MAX8885 19-1576 Rev 0 10/99 150mA, Low-Dropout Linear Regulator with Power-OK Output General Description Features The MAX8885 low-dropout (LDO) linear regulator operates Optimized for Low-Cost Tantalum Capacitors from a +2.5V to +6.5V input voltage range and delivers up Pin Compatible with MIC5206 to 150mA. It uses a P-channel MOSFET pass transistor to allow a low 85A supply currentwhich is independent of Undervoltage Power-OK Output the loadas well as LDO voltage. The MAX8885 is opti- Preset Output Voltages (1% accuracy) mized to operate with low-cost, high-ESR output capaci- tors such as small case-size tantalum capacitors. It is ideal Guaranteed 150mA Output Current for cost-sensitive portable equipment such as PCS and 85A No-Load Supply Current cellular phones. For a pin-compatible, functionally equiva- lent device for use with a low-ESR, ceramic output capaci- Low 110mV Dropout at 100mA Load (165mV at tor, refer to the MAX8875 data sheet. 150mA load) The MAX8885 features a power-OK output that indicates Thermal-Overload and Short-Circuit Protection when the output is out of regulation, and is available in preset output voltage versions of 5.0V, 3.3V, 3.0V, 2.7V, Reverse-Battery Protection and 2.5V. Other features include 1A (max) shutdown cur- 60dB PSRR at 100Hz rent, short-circuit protection, thermal shutdown protection, and reverse-battery protection. The MAX8885 is available 1A max Shutdown Current in a miniature 5-pin SOT23 package. Ordering Information Applications PCS Phones Modems PART TEMP. RANGE PIN-PACKAGE MAX8885EUK25 -40C to +85C 5 SOT23-5 Cellular Phones Hand-Held Instruments MAX8885EUK27 -40C to +85C 5 SOT23-5 Cordless Phones Palmtop Computers MAX8885EUK30 -40C to +85C 5 SOT23-5 PCMCIA Cards Electronic Planners MAX8885EUK33 -40C to +85C 5 SOT23-5 MAX8885EUK50 -40C to +85C 5 SOT23-5 Output Voltage Selector Guide Note: See Output Voltage Selector Guide for more information. PART V (V) TOP MARK OUT MAX8885EUK25 2.5 ADLE MAX8885EUK27 2.7 ADLF MAX8885EUK30 3.0 ADLG MAX8885EUK33 3.3 ADLH MAX8885EUK50 5.0 ADLJ Typical Operating Circuit Note: Other output voltages between 2.5V and 5.0V are avail- able in 100mV incrementscontact factory for information. Minimum order quantity is 25,000 units. OUTPUT Pin Configuration PRESET INPUT 2.5V TO 5.0V +2.5V TO +6.5V 150mA TOP VIEW IN OUT C C OUT IN 1 5 OUT IN 4.7 F 1 F MAX8885 MAX8885 100k 2 GND ON SHDN POK TO OFF C SHDN 3 4 POK GND SOT23-5 Maxim Integrated Products 1 For free samples & the latest literature: 150mA, Low-Dropout Linear Regulator with Power-OK Output ABSOLUTE MAXIMUM RATINGS IN, SHDN, POK to GND...............................................-7V to +7V Operating Temperature Range ...........................-40C to +85C Junction Temperature......................................................+150C SHDN to IN...............................................................-7V to +0.3V OUT to GND ................................................-0.3V to (V + 0.3V) ..................................................................................140C/W JA IN Storage Temperature Range .............................-65C to +150C Output Short-Circuit Duration ........................................Indefinite Lead Temperature (soldering, 10s) .................................+300C Continuous Power Dissipation (T = +70C) A 5-Pin SOT23 (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 + 1V, SHDN = I , T = -40C to +85C, unless otherwise noted. Typical values are at T = +25C.) (Note 1) IN OUT(NOMINAL) N A A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Input Voltage V 2.5 6.5 V IN T = +25C, I = 100A -1 1 A OUT T = -40C to +85C, I = 100A -2 2 A OUT Output Voltage Accuracy % T = -40C to +85C, A -3 2 I = 100A to 120mA OUT Maximum Output Current I 150 mA OUT Current Limit I 160 390 mA LIM I = 100A 85 180 OUT Ground Pin Current I A Q I = 150mA 100 OUT I = 100A 0.1 OUT I = 50mA 50 V - OUT IN Dropout Voltage (Note 2) mV V OUT I = 100mA 110 220 OUT I = 150mA 165 OUT Line Regulation V V = (V + 0.1V) to 6.5V, I = 1mA -0.15 0 0.15 %/V LNR IN OUT OUT Load Regulation V I = 100A to 120mA, C = 4.7F 0.01 %/mA LDR OUT OUT Output Voltage Noise C = 10F, f = 10Hz to 100kHz 170 V OUT RMS Output Voltage AC Power- PSRR f = 100Hz 60 dB Supply Rejection Ratio SHUTDOWN T = +25C 0.005 1 A Shutdown Supply Current I A SHDN = GND OFF T = +85C 0.02 A V 2.0 IH SHDN Input Threshold V = 2.5V to 5.5V V IN V 0.4 IL T = +25C 0 100 A I V = 5.5V or GND nA SHDN Input Bias Current SHDN SHDN T = +85C 0.05 A 2 MAX8885