19-3121; Rev 0; 1/04 KIT ATION EVALU E L B AVAILA Dual, 300mA, Low-Noise Linear Regulator with Independent Shutdown in UCSP or TDFN The MAX8559 dual, low-noise, low-dropout (LDO) linear regulator operates from a 2.5V to 6.5V input voltage and delivers at least 300mA of continuous output current. It offers low output noise and low dropout of only 60mV at 100mA. Typical output noise for this device is 32µVRMS, and PSRR is 70dB at 10kHz. Designed with an internal P-channel MOSFET pass transistor, the MAX8559 maintains a low 115µA supply current per LDO, independent of the load current and dropout voltage. Other features include short-circuit protection and thermal-shutdown protection. The MAX8559 includes two independent logic-controlled shutdown inputs and is capable of operating without a bypass capacitor to further reduce total solution size. The MAX8559 is available in a miniature 8-bump UCSP (2mm x 1mm) or 8-pin TDFN (3mm x 3mm) package. Features ♦ ♦ ♦ ♦ Two Low-Dropout-Voltage Regulators Low 32µVRMS Output Noise 300mA Output Current for Each LDO 70dB PSRR at 10kHz ♦ ♦ ♦ ♦ ♦ Independent Shutdown Controls Low 60mV Dropout at 100mA Load 115µA Operating Supply Current per LDO 1.5V to 3.3V Factory-Preset Output Small Ceramic Output Capacitors ♦ Output Current Limit ♦ Thermal-Overload and Short-Circuit Protection ♦ 1.95W Power-Dissipation Capability (TDFN) ♦ 2mm2 Footprint (UCSP) Applications Ordering Information Cellular and Cordless Phones PDAs and Palmtop Computers Notebook Computers Digital Cameras PCMCIA Cards PART TEMP RANGE PIN-PACKAGE MAX8559EBAxy*† -40°C to +85°C 8 UCSP (B8-1) MAX8559ETAxy* -40°C to +85°C 8 TDFN-EP** *xy = Output voltage code (see the Output Voltage Selector Guide). Wireless LAN Cards **EP = Exposed pad. †Future product—contact factory for availability. Hand-Held Instruments Typical Operating Circuit ON OFF SHDNA MAX8559 OUTB BP GND OUTB 6 5 MAX8559ETA 1.5V TO 3.3V 2.2µF/150mA 4.7µF/300mA SHDNB GND 7 2.2µF/150mA 4.7µF/300mA ON OFF 8 0.01µF (OPTIONAL) 1 2 3 4 INB INB 1.5V TO 3.3V SHDNB OUTA SHDNA 2.2µF min INA INA INPUT 2.5V TO 6.5V BP TOP VIEW OUTA Pin Configurations TDFN 3mm x 3mm Pin Configurations continued at end of data sheet. Output Voltage Selector Guide appears at end of data sheet. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX8559 General Description MAX8559 Dual, 300mA, Low-Noise Linear Regulator with Independent Shutdown in UCSP or TDFN ABSOLUTE MAXIMUM RATINGS INA, INB, SHDNA, SHDNB, BP to GND ...................-0.3V to +7V INA to INB..............................................................-0.3V to +0.3V OUTA, OUTB to GND ..................................-0.3V to (VIN + 0.3V) Output Short-Circuit Duration.....................................Continuous Continuous Power Dissipation (TA = +70°C) 8-Bump UCSP (derate 4.7mW/°C above +70°C)..........379mW 8-Pin TDFN (derate 24.4mW/°C above +70°C) ..........1951mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C 8-Pin TDFN Lead Temperature (soldering, 10s)..............+300°C 8-Bump UCSP Solder Profile...........................................(Note 1) Note 1: For UCSP solder profile information, please refer to the application note APP_1891 on the Maxim website, www.maxim-ic.com. 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 = 3.8V, SHDNA = SHDNB = IN_, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER Input Voltage Undervoltage-Lockout Threshold SYMBOL CONDITIONS VIN VUVLO Output Voltage Accuracy Maximum Output Current IOUT_ Output Current Limit ILIM_ MIN TYP 2.5 2.35 MAX UNITS 6.5 V 2.45 V VIN rising, hysteresis is 40mV (typ) 2.15 TA = +25°C, IOUTA = IOUTB = 1mA -1 +1 TA = -40°C to +85°C, IOUTA = IOUTB = 1mA -2 +2 TA = -40°C to +85°C, IOUTA or IOUTB = 0.1mA to 300mA -3 +3 300 310 mA 550 920 No load 180 290 No load, one LDO shutdown 115 Ground Current IQ IOUTA = IOUTB = 100mA 220 Dropout Voltage (Note 2) VOUT_ VIN_ IOUT_ = 1mA 0.6 IOUT_ = 100mA 60 120 Line Regulation ∆VLNR VIN_ = (VOUT_ + 0.1V) to 6.5V, IOUT_ = 1mA 0 +0.15 Output Voltage Noise Power-Supply Ripple Rejection PSRR -0.15 % 100Hz to 100kHz, COUT_ = 10µF, IOUT_ = 1mA, CBP = 0.01µF 32 100Hz to 100kHz, COUT_ = 10µF, IOUT_ = 1mA, CBP = not installed 254 mA µA mV %/ V µVRMS VIN_ = VOUT_ + 1V, 10kHz CBP = 0.01µF, COUT_ = 2.2µF, 100kHz IOUT_ = 50mA 70 dB 54 SHUTDOWN Shutdown Supply Current SHDN Input Threshold 2 ISHDN SHDN_ = 0V VIH Input high voltage VIL Input low voltage TA = +25°C 0.01 TA = -40°C to +85°C 0.1 1 1.6 _______________________________________________________________________________________ 0.4 µA V Dual, 300mA, Low-Noise Linear Regulator with Independent Shutdown in UCSP or TDFN (VIN = 3.8V, SHDNA = SHDNB = IN_, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL SHDN Input Bias Current ISHDN VOUT_ Discharge Resistance in Shutdown CONDITIONS SHDN_ = IN or GND MIN TYP MAX TA = +25°C 10 100 TA = -40°C to +85°C 100 SHDN_ = GND UNITS nA 385 Ω +160 °C 10 °C THERMAL PROTECTION Thermal-Shutdown Temperature TSHDN TJ rising ∆TSHDN Thermal-Shutdown Hysteresis Note 1: All units are 100% production tested at TA = +25°C. Limits over the operating temperature range are guaranteed by design. Note 2: The dropout voltage is defined as VIN - VOUT when VOUT is 100mV below the nominal value of VOUT. Specification only applies when VOUT ≥ 2.5V. Typical Operating Characteristics (VOUTA = VOUTB = 2.85V, VINA = VINB = 3.8V, COUT = 2.2µF (or 4.7µF for 300mA), CBP = 0.01µF, and CIN = 2.2µF (or 4.7µF for 300mA), unless otherwise noted.) GROUND CURRENT vs. LOAD CURRENT 150 100 NO LOAD, BOTH OUTPUTS MAX8559 toc02 BOTH OUTPUTS LOADED 175 150 125 100 75 1 2 3 4 SUPPLY VOLTAGE (V) 5 6 100mA LOAD, BOTH OUTPUTS 200 175 NO LOAD, BOTH OUTPUTS 150 125 100 75 50 25 25 0 0 225 50 50 0 250 GROUND CURRENT (µA) GROUND CURRENT (µA) 200 200 GROUND CURRENT (µA) 100mA LOAD, BOTH OUTPUTS 250 225 MAX8559 toc01 300 GROUND CURRENT vs. TEMPERATURE MAX8559 toc03 GROUND CURRENT vs. SUPPLY VOLTAGE 0 0 50 100 150 200 LOAD CURRENT (mA) 250 300 -40 -15 10 35 60 85 TEMPERATURE (°C) _______________________________________________________________________________________ 3 MAX8559 ELECTRICAL CHARACTERISTICS (continued) Typical Operating Characteristics (continued) (VOUTA = VOUTB = 2.85V, VINA = VINB = 3.8V, COUT = 2.2µF (or 4.7µF for 300mA), CBP = 0.01µF, and CIN = 2.2µF (or 4.7µF for 300mA), unless otherwise noted.) DROPOUT VOLTAGE vs. LOAD CURRENT OUTPUT VOLTAGE ACCURACY vs. LOAD CURRENT 140 120 100 80 60 40 20 -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -0.7 0 0 50 100 150 250 200 300 0 50 100 LOAD CURRENT (mA) OUTPUT VOLTAGE ACCURACY vs. TEMPERATURE 250 300 PSRR vs. FREQUENCY 100mA LOAD, BOTH OUTPUTS MAX8559 toc07 70 60 0.1 PSRR (dB) OUTPUT VOLTAGE ACCURACY (%) 0.3 0 -0.1 -0.2 50 40 30 -0.3 20 -0.4 100mA LOAD, BOTH OUTPUTS 10 -0.5 IOUTA = 50mA 0 -0.6 -40 -15 10 35 60 0.01 85 0.1 1 10 100 1000 TEMPERATURE (°C) FREQUENCY (kHz) CHANNEL-TO-CHANNEL ISOLATION vs. FREQUENCY OUTPUT-NOISE SPECTRAL DENSITY vs. FREQUENCY MAX8559 toc08 100 90 10,000 RLOAD = 100Ω NOISE DENSITY (nV/√Hz) 80 70 60 50 40 30 1000 100 20 10 IOUTA = 10mA 10 0 0.01 0.1 1 10 FREQUENCY (kHz) 4 200 80 MAX8559 toc06 0.4 0.2 150 LOAD CURRENT (mA) MAX8559 toc09 DROPOUT VOLTAGE (mV) 160 0 MAX8559 toc05 180 OUTPUT VOLTAGE ACCURACY (%) MAX8559 toc04 200 CHANNEL-TO-CHANNEL ISOLATION (dB) MAX8559 Dual, 300mA, Low-Noise Linear Regulator with Independent Shutdown in UCSP or TDFN 100 1000 0.01 0.1 1 10 FREQUENCY (kHz) _______________________________________________________________________________________ 100 Dual, 300mA, Low-Noise Linear Regulator with Independent Shutdown in UCSP or TDFN OUTPUT NOISE (10Hz to 100kHz) LINE TRANSIENT MAX8559 toc10 MAX8559 toc11 4.5V VINA 3.5V 1V/div VOUT_ 500µV/div 10mV/div AC-COUPLED VOUTA IOUTA = 100mA 1ms/div 40µs/div LOAD TRANSIENT LOAD TRANSIENT NEAR DROPOUT MAX8559 toc13 MAX8559 toc12 VOUTA VOUTA 20mV/div AC-COUPLED 100mA/div IOUTA 20mV/div AC-COUPLED 100mA/div IOUTA 0 0 10µs/div 10µs/div SHUTDOWN RESPONSE MAX8559 toc14 VOUTA 1V/div 0 1V/div VSHDNA 0 1ms/div _______________________________________________________________________________________ 5 MAX8559 Typical Operating Characteristics (continued) (VOUTA = VOUTB = 2.85V, VINA = VINB = 3.8V, COUT = 2.2µF (or 4.7µF for 300mA), CBP = 0.01µF, and CIN = 2.2µF (or 4.7µF for 300mA), unless otherwise noted.) Dual, 300mA, Low-Noise Linear Regulator with Independent Shutdown in UCSP or TDFN MAX8559 Pin Description PIN NAME TDFN UCSP 1 A1 2 A2 FUNCTION LDO A Regulator Input. Connect to INB. Input voltage can range from 2.5V to 6.5V. Bypass INA with a ceramic capacitor to GND (see the Capacitor Selection and Regulator Stability section). INA SHDNA Shutdown A Input. A logic-low on SHDNA shuts down regulator A. If SHDNA and SHDNB are both low, both regulators and the internal reference are off and the supply current is reduced to 10nA (typ). If either SHDNA or SHDNB is a logic high, the internal reference is on. Connect SHDNA to INA for always-on operation of regulator A. Shutdown B Input. A logic-low on SHDNB shuts down regulator B. If SHDNA and SHDNB are both low, both regulators and the internal reference are off and the supply current is reduced to 10nA (typ). If either SHDNA or SHDNB is a logic high, the internal reference is on. Connect SHDNB to INB for always-on operation of regulator B. 3 A3 SHDNB 4 A4 INB LDO B Regulator Input. Connect to INA. Input voltage can range from 2.5V to 6.5V. Bypass INB with a ceramic capacitor to GND (see the Capacitor Selection and Regulator Stability section). 5 B4 OUTB Regulator B Output. OUTB can source up to 300mA continuous current. Bypass OUTB with a ceramic capacitor to GND (see the Capacitor Selection and Regulator Stability section). During shutdown, OUTB is internally discharged to GND through a 385Ω resistor. 6 B3 GND Ground 7 B2 BP Reference Noise Bypass. Bypass BP with a low-leakage 0.01µF ceramic capacitor for reduced noise at both outputs. 8 B1 OUTA Regulator A Output. OUTA can source up to 300mA continuous current. Bypass OUTA with a ceramic capacitor to GND (see the Capacitor Selection and Regulator Stability section). During shutdown, OUTB is internally discharged to GND through a 385Ω resistor. EP — Exposed Paddle Connect to ground plane. EP also functions as a heatsink. Solder to the circuit-board ground plane to maximize thermal dissipation. Detailed Description The MAX8559 is a dual, low-noise, low-dropout, low-quiescent-current linear regulator designed primarily for battery-powered applications. The regulators are available with preset 1.5V to 3.3V output voltages. These outputs can supply loads up to 300mA with a 4.7µF output capacitor, or up to 150mA with a 2.2µF output capacitor. As illustrated in the Functional Diagram, the MAX8559 consists of a 1.25V reference, error amplifiers, P-channel pass transistors, internal feedback voltage-dividers, and autodischarge circuitry. Feedback Control Loop The 1.25V 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 6 lower, allowing more current to pass to the output and increasing the output voltage. If the feedback voltage is too high, the pass-transistor gate is pulled up, allowing less current to pass to the output. The output voltage is fed back through an internal resistor voltage-divider connected to OUT_. Internal P-Channel Pass Transistor The MAX8559 features two 0.6Ω P-channel MOSFET pass transistors. A P-channel MOSFET provides several advantages over similar designs using PNP pass transistors, including longer battery life. It requires no base drive, reducing quiescent current considerably. PNP-based regulators waste considerable current in dropout when the pass transistor saturates, and they also use high base-drive currents under large loads. The MAX8559 does not suffer from these problems, and with both outputs on it only consumes 180µA of _______________________________________________________________________________________ Dual, 300mA, Low-Noise Linear Regulator with Independent Shutdown in UCSP or TDFN Current Limit The MAX8559 contains two independent current limiters, one for each regulator output, monitoring and controlling the pass transistor’s gate voltage and limiting the output current to 310mA (min). The outputs can be shorted to ground continuously without damaging the part. Low-Noise Operation An external 0.01µF bypass capacitor at BP in conjunction with an internal resistor creates a lowpass filter. The MAX8559 exhibits less than 32µVRMS of output voltage noise with CBP = 0.01µF and COUT = 10µF. The Typical Operating Characteristics show a graph of Output-Noise Spectral Density with these values. If output noise is not critical, the BP capacitor can be removed to reduce total solution size and cost. Shutdown The MAX8559 has independent shutdown control inputs (SHDNA and SHDNB). Drive SHDNA low to shut down OUTA. Drive SHNDB low to shut down OUTB. Drive both SHDNA and SHDNB low to shut down the entire chip, reducing supply current to 0.01µA. Connect SHDNA or SHDNB to a logic high or IN_ for always-on operation of the corresponding LDO. Each LDO output is internally discharged to ground through a 385Ω resistor in shutdown mode. Thermal-Overload Protection Thermal-overload protection limits total power dissipation in the MAX8559. Each regulator has its own independent thermal detector. When one of the regulators’ junction temperature exceeds TJ = +160°C, that regulator’s pass transistor is turned off allowing the IC to cool. The thermal sensor turns the pass transistor on again after the IC’s junction temperature cools by 10°C. This results in a pulsed output during continuous thermal-overload conditions. Operating Region and Power Dissipation The MAX8559 maximum power dissipation depends on the thermal resistance of the case and the circuit board, the temperature difference between the die junction and ambient air, and the rate of airflow. The power dissipation across the device is P = IOUT x (VIN - VOUT). The maximum power dissipation allowed is: PMAX = (TJ - TA) / (RθJB + RθBA) where TJ - TA is the temperature difference between the MAX8559 die junction and the surrounding air, RθJB (RθJC) is the thermal resistance of the package, and RθBA is the thermal resistance through the printed circuit board, copper traces, and other materials to the surrounding air. The exposed paddle of the TDFN package performs the function of channeling heat away. Connect the exposed paddle to the board ground plane. Applications Information Capacitor Selection and Regulator Stability For load currents up to 150mA, use a single 2.2µF capacitor to bypass both inputs of the MAX8559 and a 2.2µF capacitor to bypass each output. Larger inputcapacitor values and lower ESRs provide better supplynoise rejection and line-transient response. To reduce output noise and improve load-transient voltage dips, use larger output capacitors up to 10µF. For stable operation over the full temperature range with load currents up to 300mA, input and output capacitors should be a minimum of 4.7µF. 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 4.7µF or more for up to 150mA load current to ensure stability at temperatures below -10°C. With X7R or X5R dielectrics, 2.2µF is sufficient at all operating temperatures. These regulators are optimized for ceramic capacitors. Tantalum capacitors are not recommended. Use a 0.01µF bypass capacitor at BP for low-output voltage noise. Increasing the capacitance slightly decreases the output noise, but increases the startup time. PSRR and Operation from Sources Other than Batteries The MAX8559 is designed to deliver low-dropout voltages and low quiescent currents in battery-powered systems. Power-supply rejection ratio is 70dB at 10kHz (see Power-Supply Rejection Ratio vs. Frequency in the Typical Operating Characteristics). When operating from sources other than batteries, improved supply-noise rejection and transient response is achieved by increasing the values of the input and output bypass capacitors and through passive RC or CRC filtering techniques. _______________________________________________________________________________________ 7 MAX8559 quiescent current at no load and 220µA with 100mA load current on both outputs (see the Typical Operating Characteristics). A PNP-based regulator has a high dropout voltage that is independent of the load. A Pchannel MOSFET’s dropout voltage is proportional to load current, providing for low dropout voltage at heavy loads and extremely low dropout at lighter loads. MAX8559 Dual, 300mA, Low-Noise Linear Regulator with Independent Shutdown in UCSP or TDFN Load-Transient Considerations The MAX8559 load-transient response graphs (see the Typical Operating Characteristics) show two components of the output response: a DC shift in the output voltage due to the different load currents and the transient response. Typical overshoot for step changes in the load current from 10µA to 100mA is 15mV. Increase the output capacitor’s value and decrease its ESR to attenuate transient spikes. Dropout Voltage A regulator’s minimum input-output voltage differential (or dropout voltage) determines the lowest usable supply voltage. In battery-powered systems, this determines the useful end-of-life battery voltage. Because the MAX8559 uses an internal P-channel MOSFET pass transistor, its dropout voltage is a function of the drainto-source on-resistance (RDS(ON)) multiplied by the load current (see the Typical Operating Characteristics). Calculating the Maximum Output Power in UCSP The maximum output power of the MAX8559 is limited by the maximum power dissipation of the package. By calculating the power dissipation of the package as a function of the input voltage, output voltages, and output currents, the maximum input voltage can be obtained. The maximum power dissipation should not exceed the package’s maximum power rating. P = (VIN(MAX) - VOUTA) x IOUTA + (VIN(MAX) - VOUTB) x IOUTB 8 where: VIN(MAX) = maximum input voltage PMAX = maximum power dissipation of the package (379mW for the UCSP and 1951mW for the TDFN) VOUTA = output voltage of OUTA VOUTB = output voltage of OUTB IOUTA = maximum output current of OUTA IOUTB = maximum output current of OUTB P should be less than PMAX. If P is greater than PMAX, consider the TDFN. Layout Guidelines Due to the low output noise and tight output voltage accuracy required by most applications, careful PC board layout is required. An evaluation kit (MAX8559EVKIT) is available to speed design. Follow these guidelines for good PC board layout: • Keep the input and output paths short and wide if possible, especially at the ground terminals. • Use thick copper PC boards (2oz vs. 1oz) to enhance thermal capabilities. • Place output, input, and bypass capacitors as close as possible to the IC. • Ensure traces to BP and the BP capacitor are away from noisy sources to ensure low output voltage noise. _______________________________________________________________________________________ Dual, 300mA, Low-Noise Linear Regulator with Independent Shutdown in UCSP or TDFN INA MAX8559 SHDNA SHDNB SHUTDOWN AND POWER-ON CONTROL MOS DRIVER WITH ILIMIT ERROR AMP P OUTA THERMAL SENSOR 1.25V REF LDOA SHDNA GND BP INB LDOB OUTB _______________________________________________________________________________________ 9 MAX8559 Functional Diagram 1.80 3.00 AAF MAX8559EBAP2 2.50 1.80 AAG MAX8559EBAK2 2.80 1.80 AAH MAX8559EBAJJ 2.85 2.85 AAC MAX8559EBAJG 2.85 3.00 AAI MAX8559EBAII 2.90 2.90 AAB MAX8559EBAG2 3.00 1.80 AAJ MAX8559EBAGJ 3.00 2.85 AAD MAX8559EBAGG 3.00 3.00 AAA MAX8559ETA8A 1.50 3.30 AIM MAX8559ETA2G 1.80 3.00 ALK MAX8559ETAP2 2.50 1.80 ALL MAX8559ETAK2 2.80 1.80 ALM MAX8559ETAKG 2.80 3.00 AIN MAX8559ETAJ2 2.85 1.80 ALD MAX8559ETAJJ 2.85 2.85 AIG MAX8559ETAJG 2.85 3.00 ALN MAX8559ETAII 2.90 2.90 AIF MAX8559ETAG2 3.00 1.80 ALO MAX8559ETAGG 3.00 3.00 AIE INB MAX8559EBA2G TOP VIEW A1 A2 A3 A4 MAX8559EBA B1 B2 B3 B4 OUTB AAE SHDNB TOP MARK 3.30 GND VOUTB (y) 1.50 SHDNA VOUTA (x) BP PART MAX8559EBA8A Pin Configurations (continued) INA Output Voltage Selector Guide OUTA MAX8559 Dual, 300mA, Low-Noise Linear Regulator with Independent Shutdown in UCSP or TDFN UCSP (2.06mm x 1.03mm) Chip Information TRANSISTOR COUNT: 634 PROCESS: BiCMOS Note: Standard voltage options, shown in bold, are available. Contact the factory for other output voltages between 1.5V and 3.3V. Minimum order quantity is 15,000 units. 10 ______________________________________________________________________________________ Dual, 300mA, Low-Noise Linear Regulator with Independent Shutdown in UCSP or TDFN UCSP 4x2.EPS PACKAGE OUTLINE, 4x2 UCSP 21-0156 A 1 1 ______________________________________________________________________________________ 11 MAX8559 Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) 6, 8, &10L, DFN THIN.EPS MAX8559 Dual, 300mA, Low-Noise Linear Regulator with Independent Shutdown in UCSP or TDFN L A D D2 A2 PIN 1 ID 1 N 1 C0.35 b E PIN 1 INDEX AREA [(N/2)-1] x e REF. E2 DETAIL A e k A1 CL CL L L e e A DALLAS SEMICONDUCTOR PROPRIETARY INFORMATION TITLE: PACKAGE OUTLINE, 6, 8 & 10L, TDFN, EXPOSED PAD, 3x3x0.80 mm NUMBER OF LEADS SHOWN ARE FOR REFERENCE ONLY APPROVAL DOCUMENT CONTROL NO. 21-0137 REV. D 1 2 COMMON DIMENSIONS SYMBOL A MIN. MAX. 0.70 0.80 D 2.90 3.10 E 2.90 3.10 A1 0.00 0.05 L k 0.20 0.40 0.25 MIN. A2 0.20 REF. PACKAGE VARIATIONS PKG. CODE N D2 E2 e JEDEC SPEC b T633-1 6 1.50±0.10 2.30±0.10 0.95 BSC MO229 / WEEA 0.40±0.05 1.90 REF T833-1 8 1.50±0.10 2.30±0.10 0.65 BSC MO229 / WEEC 0.30±0.05 1.95 REF T1033-1 10 1.50±0.10 2.30±0.10 0.50 BSC MO229 / WEED-3 0.25±0.05 2.00 REF [(N/2)-1] x e DALLAS SEMICONDUCTOR PROPRIETARY INFORMATION TITLE: PACKAGE OUTLINE, 6, 8 & 10L, TDFN, EXPOSED PAD, 3x3x0.80 mm APPROVAL DOCUMENT CONTROL NO. 21-0137 REV. D 2 2 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2004 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.