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Analog Microelectronics Inc. AME8801/8812/8840 300mA CMOS LDO

1. 0 1 1 0 8 0 Input Output Voltage Differential V BX Analog Microelectronics Inc AME8801 881 2 8840 300mA CMOS LDO Stability vs ESR vs Ii gap Stability vs ESR vs l gap 10000 Unstable Region Unstable Region 1000 100 1 Stable Regi S 10 1 Stable Region o Br T 0 1 0 01 Untested Region 0 50 100 150 200 0 50 100 150 200 ILOAD mA ILOAD mA Stability vs ESR vs l gap Stability vs ESR vs Ii gap Unstable Region C 10uF Stable Region A Stable Regi Untested Region Untested Region 0 50 100 150 200 0 50 100 150 200 ILOAD mA ILOAD mA 11 A Analog Microelectronics Inc AME8801 8812 8840 300mA CMOS LDO Quiescent Current 5V uA Shut Down Current uA EN pin LO bias current uA 35 34 33 32 31 30 29 28 27 Quiescent Current vs Temp 45 5 25 55 85 Temperature 9C Shut Down Current vs Temp EN Pin LO Bias Current vs Temp 0 20 0 25 0 30 0 35 0 40 0 45 0 50 1 0 0 9 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 0 0 45 5 25 55 85 Temperature C 45 5 25 55 85 Temperature C Load Regulation Dropout Voltage 2 300mA 0 58 0 56 0 54 0 52 0 50 0 48 0 46 0 44 0 42 0 40 220 210 200 190 mV
2. 2 2uF q E its a o c gt o 5 2 S 2 4 2 o 2 Load e 7 lt 0 0 1 2 3 4 5 6 7 8 TIME 20mS DIV Input Voltage V Chip Enable Transient Response Chip Enable Transient Response S S a a amp amp 2 2 a E M lt 0 Lu Lu S S a a gt gt 5 5 o lt 0 8 JETESE TIME Cims 200 TIME 1mS DIV Drop Out Voltage vs Output Voltage Es Drop Out Voltage vs Load Current 300 Top to bottom S 250 S 200 E E 9 200 o Ej 15 S 150 s 5 100 2 O 3 2 100 2 2 E 50 Q 50 0 0 25 275 3 325 35 375 4 O 1207 100 150 200 250 300 8 Output Voltage V Load Current mA BX Analog Microelectronics Inc AME8801 881 2 8840 300mA CMOS LDO Power Supply Rejection Ratio 20 E 100mA 30 C 2 24F Tantalum Cayp 1000pF 40 1mA 3 00mA D 2 60 70 10mA 100 s 100pA 80 1 0E 01 1 0E 03 1 0E 05 1 0E 07 Frequency Hz Power Supply Rejection Ratio 10 Cuyp 0 35 Cayo 100 pF pig OF c 10 uF a Tantalum S 40 1 100 mA tc E 50 e n 60 y 4 Cayo 1 nF 70 Cayp 10 nF 80 1 0E 01 1 0E 02 1 0E 03 1 0E 04 1 0E 05 1 0E 06 Frequency Hz Short Circuit Response I oap 400mA DIV Vour 1V D
3. CC CC Y E CI E E Recommended Operating Conditions mes ine o9 Ambient Temperature Range 40 to 85 Junction Temperature 40 to 125 E Thermal Information Thermal Resistance qja Output Current V Internal Power Dissipation Pp DT 100 C Thermal Resistance qja Internal Power Dissipation Pp DT 100 C Maximum Junction Temperature Caution Stress above the listed absolute rating may cause permanent damage to the device IN Analog Microelectronics Inc AME8801 881 2 8840 300mA CMOS LDO E Electronic Specifications TA 25 C unless otherwse noted Parameter Sms esee E ws i Dmm E ID ont vene vo em 88 ts 1 1 2V lt Vonom lt 2 0V 1 2V lt Vonom lt 2 0V ovf 1300 lg 300mA See Dropout Volt V 2 0V lt V 2 8V mV TERM NEN O IE EN oo RE ON E chart 28V Vowos 28V Vowos Euer Ew 9 5 ELI D A RAR MR EA pe BT AREAS IESO ESAS CON A E 7E FR a Pi AAA A LAR TAB ala Line Regulation a EAT ES A A E E E EAS A A A ES AE O A E CE MC E AAA alo e ae el e KHz f 10Hz to 100kHz Co 2 A F 30 V Output Voltage Noise loc 10mA 2 2u uVrms Mv ao wv Cc EN Input Bias Current Ve VEA to 7V os A TEEN o nee CN surco Opat Varese Yos woman o 9 v Note1 Vin mim Vour VbpRoPOUT BX Analog Microelectronics Inc AME8801 881 2 8840 300mA CMOS LDO E Detailed Description The AME8801 8840 family of CM
4. 180 170 160 150 Load Regulation vs Temp 45 5 25 55 Temperature 9C 85 Dropout Voltage vs Temp OUT gt 45 5 25 55 emperature C 85 BX Analog Microelectronics Inc AME8801 881 2 8840 300mA CMOS LDO E Package Dimension SOT 25 Ls Se i z J i SOT 26 A ww oas woe oooi gt os os vos enr b xm 3u oms or e we ooms peas oon a o o o r 13 A www analogmicro com E Mail info analogmicro com Life Support Policy These products of Analog Microelectronics Inc are not authorized for use as critical components in life support devices or systems without the express written approval of the president of Analog Microelectronics Inc Analog Microelectronics 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 Analog Microelectronics Inc August 2001 Document 2006 DS8801 8812 8840 E Corporate Headquarters Asia Pacific Headquarters Analog Microelectronics Inc AME Inc 3100 De La Cruz Blvd Suite 201 2F 187 Kang Chien Road Nei Hu District Santa Clara CA 95054 2046 Taipei 114 Taiwan R O C Tel 408
5. 40 300mA CMOS LDO E Pin Configuration AME8801 AME8801 AME8812 AME8840 SOT 25 Top View SOT 26 Top View SOT 25 Top View SOT 25 Top View 5 4 6 5 4 5 4 5 4 1 2 3 1 2 3 1 2 3 1 2 3 1 VN 4 BYP 1 OUT1 4 EN 1 EN 4 OUT 1 EN 4 OUT 2 GND 5 OUT 2 GND 5 Vn 2 GND 5 BYP 2 GND 5 VN 3 EN 3 BYP 6 OUT_2 3 Vn 3 BYP E Ordering Information O O O Please consult AME sales office or authorized Rep Distributor for other output 2 voltage and package type availability O O O O O O O O O O O BX Analog Microelectronics Inc AME8801 881 2 8840 300mA CMOS LDO E Ordering Information AME8812AEEV AME8812BEEV AMEBB12CEEV AME8812DEEV AME8812EEEV AME8812FEEV AME8812GEEV AME8812HEEV AME8812IEEV 40 C to 85 C AME8812NEEV 40 C to 85 C AME88120EEV 40 C to 85 C Please consult AME sales office or authorized Rep Distributor for other output voltage and package type availability IN Analog Microelectronics Inc AME8801 8812 8840 300mA CMOS LDO E Ordering Information SOT25 AME8840CEEV SOT 25 40 C to 85 C AME8840DEEV SOT 25 40 C to 85 C AME8840EEEV SOT 25 40 C to 85 C AME8840FEEV SOT 25 40 C to 85 C Please consult AME sales office or authorized Rep Distributor for other output voltage and package type availability BX Analog Microelectronics Inc AME8801 881 2 8840 300mA CMOS LDO E Absolute Maximum Ratings rss is mI CI E AC IE
6. 988 2388 Tel 886 2 2627 8687 Fax 408 988 2489 Fax 886 2 2659 2989
7. IV TIME 2mS DIV PSRR dB PSRR dB Power Supply Rejection Ratio 0 10 C 2 2uF Tantalum 100mA 20 NE BYP 30 40 50 100mA 10mA 60 70 10014 100pA 1mA 80 1 0E 01 1 0E 03 1 0E 05 1 0E 07 Frequency Hz Power Supply Rejection Ratio 10 20 Coyp 0 LIE T Caye 100 pF 30 C 5 6 uF Ceramic 40 100 mA 50 P Cayo 1 nF 70 Cay 10 nF 80 1 0E 01 1 0E 02 1 0E 03 1 0E 04 1 0E 05 Frequency Hz Overtemperature Shutdown a q E e e e 5 lt 0 o Ry oap 8 62 a pe 8 gt lt 0 TIME 0 5Sec DIV IN Analog Microelectronics Inc AME8801 881 2 8840 300mA CMOS LDO lour 200mA DIV Vour 1V DIV Vn 1V DIV Vo 1mV DIV Current Limit Response TIME 2mS DIV Transient Line Response TIME 2mS DIV Output Current mA Vo 1mV DIV do o 10 Noise Measurement TIME 20mS DIV Safe Operating Area
8. O 0 AMES O O AN Analog Microelectronics Inc AME8801 8812 8840 300mA CMOS LDO E General Description The AME8801 8840 family of positive linear regulators feature low quiescent current 30uA typ with low drop out voltage making them ideal for battery applications The space saving SOT 23 5 package is attractive for Pocket and Hand Held applications These rugged devices have both Thermal Shutdown and Current Fold back to prevent device failure under the Worst of operating conditions In applications requiring a low noise regulated supply place a 1000 pF capacitor between Bypass and Ground The AME8801 is stable with an output capacitance of 2 2uF or greater E Functional Block Diagram E Overcurrent Shutdown Thermal Shutdown B Features e Very Low Dropout Voltage e Guaranteed 300mA Output e Accurate to within 1 596 e 30uA Quiescent Current e Over Temperature Shutdown e Current Limiting e Short Circuit Current Fold back e Noise Reduction Bypass Capacitor e Power Saving Shutdown Mode e Space Saving SOT 25 SOT 23 5 Package e Factory Pre set Output Voltages e Low Temperature Coefficient E Applications e Instrumentation e Portable Electronics e Wireless Devices e Cordless Phones e PC Peripherals e Battery Powered Widgets e Electronic Scales E Typical Application OUTPUT INPUT IN OUT AME8801 BYP GND EN IN Analog Microelectronics Inc AME8801 8812 88
9. OS regulators contain a PMOS pass transistor voltage reference error ampli fier over current protection and thermal shutdown The P channel pass transistor receives data from the error amplifier over current shutdown and thermal pro tection circuits During normal operation the error am plifier compares the output voltage to a precision refer ence Over current and Thermal shutdown circuits be come active when the junction temperature exceeds 150 C or the current exceeds 300mA During thermal shutdown the output voltage remains low Normal op eration is restored when the junction temperature drops below 120 C The AME8801 8840 switches from voltage mode to cur rent mode when the load exceeds the rated output cur rent This prevents over stress The AME8801 8840 also incorporates current foldback to reduce power dis sipation when the output is short circuited This feature becomes active when the output drops below 0 8volts and reduces the current flow by 65 Full current is restored when the voltage exceeds 0 8 volts E External Capacitors The AME8801 8840 is stable with an output capacitor to ground of 2 2uF 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 com paratively expensive One option is to parallel a 0 1uF cer
10. amic capacitor with a 10uF Aluminum Electrolytic The benefit is low ESR high capacitance and low over all cost A second capacitor is recommended between the input and ground to stabilize Vin The input capacitor should be at least 0 1uF to have a beneficial effect A third capacitor can be connected between the BY PASS pin and GND This capacitor can be a low cost Polyester Film variety between the value of 0 001 0 01uF A larger capacitor improves the AC ripple re jection but also makes the output come up slowly This Soft turn on is desirable in some applications to limit turn on surges 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 E Enable The Enable pin normally floats high When actively pulled low the PMOS pass transistor shuts off and all internal circuits are powered down In this state the quiescent current is less than 1uA This pin behaves much like an electronic switch IN Analog Microelectronics Inc AME8801 881 2 8840 300mA CMOS LDO Load Step 1mA 300mA Ground Current vs Input Voltage C 2 2uF 4 a Output E 5 S SP C

Analog Microelectronics Inc. AME8801/8812/8840 300mA CMOS LDO

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