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MAX8840ELT27+G65

MAX8840ELT27+G65

  • 厂商:

    AD(亚德诺)

  • 封装:

    WFDFN6

  • 描述:

    INTEGRATED CIRCUIT

  • 数据手册
  • 价格&库存
MAX8840ELT27+G65 数据手册
MAX8840/MAX8841/ MAX8842 Ultra-Low-Noise, High PSRR, Low-Dropout, 150mA Linear Regulators in µDFN General Description The MAX8840/MAX8841/MAX8842 ultra-low-noise, lowdropout (LDO) linear regulators are designed to deliver up to 150mA continuous output current. These regulators achieve a low 120mV dropout for 120mA load current. The MAX8840 uses an advanced architecture to achieve ultra-low output voltage noise of 11µVRMS and PSRR of 54dB at 100kHz. The MAX8841 does not require a bypass capacitor, hence achieving the smallest PC board area. The MAX8842 output voltage can be adjusted with an external divider. The MAX8840/MAX8841 are preset to a variety of voltages in the 1.5V to 4.5V range. Designed with a p-channel MOSFET series pass transistor, the MAX8840/MAX8841/ MAX8842 maintain very low ground current (40µA). The regulators are designed and optimized to work with low-value, low-cost ceramic capacitors. The MAX8840 requires only 1µF (typ) of output capacitance for stability with any load. When disabled, current consumption drops to below 1µA. The MAX8840/MAX8841/MAX8842 are available in a tiny 1.0mm x 1.5mm x 0.8mm µDFN. Applications Cellular and Cordless Phones PDA and Palmtop Computers Base Stations Bluetooth Portable Radios and Accessories Wireless LANs Digital Cameras Personal Stereos Portable and Battery-Powered Equipment Features o Space-Saving 1.0mm x 1.5mm x 0.8mm µDFN o 11µVRMS Output Noise at 100Hz to 100kHz Bandwidth (MAX8840) o 78dB PSRR at 1kHz (MAX8840) o 120mV Dropout at 120mA Load o Stable with 1µF Ceramic Capacitor for Any Load o Guaranteed 150mA Output o Only Need Input and Output Capacitors (MAX8841) o Output Voltages: 1.5V, 1.8V, 2.5V, 2.6V, 2.7V, 2.8V, 2.85V, 3V, 3.3V, 4.5V (MAX8840/MAX8841) and Adjustable (MAX8842) o Low 40µA Ground Current o Excellent Load/Line Transient o Overcurrent and Thermal Protection Ordering Information PART* TEMP RANGE PIN-PACKAGE MAX8840ELTxy+T -40°C to +85°C 6 µDFN-6 1.5mm x 1.0mm MAX8841ELTxy+T -40°C to +85°C 6 µDFN-6 1.5mm x 1.0mm MAX8842ELT+T -40°C to +85°C 6 µDFN-6 1.5mm x 1.0mm *xy is the output voltage code (see the Output Voltage Selector Guide). Other versions between 1.5V and 4.5V are available in 100mV increments. Contact factory for other versions. +Denotes lead-free package. Output Voltage Selector Guide appears at end of data sheet. Typical Operating Circuits Pin Configuration TOP VIEW INPUT 2V TO 6V CIN 1µF ON OFF IN OUT OUTPUT PRESET 1.5V TO 4.5V MAX8840 GND 2 BP SHDN GND COUT 1µF Typical Operating Circuits continued at end of data sheet. 6 OUT IN 1 CBP 10nF MAX8840 MAX8841 MAX8842 SHDN 3 5 N.C. BP (MAX8840) 4 N.C. (MAX8841) FB (MAX8842) µDFN (1.5mm x 1.0mm) For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com. 19-0629; Rev 1; 1/07 MAX8840/MAX8841/MAX8842 Ultra-Low-Noise, High PSRR, Low-Dropout, 150mA Linear Regulators in µDFN ABSOLUTE MAXIMUM RATINGS θJA ..................................................................................477°C/W Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C IN to GND .................................................................-0.3V to +7V Output Short-Circuit Duration ............................................Infinite OUT, SHDN to GND ......................................-0.3V to (IN + 0.3V) FB, BP, N.C. to GND..................................-0.3V to (OUT + 0.3V) Continuous Power Dissipation (TA = +70°C) 6-Pin µDFN (derate 2.1mW/°C above +70°C) .............0.168W 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 + 0.5V, TA = -40°C to +85°C, unless otherwise noted. CIN = 1µF, COUT = 1µF, CBP = 10nF. Typical values are at +25°C; the MAX8842 is tested with 2.45V output, unless otherwise noted.) (Note 1) PARAMETER Input Voltage Range SYMBOL CONDITIONS VIN Output Voltage Accuracy IOUT Current Limit ILIM Dropout Voltage (Note 2) TYP MAX UNITS V 2 6 IOUT = 1mA, TA = +25°C -1 +1 IOUT = 100µA to 80mA, TA = +25°C -2 +2 -3 +3 IOUT = 100µA to 80mA Maximum Output Current MIN 150 OUT = 90% of nominal value 150 % mA 200 300 VOUT ≥ 3V, IOUT = 80mA 80 170 VOUT ≥ 3V, IOUT = 120mA 120 2.5V ≤ VOUT < 3V, IOUT = 80mA 90 2.5V ≤ VOUT < 3V, IOUT = 120mA 135 2V ≤ VOUT < 2.5V, IOUT = 80mA 120 2V ≤ VOUT < 2.5V, IOUT = 120mA 180 200 mA mV 250 IOUT = 0.05mA 40 90 VIN = VOUT(nom) - 0.1V, IOUT = 0mA 220 500 Ground Current IQ Line Regulation VLNR VIN = (VOUT + 0.5V) to 6V, IOUT = 0.1mA 0.001 %/V Load Regulation VLDR IOUT = 1mA to 80mA 0.003 %/mA Shutdown Supply Current ISHDN SHDN = 0V f = 1kHz, IOUT = 10mA Ripple Rejection PSRR f = 10kHz, IOUT = 10mA f = 100kHz, IOUT = 10mA 2 TA = +25°C 0.003 TA = +85°C 0.05 MAX8840 78 MAX8841/MAX8842 72 MAX8840 75 MAX8841/MAX8842 65 MAX8840 54 MAX8841/ MAX8842 46 1 µA µA dB Maxim Integrated MAX8840/MAX8841/MAX8842 Ultra-Low-Noise, High PSRR, Low-Dropout, 150mA Linear Regulators in µDFN ELECTRICAL CHARACTERISTICS (continued) (VIN = VOUT + 0.5V, TA = -40°C to +85°C, unless otherwise noted. CIN = 1µF, COUT = 1µF, CBP = 10nF. Typical values are at +25°C; the MAX8842 is tested with 2.45V output, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS Output Noise Voltage (RMS) MIN TYP f = 100Hz to 100kHz, ILOAD = 10mA MAX8840 11 MAX8841/MAX8842 230 f = 100Hz to 100kHz, ILOAD = 80mA MAX8840 13 MAX8841/MAX8842 230 MAX UNITS µV Shutdown Exit Delay RLOAD = 50Ω (Note 3) 300 µs SHDN Logic-Low Level VIN = 2V to 6V 0.4 V SHDN Logic-High Level VIN = 2V to 6V SHDN Input Bias Current VIN = 6V, SHDN = 0V or 6V FB Input Bias Current (MAX8842) VIN = 6V, VFB = 1.3V 1.5 V TA = +25°C TA = +85°C 0.01 TA = +25°C 0.006 TA = +85°C 0.01 µA 0.1 µA Thermal Shutdown 160 °C Thermal-Shutdown Hysteresis 10 °C Note 1: Limits are 100% tested at +25°C. Limits over operating temperature range are guaranteed by design. Note 2: Dropout is defined as VIN - VOUT when VOUT is 100mV below the value of VOUT for VIN = VOUT + 0.5V. Note 3: Time needed for VOUT to reach 90% of final value. Typical Operating Characteristics (VIN = VOUT + 0.5V, CIN = 1µF, COUT = 1µF, CBP = 10nF, TA = +25°C, unless otherwise noted.) MAX8840 OUTPUT VOLTAGE ACCURACY vs. LOAD CURRENT % DEVIATION (%) 0.4 2.0 1.5 IOUT = 150mA 1.0 0.2 0 -0.2 0.5 -0.4 0.0 -0.6 0.8 IOUT = 1mA 0.6 % DEVIATION (%) IOUT = 0mA 2.5 1.0 MAX8840 toc02 3.0 OUTPUT VOLTAGE (V) 0.6 MAX8840 toc01 3.5 MAX8840 OUTPUT VOLTAGE ACCURACY vs. TEMPERATURE MAX8840 toc03 MAX8840 OUTPUT VOLTAGE vs. INPUT VOLTAGE 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 0 1 2 3 4 INPUT VOLTAGE (V) Maxim Integrated 5 6 -1.0 0 25 50 75 100 LOAD CURRENT (mA) 125 150 -40 -15 10 35 60 85 TEMPERATURE (°C) 3 MAX8840/MAX8841/MAX8842 Ultra-Low-Noise, High PSRR, Low-Dropout, 150mA Linear Regulators in µDFN Typical Operating Characteristics (continued) (VIN = VOUT + 0.5V, CIN = 1µF, COUT = 1µF, CBP = 10nF, TA = +25°C, unless otherwise noted.) TA = +85°C 120 100 TA = -40°C 80 60 200 150 100 MAX8840 GROUND PIN CURRENT vs. INPUT VOLTAGE 350 300 GROUND PIN CURRENT (μA) 140 MAX8840 toc05 TA = +25°C IOUT = 80mA DROPOUT VOLTAGE (mV) 0 0 0 25 50 75 100 125 2.2 2.4 2.6 2.8 3.0 3.2 0 1 2 3 OUTPUT (V) INPUT VOLTAGE (V) MAX8840 GROUND PIN CURRENT vs. LOAD CURRENT MAX8840 GROUND PIN CURRENT vs. TEMPERATURE MAX8840 POWER-SUPPLY REJECTION RATIO vs. FREQUENCY 200 VIN = 3.8V 150 100 MAX8840 toc08 90 80 70 45 60 PSRR (dB) 250 GROUND PIN CURRENT (μA) MAX8840 toc 07 VIN = 5.5V 50 40 50 40 30 35 20 50 ILOAD = 10mA CBP = 10nF 10 0 30 25 50 75 100 125 150 0 -40 -15 10 35 60 85 0.01 0.1 1 10 100 1000 LOAD CURRENT (mA) TEMPERATURE (°C) FREQUENCY (kHz) MAX8841 POWER-SUPPLY REJECTION RATIO vs. FREQUENCY MAX8840 OUTPUT NOISE MAX8840 OUTPUT NOISE-SPECTRAL DENSITY vs. FREQUENCY MAX8840 toc11 80 MAX8840 toc12 10,000 MAX8840 toc10 90 VIN = 3.8V ILOAD = 10mA VNOISE = 11μVRMS 70 60 50 20μV/div 40 30 20 OUTPUT NOISE DENSITY (nV/√Hz) 0 5 4 INPUT VOLTAGE (V) 300 GROUND PIN CURRENT (μA) ILOAD = 0mA 100 0 2.0 150 350 PSRR (dB) 150 50 20 1000 100 ILOAD = 10mA 0 0.01 0.1 1 10 FREQUENCY (kHz) 4 200 50 40 10 ILOAD = 150mA 250 MAX8840 toc09 DROPOUT VOLTAGE (mV) 180 160 250 MAX8840 toc04 200 MAX8840 DROPOUT VOLTAGE vs. OUTPUT VOLTAGE MAX8840 toc06 MAX8440 DROPOUT VOLTAGE vs. LOAD CURRENT 100 1000 400μs/div 10 0.01 0.1 1 10 100 1000 FREQUENCY (kHz) Maxim Integrated MAX8840/MAX8841/MAX8842 Ultra-Low-Noise, High PSRR, Low-Dropout, 150mA Linear Regulators in µDFN Typical Operating Characteristics (continued) (VIN = VOUT + 0.5V, CIN = 1µF, COUT = 1µF, CBP = 10nF, TA = +25°C, unless otherwise noted.) MAX8840 toc15 MAX8840 toc14 MAX8840 toc13 25 20 OUTPUT NOISE (μV) MAX8840 LOAD-TRANSIENT RESPONSE NEAR DROPOUT MAX8840 LOAD-TRANSIENT RESPONSE MAX8840 OUTPUT NOISE vs. BP CAPACITANCE VIN = 3.1V ILOAD = 0 TO 50mA VIN = 3.5V ILOAD = 0 TO 50mA 15 10 VOUT 10mV/div VOUT 10mV/div 5 0 10 1 1ms/div 1ms/div 100 BP CAPACITANCE (nF) MAX8840 EXITING SHUTDOWN WAVEFORM MAX8840 LINE-TRANSIENT RESPONSE MAX8840 ENTERING SHUTDOWN DELAY MAX8840 toc17 MAX8840 toc16 VOUT = 2.85V RLOAD = 47Ω VIN = 3.5V TO 4V MAX8840 toc18 CBP = 0.01μF SHUTDOWN VOLTAGE SHUTDOWN VOLTAGE OUTPUT VOLTAGE 2V/div VOUT 2mV/div OUTPUT VOLTAGE 2V/div 20μs/div 200μs/div 40μs/div MAX8840 REGION OF STABLE COUT ESR vs. LOAD CURRENT MAX8840 SHUTDOWN EXIT DELAY MAX8840 toc19 100 VOUT 1V/div 10 COUT ESR (Ω) SHUTDOWN VOLTAGE MAX8840 toc20 VOUT = 3V CBP = 100nF 1 0.1 0.01 20μs/div 0 25 50 75 100 125 150 LOAD CURRENT (mA) Maxim Integrated 5 MAX8840/MAX8841/MAX8842 Ultra-Low-Noise, High PSRR, Low-Dropout, 150mA Linear Regulators in µDFN Pin Description PIN MAX8842 NAME FUNCTION MAX8840 MAX8841 1 1 1 IN 2 2 2 GND Ground 3 3 3 SHDN Shutdown. Pull low to disable the regulator. 4 — — BP Noise Bypass for Low-Noise Operation. Connect a 10nF capacitor from BP to OUT. It is shorted to OUT in shutdown mode. — — 4 FB Adjustable Output Feedback Point 5 4, 5 5 N.C. No Connection. Not internally connected. 6 6 6 OUT Regulated Output Voltage. Bypass with a capacitor to GND. See the Capacitor Selection and Regulator Stability section. Unregulated Input Supply Detailed Description The MAX8840/MAX8841/MAX8842 are ultra-low-noise, low-dropout, low-quiescent current linear regulators designed for space-restricted applications. The parts are available with preset output voltages ranging from 1.5V to 4.5V. These devices can supply loads up to 150mA. As shown in the Functional Diagram , the MAX8840/MAX8841 consist of an innovative bandgap core and noise bypass circuit, error amplifier, p-channel pass transistor, and internal feedback voltagedivider. The MAX8842 allows for adjustable output with an external feedback network. The 1.225V bandgap reference is connected to the error amplifier’s inverting input. The error amplifier compares this reference with the feedback voltage and amplifies the difference. If the feedback voltage is lower than the reference voltage, the pass-transistor gate is pulled low. This allows more current to pass to the output and increases the output voltage. If the feedback voltage is too high, the pass transistor gate is pulled high, allowing less current to pass to the output. The output voltage is fed back through an internal resistor voltage-divider connected to the OUT pin. An external bypass capacitor connected to BP (MAX8840) reduces noise at the output. Additional blocks include a current limiter, thermal sensor, and shutdown logic. reduces quiescent current. pnp-based regulators waste considerable current in dropout when the pass transistor saturates. They also use high base-drive current under heavy loads. The MAX8840/MAX8841/MAX8842 do not suffer from these problems and consume only 40µA of quiescent current in light load and 220µA in dropout (see the Typical Operating Characteristics). Output Voltage Selection The MAX8840/MAX8841 are supplied with factory-set output voltages from 1.5V to 4.5V, in 100mV increments (see the Ordering Information). The MAX8842 features a user-adjustable output through an external feedback network (see the Typical Operating Circuits). To set the output of the MAX8842, use the following equation: ⎛ VOUT ⎞ R1 = R2 X ⎜ - 1⎟ ⎝ VREF ⎠ where R2 is chosen to be less than 240kΩ and VREF = 1.225V. Use 1% or better resistors. Shutdown Internal p-Channel Pass Transistor The MAX8840/MAX8841/MAX8842 feature a low-power shutdown mode that reduces quiescent current less than 1µA. Driving SHDN low disables the voltage reference, error amplifier, gate-drive circuitry, and pass transistor (see the Functional Diagram), and the device output enters a high-impedance state. Connect SHDN to IN for normal operation. The MAX8840/MAX8841/MAX8842 feature a 1Ω (typ) p-channel MOSFET pass transistor. This provides several advantages over similar designs using a pnp pass transistor, including longer battery life. The p-channel MOSFET requires no base drive, which considerably The MAX8840/MAX8841/MAX8842 include a current limiter, which monitors and controls the pass transistor’s gate voltage, limiting the output current to 200mA. 6 Current Limit Maxim Integrated MAX8840/MAX8841/MAX8842 Ultra-Low-Noise, High PSRR, Low-Dropout, 150mA Linear Regulators in µDFN For design purposes, consider the current limit to be 150mA (min) to 300mA (max). The output can be shorted to ground for an indefinite amount of time without damaging the part. Thermal-Overload Protection Thermal-overload protection limits total power dissipation in the MAX8840/MAX8841/MAX8842. When the junction temperature exceeds TJ = +160°C, the thermal sensor signals the shutdown logic, turning off the pass transistor and allowing the IC to cool down. The thermal sensor turns the pass transistor on again after the IC’s junction temperature drops by 10°C, resulting in a pulsed output during continuous thermal-overload conditions. Thermal-overload protection is designed to protect the MAX8840/MAX8841/MAX8842 in the event of a fault condition. For continual operation, do not exceed the absolute maximum junction temperature rating of TJ = +150°C. Operating Region and Power Dissipation The MAX8840/MAX8841/MAX8842 maximum power dissipation depends on the thermal resistance of the case and circuit board, the temperature difference between the die junction and ambient, and the rate of airflow. The power dissipation across the device is: P = IOUT (VIN - VOUT) The maximum power dissipation is: PMAX = (TJ - TA) / (θJC + θCA) where TJ - TA is the temperature difference between the MAX8840/MAX8841/MAX8842 die junction and the surrounding air, θJC is the thermal resistance of the package, and θCA is the thermal resistance through the PC board, copper traces, and other materials to the surrounding air. The GND pin of the MAX8840/MAX8841/MAX8842 performs the dual function of providing an electrical connection to ground and channeling heat away. Connect the GND pin to ground using a large pad or ground plane. Applications Information Capacitor Selection and Regulator Stability Use a 1µF capacitor on the MAX8840/MAX8841/ MAX8842 input and a 1µF capacitor on the output. Larger input capacitor values and lower ESRs provide better noise rejection and line-transient response. Reduce output noise and improve load-transient response, stability, and power-supply rejection by using large output capacitors. Note that some ceramic dielectrics exhibit large capacitance and ESR variation with temperature. With dielectrics such as Z5U and Y5V, it may be necessary to use a 2.2µF or larger output capacitor to ensure stability at temperatures below -10°C. With X7R or X5R dielectrics, 1µF is sufficient at all operating temperatures. A graph of the Region of Stable COUT ESR vs. Load Current is shown in the Typical Operating Characteristics. Use a 0.01µF bypass capacitor at BP (MAX8840) for low-output voltage noise. The leakage current going into the BP pin should be less than 10nA. Increasing the capacitance slightly decreases the output noise. Values above 0.1µF and below 0.001µF are not recommended. Noise, PSRR, and Transient Response The MAX8840/MAX8841/MAX8842 are designed to deliver ultra-low noise and high PSRR, as well as low dropout and low quiescent currents in battery-powered systems. The MAX8840 power-supply rejection is 78dB at 1kHz and 54dB at 100kHz. The MAX8841/MAX8842 PSRR is 72dB at 1kHz and 46dB at 100kHz (see the Power-Supply Rejection Ratio vs. Frequency graph in the Typical Operating Characteristics). When operating from sources other than batteries, improved supply-noise rejection and transient response can be achieved by increasing the values of the input and output bypass capacitors, and through passive filtering techniques. The Typical Operating Characteristics show the MAX8840/MAX8841/MAX8842 line- and loadtransient responses. Noise Reduction Dropout Voltage For the MAX8840, an external 0.01µF bypass capacitor between BP and OUT with an innovative noise bypass scheme reduces output noises dramatically, exhibiting 11µVRMS of output voltage noise with CBP = 0.01µF and COUT = 1µF. Startup time is minimized by a poweron circuit that precharges the bypass capacitor. A regulator’s minimum dropout voltage determines the lowest usable supply voltage. In battery-powered systems, this determines the useful end-of-life battery voltage. Because the MAX8840/MAX8841/MAX8842 use a p-channel MOSFET pass transistor, their dropout voltage is a function of drain-to-source on-resistance (RDS(ON)) multiplied by the load current (see the Typical Operating Characteristics). Maxim Integrated 7 MAX8840/MAX8841/MAX8842 Ultra-Low-Noise, High PSRR, Low-Dropout, 150mA Linear Regulators in µDFN Functional Diagram IN SHDN SHUTDOWN AND POWER-ON CONTROL MAX8840 MAX8841 MAX8842 ERROR AMP MOS DRIVER WITH ILIMIT P OUT ** THERMAL SENSOR 1.225V REFERENCE AND NOISE BYPASS FB*** ** GND *MAX8840 ONLY **MAX8840/MAX8841 ONLY ***MAX8842 ONLY 8 BP* Maxim Integrated MAX8840/MAX8841/MAX8842 Ultra-Low-Noise, High PSRR, Low-Dropout, 150mA Linear Regulators in µDFN Typical Operating Circuits (continued) INPUT 2V TO 6V IN OUT CIN 1µF ON OFF OUTPUT PRESET 1.5V TO 4.5V MAX8841 SHDN COUT 1µF GND INPUT 2V TO 6V CIN 1µF ON OFF IN OUT MAX8842 OUTPUT ADJUSTABLE 1.5V TO 4.5V R1 FB SHDN GND COUT 1µF R2 Output Voltage Selector Guide PART VOUT (V) TOPMARK MAX8840ELT16+T 1.6 MN MAX8840ELT18+T 1.8 MO MAX8840ELT19+T 1.9 LX MAX8840ELT25+T 2.5 MP MAX8840ELT26+T 2.6 MK MAX8840ELT27+T 2.7 LU MAX8840ELT28+T 2.8 LV MAX8840ELT29+T 2.85 LW MAX8840ELT30+T 3 LZ MAX8840ELT31+T 3.1 ML MAX8840ELT33+T 3.3 MM MAX8841ELT15+T 1.5 MQ MAX8841ELT18+T 1.8 MR MAX8841ELT25+T 2.5 MS MAX8841ELT26+T 2.6 MT MAX8841ELT28+T 2.8 MU MAX8841ELT29+T 2.85 MV MAX8841ELT89+T 2.9 MW MAX8841ELT31+T 3.1 MX MAX8841ELT33+T 3.3 MY MAX8841ELT45+T 4.5 MZ MAX8842ELT+T Adjustable NA (Note: Standard output voltage options, shown in bold, are available. Contact the factory for other output voltages between 1.5V and 4.5V. Minimum order quantity is 15,000 units.) Chip Information TRANSISTOR COUNT: 284 PROCESS: BiCMOS Maxim Integrated Revision History Pages changed at Rev 1: 1 9 MAX8840/MAX8841/MAX8842 Ultra-Low-Noise, High PSRR, Low-Dropout, 150mA Linear Regulators in µDFN Package Information TOPMARK 3 2 5 e A 4 b 5 4 AA PIN 1 MARK 6L UDFN.EPS 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. 6 PIN 1 0.075x45∞ L E 1 A2 D A1 TOP VIEW 3 2 A L1 A 1 L2 BOTTOM VIEW SIDE VIEW COMMON DIMENSIONS b SECTION A-A MIN. 0.65 -0.00 1.45 0.95 0.30 0.00 0.05 0.17 A A1 A2 D E L L1 L2 b e Pkg. Code NOM. 0.72 0.20 -1.50 1.00 0.35 --0.20 0.50 BSC. MAX. 0.80 -0.05 1.55 1.05 0.40 0.08 0.10 0.23 L611-1, L611-2 TITLE: PACKAGE OUTLINE, 6L uDFN, 1.5x1.0x0.8mm APPROVAL -DRAWING NOT TO SCALE- 10 DOCUMENT CONTROL NO. 21-0147 REV. E 1 2 Maxim Integrated MAX8840/MAX8841/MAX8842 Ultra-Low-Noise, High PSRR, Low-Dropout, 150mA Linear Regulators in µDFN Package Information (continued) 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. Translation Table for Calendar Year Code TABLE 1 Calendar Year Legend: 2005 2006 Marked with bar 2007 2008 2009 2010 2011 2012 2013 42-47 48-51 52-05 2014 Blank space - no bar required Translation Table for Payweek Binary Coding TABLE 2 Payweek Legend: 06-11 12-17 Marked with bar 18-23 24-29 30-35 36-41 Blank space - no bar required TITLE: PACKAGE OUTLINE, 6L uDFN, 1.5x1.0x0.8mm APPROVAL -DRAWING NOT TO SCALE- DOCUMENT CONTROL NO. 21-0147 REV. E 2 2 Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 ________________________________ 11 © 2007 Maxim Integrated Products, Inc. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
MAX8840ELT27+G65 价格&库存

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