AIC1735 500mA Low Dropout Linear Regulator `FEATURES DESCRIPTION Low Dropout Voltage of 650mV at 500mA Output Current (3V Output Version). The AIC1735 is a 3-pin low dropout linear z Guaranteed 500mA Output Current. AIC1735 include zero base current loss, very z Low Ground Current at 65μA. low dropout voltage, and 2% accuracy output z 2% Accuracy Output Voltage of 1.8V/ 2.0V /2.5V /2.7V/ 3.0V/ 3.3V/ 3.5V/ 3.7V/ 3.8V/ 5.0V/ 5.2V. voltage. z Only needs 4.7μF Output Capacitor for Stability. substantially low when output current is z Current and Thermal Limiting. 100mA. z regulator. The superior characteristics of the Typical ground current remains approximately 65μA, for loading ranging from zero to maximum. Dropout voltage turns Built-in output current limiting and thermal limiting provide maximal protection to APPLICATIONS the AIC1735 against fault conditions. z CD-ROM Drivers. The AIC1735 is available in popular SOT-23, z LAN Cards. SOT-223, SOT-89 and TO-252 packages. z Microprocessor. z RAM Module. z Wireless Communication Systems. z Battery Powered Systems. TYPICAL APPLICATION CIRCUIT VOUT VIN AIC1735 VIN + 1μF CIN GND VOUT + 4.7μF COUT (Note1) Low Dropout Linear Regulator Analog Integrations Corporation Si-Soft Research Center DS-1735G-01 040606 3A1, No.1, Li-Hsin Rd. I , Science Park , Hsinchu 300, Taiwan , R.O.C. TEL: 886-3-5772500 FAX: 886-3-5772510 www.analog.com.tw 1 AIC1735 ORDERING INFORMATION AIC1735-XXXX XX PIN CONFIGURATION PACKING T YPE TR: TAPE & REEL TB: TUBE PACKAGE TYPE E: TO-252 U: SOT-23 X: SOT-89 Y: SOT-223 C: Commercial P: Lead Free Commercial G: Green Package OUTPUT 18: 20: 25: 27: 30: 33: 35: 37: 38: 50: 52: VOLTAGE 1.8V 2.0V 2.5V 2.7V 3.0V 3.3V 3.5V 3.7V 3.8V 5.0V 5.2V 3 SOT-23 TOP VIEW 1: GND 2: VOUT 3: VIN 1 TO-252 TOP VIEW 1: VOUT 2. GND 3. VIN 2 1 2 3 SOT-89 TOP VIEW 1: GND 2. VIN 3. VOUT 1 2 3 1 2 3 SOT-223 TOP VIEW 1: VOUT 2. GND 3. VIN Example: AIC1735-18CETR Æ 1.8V Version, in TO-252 Package & Tape & Reel Packing Type AIC1735-18PYTR Æ 1.8V Version, in Lead Free SOT-223 Package & Tape & Reel Packing Type AIC1735-18GYTR Æ 1.8V Version, in Green SOT-223 Package& Tape & Reel Packing Type 2 AIC1735 z z z SOT-23 MARKING Part No. CU PU GU Part No. CU PU GU AIC1735-18XU CE18 CE18P CE18G AIC1735-35XU CE35 CE35P CE35G AIC1735-20XU CE20 CE20P CE20G AIC1735-37XU CE37 CE37P CE37G AIC1735-25XU CE25 CE25P CE25G AIC1735-38XU CE38 CE38P CE38G AIC1735-27XU CE27 CE27P CE27G AIC1735-50XU CE50 CE50P CE50G AIC1735-30XU CE30 CE30P CE30G AIC1735-52XU CE52 CE52P CE52G AIC1735-33XU CE33 CE33P CE33G SOT-89 MARKING Part No. CX PX GX Part No. CX PX GX AIC1735-18XX CF18 CF18P CF18G AIC1735-35XX CF35 CF35P CF35G AIC1735-20XX CF20 CF20P CF20G AIC1735-37XX CF37 CF37P CF37G AIC1735-25XX CF25 CF25P CF25G AIC1735-38XX CF38 CF38P CF38G AIC1735-27XX CF27 CF27P CF27G AIC1735-50XX CF50 CF50P CF50G AIC1735-30XX CF30 CF30P CF30G AIC1735-52XX CF52 CF52P CF52G AIC1735-33XX CF33 CF33P CF33G SOT-223 MARKING Part No. CY PY GY Part No. CY PY GY AIC1735-18XY CC18 CC18P CC18G AIC1735-35XY CC35 CC35P CC35G AIC1735-20XY CC20 CC20P CC20G AIC1735-37XY CC37 CC37P CC37G AIC1735-25XY CC25 CC25P CC25G AIC1735-38XY CC38 CC38P CC38G AIC1735-27XY CC27 CC27P CC27G AIC1735-50XY CC50 CC50P CC50G AIC1735-30XY CC30 CC30P CC30G AIC1735-52XY CC52 CC52P CC52G AIC1735-33XY CC33 CC33P CC33G 3 AIC1735 ABSOLUTE MAXIMUM RATINGS Input Supply Voltage -0.3~12V Operating Temperature Range -40°C~ 85°C Maximum Junction Temperature 150°C Storage Temperature Range Lead Temperature (Soldering) 10 sec. Thermal Resistance Junction to Case -65°C~150°C 260°C SOT-23 Package 130°C/W TO-252 Package 12.5°C/W SOT-89 Package 100°C/W SOT-223 Package 15°C/W Thermal Resistance Junction to Ambient SOT-23 Package 180°C/W (Assume no Ambient Airflow, no Heatsink) TO-252 Package 100°C/W SOT-89 Package 160°C/W SOT-223 Package 130°C/W Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. TEST CIRCUIT Refer to the TYPICAL APPLICATION CIRCUIT 4 AIC1735 ELECTRICAL CHARACTERISTICS (TA=25°C, CIN=1μF, COUT=4.7μF, unless otherwise specified.) (Note2) PARAMETER Output Voltage Output Voltage Temperature Coefficiency Line Regulation Load Regulation (Note 4) Current Limit (Note 5) TEST CONDITIONS No Load AIC1735-52 AIC1735-50 AIC1735-38 AIC1735-37 AIC1735-35 AIC1735-33 AIC1735-30 AIC1735-27 AIC1735-25 AIC1735-20 AIC1735-18 VIN=5.5~12V VIN=5.5~12V VIN=4.7~12V VIN=4.7~12V VIN=4.7~12V VIN=4.7~12V VIN=4.0~12V VIN=4.0~12V VIN=4.0~12V VIN=4.0~12V VIN=4.0~12V MIN. TYP. MAX. UNIT 5.100 4.900 3.725 3.625 3.430 3.235 2.940 2.646 2.450 1.960 1.764 5.200 5.000 3.800 3.700 3.500 3.300 3.000 2.700 2.500 2.000 1.800 5.300 5.100 3.875 3.775 3.570 3.365 3.060 2.754 2.550 2.040 1.836 V (Note 3) IL=1mA, 1.4V≤VOUT≤3.2V 3.3V≤VOUT≤5.2V IL=0.1~500mA 1.4V≤VOUT≤3.9V 4.0V≤VOUT≤5.2V 50 VIN=4V~12V VIN=5.5V~12V 3 3 10 10 mV VIN=5V VIN=7V 10 20 30 50 mV VIN=7V, VOUT=0V Dropout Voltage (Note 6) IL=500mA Ground Current IO=0.1mA~IMAX 1.4V≤VOUT≤3.9V 4.0V≤VOUT≤5.2V PPM/°C 500 4.0V≤VOUT≤5.2V 3.0V≤VOUT≤3.9V 2.5V≤VOUT≤2.9V 2.0V≤VOUT≤2.4V 1.4V≤VOUT≤1.9V VIN=5~12V VIN=7~12V mA 510 650 780 1100 1400 710 850 980 1300 1600 mV 65 65 90 90 μA Note 1: To avoid output oscillation, aluminum electrolytic output capacitor is recommended and ceramic capacitor is not suggested. Note 2: Specifications are production tested at TA=25°C. Specifications over the -40°C to 85°C operating temperature range are assured by design, characterization and correlation with Statistical Quality Controls (SQC). Note 3: Guaranteed by design. Note 4: Regulation is measured at constant junction temperature, using pulse testing with a low ON time. Note 5: Current limit is measured by pulsing a short time. Note 6: Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV below the value measured with a 1V differential. 5 AIC1735 TYPICAL PERFORMANCE CHARACTERISTICS 500 600 AIC1735-52 AIC1735-33 500 T=25°C VDROP (mV) VDROP (mV) 400 300 200 T=25°C 400 300 200 100 100 0 0 50 100 150 200 250 300 350 400 450 500 0 0 ILOAD (mA) Fig. 1 VDROP (mV) 440 100 VDROP vs. ILOAD AIC1735-52 ILOAD=500mA 420 400 380 360 200 250 300 350 400 450 500 620 AIC1735-33 600 ILOAD=500mA 580 560 540 520 500 340 480 320 -40 -30 -20 -10 0 10 20 30 40 50 60 70 460 -40 80 -20 Temperature (°C) Fig. 3 Fig. 4 VDROP vs. Temperature 0 20 40 60 80 Temperature (°C) VDROP vs. Temperature 46.0 46.0 AIC1735-52 Ground Current (μA) 45.5 T=25°C 45.0 44.5 44.0 45.5 AIC1735-33 T=25°C 45.0 44.5 44.0 43.5 43.5 43.0 0 150 640 VDROP (mV) 460 50 ILOAD (mA) Fig. 2 VDROP vs. ILOAD 480 Ground Current (μA) 50 100 150 200 250 300 350 400 450 500 43.0 0 50 100 Fig. 5 Ground Current vs. ILOAD 150 200 250 300 350 400 450 500 ILOAD (mA) ILOAD (mA) Fig. 6 Ground Current vs. ILOAD 6 AIC1735 TYPICAL PERFORMANCE CHARACTERISTICS Ground Current (μA) Ground Current (μA) AIC1735-33 AIC1735-52 45 ILOAD = 500mA 44 43 42 45.5 ILOAD = 500mA 45.0 44.5 44.0 43.5 41 40 -40 -20 0 20 40 60 43.0 -40 80 -20 Fig. 7 0 20 40 60 80 Temperature (°C) Temperature (°C) Ground Current vs. Temperature Fig. 8 Ground Current vs. Temperature 100 700 AIC1735 690 AIC1735 -18 VIN=5V ; COUT=1uF VIN= 7V 680 10 670 660 VIN= 6V 650 ESR(O) Current Limit (mA) (Continued) 46.0 46 640 VIN= 5V 630 1 Stable Region 620 610 0.1 600 590 580 -40 -20 0 20 40 60 0.01 80 100 Temperature (°C) Fig. 9 200 300 400 500 IOUT(mA) Current Limit vs. Temperature Fig. 10 Region of Stable COUT ESR vs. Load Current 100 100 AIC1735 -18 VIN=5V ; COUT=10uF AIC1735 -18 VIN=5V ; COUT= 4.7uF 10 ESR(O) 10 ESR(O) 1 1 Stable Region Stable Region 0.1 0.1 0.01 0.01 100 200 300 400 500 IOUT(mA) Fig. 11 Region of Stable COUT ESR vs. Load Current 100 200 300 400 500 IOUT(mA) Fig. 12 Region of Stable COUT ESR vs. Load Current 7 AIC1735 BLOCK DIAGRAM VIN VOUT Current Limiting Error AMP + - + Thermal Shutdown 1.235V Reference GND PIN DESCRIPTIONS VOUT PIN - Output pin. GND PIN - Power GND. VIN PIN - Power Supply Input. APPLICATION INFORMATION INPUT-OUTPUT CAPACITORS Linear regulators require input and output capacitors to maintain stability. A 1uF aluminum electrolytic input capacitor with a 4.7uF aluminum electrolytic output capacitor is recommended. To avoid oscillation, it is recommended to follow the figures of “Region of Stable COUT ESR vs. Load Current” to choose proper capacitor specifications. POWER DISSIPATION The AIC1735 obtains thermal-limiting circuitry, which is designed to protect the device against overload condition. For continuous load condition, maximum rating of junction temperature must not be exceeded. It is important to pay more attention in thermal resistance. It includes junction to case, junction to ambient. The maximum power dissipation of AIC1735 depends on the thermal resistance of its case and circuit board, the temperature difference between the die junction and ambient air, and the rate of airflow. The rate of temperature rise is greatly affected by the mounting pad configuration on the PCB, the board material, and the ambient temperature. When the IC mounting with good thermal conductivity is used, the junction temperature will be low even when large power dissipation applies. The power dissipation across the device is P = IOUT (VIN-VOUT). The maximum power dissipation is: (T - TA ) PMAX = J-max Rθ JA Where TJ-max is the maximum allowable junction temperature (125°C), and TA is the ambient 8 AIC1735 temperature suitable in application. As a general rule, the lower temperature is, the better reliability of the device is. So the PCB mounting pad should provide maximum thermal conductivity to maintain low device temperature. GND pin performs a dual function for providing an electrical connection to ground and channeling heat away. Therefore, connecting the GND pin to ground with a large pad or ground plane would increase the power dissipation and reduce the device temperature. PHYSICAL DIMENSIONS (unit: mm) z SOT-23 D S Y M B O L A E E1 e SOT-23 MILLIMETERS MIN. MAX. A 0.95 1.45 A1 0.05 0.15 A2 0.90 1.30 b 0.30 0.50 c 0.08 0.22 D 2.80 3.00 E 2.60 3.00 E1 1.50 1.70 A e1 SEE VIEW B WITH PLATING e 0.95 BSC e1 1.90 BSC c A A2 b BASE METAL A1 SECTION A-A L 0.60 REF L1 0° 8° 0.25 θ 0.60 0.30 GAUGE PLANE SEATING PLANE θ L L1 VIEW B Note: 1.Refer to JEDEC MO-178. 2.Dimension D and E1 do not include mold flash, protrusions or gate burrs. Mold flash, protrusion or gate burrs shall not exceed 10 mil per side. 3.Controlling dimension is millimeter, converted inch dimensions are not necessarily exact. 9 AIC1735 z TO-252 A E S Y M B O L c2 H D L4 A A e SEE VIEW B TO-252-3L MILLIMETERS MIN. MAX. A 2.19 2.38 A1 0.00 0.13 b 0.64 0.89 b3 4.95 5.46 c 0.46 0.61 L3 b3 c2 0.46 0.89 D 5.33 6.22 E 6.35 6.73 e b 2.28 BSC H 9.40 L 1.40 10.41 c WITH PLATING L1 BASE METAL SECTION A-A θ GAUGE PLANE L2 0.89 2.03 L4 -- 1.02 θ 0° 8° A1 L L2 0.51 BSC L3 SEATING PLANE L1 1.78 2.67 REF VIEW B Note: 1.Refer to JEDEC TO-252AA and AB. 2.Dimension D and E do not include mold flash, protrusions or gate burrs. Mold flash, protrusion or gate burrs shall not exceed 6 mil per side. 3.Controlling dimension is millimeter, converted inch dimensions are not necessarily exact. 10 AIC1735 SOT-89 D A H E e e1 S Y M B O L C D1 L z SOT-89 MILLIMETERS MIN. MAX. A 1.40 1.60 B 0.44 0.56 B1 0.36 0.48 C 0.35 0.44 D 4.40 4.60 D1 1.50 1.83 E 2.29 e e1 B1 2.60 1.50 BSC 3.00 BSC H 3.94 4.25 L 0.89 1.20 B Note: 1.Refer to JEDEC TO-243AA. 2.Controlling dimension is millimeter, converted inch dimensions are not necessarily exact. 11 AIC1735 SOT-223 D S Y M B O L b2 SOT-223 MILLIMETERS MIN. MAX. A E E1 A A SEE VIEW B e e1 b 1.80 A1 0.02 0.10 A2 1.55 1.65 b 0.66 0.84 b2 2.90 3.10 c 0.23 0.33 D 6.30 6.70 E 6.70 7.30 E1 3.30 WITH PLATING c A A2 e BASE METAL SECTION A-A θ 3.70 2.30 BSC e1 L 4.60 BSC 0.90 0° 8° GAUGE PLANE SEATING PLANE VIEW B 0.25 L θ z Note: 1. Refer to JEDEC TO-261AA. 2. Dimension D and E1 are determined at the outermost extremes of the plastic body exclusive of mold flash, tie bar burrs, gate burrs, and interlead flash, but including any mismatch between the top and bottom of the plastic body. 3. Controlling dimension is millimeter, converted inch dimensions are not necessarily exact. Note: Information provided by AIC is believed to be accurate and reliable. However, we cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in an AIC product; nor for any infringement of patents or other rights of third parties that may result from its use. We reserve the right to change the circuitry and specifications without notice. Life Support Policy: AIC does not authorize any AIC product for use in life support devices and/or systems. Life support devices or systems are devices or systems which, (I) are intended for surgical implant into the body or (ii) support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 12