MAX8868EUK28+TG002

19-1302; Rev 3; 7/02 Low-Noise, Low-Dropout, 150mA Linear Regulators in SOT23 ____________________________Features ♦ Low Output Noise: 30µVRMS ________________________Applications _________________Ordering Information Cellular Telephones Modems Cordless Telephones Hand-Held Instruments PCS Telephones Palmtop Computers PCMCIA Cards Electronic Planners ♦ Low 55mV Dropout at 50mA Output (165mV at 150mA output) ♦ Low 85µA No-Load Supply Current ♦ Low 100µA Operating Supply Current (Even In Dropout) ♦ Thermal-Overload and Short-Circuit Protection ♦ Reverse Battery Protection ♦ Output Current Limit ♦ Preset Output Voltages (±1.4% Accuracy) ♦ 10nA Logic-Controlled Shutdown PART** TEMP RANGE MAX8867EUKxy-T -40°C to +85°C SOT23-5 Regular MAX8867EZKxy-T -40°C to +85°C SOT23-5 Thin MAX8867C/Dxy PIN-PACKAGE 0°C to +70°C Dice* MAX8868EUKxy-T -40°C to +85°C SOT23-5 Regular MAX8868EZKxy-T -40°C to +85°C SOT23-5 Thin MAX8868C/Dxy 0°C to +70°C Dice* *Dice are tested at TA = +25°C only. **xy is the output voltage code (see Expanded Ordering Information table at end of data sheet). __________Typical Operating Circuit __________________Pin Configuration TOP VIEW INPUT 2.5V TO 6.5V IN CIN 1µF OUT MAX8867 MAX8868 ON COUT 1µF OUTPUT PRESET 2.5V TO 5.0V 150mA SHDN 1 GND 2 5 BP 4 OUT MAX8867 MAX8868 SHDN OFF CBP 0.01µF BP GND IN 3 SOT23-5 ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX8867/MAX8868 _______________General Description The MAX8867/MAX8868 low-noise, low-dropout linear regulators operate from a 2.5V to 6.5V input and deliver up to 150mA. Typical output noise for these devices is just 30µVRMS, and typical dropout is only 165mV at 150mA. The output voltage is preset to voltages in the range of 2.5V to 5.0V, in 100mV increments. The MAX8867 and MAX8868 are pin-compatible with the MAX8863 and MAX8864, except for the BP pin. Designed with an internal P-channel MOSFET pass transistor, the MAX8867/MAX8868 maintain a low 100µA supply current, independent of the load current and dropout voltage. Other features include a 10nA logiccontrolled shutdown mode, short-circuit and thermalshutdown protection, and reverse battery protection. The MAX8868 also includes an auto-discharge function, which actively discharges the output voltage to ground when the device is placed in shutdown. Both devices come in regular and thin 5-pin SOT23 packages. MAX8867/MAX8868 Low-Noise, Low-Dropout, 150mA Linear Regulators in SOT23 ABSOLUTE MAXIMUM RATINGS IN to GND ....................................................................-7V to +7V Output Short-Circuit Duration ............................................Infinite SHDN to GND..............................................................-7V to +7V SHDN to IN ...............................................................-7V to +0.3V OUT, BP to GND ..........................................-0.3V to (VIN + 0.3V) Continuous Power Dissipation (TA = +70°C) SOT23-5 Regular (derate 7.1mW/°C above +70°C) ....571mW SOT23-5 Thin (derate 9.1mW/°C above +70°C) ..........727mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C θJB (Regular)..................................................................140°C/W θJB (Thin)........................................................................110°C/W Storage Temperature.........................................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (VIN = VOUT(NOMINAL) + 0.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER Input Voltage (Note 2) SYMBOL CONDITIONS VIN IOUT = 0mA, TA = +25°C Output Voltage Accuracy IOUT = 0mA to 120mA Maximum Output Current Current Limit Ground-Pin Current MAX UNITS 2.5 TYP 6.5 V -1.4 1.4 -3 2 150 ILIM IQ Dropout Voltage (Note 2) 160 85 IOUT = 150mA 100 IOUT = 1mA 1.1 IOUT = 50mA 55 IOUT = 150mA 165 ∆VLNR VIN = (VOUT + 0.1V) to 6.5V, IOUT = 1mA Load Regulation ∆VLDR IOUT = 0mA to 120mA, COUT = 1µF en f = 10Hz to 100kHz, CBP = 0.01µF VIH VIN = 2.5V to 5.5V VIL VIN = 2.5V to 5.5V -0.15 % mA 390 No load Line Regulation Output Voltage Noise MIN mA 180 µA 120 mV 0 0.15 %/V 0.01 0.04 %/mA COUT = 10µF 30 COUT = 100µF 20 µVRMS SHUTDOWN SHDN Input Threshold SHDN Input Bias Current ISHDN Shutdown Supply Current IQ, SHDN VSHDN = VIN VOUT = 0V Shutdown Exit Delay (Note 3) CBP = 0.1µF, COUT = 1µF, no load Shutdown Discharge Resistance MAX8868 only 2 2.0 0.4 TA = +25°C 0.01 TA = +85°C 0.5 TA = +25°C 0.01 TA = +85°C 0.2 TA = +25°C 30 TA = -40°C to +85°C 100 1 150 300 300 _______________________________________________________________________________________ V nA µA µs Ω Low-Noise, Low-Dropout, 150mA Linear Regulators in SOT23 (VIN = VOUT(NOMINAL) + 0.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS THERMAL PROTECTION Thermal-Shutdown Temperature TSHDN 155 °C Thermal-Shutdown Hysteresis ∆TSHDN 15 °C Note 1: Limits are 100% production tested at TA = +25°C. Limits over the operating temperature range are guaranteed through correlation using Statistical Quality Control (SQC) Methods. Note 2: The dropout voltage is defined as VIN - VOUT, when VOUT is 100mV below the value of VOUT for VIN = VOUT + 0.5V. Note 3: Time needed for VOUT to reach 95% of final value. __________________________________________Typical Operating Characteristics (VIN = VOUT(NOMINAL) + 0.5V, CIN = 1µF, COUT = 1µF, CBP = 0.01µF, TA = +25°C, unless otherwise noted.) MAX886 E_K50 OUTPUT VOLTAGE vs. LOAD CURRENT 2.55 2.50 MAX8867/8-02 5.1 5.0 2.45 4.9 2.40 4.8 110 105 GROUND PIN CURRENT (µA) MAX8867/8-01 5.2 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 2.60 GROUND PIN CURRENT vs. LOAD CURRENT MAX8867/8-03 MAX886 E_K25 OUTPUT VOLTAGE vs. LOAD CURRENT MAX886 E_K50 100 95 MAX886 E_K25 90 85 80 75 70 65 50 100 50 100 150 LOAD CURRENT (mA) LOAD CURRENT (mA) MAX886 E_K25 GROUND PIN CURRENT vs. INPUT VOLTAGE MAX886 E_K50 GROUND PIN CURRENT vs. INPUT VOLTAGE 40 20 80 NO LOAD 60 40 1 2 3 4 INPUT VOLTAGE (V) 5 6 5 MAX886 E_K50 4 3 2 MAX886 E_K25 0 0 0 150 1 20 0 100 OUTPUT VOLTAGE vs. INPUT VOLTAGE OUTPUT VOLTAGE (V) NO LOAD 60 ILOAD = 50mA 100 GROUND PIN CURRENT (µA) 80 50 6 MAX8867/8-05 ILOAD = 50mA 100 0 LOAD CURRENT (mA) 120 MAX8867/8-04 120 GROUND PIN CURRENT (µA) 60 0 150 MAX8867/8-06 0 0 1 2 3 4 INPUT VOLTAGE (V) 5 6 0 1 2 3 4 5 6 INPUT VOLTAGE (V) _______________________________________________________________________________________ 3 MAX8867/MAX8868 ELECTRICAL CHARACTERISTICS (continued) ____________________________Typical Operating Characteristics (continued) (VIN = VOUT(NOMINAL) + 0.5V, CIN = 1µF, COUT = 1µF, CBP = 0.01µF, TA = +25°C, unless otherwise noted.) MAX886 E_K50 OUTPUT VOLTAGE vs. TEMPERATURE 2.50 5.10 5.00 4.90 2.45 ILOAD = 50mA 180 GROUND PIN CURRENT (µA) ILOAD = 50mA OUTPUT VOLTAGE (V) 2.55 GROUND PIN CURRENT vs. TEMPERATURE 200 MAX8867/8-08 ILOAD = 50mA OUTPUT VOLTAGE (V) 5.20 MAX8867/8-07 2.60 MAX8867/8-09 MAX886 E_K25 OUTPUT VOLTAGE vs. TEMPERATURE 160 140 MAX886 E_K50 120 100 80 MAX886 E_K25 60 40 20 4.80 -20 0 20 40 60 80 -20 0 20 40 60 80 100 -40 0 20 40 60 80 TEMPERATURE (°C) TEMPERATURE (°C) MAX886 E_K25 DROPOUT VOLTAGE vs. LOAD CURRENT MAX886 E_K50 DROPOUT VOLTAGE vs. LOAD CURRENT POWER-SUPPLY REJECTION RATIO vs. FREQUENCY DROPOUT VOLTAGE (mV) TA = +85°C 150 TA = +25°C 100 TA = -40°C 150 60 COUT = 10µF TA = +25°C 50 PSRR (dB) 200 TA = +85°C 100 TA = -40°C COUT = 1µF 40 30 20 50 ILOAD = 50mA CBP = 0.1µF 10 0 0 40 60 80 100 120 140 0 160 20 LOAD CURRENT (mA) 60 80 100 120 140 OUTPUT NOISE (µVRMS) 1 COUT = 1µF COUT = 10µF ILOAD = 10mA f = 10Hz TO 100kHz 70 50 MAX886 E_K50 40 MAX886 E_K30 20 MAX886 E_K25 COUT = 10µF 0 10 FREQUENCY (kHz) 100 1000 10 100 60 50 MAX886 E_K50 40 MAX886 E_K30 30 20 MAX886 E_K25 0 0.001 0.01 BP CAPACITANCE (µF) 1000 COUT = 10µF CBP = 0.01µF f = 10Hz TO 100kHz 10 10 0.01 1 OUTPUT NOISE vs. LOAD CURRENT 60 30 0.1 FREQUENCY (kHz) 80 MAX8867/8-13 CBP = 0.01µF ILOAD = 10mA 1 0.01 OUTPUT NOISE vs. BP CAPACITANCE 10 0.1 0 160 LOAD CURRENT (mA) OUTPUT NOISE SPECTRAL DENSITY vs. FREQUENCY 0.1 40 OUTPUT NOISE (µVRMS) 20 MAX8867/8-14 0 100 70 MAX8867/8-11 MAX8867/8-10 200 50 4 -20 TEMPERATURE (°C) 250 DROPOUT VOLTAGE (mV) 0 -40 100 MAX8867/8-12 -40 0.1 1 10 LOAD CURRENT (mA) _______________________________________________________________________________________ 100 MAX8867/8-15 2.40 OUTPUT NOISE SPECTRAL DENSITY (µV/√Hz) MAX8867/MAX8868 Low-Noise, Low-Dropout, 150mA Linear Regulators in SOT23 Low-Noise, Low-Dropout, 150mA Linear Regulators in SOT23 LOAD-TRANSIENT RESPONSE NEAR DROPOUT LOAD-TRANSIENT RESPONSE 3.01V 3.01V 3.00V 3.00V VOUT 2.99V LINE-TRANSIENT RESPONSE MAX8867/8-20 MAX8867/8-19 MAX8867/8-18 4V VIN 3V VOUT 2.99V 3.001V VOUT 50mA 50mA 2.999V ILOAD ILOAD 0mA 0mA 10µs/div MAX886 E_K30, VIN = VOUT + 0.1V, CIN = 10µF, ILOAD = 0mA TO 50mA 10µs/div MAX886 E_K30, VIN = VOUT + 0.5V, CIN = 10µF, ILOAD = 0mA TO 50mA MAX8868 ENTERING SHUTDOWN MAX886 E_K50 SHUTDOWN EXIT DELAY MAX886 E_K25 SHUTDOWN EXIT DELAY MAX8867/8-25 2V 100µs/div MAX886 E_K30, ILOAD = 50mA MAX8867-23 MAX8867-21 VSHDN VSHDN 2V CBP = 0.01µF 0V 0V 0V 4V VOUT CBP = 0.1µF 1V CBP = 0.1µF VOUT 2V 0V 0V 500µs/div NO LOAD CBP = 0.01µF 0V 2V VOUT VSHDN 2V 5µs/div 5µs/div ILOAD = 50mA ILOAD = 50mA MAX886 E_K25 10Hz TO 100kHz OUTPUT NOISE REGION OF STABLE COUT ESR vs. LOAD CURRENT MAX8867/8-17 MAX8867/8-16 100 COUT ESR (Ω) 10 VOUT 50µV/div COUT = 1µF 1 COUT = 10µF STABLE REGION 0.1 0.01 1ms/div COUT = 10µF, CBP = 0.1µF, ILOAD = 10mA 0 20 40 60 80 100 120 140 LOAD CURRENT (mA) _______________________________________________________________________________________ 5 MAX8867/MAX8868 ____________________________Typical Operating Characteristics (continued) (VIN = VOUT(NOMINAL) + 0.5V, CIN = 1µF, COUT = 1µF, CBP = 0.01µF, TA = +25°C, unless otherwise noted.) MAX8867/MAX8868 Low-Noise, Low-Dropout, 150mA Linear Regulators in SOT23 ______________________________________________________________Pin Description PIN NAME 1 SHDN Active-Low Shutdown Input. A logic low reduces the supply current to 10nA. On the MAX8868, a logic low also causes the output voltage to discharge to GND. Connect to IN for normal operation. 2 GND Ground. This pin also functions as a heatsink. Solder to a large pad or the circuit-board ground plane to maximize power dissipation. 3 IN Regulator Input. Supply voltage can range from 2.5V to 6.5V. Bypass with a 1µF capacitor to GND (see Capacitor Selection and Regulator Stability section). 4 OUT 5 BP IN SHDN FUNCTION Regulator Output. Sources up to 150mA. Bypass with a 1µF (