AME8844AEQA250Z

AME, Inc. AME8844 750mA CMOS LDO n General Description The AME8844 family of positive, linear regulators feature low quiescent current (45µA typ.) with low dropout voltage, making them ideal for battery applications. Output voltages are set at the factory and trimmed to 1.5% accuracy. These rugged devices have both Thermal Shutdown, and Current Fold-back to prevent device failure under the "Worst" operating conditions. An additional feature is a “Power Good” detector, which pulls low when the output is out of regulation. The AME8844 is stable with an output capacitance of 4.7µF or greater. n Functional Block Diagram (Fixed Versions) IN OUT Overcurrent Shutdown Thermal Shutdown EN Vref x115% PG R1 AMP R2 n Features l Very Low Dropout Voltage l Guaranteed 750mA Output l Accurate to within 1.5% l 45µA Quiescent Current Typically l Over-Temperature Shutdown l Current Limiting l Short Circuit Current Fold-back l Noise Reduction Bypass Capacitor (Fixed Versions) l Power-Saving Shutdown Mode l Space-Saving MSOP-8 Package l 6 Factory Pre-set Output Voltages l Low Temperature Coefficient l Adjustable Version l Power Good Output Function. l All AME's Lead Free Products Meet RoHS Standards Vref x85% Vref GND (Adjustable Version) IN OUT Overcurrent Shutdown Thermal Shutdown AMP R1 EN ADJ (external) 1.242V R2 (external) GND n Typical Applications IN IN OUT OUT n Applications l Instrumentation l Portable Electronics l W ireless Devices l PC Peripherals l Battery Powered Widgets Rev.E.01 C1 5V 1µ F AME8844 PG GND EN C3 4.7µF 1 AME, Inc. AME8844 750mA CMOS LDO n Pin Configuration MSOP-8 Top View 8 7 6 5 MSOP-8 Top View AME 8844AEQAxxx 1. EN 2. IN 3. PG 8 7 6 5 AME 8844BEQAADJ 1. EN 2. IN 3. ADJ AME8844 4. OUT 5. GND 6. GND 7. GND 8. GND * Die Attach: Conductive Epoxy AME8844 4. OUT 5. GND 6. GND 7. GND 8. GND * Die Attach: Conductive Epoxy 1 2 3 4 1 2 3 4 n Pin Description Pin Number Pin Name AME8844AEQA AME8844BEQA Enable pin. When pulled low, the PMOS pass transistor turns off, current consuming less than 1µA. Input voltage pin. It should be decoupled with 1µF or greater capacitor. Feedback output voltage for adjustable device. Power-Good output. This open-drain output is low when output is out of regulation. LDO voltage regulator output pin. It should be decoupled with a 4.7µF or greater value low ESR ceramic capacitor. Ground connection pin. Pin Description 1 1 EN 2 N/A 3 2 3 N/A IN ADJ PG 4 4 OUT 5, 6, 7, 8 GND 2 Rev.E.01 AME, Inc. AME8844 750mA CMOS LDO n Ordering Information AME8844 x x x x xxx x Special Feature Output Voltage Number of Pins Package Type Operating Ambient Temperature Range Pin Configuration Pin Configuration Operating Ambient Temperature Range E: -40OC to 85OC Package Type Number Output Voltage of Pins A: 8 ADJ: 150: 180: 250: 330: Adjustable V=1.5V V=1.8V V=2.5V V=3.3V Special Feature (MSOP-8) A: 1. EN 2. IN 3. PG 4. OUT 5. GND 6. GND 7. GND 8. GND B: 1. EN 2. IN 3. ADJ 4. OUT 5. GND 6. GND 7. GND 8. GND Q: MSOP Z: Lead Free (MSOP-8) Rev.E.01 3 AME, Inc. AME8844 750mA CMOS LDO n Ordering Information Part Number AME8844AEQA150Z Marking* 8844 Lyww 8844 Myww 8844 Myww 8844 Dyww 8844 Ayww 8844 Byww 8844 Byww Output Voltage 1.50 Package MSOP-8 Operating Ambient Temperature Range - 40oC to 85oC - 40oC to 85oC - 40oC to 85oC - 40oC to 85oC - 40oC to 85oC - 40oC to 85oC - 40oC to 85oC AME8844AEQA180 1.80 MSOP-8 AME8844AEQA180Z 1.80 MSOP-8 AME8844AEQA250Z 2.50 MSOP-8 AME8844AEQA330Z 3.30 MSOP-8 AME8844BEQAADJ ADJ MSOP-8 AME8844BEQAADJZ ADJ MSOP-8 Note: yww represents the date code * A line on top of the first character represents lead free plating such as 8844 Please consult AME sales office or authorized Rep./Distributor for the availability of output voltage and package type. 4 Rev.E.01 AME, Inc. AME8844 750mA CMOS LDO n Absolute Maximum Ratings Parameter Input Voltage EN Voltage Output Voltage PG Voltage Output Current ESD Classification Maximum -0.3 to 8 -0.3 to 8 -0.3 to VIN + 0.3 -0.3 to VIN + 0.3 PD / (V IN - VOUT) B* Unit V V V V mA Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device. * HBM B: 2000~3999V 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 C C C o o n Thermal Information Parameter Thermal Resistance * (Junction to Case) Thermal Resistance (Junction to Ambient) Internal Power Dissipation Maximum Junction Temperature Solder Iron(10 Sec)** MSOP-8 Conductive Epoxy Package Die Attach Symbol θJC θJA PD Maximum 100 Unit o C/W 206 625 150 350 mW o o C C * Measure θJC on center of molding compound if IC has no tab. ** MIL-STD-202G 210F Rev.E.01 5 AME, Inc. AME8844 750mA CMOS LDO n Electrical Specifications VIN = VO(NOM) +2V, VEN = VIN, TA = 25OC unless otherwise noted Parameter Input Voltage Output Voltage Accuracy Dropout Voltage Output Current Current Limit Short Circuit Current Quiescent Current Ground Pin Current Line Regulation Load Regulation Over Temerature Shutdown Over Temerature Hysterisis V O Temperature Coefficient ADJ Input Bias Current Minimum Load Current ADJ Reference Voltage Power Supply Rejection Symbol VIN VO VDROPOUT IO ILIM ISC IQ IGND REGLINE REGLOAD OTS OTH TC IADJ Iload V REF PSRR IO=100mA CO=4.7µF ceramic f=10Hz to 100kHz IO=10mA IO=750mA T est Condition IO=1mA VO(NOM) =1.5V VO(NOM) =1.8V VO=VONOM -2.0% VO(NOM) >=2.0V VO>1.2V VO>1.2V VIN =VO(NOM) +1V, VO < 0.4V IO=0mA IO=1mA to 750mA V O < 2.0V IO=1mA 4.0 > VO > = 2.0V V IN =VO+1 to VO+2 4.0V