EVALUATION KIT AVAILABLE Low-Noise 500mA LDO Regulators MAX8902A/MAX8902B in a 2mm x 2mm TDFN Package General Description Features The MAX8902A/MAX8902B low-noise linear regulators 1.7V to 5.5V Input Voltage Range deliver up to 500mA of output current with only 0.6V to 5.3V Output Voltage Range 16V of output noise in a 100kHz bandwidth. These RMS 16V Output Noise, 10Hz to 100kHz RMS regulators maintain their output voltage over a wide 80A Operating Supply Current input range, requiring only 100mV of input-to-output headroom at full load. 92dB PSRR at 5kHz These LDOs maintain a low 80A typical supply cur- Guaranteed 500mA Output Current rent, independent of the load current and dropout volt- 1.5% Output Accuracy Over Load, Line, and age. The regulator control circuitry includes a Temperature programmable soft-start circuit and short circuit, 100mV (max) Dropout at 500mA Load reverse current, and thermal-overload protection. Other < 1A Shutdown Supply Current features include an enable input and a power-OK out- put (MAX8902B only). 700mA Short-Circuit Protection The MAX8902A output voltage can be set to 1.5V, 1.8V, Thermal-Overload Protection 2.0V, 2.5V, 3.0V, 3.1V, 3.3V, 4.6V, or 4.7V using the Output-to-Input Reverse Current Protection SELA and SELB inputs. The MAX8902B output voltage 2mm x 2mm x 0.8mm TDFN Package can be set between 0.6V and 5.3V with an external resistor voltage-divider. Ordering Information Applications TOP PART FEATURES MARK Notebook Computers MP3 and Portable Media Players Pin-selectable output MAX8902AATA+ ABG voltage Wireless Headphones Pin-selectable output GPS Portable Navigation Devices MAX8902AATA/V+ BRP voltage Smartphones MAX8902BATA+ Adjustable output voltage ABH MAX8902BATA/V+ Adjustable output voltage ADL +Denotes a lead(Pb)-free/RoHS-compliant package. /V denotes an automotive qualified part. Note: All devices are in an 8-pin, 2mm x 2mm TDFN package with an exposed paddle and operate over the -40C to +125C automotive temperature range. Typical Operating Circuits INPUT INPUT OUTPUT OUTPUT ADJUSTABLE 4.7V TO 5.5V 1.7V TO 5.5V 4.6V 0.6V TO 5.3V IN OUT IN OUT 10F 10F MAX8902A 0.01F MAX8902B 0.01F 10F 10F R1 BYP BYP ON EN EN ON OFF FB LOGIC OFF OUTS SUPPLY R2 R3 100k SELA SELB GS POK TO C GND GND EP EP Pin Configurations appear at end of data sheet. 19-0990 Rev 6 1/15Low-Noise 500mA LDO Regulators MAX8902A/MAX8902B in a 2mm x 2mm TDFN Package Absolute Maximum Ratings BYP, EN, IN, OUT, SELA, SELB, POK to GND, GS to GND, FB, Operating Temperature Range .........................-40C to +125C Junction Temperature Range ............................-40C to +150C OUTS to GND.....................................................-0.3V to +6.0V Output Short-Circuit Duration.....................................Continuous Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C Continuous Power Dissipation (T = +70C) A Soldering Temperature (reflow) .......................................+260C TDFN (derate 11.9mW/C above +70C)...................953.5mW 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 = 5V, OUTS = OUT, circuit of Figure 2 (MAX8902A) and Figure 3 (MAX8902B), T = -40C to +125C, unless otherwise IN EN A noted.) (Note 1) PARAMETER CONDITIONS MIN TYP MAX UNITS IN Input Voltage Range 1.7 5.5 V Input Undervoltage Lockout V rising, 100mV typical hysteresis 1.5 1.6 1.7 V IN OUT Output Voltage Range V V + 0.1V 0.6 5.3 V IN OUT V = 1.7V to 5.5V for V 1.4V, IN OUT Output Voltage Accuracy V = (V + 0.3V) to 5.5V for V > 1.4V, -1.5 +1.5 % IN OUT OUT I = 0.1mA to 500mA OUT Load Regulation I = 0.1mA to 500mA 0.02 % OUT V = 1.7V to 5.5V for V 1.4V, IN OUT Line Regulation V = (V + 0.3V) to 5.5V for V > 1.4V, 0.04 % IN OUT OUT I = 200mA OUT V 3.6V, T +85C 50 100 IN A Dropout Voltage I = 500mA mV OUT V 3.6V, T +125C 120 IN A (Note 2) V = 1.7V 150 IN Current Limit V = 95% of regulation, V = V + 0.5V 600 700 800 mA OUT IN OUT Output Noise I = 100mA, f = 10Hz to 100kHz, C = 0.01F 16 V OUT BYP RMS f = 5kHz 92 Power-Supply Rejection Ratio I = 10mA dB OUT f = 10kHz 85 f = 100kHz 62 OUTS (MAX8902A only) OUTS Input Bias Current In regulation 0.5 7.0 A FB (MAX8902B only) FB Threshold Accuracy V = 1.7V to 5.5V, I = 0.1mA to 500mA 0.591 0.600 0.609 V IN OUT T = +25C -0.1 0.02 +0.1 A FB Input Bias Current V = 0.6V A FB T = -40C 0.03 A BYP BYP Capacitor Range Regulator remains stable 1 100 nF BYP Startup Current From BYP to GND during startup 50 A www.maximintegrated.com Maxim Integrated 2