MAX8878EUK30+

19-1301; Rev 2; 1/01 Low-Noise, Low-Dropout, 150mA Linear Regulators with '2982 Pinout ____________________________Features ♦ Pin-Compatible with the Industry-Standard '2982 ________________________Applications _________________Ordering Information ♦ Low Output Noise: 30µVRMS ♦ 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 Cellular Telephones TEMP. RANGE PART** Cordless Telephones PIN-PACKAGE PCS Telephones MAX8877C/Dxy PCMCIA Cards MAX8877EUKxy-T -40°C to +85°C 5 SOT23-5 Regular Modems MAX8877EZKxy-T -40°C to +85°C 5 SOT23-5 Thin 0°C to +70°C 0°C to +70°C MAX8878C/Dxy Hand-Held Instruments MAX8878EUKxy-T Palmtop Computers Dice* Dice* -40°C to +85°C 5 SOT23-5 Regular MAX8878EZKxy-T -40°C to +85°C 5 SOT23-5 Thin *Dice are tested at TA = +25°C only. **xy is the output voltage code (see Expanded Ordering Information table at end of data sheet). Electronic Planners ____________Typical Operating Circuit _____________________Pin Configuration TOP VIEW INPUT 2.5V TO 6.5V IN CIN 1µF OUT MAX8877 MAX8878 ON COUT 3.3µF OUTPUT PRESET 1.5V TO 5.0V 150mA IN 1 GND 2 5 OUT 4 BP MAX8877 MAX8878 SHDN OFF BP CBP 0.01µF GND SHDN 3 SOT23-5 REGULAR AND THIN ________________________________________________________________ Maxim Integrated Products 1 For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. MAX8877/MAX8878 __________________General Description The MAX8877/MAX8878 low-noise, low-dropout linear regulators operate from a 2.5V to 6.5V input and deliver up to 150mA. These devices are pin-compatible with the industry-standard '2982 and offer an improved dropout voltage. Typical output noise is 30µVRMS, and typical dropout is only 165mV at 150mA. The output voltage is preset to voltages in the range of 1.5V to 5.0V, in 100mV increments. Designed with an internal P-channel MOSFET pass transistor, the MAX8877/MAX8878 maintain a low 100µA supply current, independent of the load current and dropout voltage. Other features include a 10nA logic-controlled shutdown mode, short-circuit and thermal-shutdown protection, and reverse battery protection. The MAX8878 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. MAX8877/MAX8878 Low-Noise, Low-Dropout, 150mA Linear Regulators with '2982 Pinout 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 or 2.5V (whichever is greater), TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER Input Voltage SYMBOL CONDITIONS VIN IOUT = 0.1mA, TA = +25°C, VOUT ≥ 2.5V Output Voltage Accuracy TYP UNITS 6.5 V -1.4 1.4 -3 2 IOUT = 0.1mA, TA = +25°C, VOUT < 2.5V -3 3 -3.5 3.5 Maximum Output Current Ground Pin Current MAX 2.5 IOUT = 0.1mA to 120mA, TA = -40°C to +85°C, VOUT ≥ 2.5V IOUT = 0.1mA to 120mA, TA = -40°C to +85°C, VOUT < 2.5V Current Limit MIN 150 ILIM IQ 160 mA 390 No load 85 IOUT = 150mA 100 IOUT = 1mA 1.1 Dropout Voltage (Note 2) IOUT = 50mA 55 IOUT = 150mA 165 Line Regulation ∆VLNR VIN = 2.5V or (VOUT + 0.1V) to 6.5V, IOUT = 1mA Load Regulation ∆VLDR IOUT = 0.1mA to 120mA, COUT = 1µF Output Voltage Noise 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 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 I SHDN Shutdown Supply Current IQ(SHDN) V SHDN = VIN VOUT = 0V Shutdown Exit Delay (Note 3) CBP = 0.1µF COUT = 1µF, no load Resistance Shutdown Discharge MAX8878 only 2 2.0 V 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 _______________________________________________________________________________________ µA µA µs Ω Low-Noise, Low-Dropout, 150mA Linear Regulators with '2982 Pinout (VIN = VOUT(NOMINAL) + 0.5V or 2.5V (whichever is greater), 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 Thermal Shutdown Hysteresis TSHDN 155 °C ∆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. (Only applicable for VOUT = +2.5V to +5V.) Note 3: Time needed for VOUT to reach 95% of final value. __________________________________________Typical Operating Characteristics (VIN = VOUT(NOMINAL) + 0.5V or 2.5V (whichever is greater), CIN = 1µF, COUT = 1µF, CBP = 0.01µF, TA = +25°C, unless otherwise noted.) 2.50 2.45 MAX8877-02 110 105 GROUND PIN CURRENT (µA) MAX8877-01 2.55 GROUND PIN CURRENT vs. LOAD CURRENT 5.2 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 2.60 OUTPUT VOLTAGE vs. LOAD CURRENT (MAX887_EUK50) 5.1 5.0 4.9 MAX8877-03 OUTPUT VOLTAGE vs. LOAD CURRENT (MAX887_EUK25) MAX887_EUK50 100 95 MAX887_EUK25 90 85 80 75 70 65 4.8 0 50 100 150 50 100 150 LOAD CURRENT (mA) LOAD CURRENT (mA) GROUND PIN CURRENT vs. INPUT VOLTAGE (MAX887_EUK25) GROUND PIN CURRENT vs. INPUT VOLTAGE (MAX887_EUK50) GROUND PIN CURRENT (µA) 100 80 NO LOAD 60 40 ILOAD = 50mA 100 80 NO LOAD 60 40 20 20 0 1 2 3 4 INPUT VOLTAGE (V) 5 6 100 150 OUTPUT VOLTAGE vs. INPUT VOLTAGE 6 NO LOAD 5 MAX887_EUK50 4 3 2 MAX887_EUK25 1 0 0 50 LOAD CURRENT (mA) OUTPUT VOLTAGE (V) ILOAD = 50mA 0 MAX8877-05 120 MAX8877-04 120 GROUND PIN CURRENT (µA) 60 0 MAX8877-06 2.40 0 0 1 2 3 4 INPUT VOLTAGE (V) 5 6 0 1 2 3 4 5 6 INPUT VOLTAGE (V) _______________________________________________________________________________________ 3 MAX8877/MAX8878 ELECTRICAL CHARACTERISTICS (continued) Typical Operating Characteristics (continued) (VIN = VOUT(NOMINAL) + 0.5V or 2.5V (whichever is greater), CIN = 1µF, COUT = 1µF, CBP = 0.01µF, TA = +25°C, unless otherwise noted.) OUTPUT VOLTAGE (V) 2.55 2.50 2.45 200 MAX8877-08 ILOAD = 50mA 5.1 5.0 4.9 ILOAD = 50mA 180 GROUND PIN CURRENT (µA) ILOAD = 50mA OUTPUT VOLTAGE (V) 5.2 MAX8877-07 2.60 GROUND PIN CURRENT vs. TEMPERATURE OUTPUT VOLTAGE vs. TEMPERATURE (MAX887_EUK50) MAX8877-09 OUTPUT VOLTAGE vs. TEMPERATURE (MAX887_EUK25) 160 140 MAX887_EUK50 120 100 80 MAX887_EUK25 60 40 20 2.40 -20 0 20 40 60 80 100 -40 -20 0 20 40 60 80 100 -40 -20 0 20 40 60 80 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) DROPOUT VOLTAGE vs. LOAD CURRENT (MAX887_EUK25) DROPOUT VOLTAGE vs. LOAD CURRENT (MAX887_EUK50) POWER-SUPPLY REJECTION RATIO vs. FREQUENCY TA = +25°C 150 TA = -40°C 100 MAX8877-12 MAX8877-11 60 COUT = 10µF TA = +85°C 150 100 70 50 TA = +25°C PSRR (dB) DROPOUT VOLTAGE (mV) TA = +85°C 200 200 MAX8877-10 250 DROPOUT VOLTAGE (mV) 0 4.8 -40 100 TA = -40°C 40 30 COUT = 1µF 20 50 50 10 60 80 0 100 120 140 160 20 60 80 OUTPUT NOISE SPECTRAL DENSITY vs. FREQUENCY 1 COUT = 1µF 0.1 COUT = 10µF ILOAD = 10mA f = 10Hz to 100kHz 70 60 50 MAX887_EUK50 40 MAX887_EUK30 30 10 FREQUENCY (kHz) 100 1000 MAX887_EUK50 50 1000 40 MAX887_EUK30 30 20 MAX887_EUK25 COUT = 10µF CBP = 0.01µF f = 10Hz to 100kHz 0 0 1 100 60 10 10 0.01 10 20 MAX887_EUK25 COUT = 10µF 1 OUTPUT NOISE vs. LOAD CURRENT OUTPUT NOISE vs. BP CAPACITANCE OUTPUT NOISE (µVRMS) CBP = 0.01µF ILOAD = 10mA 0.1 FREQUENCY (kHz) 80 MAX8877-13 10 0 0.01 100 120 140 160 LOAD CURRENT (mA) LOAD CURRENT (mA) 4 40 MAX8877-15 40 MAX8877-14 20 OUTPUT NOISE (µVRMS) 0 ILOAD = 50mA CBP = 0.1µF 0 0 0 OUTPUT NOISE SPECTRAL DENSITY (µV/√Hz) MAX8877/MAX8878 Low-Noise, Low-Dropout, 150mA Linear Regulators with '2982 Pinout 0.001 0.01 BP CAPACITANCE (µF) 0.1 1 10 100 LOAD CURRENT (mA) _______________________________________________________________________________________ 1000 Low-Noise, Low-Dropout, 150mA Linear Regulators with '2982 Pinout REGION OF STABLE COUT ESR vs. LOAD CURRENT OUTPUT NOISE 10Hz TO 100kHz MAX8877-17 MAX8877-16 100 COUT ESR (Ω) 10 VOUT 50µV/div COUT = 10µF 1 COUT = 1µF STABLE REGION 0.1 0.01 0 1ms/div 100 MAX887_EUK25, COUT = 10µF, ILOAD = 10mA, CBP = 0.1µF LINE-TRANSIENT RESPONSE 4V MAX8877-20 MAX8877-19 VIN 3V LOAD-TRANSIENT RESPONSE NEAR DROPOUT LOAD-TRANSIENT RESPONSE MAX8877-18 150 LOAD CURRENT (mA) 3.01V VOUT 3.00V 2.99V 3.01V VOUT 3.00V 2.99V 3.001V VOUT 3.000V 50mA 50mA 2.999V ILOAD MAX887_EUK25 SHUTDOWN EXIT DELAY MAX887_EUK50 SHUTDOWN EXIT DELAY MAX8877-21 1V ENTERING SHUTDOWN MAX8877-22 VSHDN CBP = 0.01µF 4V MAX8877-23 VSHDN 2V 0V VOUT 2V MAX887_EUK30, VIN = VOUT + 0.1V, CIN = 10µF, ILOAD = 0mA TO 50mA MAX887_EUK30, VIN = VOUT + 0.5V, CIN = 10µF, ILOAD = 0mA TO 50mA MAX887_EUK30, ILOAD = 50mA 0V 10µs/div 10µs/div 100µs/div 2V ILOAD CBP = 0.01µF CBP = 0.1µF V SHDN 2V 0V 5V VOUT VOUT CBP = 0.1µF 2V 0V 0V 0V 5µs/div MAX887_EUK25, ILOAD = 50mA 5µs/div MAX887_EUK50, ILOAD = 50mA 500µs/div MAX8878, NO LOAD _______________________________________________________________________________________ 5 MAX8877/MAX8878 Typical Operating Characteristics (continued) (VIN = VOUT(NOMINAL) + 0.5V or 2.5V (whichever is greater), CIN = 1µF, COUT = 1µF, CBP = 0.01µF, TA = +25°C, unless otherwise noted.) MAX8877/MAX8878 Low-Noise, Low-Dropout, 150mA Linear Regulators with '2982 Pinout ______________________________________________________________Pin Description PIN NAME 1 IN 2 GND 3 SHDN 4 BP 5 OUT FUNCTION 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). Ground. This pin also functions as a heatsink. Solder to a large pad or the circuit-board ground plane to maximize power dissipation. Active-Low Shutdown Input. A logic low reduces the supply current to 10nA. On the MAX8878, a logic low also causes the output voltage to discharge to GND. Connect to IN for normal operation. Reference-Noise Bypass. Bypass with a low-leakage, 0.01µF ceramic capacitor for reduced noise at the output. Regulator Output. Sources up to 150mA. Bypass with a 1µF (