Advanced Power Electronics Corp. APE8970/A 1.2A HIGH OUTPUT CURRENT LDO REGULATOR FEATURES DESCRIPTION The APE8970/A is a low noise, high output current, low quiescent current and low dropout linear regulator. The Device includes pass element, error amplifier, band-gap, current-limit and thermal shutdown circuitry. The output current is up to 1.2A. The characteristics of low dropout voltage and less quiescent current make it good for some critical current application, for example, some battery powered devices. The typical quiescent current is approximately 50µA. Due to internal flexible design, result in extensively fixed output voltage versions form 1.2V to 5V per 0.1V steps. Built-in current-limit, Short current protection and thermal-shutdown functions prevent any fault condition from IC damage. Input Voltage Range : 2.6V~5.5V Dropout Voltage is 380mV at 1A Output Current Guaranteed 1.2A Output Current Low Quiescent Current is 50µA (typ.) Fixed Output Voltage is form 1.2 V to 5V by 0.1V Steps. Fast Transient Response Current Limit and Thermal Shutdown Protection Short Circuit Current Fold-back Available in the 3-Pin Pb-Free SOT-223, TO-263 and TO-252 Packages TYPICAL APPLICATION APE8970/A VIN VIN VOUT VOUT GND CIN 2.2uF COUT 2.2uF ORDERING/PACKAGE INFORMATION APE8970XX-XX Pin Define Package Output Voltage Refer Pin Assignment K : SOT-223 H : TO-252 S : TO-263 12 : 1.2V 13 : 1.3V 50 : 5.0V APE8970 APE8970A APE8970 APE8970A APE8970 Tab is GND Tab is VOUT Tab is GND Tab is VOUT Tab is GND TOP VIEW TOP VIEW ( Top View ) ( Top View ) TO-252 TO-252 TO-263 1 2 TO-263 3 GND VIN ( Top View ) VOUT 1 2 3 1 3 1 2 1 2 3 Data and specifications subject to change without notice VIN ( Top View ) SOT-223 1 2 3 GND VOUT VIN VOUT GND VIN Tab is VOUT 3 VIN GND VOUT VOUT GND 2 SOT-223 APE8970A VOUT GND VIN 1 200905151 Advanced Power Electronics Corp. APE8970/A ABSOLUTE MAXIMUM RATINGS (at TA=25°C) VIN Pin Voltage(VIN) --------------------------------------- GND - 0.3V to GND + 6V Output Voltage(VOUT) -------------------------------------- GND - 0.3V to VIN + 0.3V Power Dissipation(PD) SOT-223 1.3W TO-252 2.2W TO-263 4W Storage Temperature Range(TST) --------------------- -40°C to +150°C Junction Temperature Range(T J) ---------------------- -40°C To 125°C Operating Temperature Range (T OP) ------------------ -40°C to +85°C Thermal Resistance from Junction to Case(Rth JC) SOT-223 15°C/W TO-252 10°C/W TO-263 3.5°C/W Thermal Resistance from Junction to Ambient(RthJA) SOT-223 75°C/W TO-252 45°C/W TO-263 25°C/W Note: RthJA is measured with the PCB copper area of approximately 1 in2(Multi-layer). That need connect to tap pin. ELECTRICAL SPECIFICATIONS (TA=25°C unless otherwise specified) Parameter Input Voltage SYM TEST CONDITION MIN TYP MAX UNITS (Note1) 2.6 - 5.5 V -2 - 2 VIN VIN=VOUT+0.1V to 6V Output Voltage Accuracy (Note1) ∆VOUT VOUT≧2.5V, IOUT=1mA % VIN=2.6V to 6V 2.5V＞VOUT≧1.2V, IOUT=1mA Quiescent Current Dropout Voltage IQ VDROP IOUT =0mA, VIN=5V IOUT=1.0A ILIMIT Short Circuit Current Ishort Load Regulation (Note 3) Ripple Rejection Temperature Shutdown Temperature Shutdown Hysterisis - 3 - 50 - VOUT=1.2V - 1.3 1.5 VOUT=1.5V - 1.1 1.4 VOUT=1.8V - 0.8 1.1 VOUT=2.5V - 0.57 0.7 VOUT=3.3V Current Limit (Note 2) -3 µA V - 0.38 0.6 1.3 1.5 - A Output Voltage < 0.375 x VOUT 2.0V > VOUT IOUT =10m~1.2A 2.0V < VOUT - 600 - mA - 10 20 mV - 0.5 1 % F=120Hz - 65 - F=1KHz - 55 - TS - 140 - °C TSH - 30 - °C ∆VLOAD PSRR CIN=2.2µF,CO=2.2uF, IOUT =10mA dB Note 1. Minimum VIN voltage is defined by output adds a dropout voltage. Note 2. Current limit is measured at constant junction temperature by using pulsed testing with a low ON time. Note 3. Regulation is measured at constant junction temperature by using pulsed testing with a low ON time. 2 Advanced Power Electronics Corp. APE8970/A PIN DESCRIPTIONS PIN SYMBOL VIN PIN DESCRIPTION Input voltage GND Ground VOUT Output Voltage BLOCK DIAGRAM VIN VOUT Current Limit - + Error Amp Enable Bandgap Thermal Shutdown GND FUNCTION PIN DESCRIPTION A minimum of 2.2µF capacitor must be connected from VOUT to ground to insure stability. Typically a large storage capacitor is connected from VIN to ground to ensure that the input voltage does not sag below the minimum dropout voltage during the load transient response. This pin must always be dropout voltage higher than VOUT in order for the device to regulate properly. APPLICATION INFORMATION Like any low-dropout regulator, the APE8970/A requires input and output decoupling capacitors. The device is specifically designed for portable applications requiring minimum board space and smallest components. These capacitors must be correctly selected for good performance (see Capacitor Characteristics Section). Please note that linear regulators with a low dropout voltage have high internal loop gains which require care in guarding against oscillation caused by insufficient decoupling capacitance. Capacitor Selection Normally, use a 2.2µF capacitor on the input and a 2.2µF capacitor on the output of the APE8970/A. Larger input capacitor values and lower ESR (X5R, X7R) provide better supply-noise rejection and transient response. A higher- value output capacitor (4.7µF) may be necessary if large, fast transients are anticipated and the device is located several inches from the power source. Input-Output (Dropout) Voltage A regulator's minimum input-to-output voltage differential (dropout voltage) determines the lowest usable supply voltage. In battery-powered systems, this determines the useful end-of-life battery voltage. Because the device uses a PMOS, its dropout voltage is a function of drain-to source on-resistance, RDS (ON), multiplied by the load current: VDROPOUT = VIN -VOUT = RDS (ON) x IOUT 3 Advanced Power Electronics Corp. APE8970/A Current Limit and Short-Circuit Protection The APE8970/A used a current sense-resistor to monitor the output current. A portion of the PMOS output transistor’s current is mirrored to a resistor such that the voltage across this resistor is proportional to the output current. Once the output current exceeds limit threshold, APE8970/A would be protected with a limited output current. Further more, when the output is short to ground, the output current would be folded-back to a less limit. Thermal Considerations The APE8970/A series can deliver a current of up to 1.2A over the full operating junction temperature range. However, the maximum output current must be dated at higher ambient temperature to ensure the junction temperature does not exceed 125°C. With all possible conditions, the junction temperature must be within the range specified under operating conditions. Power dissipation can be calculated based on the output current and the voltage drop across regulator. PD = (VIN - VOUT) IOUT The final operating junction temperature for any set of conditions can be estimated by the following thermal equation: PD (MAX) = (TJ (MAX) - TA) / RthJA Where TJ (MAX) is the maximum junction temperature of the die (125° C) and TA is the maximum ambient temperature. The junction to ambient thermal resistance (θJA) for SOT-223 package at recommended minimum footprint is 75°C/W (please refer Maximum rating table). PCB Layout An input capacitance of ~2.2µF is required between the APE8970/A input pin and ground (the amount of the capacitance may be increased without limit), this capacitor must be located a distance of not more than 1cm from the input and return to a clean analog ground. Input capacitor can filter out the input voltage spike caused by the surge current due to the inductive effect of the package pin and the printed circuit board’s routing wire. Otherwise, the actual voltage at the VIN pin may exceed the absolute maximum rating. The output capacitor also must be located a distance of not more than 1cm from output to a clean analog ground. Because it can filter out the output spike caused by the surge current due to the inductive effect of the package pin and the printed circuit board’s routing wire. 4 Advanced Power Electronics Corp. APE8970/A TYPICAL PERFORMANCE CHARACTERISTICS IOUT VS VOUT VOUT (V) VOUT (V) VIN VS VOUT 1.220 1.216 1.212 1.208 1.204 1.200 1.196 1.192 1.188 1.184 1.180 IOUT=10mA APE8970K-12 2.5 3 3.5 4 4.5 5 1.230 1.225 1.220 1.215 1.210 1.205 1.200 1.195 1.190 1.185 1.180 1.175 1.170 VIN=3.3V APE8970K-12 0 5.5 0.2 0.4 VIN (V) VOUT (V) Dropout Voltage(V) APE8970K-12 APE8970K-15 APE8970K-25 APE8970K-33 0 0.2 0.4 0.6 0.8 IOUT (A) Power ON 0.8 1 1.2 Temperaute VS VOUT IOUT VS Dropout Voltage 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0.6 IOUT (A) 1 1.2 1.25 1.24 1.23 1.22 1.21 1.20 1.19 1.18 1.17 1.16 1.15 VIN=3.3V IOUT=1mA APE8970K-12 -40 -25 0 25 50 75 100 125 Temperature(℃) Load Transient 5 Advanced Power Electronics Corp. APE8970/A PACKAGE OUTLINE (1) SOT-223 3.3 1.9 D B1 6.4 H E 1.6 K e e1 2.3 1.2 B Symbol A A1 B B1 C D E H L K e e1 c A1 A Land Pattern Recommendation (Unit: mm) L Dimensions In Millimeters Seating Plane Dimensions In Inches Min. Nom. Max. Min. Nom. Max. 1.50 0.02 0.60 2.90 0.28 6.30 3.30 6.70 0.91 1.50 1.65 0.05 0.70 0.30 6.50 3.50 7.00 1.00 1.75 2.3 Basic 4.6 Basic 1.80 0.08 0.80 3.15 0.32 6.70 3.70 7.30 1.10 2.00 0.059 0.001 0.024 0.114 0.011 0.248 0.130 0.264 0.036 0.059 0.065 0.002 0.028 0.012 0.256 0.138 0.276 0.039 0.069 0.091 Basic 0.181 Basic 0.071 0.003 0.031 0.124 0.013 0.264 0.146 0.287 0.043 0.079 Marking Information Part Number Refer Pin Assignment 8970XK-XX Output Voltage Package Code YWWSSS Date Code (YWWSSS) Y：Last Digit Of The Year WW：Week SSS：Sequence Advanced Power Electronics Corp. APE8970/A (2) TO-252 5.6 L2 E 5.6 b2 7.2 D 11.0 D1 2.0 2.25 L1 1.2 Land Pattern Recommendation (Unit: mm) e e1 L Symbo l A A1 b b2 C C1 D D1 E e e1 H L L1 L2 Dimensions In Millimeters Min. 2.18 0.89 5.20 0.45 0.45 5.40 4.57 6.35 Nom. 2.29 0.61 TYP. 5.35 0.52 0.52 5.57 4.77 6.58 Max. 2.40 1.14 5.50 0.58 0.58 6.20 4.97 6.80 2.28 BSC. 9.00 0.51 0.64 0.88 4.57 BSC. 9.70 10.40 0.83 1.02 1.27 SEATING PLANE A A1 C H C1 b Dimensions In Inches Min. Nom. Max. 0.086 0.090 0.094 0.035 0.045 0.024 TYP. 0.205 0.211 0.217 0.018 0.020 0.023 0.018 0.020 0.023 0.213 0.219 0.244 0.180 0.188 0.196 0.250 0.259 0.268 0.090 BSC. 0.180 BSC. 0.354 0.020 0.025 0.035 0.382 0.033 - 0.409 0.040 0.050 Marking Information Part Number Refer Pin Assignment Package code Output Voltage 8970XH-XX LOGO YWWSSS Date Code (YWWSSS) Y：Last Digit Of The Year WW：Week SSS：Sequence Advanced Power Electronics Corp. APE8970/A (3) TO-263 10.9 L3 3 L 15.7 D 9.1 D1 L2 E 2.54 1.3 e b b2 C2 A C Land Pattern Recommendation (Unit: mm) L1 Symbo l A b b2 C C2 D D1 E e L L1 L2 L3 Dimensions In Inches Min. Nom. Max. 0.160 0.175 0.190 0.020 0.030 0.039 0.045 0.050 0.055 0.015 TYP. 0.045 0.050 0.055 0.341 0.360 0.380 0.200 0.220 0.240 0.380 0.393 0.405 Dimensions In Millimeters Min. 4.06 0.51 1.14 Nom. Max. 4.45 4.83 0.75 0.99 1.27 1.40 0.38 TYP. 1.40 1.14 1.27 8.65 9.15 9.65 5.10 5.60 6.10 9.65 9.97 10.29 2.54 BSC. 14.61 15.24 15.88 2.28 2.54 2.80 1.30 2.92 1.27 1.52 1.78 0.100 BSC. 0.575 0.090 0.050 0.600 0.100 0.051 0.060 0.625 0.110 0.115 0.070 Marking Information Part Number Refer Pin Assignment 8970XS-XX Output Voltage Package code YWWSSS LOGO Date Code (YWWSSS) Y：Last Digit Of The Year WW：Week SSS：Sequence