AMC DOC. #:AMC8878_A (LF) Jun 2004 ® AMC8877 ADD MICROTECH CORP. LOW NOISE 300mA LOW DROPOUT REGULATOR DESCRIPTION FEATURES Low output noise: 30µVRMS Industry standard’2982 pin assignment (AMC8877) Output voltage precision of ±1.4% accuracy Very low dropout voltage: 50mV/50mA, 165mV/150mA & 450mV/300mA On/Off control Low IQ: 1.6µA Short circuit protection Internal thermal overload protection Available in surface mount 5-pin SOT-23 package. Enhanced pin-to-pin Compatible to the MAX8878 (AMC8877). The AMC8877 product is a low noise, low dropout linear regulator operating from 2.5V to 6.5V input. An external capacitor can be connected to the bypass pin to lower the output noise level to 30µVRMS. Designed with a P-channel MOSFET output transistor, the AMC8877 consume a low supply current, independent of the load current and dropout voltage. The internal thermal shut down circuit will limits the junction temperature to below 150°C. Other features include thermal protection, reverse battery protection and output current limit. The AMC8877 come in a miniature 5-pin SOT-23 package. APPLICATIONS PACKAGE PIN OUT Cellular Telephones Battery Powered Systems Hand-Held Instruments Pagers Personal Data Assistance (PDA) PCMCIA Cards VIN 1 5 VOUT 4 BP GND 2 SHDN 3 AMC8877 5-Pin Plastic SOT-23 Surface Mount (Top View) ORDER INFORMATION Plastic SOT-23 Temperature DBT Range 5-pin O O 0 C ≤ TA≤ 70 C AMC8877-X.XDBT 0OC ≤ TA≤ 70OC AMC8877-X.XDBTF(Lead Free) EXPANDED ORDER INFORMATION Device Name Output Voltage AMC887ڤ-1.8DBT AMC887ڤ-2.0DBT AMC887ڤ-2.5DBT AMC887ڤ-2.8DBT AMC887ڤ-2.85DBT AMC887ڤ-3.0DBT AMC887ڤ-3.2DBT AMC887ڤ-3.3DBT AMC887ڤ-5.0DBT 1.8V 2.0V 2.5V 2.8V 2.85V 3.0V 3.2V 3.3V 5.0V Copyright © 2002, ADD Microtech Corp. Symbolization AMC8877 CG18 CG20 CG25 CG28 CG2U CG30 CG32 CG33 CG50 1 www.addmtek.com AMC8877 AMC DOC. #: AMC8877_A (LF) Jun 2004 LOW NOISE 300mA LOW DROPOUT REGULATOR TYPICAL APPLICATION VIN 2.5V to 6V VOUT CIN 1µF AMC8877 COUT 1µF ON OFF CBP 0.01µF ABSOLUTE MAXIMUM RATINGS (Note) 12V Input Voltage, VIN 150 OC Operating Junction Temperature, TJ Storage Temperature Range -65 OC to +150 OC Lead Temperature (soldering, 10 seconds) +260 OC O Power Dissipation, PD @ TA = 70 C 150 mW Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of the specified terminal. THERMAL DATA DB PACKAGE: Thermal Resistance from Junction to Ambient, θ JA 220 OC /W Junction Temperature Calculation: TJ = TA + (PD × θ JA). The θJA numbers are guidelines for the thermal performance of the device/pc-board system. Connect the ground pin to ground using a large pad or ground plane for better heat dissipation. All of the above assume no ambient airflow. Maximum Power Calculation: T – TA(MAX) PD(MAX)= J(MAX) θJA TJ(OC): Maximum recommended junction temperature TA(OC): Ambient temperature of the application θJA(OC /W): Junction-to-junction temperature thermal resistance of the package, and other heat dissipating materials. The maximum power dissipation for a single-output regulator is : PD(MAX) = [(VIN(MAX) - VOUT(NOM))] × IOUT(NOM) + VIN(MAX) × IQ Where: VOUT(NOM) = the nominal output voltage IOUT(NOM) = the nominal output current, and IQ = the quiescent current the regulator consumes at IOUT(MAX) VIN(MAX) = the maximum input voltage Then θJA = (+150 OC – TA)/PD Copyright © 2002, ADD Microtech Corp. 2 www.addmtek.com AMC8877 AMC DOC. #: AMC8877_A (LF) Jun 2004 LOW NOISE 300mA LOW DROPOUT REGULATOR BLOCK DIAGRAM VIN Reverse Battery Protection SHDN Shutdown And Power-On Control Thermal Sensor Current Limit VOUT VREF GND BP PIN DESCRIPTION Pin Number AMC8878 AMC8879 1 5 2 2 Pin Name Pin Function VIN GND Input Ground Logic control shutdown pin; HI: Device is ON, LO: Device is OFF Noise bypass pin; The output noise level can be reduced to 30µVRMS by connecting external capacitors Output 3 1 SHDN 4 3 BP 5 4 VOUT Copyright © 2002, ADD Microtech Corp. 3 www.addmtek.com AMC8877 AMC DOC. #: AMC8877_A (LF) Jun 2004 LOW NOISE 300mA LOW DROPOUT REGULATOR RECOMMENDED OPERATING CONDITIONS Recommended Operating Conditions Parameter Symbol Min. Typ. Max. Input Voltage VIN 2.5 6.5 Load Current IO 5 300 Input Capacitor (VIN to GND) 1.0 Output Capacitor with ESR of 10Ω max., (VOUT to GND) 1.0 Units V mA µF µF Note: 1. CIN: A 1.0 µF capacitor (or larger) should be placed between VIN to GND. 2. COUT: A 1.0 µF (or larger) capacitor is recommended between VOUT and GND for stability and improving the regulator’s transient response. The ESR (Effective Series Resistance.) of this capacitor has no effect on regulator stability, but low ESR capacitors improve high frequency transient response. The value of this capacitor may be increased without limit, but values larger than 10uF tend to increase the settling time after a step change in input voltage or output current. The part may oscillate without the capacitor. Any type of capacitor can be used, but not Aluminum electrolytics when operating below -25 OC, The capacitance may be increased without limit. ELECTRICAL CHARACTERISTICS Unless otherwise specified, these specifications apply over the operating ambient temperature of 0°C to +70 °C with VIN = VOUT(NOMIAL) + 0.5V, and are for DC characteristics only. (Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient temperature.) Parameter Symbol Output Voltage Accuracy ∆VOUT Maximum Output Current IOUT Current Limit ILIMIT Ground Pin Current IQ Dropout Voltage VDROP Line Regulation Load Regulation Ripple Rejection Output Voltage Noise Shutdown Input Threshold High Shutdown Input Threshold Low Shutdown Supply Current ∆VOI ∆VOL PSRR en VSIH VSIL AMC8877 Test Conditions Min -1.4 -3 IOUT = 10mA, TA = +25 OC IOUT = 10 to 300mA Typ. Max +1.4 +2 300 VIN = (VOUT + 0.1V) to 6.5V, IOUT = 1mA -0.15 IOUT = 10 to 300mA, COUT = 10µF f=100Hz, IL=100uA f = 10Hz - 100KHz, CBP = 0.01µF COUT = 10µF COUT = 100µF VIN = 2.5V to 5.5V VIN = 2.5V to 5.5V IQ(SHDN) VOUT = 0V Shutdown Input Bias Current ISHDN VSHDN = VIN Shutdown Exit Delay tdelay CBP = 0.1µF, COUT = 1µF, No load Thermal Shutdown Temperature TSHDN mA 1.6 1.7 50 165 450 0 40 50 30 20 9 9 120 300 650 0.15 80 TA = +25 OC TA = +85 OC TA = +25 OC TA = +85 OC 0.01 0.2 0.01 0.5 TA = +25 OC 6 6 +150 TA = +85 C µA mV %/V mV dB µVRMS 2.0 O % mA 330 IOUT = 10mA IOUT = 300mA IOUT = 50mA IOUT = 150mA IOUT = 300mA Units 0.4 1 100 V V µA nA ms O C Note: 1. Current limit is measured at constant junction temperature, using pulse ON time. 2. Dropout is measured at constant junction temperature, using pulse ON time, and criterion is VOUT inside target value ± 2 %. 3. Regulation is measured at constant junction temperature, using pulsed ON time. Copyright © 2002, ADD Microtech Corp. 4 www.addmtek.com AMC8877 AMC DOC. #: AMC8877_A (LF) Jun 2004 LOW NOISE 300mA LOW DROPOUT REGULATOR Characterization Curves VIN=VOUT(NOMINAL) + 0.5V or 2.5V(whichever is greater), CIN=1uF, COUT=1uF,CBP=0.01uF, TA=+25 O C, ,Using plused ON time,unless otherwise noted. Quiescent Current v.s. Output Current Output Voltage v.s. Output Current 2 3.5 Quiescent Current (µA) Output Voltage(V) VOUT=3.3V 3.4 3.3 3.2 3.1 3 2.9 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 2.8 0 20 40 60 80 100 120 0 140 25 50 75 100 125 150 Output Current (mA) Output Current (V) Output Voltage v.s. Input Voltage Quiescent Current v.s. Input Voltage IO=10mA 3.4 VOUT=3.3V 2.4 Quiescent Current (µA) Output Voltage (V) 3.5 3.3 IO=150mA 3.2 3.1 2.2 2 IO=150mA 1.8 1.6 1.4 IO=10mA 1.2 3 4 4.5 5 5.5 6 1 Input Voltage (V) 4 4.5 5 5.5 6 Input Voltage (V) Output Voltage v.s. Temperature Quiescent Current v.s. Temperature 2.4 VOUT=3.3V Quiescent Current (µA) Output Voltage (V) 3.48 3.44 IO=10mA 3.4 3.36 3.32 3.28 3.24 IO=150mA 3.2 2.2 2 1.8 1.6 1.4 1.2 1 25 45 65 85 105 25 65 85 105 Temperature (OC) Temperature (OC) Copyright © 2002, ADD Microtech Corp. 45 5 www.addmtek.com AMC8877 AMC DOC. #: AMC8877_A (LF) Jun 2004 LOW NOISE 300mA LOW DROPOUT REGULATOR Characterization Curves (Continued)) VIN=VOUT(NOMINAL) + 0.5V or 2.5V(whichever is greater), CIN=1uF, COUT=1uF,CBP=0.01uF, TA=+25 O C, ,Using plused ON time,unless otherwise noted. Dropout Voltage v.s. Temperature Dropout Voltage v.s. Output Current 0.3 IO=150mA 0.22 Dropout Voltage (V) Dropout Voltage (V) 0.24 0.2 0.18 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0.25 0.2 0.15 0.1 0.05 0 0 25 50 75 100 125 150 0 25 Output Current (mA) 85 105 Temperature ( C) Load Transient Response with IO=150mA 75mA/ Div COUT=1uF 25mA/ Div 65 O Load Transient Response with IO=50mA IO 50mV/ Div VO 50mV/ Div 45 COUT=1uF IO VO Time=2ms Time=2ms ILOAD = 300mA VIN = 3V Load No Load Copyright © 2002, ADD Microtech Corp. 6 www.addmtek.com AMC8877 AMC DOC. #: AMC8877_A (LF) Jun 2004 LOW NOISE 300mA LOW DROPOUT REGULATOR 300mA (Vo~Vp) 300mA (Vo~Vp) 3.16V (Vo~-Vp) 3.12V (Vo~-Vp) Line Transient Response, With IO=50mA Entering Shutdown, No Load 0.5V/ Div Time=1ms 2V/ Div VOUT 1V/ Div 2V/ Div Shutdown Exit Delay, CBP= 2pF VSHDN IO=50mA VOUT=3..3V Time=2ms Copyright © 2002, ADD Microtech Corp. VOUT Time=2ms Shutdown Exit Delay, CBP= 0.1uF 1V/ Div VSHDN 1V/ Div 1V/ Div 2V/ Div VOUT=3.3V VSHDN VOUT IO=50mA VOUT=3..3V Time=200µs 7 www.addmtek.com AMC8877 AMC DOC. #: AMC8877_A (LF) Jun 2004 LOW NOISE 300mA LOW DROPOUT REGULATOR 5-Pin SOT-23 SEATING PLANE D L E MIN TYP MAX MIN TYP MAX A - - 0.057 - - 1.45 A1 - - 0.006 - - 0.15 L1 E1 A2 0.035 c e L2 e1 GAUGE PLANE M b 0.012 c 0.003 A1 M 8 0.90 1.15 1.30 0.020 0.30 - 0.50 - 0.009 0.08 - 0.22 2.90 BSC E 0.110 BSC 2.80 BSC E1 0.063`BSC 1.60 BSC e 0.037 BSC 0.95 BSC 0.075BSC 0.012 0.018 1.90 BSC 0.024 0.30 0.45 L1 0.024 REF 0.60 REF L2 0.010 BSC 0.25 BSC °M Copyright © 2002, ADD Microtech Corp. 0.051 - 0.114 BSC L A2 0.045 D e1 A MILLIMETERS INCHES b 5° 10° 15° 5° 10° 0.60 15° www.addmtek.com AMC8877 AMC DOC. #: AMC8877_A (LF) Jun 2004 LOW NOISE 300mA LOW DROPOUT REGULATOR IMPORTANT NOTICE ADD Microtech (ADDM) reserves the right to make changes to its products or to discontinue any integrated circuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. A few applications using integrated circuit products may involve potential risks of death, personal injury, or severe property or environmental damage. ADDM integrated circuit products are not designed, intended, authorized, or warranted to be suitable for use in life-support applications, devices or systems or other critical applications. Use of ADDM products in such applications is understood to be fully at the risk of the customer. In order to minimize risks associated with the customer’s applications, the customer should provide adequate design and operating safeguards. ADDM assumes to no liability to customer product design or application support. ADDM warrants the performance of its products to the specifications applicable at the time of sale. U.S. Asia Pacific region ADD Microtech Inc. 492 Altamont Drive Milpitas, CA 95035 ADD Microtech Corp 13F, NO. 287, Sec. 3, Nan Jing E. Rd., Taipei, Taiwan 105 T E L : (408) 9410420 FA X : (408) 9410864 T E L : 2-27132800 FA X : 2-27132805 Copyright © 2002, ADD Microtech Corp. 9 www.addmtek.com