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| 400mA CMOS LDO Regulator (Preliminary) Description The CYT6167 is an efficient linear voltage regulator. It has extra low dropout voltage. At light loads the typical dropout voltage is 15mV, at 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. CYT6167 Features Typical 175mV dropout voltage at 150mA. Low Ground current at 65uA. (Typ.) Guaranteed 400mA output over the full operating temperature range. Extremely tight load and line regulation. Low temperature coefficient. Current and thermal limiting. No-load stability. Available in SOT-23-3L and TO-92 Packages. Applications CD/DVD-ROM, CD/RW Wireless LAN card, Keyboard, Mouse Battery Powered Equipments PCMCIA Card Ordering/Marking Information Package Ordering Information 3.3V 2.8V 2.5V 1.8V 1.5V 3.0V 3.3V 2.8V 2.5V 1.8V 1.5V 3.0V CYT6167AHN CYT6167BHN CYT6167CHN CYT6167DHN CYT6167EHN CYT6167FHN CYT6167AHG CYT6167BHG CYT6167CHG CYT6167DHG CYT6167EHG 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) Ordering/Marking Information (Continued) Package Ordering Information 3.3V 2.8V 2.5V 1.8V 1.5V 3.0V 3.3V 2.8V 2.5V 1.8V 1.5V 3.0V CYT6167ALN CYT6167BLN CYT6167CLN CYT6167DLN CYT6167ELN CYT6167FLN CYT6167ALG CYT6167BLG CYT6167CLG CYT6167DLG CYT167ELG CYT6167FLG 167AN_ 167BN_ 167CN_ 16 7DN_ 167EN_ 16 7FN_ 16 7AG_ 16 7BG_ 16 7CG_ 16 7DG_ 16 7EG_ 16 7FG_ Marking Information CYT6167 Starting with 1, a bar on top of 1 is for production year 2001, and underlined 1 is for year 2002. The next character is marked on top for 2003, and underlined for 2004. The naming pattern continues with consecutive characters for later years. The last character is the week code. (A-Z: 1-26, a-z: 27-52) Preliminary and all contents are subject to change without prior notice. 2 400mA CMOS LDO Regulator (Preliminary) Absolute Maximum Ratings(1) Supply Input Voltage (VIN) ................. -0.7V to +6V Power Dissipation (PD) ........... Internally Limited (3) CYT6167 Operating Ratings(2) Supply Input Voltage (VIN) .............. +2.8V to +6V Junction Temperature (TJ) ............ 0C to +125C Package Thermal Resistance 160C/W (TO-92) 250C/W (SOT-23-3L) Junction Temperature (TJ) .............. 0C to +125C Lead Temperature (soldering, 5 sec.) ........... 260C Storage Temperature (TS) ........... -40C to +150C Electrical Characteristics VIN = VOUT + 1.0V; CIN = 2.2F; COUT = 2.2F; IOUT = 10mA; TJ = 25C, unless otherwise specified. Symbol Parameter Conditions CYT6167-1.5V CYT6167-1.8V VOUT Output Voltage Accuracy CYT6167-2.5V CYT6167-2.8V CYT6167-3.0V CYT6167-3.3V VOUT /T Output Voltage Temperature Coefficient Line Regulation Note 4 VIN = 4.3V to 6V, IOUT = 10mA (VOUT = 3.3V) VIN = 5V, IOUT =10mA to 400mA (VOUT = 3.3V) IOUT =10mA VIN - VOUT Dropout Voltage(6) IOUT =150mA IOUT =300mA IOUT =400mA TPROTECTION PSRR IGROUND ILIMIT Thermal Protection Ripple Rejection Ground Current Current Limit Thermal Protection Temperature Protection Hysterisys f =120Hz IOUT =10mA VOUT =0V Min 1.470 1.764 2.450 2.744 2.940 3.234 -Typ 1.5 1.8 2.5 2.8 3.0 3.3 0.025 Max 1.530 1.836 2.550 2.856 3.060 3.366 -mV/ V Units VOUT / VOUT -- 1.0 -- %/V VOUT / VOUT Load Regulation(5 ----------- 1.0 15 175 380 600 150 20 59 65 600 ----------- % mV dB uA mA Preliminary and all contents are subject to change without prior notice. 3 400mA CMOS LDO Regulator (Preliminary) Note 1: Exceeding the absolute maximum rating may damage the device. Note 2: The device is not guaranteed to function outside its operating rating. CYT6167 Note 3: The maximum allowable power dissipation at any TA (ambient temperature) is calculated using: PD(MAX) = (TJ(MAX) - TA)/JA. 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 100A 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 400mA CMOS LDO Regulator (Preliminary) Line Regulation (VOUT = 3.3V) (VIN = 4.3V to 6V, IOUT = 10mA) CYT6167 (VIN = 5V, IOUT = 10mA to 500mA) Load Regulation (VOUT = 3.3V) 3.6000 3.600 3.500 3.400 VOUT (V) 3.5000 3.4000 VOUT (V) 3.3000 3.300 3.200 3.100 3.000 3.2000 3.1000 3.0000 4.2 4.7 5.2 VIN (V) 5.7 0 100 200 IOUT (mA) 300 400 500 Output Voltage vs Temperature (VIN = 5V, IOUT = 10mA) IQ vs IOUT (VOUT = 3.3V) (VIN = 5V, IOUT = 10mA to 500mA) 3.330 3.320 3.310 VOUT (V) 160 140 120 100 IQ (uA) 80 60 40 3.300 3.290 3.280 3.270 0 20 40 60 Temperature (C) 20 0 80 100 120 0 100 200 300 IOUT (mA) 400 500 PSRR (VOUT = 3.3) (VIN = 5V, VPP = 1V) Transient Response (VOUT = 3.3V) (IOUT = 10mA to 40mA) 70 60 50 PSRR (dB) 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 external capacitors to ensure stability. The external capacitors must be carefully selected to ensure the performances. CYT6167 Thermal Consideration should not be exceeded. The CYT6167 has built-in thermal protection. When the thermal limit is 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: The Power Dissipation (PD) is PD = IOUT * [VIN - VOUT] The thermal limit of the package is then limited to PD(MAX) = [TJ - TA]/JA where TJ is the junction temperature, TA is ambient temperature, and JA is around 250C/W for CYT6167. CYT6167 is designed to enter thermal protection at 150C. For example, if TA is 25C 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. Like any Low dropout regulator, CYT6167 requires It is important that the thermal limit of the package Input Capacitor: An Input Capacitor of at least 2.2uF is required. Ceramic or Tantalum can be used. The value can be increased without upper limit. Output Capacitor: An Output Capacitor is required for look stability. It must be located no more than 1cm away from the VOUT pin, and connected directly between VOUT and GND pins. The minimum value is 2.2uF but once again its value can be increased without limit. Preliminary and all contents are subject to change without prior notice. 6 400mA CMOS LDO Regulator (Preliminary) OUTLINE DRAWING SOT-23-3L (SC-59) C J B H CYT6167 DIM A B C D E F G H J K L N 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 D A E F G K L OUTLINE DRAWING TO-92 A B D DIMN 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 5.207 5.334 15.50 0.533 1.397 2.667 2.667 4.191 E G F H K J Preliminary and all contents are subject to change without prior notice. 7 |
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