AME, Inc. High PSRR, 150mA CMOS LDO AME8833/8834 n General Description n Functional Block Diagram The AME8833 family of positive, linear regulators feature low quiescent current (50µA typ.) low dropout voltage and excellent PSRR, thus making them ideal for Telecommunications and other battery applications. The ultra-small SC-70 package is attractive for "Pocket" and "Hand Held" applications. AME8834’s output voltage can be adjusted with an external resister divider. OUT IN Overcurrent Shutdown Thermal Shutdown SHDN R1 These rugged devices have both Thermal Shutdown, and Current Fold-back to prevent device failure under the "Worst" of operating conditions. AMP + As an additional feature, the AME8833/8834 is stable with an output capacitance of just extended 0.22µF or greater. R2 n Features l l l l l l l l l l l l l l Stable with only 0.22µF output Cap Very Low Dropout Voltage Guaranteed 150mA Output Accurate to within 1.0% 50µA Quiescent Current Over-Temperature Shutdown Current Limiting Short Circuit Current Fold-back Excellent PSRR (Typ. 70dB) Power-Saving Shutdown Mode Ultra-small SC-70 and SOT-25-L Package Factory Pre-set Output Voltages Low Temperature Coefficient Input Voltage Range (2V - 5.5V) Vref GND n Typical Application IN SHDN IN OUT AME8833 GND OUT C2 C1 1µ µF 0.22µ µF n Applications l l l l l l l l l l Cellular Phones Instrumentation Portable Electronics Wireless Devices Cordless Phones PC Peripherals Battery Powered Widgets Electronic Scales Cameras Telecommunications OUT IN SHDN IN OUT AME8834 GND C1 R1 VREF C2 R2 1 AME, Inc. High PSRR, 150mA CMOS LDO AME8833/8834 n Pin Configuration SC-70 Top View 5 4 AME8833 1 2 SOT-25-L Top View AME 8833AEIV 1. VIN 2. GND 3. SHDN 4. NC 5. VOUT 3 5 AME8833 1 SC-70 Top View 5 4 2 AME 8833BEIV 1. VOUT 2. 3. 4. 5. GND VIN SHDN NC 3 5 4 AME8834 1 2 2 3 3 4 AME8833 1 2 AME 8833BEEV 1. VOUT 2. GND 3. VIN 4. SHDN 5. NC 3 SOT-25-L Top View SC-70 Top View 5 2 AME 8833AEEV 1. VIN 2. GND 3. SHDN 4. NC 5. VOUT SOT-25-L Top View AME8833 1 4 AME 8834AEIV 1. VIN 2. GND 3. SHDN 4. ADJ 5. VOUT 5 4 AME8834 1 2 3 AME 8834AEEV 1. VIN 2. GND 3. SHDN 4. ADJ 5. VOUT AME, Inc. High PSRR, 150mA CMOS LDO AME8833/8834 n Ordering Information AME8833 x x x x x x Special Feature Voltage Number of Pins Package Type Operating Temperature Range Pin Configuration Pin Configuration A: 1. 2. 3. 4. 5. VIN GND SHDN NC VOUT B: 1. 2. 3. 4. 5. VOUT GND VIN SHDN NC Operating Temperature Range E: -40OC to 85OC Package Type E: SOT-2X I: SC-70 Number of Pins V: 5 Voltage 180: 200: 250: 270: 280: 285: 300: 320: 330: V=1.8V V=2.0V V=2.5V V=2.7V V=2.8V V=2.85V V=3.0V V=3.2V V=3.3V Special Feature L: Low profile Y: Lead free & Low profile Z: Lead free 3 AME, Inc. High PSRR, 150mA CMOS LDO AME8833/8834 n Ordering Information AME8834 x x x x x x Special Feature Voltage Number of Pins Package Type Operating Temperature Range Pin Configuration Pin Configuration A: 1. 2. 3. 4. 5. 4 VIN GND SHDN ADJ VOUT Operating Temperature Range E: -40OC to 85OC Package Type E: SOT-2X I: SC-70 Number of Pins Voltage Special Feature V: 5 ADJ: Adjustable L: Low profile Y: Lead free & Low profile Z: Lead free AME, Inc. High PSRR, 150mA CMOS LDO AME8833/8834 n Ordering Information Part Number Marking Output Voltage Package Operating Temp. Range AME8833AEIV180 AWAw 1.8V SC-70 - 40oC to + 85oC AME8833AEIV250 AWBw 2.5V SC-70 - 40oC to + 85oC AME8833AEIV270 AXFw 2.7V SC-70 - 40oC to + 85oC AME8833AEIV280 AWDw 2.8V SC-70 - 40oC to + 85oC AME8833AEIV285 AVZw 2.85V SC-70 - 40oC to + 85oC AME8833AEIV300 AWEw 3.0V SC-70 - 40oC to + 85oC AME8833AEIV320 AXGw 3.2V SC-70 - 40oC to + 85oC AME8833AEIV330 AWCw 3.3V SC-70 - 40oC to + 85oC AME8833AEEV180L AWMww 1.8V SOT-25 - 40oC to + 85oC AME8833AEEV250L AWNww 2.5V SOT-25 - 40oC to + 85oC AME8833AEEV270L AXEww 2.7V SOT-25 - 40oC to + 85oC AME8833AEEV280L AWOww 2.8V SOT-25 - 40oC to + 85oC AME8833AEEV285L AWPww 2.85V SOT-25 - 40oC to + 85oC AME8833AEEV300L AWQww 3.0V SOT-25 - 40oC to + 85oC AME8833AEEV330L AWRww 3.3V SOT-25 - 40oC to + 85oC AME8833AEIV180Z AWAw 1.8V SC-70 - 40oC to + 85oC AME8833AEIV250Z AWBw 2.5V SC-70 - 40oC to + 85oC AME8833AEIV280Z AWDw 2.8V SC-70 - 40oC to + 85oC AME8833AEIV285Z AVZw 2.85V SC-70 - 40oC to + 85oC AME8833AEIV300Z AWEw 3.0V SC-70 - 40oC to + 85oC AME8833AEIV330Z AWCw 3.3V SC-70 - 40oC to + 85oC AME8834AEIVADJ AWJw Adjustable SC-70 - 40oC to + 85oC Note: w represents date code ( A thru Z ) : 2 work weeks per character. Please consult AME sales office or authorized Rep./Distributor for other output voltage and package type availability. 5 AME, Inc. High PSRR, 150mA CMOS LDO AME8833/8834 n Absolute Maximum Ratings Parameter Maximum Unit 6 V Output Current PD / (VIN - VO) mA Output Voltage GND - 0.3 to V IN + 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 Rating - 40 to + 85 o - 40 to + 125 o Ambient Temperature Range Junction Temperature Unit C C n Thermal Information Parameter 6 Maximum Unit Thermal Resistance (θja) SOT-25 260 o Thermal Resistance (θjc ) SOT-25 81 o Thermal Resistance (θja) SC-70 331 o Thermal Resistance (θjc ) SC-70 224 o C/W C/W C/W C/W Maximum Junction Temperature 150 o Maximum Lead Temperature (10 Sec) 300 o C C AME, Inc. High PSRR, 150mA CMOS LDO AME8833/8834 n Electrical Specifications VIN=VOUT+0.5V, VSHDN=VIN, TA = 25OC,CIN=COUT=1µF, AME8834 is tested with 2.45V output, unless otherwise noted Parameter Input Voltage Test Condition Symbol Min V IN o AME8833 IO=0.1mA AME8834 Output Voltage Accuracy VO AME8833 IO=150mA 25 C o V DROPOUT Current Limit ILIM Foldback Current IFB Units 5.5 V -1 1 -2 2 25oC -1.5 1.5 -40oC~85oC -2.5 2.5 25oC -2 2 -40 C~85 C -2.5 2.5 25oC -2 2 o o -40oC~85oC V OUT >= 2.0V IO=150mA Typ -40 C~85 C AME8834 Dropout Voltage o Max Note1 V OUT < 2.0V V OUT=V O(NOM) -2% V O>800mV -2.5 1000 mA V O=0V 80 mA µA µA IQ V IN =5V, IO=0mA 60 Ground Pin Current IGND V IN =5V, IO =1mA to 150mA 50 IO=0.1mA, V OUT>2.0V REG LINE V IN =V OUT+0.5V to 5.5V IO=0.1mA, V OUT<=2.0V V IN =V OUT+1V to 5.5V V OUT>2.0V Load Regulation REGLOAD IO=0.1 to 150mA V IN =V OUT+0.5V V OUT<=2.0V V IN =V OUT+1V Over Temperature Shutdown Over Temperature Hysterisis V O Temperature Coefficient Power Supply Rejection Output Voltage Noise SHDN Input Threshold -0.2 0.2 % -0.4 0.4 -1 1 % -2 2 137 o C OTH 23 o C TC 30 ppm/ oC f=1kHz 70 dB Co=0.22µF 30 µVrms OTS PSRR eN RO=100Ω CO=0.22µF f=10Hz to 100kHz IO=10mA V SHDNH V SHDN = 0.8 x V IN V SHDNL V SHDN = 0.6V SHDN Input Bias Current Shutdown Supply Current ISD Shutdown Output Voltage ADJ Refernece Voltage (AME8834) ADJ Input Bias Current (AME8834) V O,SD Note1:VIN(min)=VOUT+VDROPOUT mV 200 Quiescent Current Line Regulation % 2.5 500 150 % 0.8xV IN 0 o 0.01 o V IN = 5V EN = 0V or 5V TA= 25 C TA= 85 C 0.1 V IN =5V TA=25oC 0.5 o V O=0V TA=85 C Output Loading<= 1200 ohm, V=0V V REF Vin V 0.6 V µA 1 1 0 1.206 0.4 1.225 1.243 V IN =5.5V TA= 25oC 0.05 V ADJ =1.3V TA= 85oC 0.1 0.1 µA V V µA 7 AME, Inc. AME8833/8834 High PSRR, 150mA CMOS LDO n Detailed Description n Shutdown The AME8833/8834 family of CMOS regulators contain a PMOS pass transistor, voltage reference, error amplifier, over-current protection, and thermal shutdown. 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. 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 150mA. During thermal shutdown, the output voltage remains low. Normal operation is restored when the junction temperature drops below 120oC. The AME8833/8834 switches from voltage mode to current mode when the load exceeds the rated output current. This prevents over-stress. The AME8833/8834 also incorporates current foldback to reduce power dissipation 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. n External Capacitors The AME8833/8834 is stable with an output capacitor to ground of 0.22µF 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. A second capacitor is recommended between the input and ground to stabilize Vin. The input capacitor should be at least 1µF to have a beneficial effect. A larger capacitor improves the AC ripple rejection, but also makes the output come up slowly. This "Soft" turnon 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. 8 n Adjustable Version AME8834 features a user-adjustable output through an external feedback resister divider. To set the output of AME8834 use the following equation: VOUT=VADJ(1+R1/R2) VADJ=1.225V, use 1% or better resistors AME, Inc. High PSRR, 150mA CMOS LDO AME8833/8834 Input Current vs. Input Voltage Input Current vs. Temperature 57.5 Input Current @ no load (uA) 70 Input Current (uA) 60 50 40 30 20 10 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 57.0 56.5 56.0 55.5 55.0 54.5 54.0 -45 6.0 -5 Input Voltage (V) 25 55 85 Temperature (oC) Dropout Voltage vs. Load Output Voltage vs. Temperature 300 2.852 85o C 2.850 200 55o C 25o C 150 - 5oC - 45oC 100 Output Voltage (V) Dropout Voltage (mV) 250 50 2.848 2.846 2.844 2.842 2.840 0 0 30 60 90 120 2.838 -45 150 -5 55 Temperature Load Current (mA) Output Voltage vs. Load Current 85 (oC) Output Voltage vs. Input Voltage 2.855 3.0 2.5 Output Voltage (V) 2.850 Output Voltage (V) 25 2.845 2.840 2.835 2.0 1.5 1.0 0.5 2.830 0 30 60 90 Load Current (mA) 120 150 0.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 Input Voltage (V) 9 AME, Inc. High PSRR, 150mA CMOS LDO AME8833/8834 Exiting Shutdown Waveform Entering Shutdown Waveform Shutdown Voltage 2V / DIV 2V / DIV Shutdown Voltage VOUT=2.85V RLOAD=50Ω Output Voltage RLOAD=50Ω Output Voltage 10 µS / DIV 10 µS / DIV Output Noise Spectral Density vs. Frequency Line Transient Response Output noise (nV/Hz) 1.0E+04 VIN =3.0V , I OUT = 0 to 50mA 1.0E+03 VOUT , 10mV/div 1.0E+02 1.0E+01 0.01 0.1 1 10 100 1000 200uS/div FREQ (KHz) Load Transient Response PSRR vs. Frequency 75 70 65 PSRR (dB) VIN = 3.5 to 4.0V VOUT , 1mV/div 60 55 50 45 40 35 30 0.01 1mS/div 10 0.1 1 10 Frequency (KHz) 100 1000 AME, Inc. High PSRR, 150mA CMOS LDO AME8833/8834 Dropout Voltage vs. Output Voltage Region of Stable Cout ESR vs. Load Current 290 1.E+03 1.E+02 250 Cout ESR (ohm) Dropout Voltage (mV) 270 230 210 190 Stable Region 1.E+00 1.E-01 170 150 2.0 1.E+01 2.5 3.0 3.5 4.0 Output Voltage (V) 4.5 5.0 1.E-02 0 20 40 60 80 100 120 Load Current (mA) 11 AME, Inc. High PSRR, 150mA CMOS LDO AME8833/8834 n Package Dimension SC-70 Top View Side View D 0.15(0.006) e1 A D A E E1 C e See Detail A B .10(0.004) M CAB b Front View A2 A SEATING PLANE .10(0.004) A1 C Detail A C SECTION A-A £ c 1 (b) b1 c1 c .15(.0059) H GAGE PLANE BASE METAL c £ L 12 MILLIMETERS INCHES MIN MAX MIN MAX A 0.80 1.10 0.031 0.043 A1 0.00 0.10 0.000 0.004 A2 0.80 1.00 0.031 0.040 b 0.15 0.30 0.006 0.012 b1 0.15 0.25 0.006 0.010 c 0.08 0.25 0.003 0.010 c1 0.08 0.20 0.003 0.008 D 1.90 2.15 0.074 0.084 E 2.00 2.20 0.078 0.086 E1 1.15 1.35 0.045 0.055 C E/2 E1/2 0.15(0.006) SYMBOLS e 0.65BSC 0.0255BSC e1 1.30BSC 0.0512BSC L 0.26 o è1 0 è2 4o 0.46 8 o 10o 0.010 0 o 4o 0.018 8o 10 o NOTE: 1. Controlling Dimension : Millimeter, converted inch dimension are not necessarily exact. 2. Dimensiioning and tolerancing per ansi Y14.5m-1994. 3. Dimension "d" does not include mold flash,protrusion or gate burr, mold flash,protrusion or gate burr shall not exceed 0.15mm(0.006") per end. Dimension E1 do not include inter-lead flash or protrusion, inter-lead flash or protrusion shall not exceed 0.15mm(0.006") per side. 4. The package top be smaller than the package bottom. Dimension D and E1 are determined at outermost extremes of the plastic body exclusive of mold flash, tie bar burrs, gate burrs and interlead flash, but including any mismatch between the top and bottom of the plastic body. AME, Inc. High PSRR, 150mA CMOS LDO AME8833/8834 n Package Dimension SOT-25-L Top View Side View SYMBOLS E £ c 1 MAX MIN MAX A+A1 1.00 1.30 0.0394 0.0512 b 0.30 0.55 0.0118 0.0217 D 2.70 3.10 0.1063 0.1220 E 1.40 1.80 0.0551 0.0709 H L e è1 Front View INCHES MIN e S1 MILLIMETERS 2.60 3.00 0.37BSC 0o 10 o 0.95BSC 0.07480 BSC 0.10236 0.11811 0.0146BSC 0o 10o 0.0374BSC A S1 1.90 BSC b A1 H L D 13 www.ame.com.tw E-Mail: [email protected] 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. , February 2004 Document: 2029-DS8833/8834-C Corporate Headquarter U.S.A. (Subsidiary) AME, Inc. Analog Microelectronics, Inc. 2F, 189 Kang-Chien Road, Nei-Hu Distric Taipei 114, Taiwan, R.O.C. 3100 De La Cruz Blvd., Suite 201 Santa Clara, CA. 95054-2046 Tel: 886 2 2627-8687 Fax: 886 2 2659-2989 Tel : (408) 988-2388 Fax: (408) 988-2489