AME, Inc. AME8845 n General Description 3A CMOS LDO n Functional Block Diagram The AME8845 family of linear regulators feature low quiescent current (100A typ.) with low dropout voltage, making them ideal for battery applications. It is available in TO-252, SOT-223, TO-263 and TO-220 packages. The space-efficient TO-252, SOT-223 package is attractive for "Pocket" and "Hand Held" applications. Output voltages are set at the factory and trimmed to 1.5% accuracy. OUT IN Overcurrent Shutdown Thermal Shutdown EN R1 - These rugged devices have both Thermal Shutdown, and Current Fold-back to prevent device failure under the "Worst" of operating conditions. AMP + The AME8845 is stable with an output capacitance of 2.2F or greater. R2 Vref n Features GND l Very Low Dropout Voltage l Guaranteed 3A Output l Accurate to within 1.5% l 100A Quiescent Current Typically n Typical Application l Over-Temperature Shutdown l Current Limiting l Short Circuit Current Fold-back VIN l Space-Saving TO-252, SOT-223, TO-263 and TO-220 Package l Low Temperature Coefficient IN SENSE EN AME8845 OUT GND 0.1F 2.2F n Applications l Instrumentation l Portable Electronics l Wireless Devices l PC Peripherals l Battery Powered Widgets 1 AME, Inc. AME8845 3A CMOS LDO n Pin Configuration TO-252-2 Top View TO-252-2 Top View AME8845 1 2 AME 8845AECSxxx 1. VIN 2. GND (heat sink) 3. VOUT AME8845 3 1 SOT-223 Top View 2 3 SOT-223 Top View AME8845 1 2 AME8845AEGTxxx 1. VIN 2. GND 3. VOUT 3 AME8845 1 TO-220 Top View 2 AMExxxx AME8845 2 2 3 AME8845BEGTxxx 1. GND 2. VOUT 3. VIN 3 TO-220 Top View AME 8845AEBTxxx 1. VIN 1 AME 8845BECSxxx 1. GND 2. VOUT (heat sink) 3. VIN 2. GND (heat sink) 3. VOUT AMExxxx AME8845 1 2 3 AME 8845BEBTxxx 1. GND 2. VOUT (heat sink) 3. VIN AME, Inc. 3A CMOS LDO AME8845 n Pin Configuration TO-263-3L Top View TO-263-3L Top View AME 8845AEDTxxx 1. VIN AME8845 1 2 2. GND (heat sink) 3. VOUT 3 AME8845 1 2 AME 8845BEDTxxx 1. GND (heat sink) 2. VOUT 3. VIN 3 TO-263-5L Top View AME8845 1 AME 8845AEDVxxx 1. VIN 2. EN 3. GND (heat sink) 4. SENSE 5. VOUT 2 3 4 5 3 AME, Inc. AME8845 3A CMOS LDO n Ordering Information AME8845 x x x x xxx x Special Feature Voltage Number of Pin Package Operating Temperature Pin Configuration Pin Configuration Pin Configuration A: 1. VIN (TO-252) 2. GND 3. VOUT B: 1. GND 2. VOUT 3. VIN A: 1. VIN (TO-263-3) 2. GND 3. VOUT B: 1. GND 2. VOUT 3. VIN A: 1. VIN (TO-263-5) 2. EN 3. GND 4. SENSE 5. VOUT A: 1. VIN (TO-220) 2. GND 3. VOUT B: 1. GND 2. VOUT 3. VIN A: 1. VIN (SOT-223) 2. GND 3. VOUT B: 1. VIN (SOT-223) 2. GND 3. VOUT 4 Operating Temperature Range E: -40OC to 85OC Package Type B: C: D: G: TO-220 TO-252 TO-263 SOT-223 Number of Pins S: 2 T: 3 V: 5 Voltage 150: 180: 250: 330: V=1.5V V=1.8V V=2.5V V=3.3V Special Feature Z: Lead Free AME, Inc. AME8845 3A CMOS LDO n Ordering Information Part Number AME8845AEBT150 AME8845AEBT150Z AME8845BEBT150 AME8845BEBT150Z AME8845AEDT150 AME8845AEDT150Z AME8845BEDT150 AME8845BEDT150Z AME8845AEDV150 AME8845AEDV150Z AME8845AEBT180 AME8845AEBT180Z AME8845BEBT180 Marking* AME8845 AEBT150 yyww AME8845 AEBT150 yyww AME8845 BEBT150 yyww AME8845 BEBT150 yyww AME8845 AEDT150 yyww AME8845 AEDT150 yyww AME8845 BEDT150 yyww AME8845 BEDT150 yyww AME8845 AEDV150 yyww AME8845 AEDV150 yyww AME8845 AEBT180 yyww AME8845 AEBT180 yyww AME8845 BEBT180 yyww Output Voltage Package Operating Temp. Range 1.50 TO-220 - 40oC to + 85oC 1.50 TO-220 - 40oC to + 85oC 1.50 TO-220 - 40oC to + 85oC 1.50 TO-220 - 40oC to + 85oC 1.50 TO-263-3 - 40oC to + 85oC 1.50 TO-263-3 - 40oC to + 85oC 1.50 TO-263-3 - 40oC to + 85oC 1.50 TO-263-3 - 40oC to + 85oC 1.50 TO-263-5 - 40oC to + 85oC 1.50 TO-263-5 - 40oC to + 85oC 1.80 TO-220 - 40oC to + 85oC 1.80 TO-220 - 40oC to + 85oC 1.80 TO-220 - 40oC to + 85oC Note: yyww/ yww represents the date code * A line on top of the first letter represents lead free plating such as AME8845 Please consult AME sales office or authorized Rep./Distributor for output voltage and package type availability. 5 AME, Inc. AME8845 3A CMOS LDO n Ordering Information Part Number AME8845BEBT180Z AME8845AEDT180 AME8845AEDT180Z AME8845BEDT180 AME8845BEDT180Z AME8845AEDV180 AME8845AEDV180Z AME8845 BEBT180 yyww AME8845 AEDT180 yyww AME8845 AEDT180 yyww AME8845 BEDT180 yyww AME8845 BEDT180 yyww AME8845 AEDV180 yyww AME8845 AEDV180 yyww Output Voltage Package Operating Temp. Range 1.80 TO-220 - 40oC to + 85oC 1.80 TO-263-3 - 40oC to + 85oC 1.80 TO-263-3 - 40oC to + 85oC 1.80 TO-263-3 - 40oC to + 85oC 1.80 TO-263-3 - 40oC to + 85oC 1.80 TO-263-5 - 40oC to + 85oC 1.80 TO-263-5 - 40oC to + 85oC AME8845AEGT180 BAZyww 1.80 SOT-223 - 40oC to + 85oC AME8845AEGT180Z BAZyww 1.80 SOT-223 - 40oC to + 85oC 2.50 TO-220 - 40oC to + 85oC 2.50 TO-220 - 40oC to + 85oC 2.50 TO-220 - 40oC to + 85oC 2.50 TO-220 - 40oC to + 85oC 2.50 TO-263-3 - 40oC to + 85oC 2.50 TO-263-3 - 40oC to + 85oC AME8845AEBT250 AME8845AEBT250Z AME8845BEBT250 AME8845BEBT250Z AME8845AEDT250 AME8845AEDT250Z 6 Marking* AME8845 AEBT250 yyww AME8845 AEBT250 yyww AME8845 BEBT250 yyww AME8845 BEBT250 yyww AME8845 AEDT250 yyww AME8845 AEDT250 yyww AME, Inc. AME8845 3A CMOS LDO n Ordering Information Part Number AME8845BEDT250 AME8845BEDT250Z AME8845AEDV250 AME8845AEDV250Z Marking* AME8845 BEDT250 yyww AME8845 BEDT250 yyww AME8845 AEDV250 yyww AME8845 AEDV250 yyww Output Voltage Package Operating Temp. Range 2.50 TO-263-3 - 40oC to + 85oC 2.50 TO-263-3 - 40oC to + 85oC 2.50 TO-263-5 - 40oC to + 85oC 2.50 TO-263-5 - 40oC to + 85oC AME8845AEGT250 AZSyww 2.50 SOT-223 - 40oC to + 85oC AME8845AEGT250Z AZSyww 2.50 SOT-223 - 40oC to + 85oC 3.30 TO-220 - 40oC to + 85oC 3.30 TO-220 - 40oC to + 85oC 3.30 TO-220 - 40oC to + 85oC 3.30 TO-220 - 40oC to + 85oC 3.30 TO-263-3 - 40oC to + 85oC 3.30 TO-263-3 - 40oC to + 85oC 3.30 TO-263-3 - 40oC to + 85oC 3.30 TO-263-3 - 40oC to + 85oC 3.30 TO-263-5 - 40oC to + 85oC 3.30 TO-263-5 - 40oC to + 85oC AME8845AEBT330 AME8845AEBT330Z AME8845BEBT330 AME8845BEBT330Z AME8845AEDT330 AME8845AEDT330Z AME8845BEDT330 AME8845BEDT330Z AME8845AEDV330Z AME8845AEDV330Z AME8845 AEBT330 yyww AME8845 AEBT330 yyww AME8845 BEBT330 yyww AME8845 BEBT330 yyww AME8845 AEDT330 yyww AME8845 AEDT330 yyww AME8845 BEDT330 yyww AME8845 BEDT150 yyww AME8845 AEDV330 yyww AME8845 AEDV330 yyww 7 AME, Inc. AME8845 3A CMOS LDO n Absolute Maximum Ratings Parameter Maximum Unit 7 V Output Current PD / (V IN - VO) mA Output Voltage GND - 0.3 to VIN + 0.3 V Input Voltage ESD Classification B Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device n Recommended Operating Conditions Parameter Ambient Temperature Range Junction Temperature 8 Rating Unit - 40 to + 85 o C - 40 to + 125 o C AME, Inc. AME8845 3A CMOS LDO n Thermal Information Parameter Maximum TO-252 90 TO-263 60 Unit o Thermal Resistance (ja) C/W TO-220 50 SOT-223 160 Conductive 7 Non-Conductive 30 Conductive 7 Non-Conductive 27 TO-252 TO-263 o Thermal Resistance (jc) C/W Conductive 7 Non-Conductive 24 Conductive 7 Non-Conductive 31 TO-220 SOT-223 Internal Power Dissipation (P D ) (T = 100oC) TO-252 1200 TO-263 2800 TO-220 3000 SOT-223 625 mW Maximum Junction Temperature 150 o Maximum Lead Temperature (10 Sec) 300 o C C 9 AME, Inc. AME8845 3A CMOS LDO n Electrical Specifications VIN = VO(Nom) +1V, CIN=0.1F, COUT=2.2F, TA = 25OC unless otherwise noted Parameter Input Voltage VIN Output Voltage Accuracy VO Dropout Voltage Test Condition Symbol VDROPOUT Min IO=1mA IO=3A VO=VO(NOM) -2.0% Units Note 1 6 V -1.5 1.5 % 1.5V<=VO(NOM) <=1.8V 1200 1.8V<VO(NOM) <2.5V 700 2.5V<=VO(NOM) Output Current Typ Max 300 mV 450 IO VO>1.2V 3000 mA Current Limit ILIM VO>1.2V 3 A Short Circuit Current ISC VIN = VO(NOM) +1V, VO<0.4V 1.7 A Quiescent Current IQ IO=0mA 200 Ground Pin Current IGND IO=1mA to 3A 300 Line Regulation REGLINE IO=1mA, VIN =VO+1 to VO+2 -0.2 Load Regulation REGLOAD IO=1mA to 3A -1 0.1 350 A A 0.2 % 1 % Over Temperature Shutdown OTS 140 o Over Temperature Hysterisis OTH 30 o TC 30 VO Temperature Coefficient Power Supply Rejection Output Voltage Noise EN Input Threshold EN Input Leakage Shutdown Current Note1:VIN(min) =VOUT+VDROPOUT 10 PSRR eN VEH VEL IO=100mA f=100Hz 70 CO=10F f=1kHz 50 f=10Hz to 100kHz IO=10mA Co=2.2F 30 C C ppm/oC dB VIN =VIN ,MIN to VIN , MAX Vrms VIN *0.8 VIN 0 0.4 IEH VEN =VIN =5V 2 IEL VEN =0V, VIN =5V 2 ISD VEN =0V, VIN =5V 10 V A A AME, Inc. AME8845 3A CMOS LDO n Detailed Description n External Capacitors The AME8845 family of CMOS regulators contain a PMOS pass transistor, voltage reference, error amplifier, over-current protection, and thermal shutdown. The AME8845 is stable with an output capacitor to ground of 2.2F or greater. Ceramic capacitors have the lowest ESR, and will offer the best AC performance. Conversely, Aluminum Electrolytic capacitors exhibit the highest ESR, resulting in the poorest AC response. Unfortunately, large value ceramic capacitors are comparatively expensive. One option is to parallel a 0.1F ceramic capacitor with a 10F Aluminum Electrolytic. The benefit is low ESR, high capacitance, and low overall cost. The P-channel pass transistor receives data from the error amplifier, over-current shutdown, and thermal protection circuits. During normal operation, the error amplifier compares the output voltage to a precision reference. Over-current and Thermal shutdown circuits become active when the junction temperature exceeds 140oC, or the current exceeds 4.5A. During thermal shutdown, the output voltage remains low. Normal operation is restored when the junction temperature drops below 110oC. The AME8845 behaves like a current source when the load reaches 4.5A. However, if the load impedance drops below 0.3 ohms, the current drops back to 600mA to prevent excessive power dissipation. Normal operation is restored when the load resistance exceeds 0.75 ohms. A second capacitor is recommended between the input and ground to stabilize Vin. The input capacitor should be at least 0.1F to have a beneficial effect. All capacitors should be placed in close proximity to the pins. A "Quiet" ground termination is desirable. This can be achieved with a "Star" connection. 11 AME, Inc. AME8845 3A CMOS LDO Dropout Voltage vs. Load Current Temperature Stability 450 2.6 VOUT=2.5V 400 Dropout V oltage (m V) Output V oiltage (V) 2.56 2.52 2.48 2.44 350 300 125oC 250 85oC 200 55oC 150 25oC 100 -5oC -45oC 50 2.4 -45 -35 -25 -15 -5 0 5 15 25 35 45 55 65 75 85 95 105115125 0.0 Temperature (oC) Quiescent Current vs.Temperature 2.0 2.5 3.0 Dropout Voltage vs. Temperature Dropout Voltage @ 3A (m V) Quiescent Current @ 5V (uA) 1.5 450 350 330 310 290 270 250 -45 -35 -25 -15 -5 5 15 25 35 45 55 65 75 85 95 105 115 125 400 300 250 200 150 -45 -35 -25 -15 -5 5 15 25 35 45 55 65 75 85 95 105115125 Temperature (o C) Current Limit vs. Temperature Quiescent Current vs. Supply Voltage 9.0 450 8.0 400 125oC 7.0 350 Curr ent Lim it (A) 85oC 300 55oC -45oC 250 -5oC 200 25oC 150 6.0 5.0 4.0 3.0 2.0 100 1.0 50 0 0.0 VOUT =2.5V 350 Temperature (oC) Quiescent Current (uA) 1.0 Load Current (A) 370 1.0 2.0 3.0 4.0 Supply Voltage (V) 12 0.5 5.0 6.0 0.0 -40-30 -20 -10 0 10 20 25 30 40 50 60 70 80 90100 110 125 Temperature(oC) AME, Inc. AME8845 3A CMOS LDO Output Voltage(2.5V) vs. Input Voltage Output Noise vs. Frequency 3.0 25 20 Output Noise (uV) O utput V oltage (V) 2.5 2.0 55 oC 85 C o 1.5 125 oC 1.0 -45C 0.0 0 1 VIL=100mA VOUT=3.3V 15 10 5 -45 oC -5 oC 25 oC 0.5 VIN=5V CL=10F 2 3 4 5 0 10 6 100 1000 Input Voltage (V) PSRR vs. Frequency -30 300 PSRR (dB) -40 -50 -60 VIN=5V ILOAD=100mA C L=10F VOUT=3.3V 1.0E+02 1.0E+03 1.0E+04 1.0E+05 1.0E+06 Frequency (Hz) G round Current (mA) 350 -80 1.0E+01 100000 Ground Current vs. Load Current -20 -70 10000 Frequency (HZ) IQ(uA) 250 200 150 100 50 0 0.0 Vout = 3.3V Cin= 0.1 F(ceramic) Cout= 2.2 F(ceramic) Vin= Vo+1.0V 0.5 1.0 1.5 2.0 2.5 3.0 Load Current (A) Load Regulation Deviation O utput Voltage Deviation (% ) 0.16 0.14 0.12 0.10 V OUT =2.5V CIN=3.3F (Ceramic) COUT=3.3F (Ceramic) IL=3A 0.08 0.06 0.04 0.02 0.00 -0.02 -0.04 -0.06 -40-30 -20 -10 0 10 20 25 30 40 50 60 70 80 90100 110 125 Temperature(oC) 13 AME, Inc. AME8845 3A CMOS LDO Input Voltage(V) Output Voltage Deviation(mV) Line Transient Response Cin= 0 Cout= 4.7 F(ceramic) 100 Vout = 3.3V Vin= 5.3V~4.3V TA =25oC ILOAD =1mA 50 0 5.3 4.3 Time (20S/DIV) Load Current(A) Output Voltage Deviation(mV) Load Transient Response Cin= 0.1 F(ceramic) Cout= 10uF(Tantalum) 100 Vout = 3.3V Vin= 5.3V~4.3V TA =25oC ILOAD:100mA--->3A 50 0 3 0.1 Time (500S/DIV) 14 Li AME, Inc. AME8845 3A CMOS LDO n Package Dimension TO-263-3 Side View Top View A SYMBOLS B H P G D N MIN MAX A 9.65 10.42 0.380 0.410 B 8.28 9.66 0.326 0.380 C 4.06 4.83 0.160 0.190 D 0.50 1.02 0.020 0.040 E 1.14 1.40 0.045 0.055 G * H 14.60 15.60 K 0.99 2.93 P R INCHES MAX N Front View MILLIMETERS MIN K E R * 2.54 0.100 0.381REF 2.28 0 8 0.61417 0.03898 0.11535 0.015REF 2.80 o 0.5748 o 0.08976 0.11024 0o 8o C TO-263-5 Top View Side View SYMBOLS A B K E H P W D G Front View N R A B C D E G H K L N P R W MILLIMETERS INCHES MIN MAX MIN MAX 10.050 10.668 0.396 0.420 8.280 9.169 0.326 0.361 4.310 4.597 0.170 0.181 0.660 0.910 0.026 0.036 1.140 1.400 0.045 0.055 1.70REF 0.067 REF 14.605 15.875 0.575 0.625 1.143 1.680 0.045 0.066 0.000 0.305 0.000 0.012 0.330 0.580 0.013 0.023 2.280 2.800 0.090 0.110 0o 8o 0.25REF 0o 8o 0.01REF C 15 AME, Inc. AME8845 3A CMOS LDO n Package Dimension TO-252(DPAK)-EIAJ SYMBOLS E B K A L F G C MIN MAX MIN MAX 0.45 0.58 0.0177 0.0230 B 1.60 1.95 0.0630 0.0768 C 0.51 1.50 0.0201 0.0591 D 0.45 0.60 0.0177 0.0236 E F 6.40 6.80 0.2520 0.2677 5.40 7.20 0.2126 0.2835 G 2.20 2.85 0.0866 0.1122 H - * 2.30 - * 0.0906 J - 0.97 - 0.0380 K 5.20 5.50 0.2047 0.2165 1.40REF L J D H INCHES A Side View Top View MILLIMETERS 0.055REF *: Typical Value Notes: 1. Controlling dimension: Millimeters. 2. Maximum lead thickness includes lead finish thickness Minimum lead thickness is the minimum thickness of base material. SOT-223 Top View Side View D B1 SYMBOLS C 13o(4X) H E e Front View 13o(4X) MILLIMETERS MIN MAX MIN MAX A1 0.02 0.10 0.0008 0.0039 B 0.60 0.84 0.0236 0.0330 B1 2.90 3.15 0.1140 0.1240 C 0.24 0.38 0.0094 0.0150 D 6.30 6.71 0.2480 0.2640 E 3.30 3.71 0.1299 0.1460 2.30 BSC e H 6.70 F A1 16 B INCHES o ? 0 F 1.40 0.0906 BSC 7.30 10 o 1.80 0.2638 0 o 0.0560 0.2874 10o 0.0702 AME, Inc. AME8845 3A CMOS LDO n Package Dimension TO-220 Top View SYMBOLS O M I N G K P Side View C D E A MILLIMETERS INCHES MIN MAX MIN MAX A 5.58 7.49 0.2197 0.2949 C 3.55 4.83 0.1398 0.1900 D 0.50 1.40 0.0197 0.0550 E 0.30 1.15 0.0118 0.0453 G 9.65 10.67 0.3799 0.4200 I 3.53 4.09 0.1390 0.1610 K 0.50 1.15 0.0197 0.0453 M 1.14 1.78 0.0449 0.0700 N 2.28 2.80 0.0898 0.1102 O 12.70 14.74 0.5000 0.5803 P 14.22 16.51 0.5600 0.6500 17 Life Support Policy: These products of AME, Inc. are not authorized for use as critical components in life-support devices or systems, without the express written approval of the president of AME, Inc. AME, Inc. reserves the right to make changes in the circuitry and specifications of its devices and advises its customers to obtain the latest version of relevant information. AME, Inc. , September 2003 Document: 2006-DS8803/8814-G E-Mail:Longman@rccn.com.cn Address:Room 2101, No.2 Building Yulan garden, No.50 Puhuitang Rd,Shanghai,PRC zip:200030 Tel : 86-21-64285731/32 ext:8033 Fax: 86-21-64393342 Sales Manager:Longman Xu