MAX25300AATA/V+

Click here to ask about the production status of specific part numbers. MAX25300A/MAX25300B 12µVRMS Low Noise 500mA LDO Linear Regulator General Description Benefits and Features The MAX25300A/B are low-noise linear regulators that deliver up to 500mA of output current with only 12µVRMS of output noise from 10Hz to 100kHz. These regulators maintain ±1% output accuracy over a wide input voltage range, requiring only 100mV of input-to-output headroom at full load. The 365µA no-load supply current is independent of dropout voltage. ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● The MAX25300A has nine pin-selectable output voltages: 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.1V, 3.3V, 4.0V, and 5V. The MAX25300B has a resistor adjustable output voltage in the range of 0.6V to 5.3V. The MAX25300B also includes an active-high POK output. The MAX25300A/B are offered in an 8-pin TDFN package. Applications ● Automotive Electronics ● Audio Systems ● High-Resolution Data Acquisition Systems 19-100781; Rev 0; 6/20 1.7V to 5.5V Input Voltage Range 0.6V to 5.3V Output Voltage Range 12µVRMS Output Noise, 10Hz to 100kHz 365µA Operating Supply Current 70dB PSRR at 10kHz 500mA Maximum Output Current ±1% DC Accuracy Over Load, Line, and Temperature 100mV (Max) Dropout at 500mA Load (3.6VIN) < 0.1µA Shutdown Supply Current Stable with 2µF(Min) Output Capacitance Programmable Soft-Start Rate Overcurrent and Overtemperature Protection Output-to-Input Reversed Current Protection POK Output 2mm x 2mm 8-pin TDFN Package AEC-Q100 -40°C to 125°C Operating Temperature Ordering Information appears at end of datasheet. MAX25300A/MAX25300B 12µVRMS Low Noise 500mA LDO Linear Regulator Typical Operating Circuits IN IN (1.7V to 5.5V) OUT CIN 4.7µF OUT (1.5V/500mA) CBYP 10nF GND COUT 4.7µF BYP MAX25300A ENABLE VOUT SELECT: TO GND, IN OR FLOAT EN TDFN OUTS SELA Hi-Z SELB EP OUTPUT ADJUSTABLE (0.6V TO 5.3V) OUT IN IN (1.7V to 5.5V) CIN 4.7µF CBYP 10nF GND R1 100k BYP COUT 4.7µF MAX25300B ENABLE EN TDFN RESET POK R3 GS EP FB R2 www.maximintegrated.com 19-100781 Maxim Integrated | 2 MAX25300A/MAX25300B 12µVRMS Low Noise 500mA LDO Linear Regulator TABLE OF CONTENTS General Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Benefits and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Typical Operating Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Absolute Maximum Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 TDFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Typical Operating Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Pin Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 MAX25300A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 MAX25300B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Functional Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Simplified Functional Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Detailed Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Enable (EN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Bypass (BYP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Protection Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Output Voltage Configuration (MAX25300A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Output Voltage Configuration (MAX25300B) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Power-OK (MAX25300B) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Input Capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Output Capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Thermal Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Typical Application Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Typical Application Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 www.maximintegrated.com 19-100781 Maxim Integrated | 3 MAX25300A/MAX25300B 12µVRMS Low Noise 500mA LDO Linear Regulator LIST OF TABLES Table 1. MAX25300A Output Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 www.maximintegrated.com 19-100781 Maxim Integrated | 4 MAX25300A/MAX25300B 12µVRMS Low Noise 500mA LDO Linear Regulator Absolute Maximum Ratings IN, EN, POK, SELA, SELB, GS, OUTS, FB, BYP to GND ...-0.3V to +6V OUT to GND .....................................................-0.3V to IN + 0.3V Output Short-Circuit Duration ..................................... Continuous Continuous Power Dissipation (TA = +70°C) . TDFN (derate 9.8mW/°C above 70°C) ......................... 784mW Operating Temperature Range ...........................-40°C to +125°C Maximum Junction Temperature ...................................... +150°C Storage Temperature Range ..............................-65°C to +150°C Lead Temperature (Soldering, 10 seconds) .....................+300°C Soldering Temperature (reflow) ........................................ +260°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. Package Information TDFN Package Code T822+3C Outline Number 21-0168 Land Pattern Number 90-0065 Thermal Resistance, Single-Layer Board: Junction to Ambient (θJA) 130°C/W Junction to Case (θJC) 8°C/W Thermal Resistance, Four-Layer Board: Junction to Ambient (θJA) 102°C/W Junction to Case (θJC) 8°C/W For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Electrical Characteristics (VIN = 3.6V, TJ = -40°C to +125°C, CBYP = 10nF, CIN = 4.7µF, COUT = 4.7µF, typical values are at TJ = +25°C, unless otherwise specified. (Note 1)) PARAMETER Input Voltage Range Input Undervoltage Lockout SYMBOL VIN VIN_UVLO CONDITIONS Guaranteed by Output Accuracy 1.7 VIN rising, 100mV hysteresis 1.5 0.6 Output Voltage Range VOUT VIN > VOUT + 0.1V Output Capacitance COUT For stability and proper operation IQ Supply Current MIN 2 IOUT = 0mA UNITS 5.5 V 1.7 V 5.3 V 4.7 µF 600 TJ = +25°C 0.01 0.1 TJ = +125°C 2400 VEN = 0V Output Accuracy (MAX25300A Only) ACC25300A IOUT from 0.1mA to 500mA, VIN from VOUT + 0.3V to 5.5V, VIN > 1.7V -1 Output Accuracy (MAX25300B Only) ACC25300B IOUT from 0.1mA to 500mA, VIN from VOUT + 0.3V to 5.5V, VIN > 1.7V 0.594 www.maximintegrated.com 1.6 MAX 365 ISHUTDOWN Load Regulation TYP IOUT from 0.1mA to 500mA, VIN = VOUT + 300mV , VOUT = 2.5V 19-100781 0.6 0.07 µA nA +1 % 0.606 V %/V Maxim Integrated | 5 MAX25300A/MAX25300B 12µVRMS Low Noise 500mA LDO Linear Regulator Electrical Characteristics (continued) (VIN = 3.6V, TJ = -40°C to +125°C, CBYP = 10nF, CIN = 4.7µF, COUT = 4.7µF, typical values are at TJ = +25°C, unless otherwise specified. (Note 1)) PARAMETER SYMBOL CONDITIONS Load Transient IOUT = 50mA to 500mA to 50mA, tRISE = tFALL = 1µs Line Regulation Line Transient 0.06 %/V VIN = 4V to 5V to 4V, IOUT = 500mA, tRISE = tFALL = 5µs 3 mV Current Limit Output Noise IOUT = 100mA, 10Hz to 100kHz VIN = 3.6V 26 100 VIN = 2.5V 36 200 VIN = 1.7V CBYP IOUT = 100mA 63 300 VIN = 1.7V 600 700 800 VIN = 3.6V 600 700 800 CBYP = 47nF 12 f = 1kHz 70 f = 10kHz 70 f = 100kHz 60 f = 1MHz 40 Regulator remains stable 0.001 From BYP to GND during startup EN Input Threshold VIN from 1.7V to 5.5V EN rising EN falling 0.4 0.7 EN Input Leakage Current VEN from 1.7V to 5.5V TJ = +25°C -1 +0.001 POK Threshold (MAX25300B Only) VOUT when POK switches VOUT rising POK Voltage, Low (MAX25300B Only) IPOK = 1mA POK Leakage Current (MAX25300B Only) VPOK = 5.5V TJ = +125°C VOUT falling TJ = +25°C +1 94 -0.1 10 100 +0.001 +0.1 0.01 When shorted to GND or IN. When Hi-Z 1.2 88 TJ = +125°C 500 1 SELA/B Input Capacitance (MAX25300A Only) When Hi-Z Input Reverse Current Threshold VOUT = 3.6V, when VIN falls to 0V Thermal Shutdown Threshold TJ when output turns on/off www.maximintegrated.com 91 V µA % mV µA Ω MΩ 10 200 TJ rising 165 TJ falling 150 19-100781 µF µA 0.01 88 mA dB 50 0.8 mV µVRMS 0.1 BYP Soft-Start Current SELA/B Input Resistance (MAX25300A Only) UNITS VIN from VOUT + 0.3V to 5.5V, VIN > 1.7V, IOUT = 200mA VOUTS/FB = 0V, VIN - VOUT = 500mV BYP Capacitor Range MAX mV IOUT = 500mA PSRR TYP 50 Dropout Voltage (Note 2) Power Supply Rejection Ratio MIN pF mA °C Maxim Integrated | 6 MAX25300A/MAX25300B 12µVRMS Low Noise 500mA LDO Linear Regulator Note 1: Limits over the specified operating temperature and supply voltage range are guaranteed by design and characterization, and production tested at TJ = 25ºC only. Note 2: Dropout voltage is defined as (VIN - VOUT), when VOUT is 5% lower than the value of VOUT when VIN = VOUT + 0.5V. www.maximintegrated.com 19-100781 Maxim Integrated | 7 MAX25300A/MAX25300B 12µVRMS Low Noise 500mA LDO Linear Regulator Typical Operating Characteristics (MAX25300B, VIN = 5.0V, VOUT = 3.3V, TA = 25°C, CIN = 4.7µF , COUT = 4.7µF, unless otherwise noted.) 4.2V INPUT www.maximintegrated.com 19-100781 Maxim Integrated | 8 MAX25300A/MAX25300B 12µVRMS Low Noise 500mA LDO Linear Regulator Pin Configurations MAX25300A Top View (Pad-Side Down) IN 1 8 OUT GND 2 7 BYP Exposed Pad EN 3 6 OUTS SELA 4 5 SELB 8-pin TDFN 3mm x 3mm www.maximintegrated.com 19-100781 Maxim Integrated | 9 MAX25300A/MAX25300B 12µVRMS Low Noise 500mA LDO Linear Regulator MAX25300B Top View (Pad-Side Down) IN 1 8 OUT GND 2 7 BYP Exposed Pad EN 3 6 FB GS 4 5 POK 8-pin TDFN 3mm x 3mm Pin Description PIN NAME FUNCTION 1 IN Regulator Supply Input. Connect to a voltage between 1.7V and 5.5V and bypass with a 4.7µF capacitor from IN to GND. 2 2 GND 3 3 EN Enable Input. Connect this pin to a logic signal to enable (VEN high) or disable (VEN low) the regulator output. Connect to IN to keep the output enabled whenever a valid supply voltage is present. 4 — SELA Output Select Input. Connect to GND, IN or leave unconnected to select one of three states. The state of the SELA and SELB pins are read when the device is enabled and used to select one of nine output voltages. — 4 GS 5 — SELB Output Select Input. Connect to GND, IN or leave unconnected to select one of three states. The state of the SELA and SELB pins are read when the device is enabled and used to select one of nine output voltages. — 5 POK Power On Reset Output. Connect a pullup resistor from this pin to a supply to create a reset signal that goes high after the regulator output has reached its regulation voltage. 6 — OUTS MAX25300A MAX25300B 1 www.maximintegrated.com Regulator Ground. Bring IN and OUT bypass capacitor GND connections to this pin for best performance. Ground Sense. Connect GS to GND. Output Voltage Sense Input. Connect to the load at a point where accurate regulation is required to eliminate resistive metal drops. 19-100781 Maxim Integrated | 10 MAX25300A/MAX25300B 12µVRMS Low Noise 500mA LDO Linear Regulator Pin Description (continued) PIN NAME FUNCTION MAX25300A MAX25300B — 6 FB 7 7 BYP Bypass Capacitor Input. Connect a 0.001µF to 0.1µF capacitor between OUT and BYP to reduce output noise and set the regulator soft-start rate. 8 8 OUT Regulator Output. Sources up to 500mA at the output regulation voltage. Bypass with a 4.7µF (2µF minimum including voltage derating) low ESR (