AME8807AEVAZ3

AME, Inc. AME8807 n General Description The AME8807 family of positive, linear regulators feature low ground current (30µA Typ.) with low dropout voltage, making them ideal for battery applications. The space-saving SOP-8 & DFN-8 (3mmx3mmx0.75mm) packages are 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" operating conditions. The AME8807 is stable with an output capacitance of 2.2µF or greater. 600mA CMOS LDO n Functional Block Diagram IN OUT Overcurrent Shutdown Thermal Shutdown EN AMP ADJ n Features l Very Low Dropout Voltage l Guaranteed 600mA Output l Typical 30µA Quiescent Current l Accurate to within 1.5% l Over-Temperature Shutdown l Current Limiting l Short Circuit Current Fold-back l Power-Saving Shutdown Mode l Space-Saving SOP-8 & DFN-8 (3mmx3mmx0.75mm) Packages l User Adjustable Output Voltages l Low Temperature Coefficient l All AME's Lead Free Products Meet RoHS Standards C1 1 µF R2 IN EN IN OUT Vref =1.215V GND n Typical Application OUT C2 R1 100p C3 2.2µF AME8807 GND ADJ n Applications l Instrumentation l Portable Electronics l W ireless Devices l Cordless Phones l PC Peripherals l Battery Powered Widgets VOUT = 1.215 ( R1/R2 +1 ) C2 is unnecessary if R1 or R2 < 20 K Ohms R R and R use resistance value within 1% accuracy for a d correct V 2 n1 OUT Rev.N.01 1 AME, Inc. AME8807 n Pin Configuration SOP-8 Top View 8 7 6 5 600mA CMOS LDO SOP-8 Top View AME8807AEHA 1. IN 2. GND 3. GND 8 7 6 5 AME8807BEHA 1. OUT 2. ADJ 3. GND 4. NC 5. EN 6. NC 4. EN 伍 豐 明 年 每 股 E P S 挑5. ADJ 戰 11 元 伍豐 6. GND 1 2 3 4 AME8807 AME8807 7. GND 8. OUT * Die Attach: Conductive Epoxy 1 2 3 4 7. NC 8. IN * Die Attach: Conductive Epoxy DFN-8 (3mmx3mmx0.75mm) Top View AME8807AEVA 8 7 6 5 1. EN 2. GND 3. GND 4. IN 5. OUT 6. GND AME8807 1 2 3 4 7. GND 8. ADJ * Die Attach: Conductive Epoxy Note: The area enclosed by dashed line represents Exposed Pad and connect to GND. 2 Rev.N.01 AME, Inc. AME8807 n Ordering Information AME8807 x x x x x - x Special Feature2 Special Feature1 Number of Pins Package Type Operating Ambient Temperature Range Pin Configuration 600mA CMOS LDO Pin Operating Ambient Configuration Temperature Range A: 1. IN 2. GND 3. GND 4. EN 5. ADJ 6. GND 7. GND 8. OUT B: 1. OUT 2. ADJ 3. GND 4. NC 5. EN 6. NC 7. NC 8. IN A: 1. EN 2. GND 3. GND 4. IN 5. OUT 6. GND 7. GND 8. ADJ E: -40OC to 85OC Package Type H: SOP V: DFN Number of Pins A: 8 Special Feature1 Special Feature 2 (For DFN package only) 3: 3x3x0.75(mm) (LxWxH) Z: Lead Free (SOP-8) (SOP-8) (DFN-8) Rev.N.01 3 AME, Inc. AME8807 n Ordering Information Part Number AME8807AEHA 600mA CMOS LDO Marking* 8807 AEHA yyww Output Voltage Adjustable Package SOP-8 Operating Ambient Temperature Range - 40oC to 85oC 8807 AME8807AEHAZ AEHA 伍 豐 明 年 每 股 E P S 挑 戰 11 元 yyww 伍豐 8807 AME8807BEHA BEHA yyww AME8807BEHAZ 8807 BEHA yyww BEX yyww Adjustable SOP-8 - 40oC to 85oC Adjustable SOP-8 - 40oC to 85oC Adjustable SOP-8 DFN-8 (3mmx3mmx0.75mm) - 40oC to 85oC AME8807AEVAZ-3 Adjustable - 40oC to 85oC Note: yyww represents the date code * A line on top of the first letter represents lead free plating such as 8807 Please consult AME sales office or authorized Rep./Distributor for package type availability. 4 Rev.N.01 AME, Inc. AME8807 n Absolute Maximum Ratings Parameter Input Voltage EN Voltage Output Voltage Output Current ESD Classification 600mA CMOS LDO Maximum -0.3 to 8 -0.3 to 8 -0.3 to VIN + 0.3 P D / (V IN - VOUT) B* Unit V V V mA Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device. *HBM B:2000V~3999V n Recommended Operating Conditions Parameter Ambient Temperature Range Junction Temperature Range Storage Temperature Range Symbol TA TJ TSTG Rating - 40 to 85 - 40 to 125 - 65 to 150 Unit o o o C C C n Thermal Information Parameter Thermal Resistance* (Junction to Case) Package SOP-8 DFN-8 (3mmx3mmx0.75mm) SOP-8 DFN-8 (3mmx3mmx0.75mm) SOP-8 Die Attach Symbol θJC Maximum 60 17 150 Unit o C/W Thermal Resistance (Junction to Ambient) Conductive Epoxy θJA 125 810 mW Internal Power Dissipation DFN-8 (3mmx3mmx0.75mm) PD 800 150 350 o o Maximum Junction Temperature Solder Iron (10 Sec)** C C * Measure θJC on center of molding compound if IC has no tab. O ** MIL-STD-202G 210F F Rev.N.01 5 AME, Inc. AME8807 n Electrical Specifications TA = 25OC unless otherwise noted Parameter Input Voltage Output Voltage Accuracy Symbol VIN VO IO = 600mA IO = 1mA 1.5V < VO(NOM) 1.2V VO < 0.8V IO = 0mA IO = 1mA to 600mA IO = 1mA VIN = VO+1 to VO+2 VO < 2.0V VO >= 2.0V mV IO = 1mA to 600mA C C ppm/oC Output Voltage Noise ADJ Reference Voltage EN Input Threshold eN VREF VEH VEL IEH IEL ISD EN Input Bias Current Shutdown Supply Current Note1:VIN(min)=VOUT+VDROPOUT 6 Rev.N.01 AME, Inc. AME8807 n Detailed Description The AME8807 family of CMOS regulators contain a PMOS pass transistor, voltage reference, error amplifier, over-current protection, and thermal shutdown. 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 150oC, or the current exceeds 600mA. During thermal shutdown, the output voltage remains low. Normal operation is restored when the junction temperature drops below 120oC. The AME8807 switches from voltage mode to current mode when the load exceeds the rated output current. This prevents over-stress. The AME8807 also incorporates current fold-back to reduce power dissipation when the output is short circuited. This feature becomes active when the output drops below 0.8 volts, and reduces the current flow by 65%. Full current is restored when the voltage exceeds 0.8 volts. 600mA CMOS LDO n 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 1µA. This pin behaves much like an electronic switch. n ADJ The ADJ pin is the positive input to the error amplifier which, due to the pmos pass element inversion, means it is actually the negative input of the LDO feedback loop. The feedback works to keep the voltage at the ADJ pin 1.215V with respect to ground. Since the internal circuitry at the ADJ pin is essentially an ESD protected CMOS gate the input current at the ADJ pin is virtually zero. n External Capacitors The AME8807 is stable with an output capacitor to ground of 2.2µF 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 0.1µF ceramic capacitor with a 10µF Aluminum Electrolytic. The benefit is low ESR, high capacitance, and low overall cost. A second capacitor is recommended between the input and ground to stabilize Vin. The input capacitor should be at least 0.1µF 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. Rev.N.01 7 AME, Inc. AME8807 Ground Current vs. Input Voltage 45 40 600mA CMOS LDO Load Step (1mA-600mA) Vo(10mV/DIV) Ground Current (µ A) 35 30 25 20 15 10 5 0 0 1 2 3 4 85 OC Output CL=2.2µF CIN=2.2µF 25 C IL(200mA/DIV) O 伍 豐 明 年 每 股 E P S 挑 戰 11 元 伍豐 5 6 7 8 ILoad 0 TIME (20mS/DIV) Input Voltage (V) Drop Out Voltage vs. Output Voltage 1400 1200 Power Supply Rejection Ratio 0 -10 -20 D r o p O u t V o lt a g e ( m V ) 1000 800 600 400 PSRR (dB) Top to Bottom ILOAD=600mA ILOAD=500mA ILOAD=400mA ILOAD=300mA ILOAD=200mA ILOAD=100mA CL=2.2µF Tantalum Tantalum C BYP =0 100mA -30 -40 -50 -60 100mA 10mA 200 -70 -80 10 100 µ A 1K 100 µ A 100K 1mA 10M 1 2 3 4 5 6 Output Voltage (V) Frequency (Hz) Safe Operating Area 600 Noise Measurement 8807AEHA Output Current (mA) 8807BEHA Vo (1mV DIV) CL=2.2µF No Filter 100 10 0.1 1.0 8.0 Input-Output Voltage Differential (V) TIME (20ms/DIV) 8 Rev.N.01 AME, Inc. AME8807 Overtemperature Shutdown I OUT (200mA/DIV) VOUT (1V/DIV) 600mA CMOS LDO Current Limit Response 0 IOUT (200mA/DIV) R LOAD=6.6 Ω VOUT (1V/DIV) CLOAD=2.2µF CIN=1.0µF RLOAD=3.3Ω VOUTNOM=3.3V 0 TIME (0.5Sec/DIV) TIME (2mS/DIV) Short Circuit Response CLOAD=2.2µF CIN=1µF RLOAD