AMC DOC. #:AMC8878_D (LF) March 2004 AMC8878/8879 ADD MICROTECH CORP. LOW NOISE 150mA LOW DROPOUT REGULATOR DESCRIPTION FEATURES Low output noise: 30µVRMS Industry standard’2982 pin assignment (AMC8878) Output voltage precision of ±1.4% accuracy Very low dropout voltage: 50mV/50mA and 165mV/150mA 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 (AMC8878) and TK111xxS (AMC8879) series. The AMC8878/8879 series 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 AMC8878/8879 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. Both AMC8878 and AMC8879 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 5 VIN SHDN 1 GND 2 GND 2 SHDN 3 4 BP 4 VOUT BP 3 AMC8879 AMC8878 5-Pin Plastic SOT-23 Surface Mount (Top View) ORDER INFORMATION Plastic SOT-23 5-pin 0OC ≤ TA≤ 70OC AMC8878-X.XDBT 0OC ≤ TA≤ 70OC AMC8878-X.XDBTF(Lead Free) Temperature Range Plastic SOT-23 5-pin AMC8879-X.XDBT AMC8879-X.XDBTF(Lead Free) DBT DBT EXPANDED ORDER INFORMATION Device Name Output Voltage AMC887ڤ-2.0DBT AMC887ڤ-2.5DBT AMC887ڤ-2.8DBT AMC887ڤ-2.85DBT AMC887ڤ-3.0DBT AMC887ڤ-3.2DBT AMC887ڤ-3.3DBT AMC887ڤ-5.0DBT 2.0V 2.5V 2.8V 2.85V 3.0V 3.2V 3.3V 5.0V Copyright 2002, ADD Microtech Corp. Symbolization AMC8878 AB20 AB25 AB28 AB2U AB30 AB32 AB33 AB50 1 AMC8879 AC20 AC25 AC28 AC2U AC30 AC32 AC33 AC50 www.addmtek.com AMC8878/8879 AMC DOC. #: AMC8878_D (LF) March 2004 LOW NOISE 150mA LOW DROPOUT REGULATOR TYPICAL APPLICATION VIN 2.5V to 6V VOUT CIN 1µF AMC8878 AMC8879 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 AMC8878/8879 AMC DOC. #: AMC8878_D (LF) March 2004 LOW NOISE 150mA 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 AMC8878/8879 AMC DOC. #: AMC8878_D (LF) March 2004 LOW NOISE 150mA LOW DROPOUT REGULATOR RECOMMENDED OPERATING CONDITIONS Recommended Operating Conditions Parameter Symbol Min. Typ. Max. Input Voltage VIN 2.5 6.5 Load Current IO 5 150 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. 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 Output Voltage Noise Shutdown Input Threshold High Shutdown Input Threshold Low Shutdown Supply Current Min -1.4 -3 150 IOUT = 0mA, TA = +25 OC IOUT = 0 to 150mA IQ ∆VOI ∆VOL en VSIH VSIL IQ(SHDN) Typ. Max +1.4 +2 VIN = (VOUT + 0.1V) to 6.5V, IOUT = 1mA -0.15 IOUT = 0 to 120mA, COUT = 1µF f = 10Hz - 100KHz, CBP = 0.01µF COUT = 10µF COUT = 100µF VIN = 2.5V to 5.5V VIN = 2.5V to 5.5V VOUT = 0V Shutdown Input Bias Current ISHDN VSHDN = VIN Shutdown Exit Delay tdelay CBP = 0.1µF, COUT = 1µF, No load Thermal Shutdown Temperature TSHDN 1.6 1.7 1.1 50 165 0 0.01 30 20 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 % mA 10 µA 120 mV 0.15 0.04 %/V %/mA µVRMS 2.0 O Units mA 160 IOUT = 0mA IOUT = 150mA IOUT = 1mA IOUT = 50mA IOUT = 150mA Dropout Voltage Line Regulation Load Regulation AMC8878/8879 Test Conditions 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 AMC8878/8879 AMC DOC. #: AMC8878_D (LF) March 2004 LOW NOISE 150mA 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 3.5 2 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 AMC8878/8879 AMC DOC. #: AMC8878_D (LF) March 2004 LOW NOISE 150mA 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 45 Output Current (mA) 105 Temperature ( C) Load Transient Response with IO=150mA COUT=1uF 75mA/ Div COUT=1uF IO VO IO 50mV/ Div 25mA/ Div 50mV/ Div 85 O Load Transient Response with IO=50mA VO Time=2ms Time=2ms Line Transient Response, With IO=50mA Entering Shutdown, No Load 1V/ Div 2V/ Div 0.5V/ Div 1V/ Div VOUT=3.3V Time=1ms Copyright 2002, ADD Microtech Corp. 65 VSHDN VOUT Time=2ms 6 www.addmtek.com AMC8878/8879 AMC DOC. #: AMC8878_D (LF) March 2004 LOW NOISE 150mA 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 OC, Using plused ON time,unless otherwise noted. Shutdown Exit Delay, CBP= 2pF 2V/ Div VSHDN VOUT 1V/ Div 1V/ Div 2V/ Div Shutdown Exit Delay, CBP= 0.1uF IO=50mA VOUT=3..3V Time=2ms Copyright 2002, ADD Microtech Corp. VSHDN VOUT IO=50mA VOUT=3..3V Time=200µs 7 www.addmtek.com AMC8878/8879 AMC DOC. #: AMC8878_D (LF) March 2004 LOW NOISE 150mA 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 AMC8878/8879 AMC DOC. #: AMC8878_D (LF) March 2004 LOW NOISE 150mA 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