MAX8877/MAX8878 19-1301 Rev 2 1/01 Low-Noise, Low-Dropout, 150mA Linear Regulators with 2982 Pinout General Description Features The MAX8877/MAX8878 low-noise, low-dropout linear Pin-Compatible with the Industry-Standard 2982 regulators operate from a 2.5V to 6.5V input and deliver Low Output Noise: 30V RMS up to 150mA. These devices are pin-compatible with the industry-standard 2982 and offer an improved Low 55mV Dropout at 50mA Output dropout voltage. Typical output noise is 30V , and RMS (165mV at 150mA output) typical dropout is only 165mV at 150mA. The output Low 85A No-Load Supply Current voltage is preset to voltages in the range of 1.5V to 5.0V, in 100mV increments. Low 100A Operating Supply Current Designed with an internal P-channel MOSFET pass (even in dropout) transistor, the MAX8877/MAX8878 maintain a low Thermal-Overload and Short-Circuit Protection 100A supply current, independent of the load current and dropout voltage. Other features include a 10nA Reverse Battery Protection logic-controlled shutdown mode, short-circuit and ther- Output Current Limit mal-shutdown protection, and reverse battery protec- tion. The MAX8878 also includes an auto-discharge Preset Output Voltages (1.4% Accuracy) function, which actively discharges the output voltage 10nA Logic-Controlled Shutdown to ground when the device is placed in shutdown. Both devices come in regular and thin 5-pin SOT23 pack- ages. Applications Ordering Information Cellular Telephones TEMP. PART** PIN-PACKAGE Cordless Telephones RANGE PCS Telephones MAX8877C/Dxy 0C to +70C Dice* MAX8877EUKxy-T -40C to +85C 5 SOT23-5 Regular PCMCIA Cards MAX8877EZKxy-T -40C to +85C 5 SOT23-5 Thin Modems MAX8878C/Dxy 0C to +70C Dice* Hand-Held Instruments MAX8878EUKxy-T -40C to +85C 5 SOT23-5 Regular Palmtop Computers MAX8878EZKxy-T -40C to +85C 5 SOT23-5 Thin Electronic Planners *Dice are tested at T = +25C only. A **xy is the output voltage code (see Expanded Ordering Information table at end of data sheet). Typical Operating Circuit Pin Configuration TOP VIEW INPUT OUTPUT 2.5V TO 6.5V PRESET IN OUT 1.5V TO 5.0V IN 1 5 OUT C 150mA C OUT IN 3.3 F 1 F MAX8877 MAX8877 MAX8878 GND 2 MAX8878 ON SHDN OFF BP SHDN 3 4 BP GND C BP 0.01 F 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 Maxims website at www.maxim-ic.com.Low-Noise, Low-Dropout, 150mA Linear Regulators with 2982 Pinout ABSOLUTE MAXIMUM RATINGS IN to GND....................................................................-7V to +7V SOT23-5 Thin (derate 9.1mW/C above +70C)..........727mW Output Short-Circuit Duration ............................................Infinite Operating Temperature Range ...........................-40C to +85C SHDN to GND..............................................................-7V to +7V Junction Temperature......................................................+150C (Regular)..................................................................140C/W SHDN to IN...............................................................-7V to +0.3V JB (Thin)........................................................................110C/W OUT, BP to GND..........................................-0.3V to (V + 0.3V) JB IN Storage Temperature.........................................-65C to +150C Continuous Power Dissipation (T = +70C) A Lead Temperature (soldering, 10s) .................................+300C SOT23-5 Regular (derate 7.1mW/C above +70C) ....571mW 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 (V = V + 0.5V or 2.5V (whichever is greater), T = -40C to +85C, unless otherwise noted. Typical values are at T = IN OUT(NOMINAL) A A +25C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Input Voltage V 2.5 6.5 V IN I = 0.1mA, T = +25C, V 2.5V -1.4 1.4 OUT A OUT I = 0.1m A to 120m A, T = - 40 C to + 85C , OU T A -3 2 V 2.5V OUT Output Voltage Accuracy % I = 0.1mA, T = +25C, V < 2.5V -3 3 OUT A OUT I = 0.1mA to 120mA, T = -40C to +85C, OUT A -3.5 3.5 V < 2.5V OUT Maximum Output Current 150 mA Current Limit I 160 390 mA LIM No load 85 180 Ground Pin Current I A Q I = 150mA 100 OUT I = 1mA 1.1 OUT Dropout Voltage (Note 2) mV I = 50mA 55 120 OUT I = 150mA 165 OUT V = 2.5V or (V + 0.1V) to 6.5V, IN OUT Line Regulation V -0.15 0 0.15 %/V LNR I = 1mA OUT Load Regulation V I = 0.1mA to 120mA, C = 1F 0.01 0.04 %/mA LDR OUT OUT C = 10F 30 f = 10Hz to 100kHz, OUT Output Voltage Noise e VRMS n C = 0.01F BP C = 100F 20 OUT SHUTDOWN V V = 2.5V to 5.5V 2.0 V IH IN SHDN Input Threshold V V = 2.5V to 5.5V 0.4 IL IN T = +25C 0.01 100 A SHDN Input Bias Current I V = V A SHDN SHDN IN T = +85C 0.5 A T = +25C 0.01 1 A Shutdown Supply Current I V = 0V A Q(SHDN) OUT T = +85C 0.2 A T = +25C 30 150 Shutdown Exit Delay C = 0.1F A BP s (Note 3) C = 1F, no load OUT T = -40C to +85C 300 A Resistance Shutdown Discharge MAX8878 only 300 2 MAX8877/MAX8878