Temperature (soldering, 5 sec.) …....…. 260°C 160°C/W (TO-92) Storage Temperature (TS) ……….. -40°C to +150°C 250°C/W (SOT-23-3L) Electrical Characteristics VIN = VOUT + 1.0V; CIN = 2.2µF; COUT = 2.2µF; IOUT = 10mA; TJ = 25°C, unless otherwise specified. Symbol VOUT ∆VOUT /∆T ∆VOUT / VOUT ∆VOUT / VOUT VIN - VOUT TPROTECTION Parameter Min Typ Max CYT6167-1.5V 1.470 1.5 1.530 CYT6167-1.8V 1.764 1.8 1.836 Output Voltage CYT6167-2.5V 2.450 2.5 2.550 Accuracy CYT6167-2.8V 2.744 2.8 2.856 CYT6167-3.0V 2.940 3.0 3.060 CYT6167-3.3V 3.234 3.3 3.366 -- 0.025 -- mV/℃ -- 1.0 -- %/V -- 1.0 -- % IOUT =10mA -- 15 -- IOUT =150mA -- 175 -- IOUT =300mA -- 380 -- IOUT =400mA -- 600 -- Thermal Protection Temperature -- 150 -- ℃ Protection Hysterisys -- 20 -- ℃ Output Voltage Temperature Coefficient Line Regulation Load Regulation(5 Dropout Voltage(6) Thermal Protection Conditions Note 4 VIN = 4.3V to 6V, IOUT = 10mA (VOUT = 3.3V) VIN = 5V, IOUT =10mA to 400mA (VOUT = 3.3V) Units V mV PSRR Ripple Rejection f =120Hz -- 59 -- dB IGROUND Ground Current IOUT =10mA -- 65 -- uA ILIMIT Current Limit VOUT =0V -- 600 -- mA Preliminary and all contents are subject to change without prior notice. 3 400mA CMOS LDO Regulator (Preliminary) CYT6167 Note 1: Exceeding the absolute maximum rating may damage the device. Note 2: The device is not guaranteed to function outside its operating rating. Note 3: The maximum allowable power dissipation at any TA (ambient temperature) is calculated using: PD(MAX) = (TJ(MAX) - TA)/θJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. See Table 1 and the “Thermal Considerations” section for details. Note 4: Output voltage temperature coefficient is the worst-case voltage change divided by the total temperature range. Note 5: Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the load range from 100µA to 400mA. Changes in output voltage due to heating effects are covered by the thermal regulation specification. Note 6: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V differential. Typical Application Preliminary and all contents are subject to change without prior notice. 4 CYT6167 Line Regulation (VOUT = 3.3V) Load Regulation (VOUT = 3.3V) (VIN = 4.3V to 6V, IOUT = 10mA) (VIN = 5V, IOUT = 10mA to 500mA) 3.6000 3.600 3.5000 3.500 3.4000 3.400 VOUT (V) VOUT (V) 400mA CMOS LDO Regulator (Preliminary) 3.3000 3.300 3.200 3.2000 3.100 3.1000 3.000 3.0000 4.2 4.7 5.2 0 5.7 100 200 300 400 500 400 500 IOUT (mA) VIN (V) Output Voltage vs Temperature IQ vs IOUT (VOUT = 3.3V) (VIN = 5V, IOUT = 10mA) (VIN = 5V, IOUT = 10mA to 500mA) 160 3.330 140 3.320 120 100 IQ (uA) VOUT (V) 3.310 3.300 80 60 3.290 40 3.280 20 3.270 0 0 20 40 60 80 100 120 0 100 200 300 IOUT (mA) Temperature (C) Transient Response (VOUT = 3.3V) PSRR (VOUT = 3.3) (IOUT = 10mA to 40mA) (VIN = 5V, VPP = 1V) 70 60 PSRR (dB) 50 40 30 20 10 0 100 1000 10000 Frequency (Hz) Preliminary and all contents are subject to change without prior notice. 5 400mA CMOS LDO Regulator (Preliminary) Application Hints CYT6167 Thermal Consideration Like any Low dropout regulator, CYT6167 requires It is important that the thermal limit of the package external capacitors to ensure stability. The external should not be exceeded. The CYT6167 has built-in capacitors must be carefully selected to ensure the thermal protection. When the thermal limit is performances. exceeded, the IC will enter protection, and the VOUT will be reset to zero. The power dissipation for a given application can be calculated as follows: Input Capacitor: An Input Capacitor of at least 2.2uF is required. Ceramic or Tantalum can be used. The value can The Power Dissipation (PD) is be increased without upper limit. PD = IOUT * [VIN – VOUT] Output Capacitor: The thermal limit of the package is then limited to An Output Capacitor is required for look stability. It PD(MAX) = [TJ – TA]/θJA where TJ is the junction must be located no more than 1cm away from the temperature, TA is ambient temperature, and θJA is VOUT pin, and connected directly between VOUT and around 250°C/W for CYT6167. CYT6167 is designed GND pins. The minimum value is 2.2uF but once to enter thermal protection at 150°C. For example, if again its value can be increased without limit. TA is 25°C then the max PD is limited to about 0.5W. In other words, if IOUT(MAX) = 400mA, then [VIN – VOUT] can not exceed 1.25V. Preliminary and all contents are subject to change without prior notice. 6 400mA CMOS LDO Regulator (Preliminary) CYT6167 OUTLINE DRAWING SOT-23-3L (SC-59) C J H B D A E G F K L N DIM A B C D E F G H J K L DIMENSIONS INCHES MM MIN MAX MIN MAX 0.110 0.047 0.083 0.035 0.070 0.018 0.015 0.0005 0.034 0.003 - 0.120 0.055 0.104 0.040 0.080 0.024 0.020 0.004 0.040 0.007 0.027 2.80 1.20 2.10 0.89 1.78 0.45 0.37 0.013 0.887 0.085 - 3.04 1.40 2.64 1.03 2.05 0.60 0.51 0.10 1.02 0.18 0.69 OUTLINE DRAWING TO-92 A DIMN B D E G F H K J A B E F G H J K DIMENSIONS INCHES MM MIN MAX MIN MAX 0.175 0.170 0.500 0.016 0.045 0.095 0.080 0.125 0.205 0.210 0.610 0.021 0.055 0.105 0.105 0.165 4.445 4.318 12.70 0.407 1.143 2.413 2.032 3.175 Preliminary and all contents are subject to change without prior notice. 7 5.207 5.334 15.50 0.533 1.397 2.667 2.667 4.191