19-1889; Rev 2; 4/01 150mA, SOT23, Low-Dropout Linear Regulators with Internal Microprocessor Reset Circuit Features The MAX6329/MAX6349 are low-dropout, micropower linear voltage regulators with integrated microprocessor reset circuits. Each is available with preset +3.3V, +2.5V, +1.8V, or adjustable output voltages and can deliver up to 150mA load current. Employing internal Pchannel MOSFET pass transistors, the devices consume only 25µA supply current, independent of the device load. The low supply current, low dropout voltage, and integrated reset functionality make these devices ideal for battery powered portable equipment. The MAX6329/MAX6349 include an internal reset circuit that indicates when the regulator output drops below standard microprocessor supply tolerances (-5% or -10%). The reset output remains asserted for 100ms (min) after the regulator output exceeds the selected reset threshold, ensuring that supply voltages and clock oscillators have stabilized before processor activity is enabled. Reset outputs are available in push-pull (activelow or -high) and open-drain (active-low) options. The internal reset circuit replaces external microprocessor supervisors or RC-based reset time delays. The MAX6329/MAX6349 are optimized for use with a 1µF (min) output capacitor. The regulator output voltage is adjustable with an external resistor-divider network at SET (reset threshold voltages track the desired output voltage). Each device includes thermal shutdown protection, output short-circuit protection, and reverse leakage protection. The MAX6329 includes a shutdown feature to reduce regulator current below 1µA (max) and the MAX6349 offers a manual reset input to assert a microprocessor reset while the regulator output is within specification. ♦ Preset +3.3V/+2.5V/+1.8V or Adjustable Regulator Output ________________________Applications Hand-Held Instruments Electronic Planners Palm Top Computers ♦ ±3.0% Regulator Accuracy Over the Specifed Operating Range ♦ 25µA Supply Current ♦ Low 180mV Dropout at 100mA Load ♦ Small Output Capacitor (1µF min ceramic or tantalum) ♦ Zero Reverse Leakage Current ♦ Thermal and Short-Circuit Protection ♦ Integrated Microprocessor Reset Circuit with 100ms (min) Timeout ♦ Open-Drain and Push-Pull Reset Outputs ♦ Regulator Shutdown Input (MAX6329) or Manual Reset Input (MAX6349) ♦ 6-Pin SOT23 Package Ordering Information TEMP. RANGE MAX6329_ _ UT-T 0°C to +85°C 6 SOT23-6 MAX6349_ _ UT-T 0°C to +85°C 6 SOT23-6 These parts offer a choice of regulator/reset voltages and reset outputs. From the Selector Guide, insert the desired suffix letters into the blanks to complete the part number. Each device is available in nine standard versions. Sample stock is generally held on standard versions only (see Standard Versions table). Standard versions have an order increment requirement of 2500 pieces. Nonstandard versions have an order increment requirement of 10,000 pieces. Contact factory for availability of nonstandard versions. Pin Configuration PCMCIA Cards USB Devices PINPACKAGE PART TOP VIEW Cellular Telephones Cordless Telephones IN 1 Modems GND 2 Selector Guide appears at end of data sheet. (MR) SHDN MAX6329/ MAX6349 3 6 OUT 5 SET 4 RESET/RESET Typical Operating Circuit appears at end of data sheet. SOT23-6 ( ) ARE FOR MAX6349 ONLY. ________________________________________________________________ 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 MAX6329/MAX6349 General Description MAX6329/MAX6349 150mA, SOT23, Low Dropout Linear Regulators with Internal Microprocessor Reset Circuit ABSOLUTE MAXIMUM RATINGS IN to GND .................................................................-0.3V to +7V SHDN to GND...........................................................-0.3V to +7V SET to GND ..............................................-0.3V to (VOUT + 0.3V) MR to GND ...............................................................-0.3V to +7V RESET, RESET to GND, (Push-Pull) ..........0.3V to (VOUT + 0.3V) RESET to GNd,(Open-Drain).....................-0.3V to (VOUT +0.3V) OUT to GND .............................................................-0.3V to +7V Short-Circuit Duration.................................................Continuous Maximum Current into Any Pin (except IN, OUT) ............±20mA Continuous Power Dissipation (TA = +70°C) 6-Pin SOT23 (derate 7.1mW/°C above +70°C).............571mW Thermal Resistance (θJA) ............................................+140°C/W Operating Temperature Range...............................0°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°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. ELECTRICAL CHARACTERISTICS (VIN = +3.6V, TA = 0°C to +85°C. Typical values are at IOUT = 0, COUT = 2.2µF, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL Input Voltage Range VIN Supply Current IQ CONDITIONS MIN TYP 2.5 At GND 25 TA = +25oC Shutdown Supply Current MAX UNITS 5.5 V 50 µA 1 µA REGULATOR Maximum Output Current Output Voltage (Note 2) Dropout Voltage (Note 3) 150 VOUT ∆VDO mA VIN = 4.0V to 5.5V, SET = GND, IOUT = 0 to 100mA, T/S Versions 3.20 3.3 3.40 VIN = 3.0V to 5.5V, SET = GND, IOUT = 0 to 100mA, Z/Y Versions 2.425 2.5 2.575 VIN = 2.5V to 5.5V, SET = GND, IOUT = 0 to 100mA, W/V Versions 1.745 1.8 1.855 ILOAD = 10mA, T/S Versions 20 30 ILOAD = 150mA, T/S Versions 300 360 ILOAD = 10mA, Z/Y Versions 25 35 ILOAD = 150mA, Z/Y Versions 300 400 ILOAD = 10mA, W/V Versions 60 200 750 ILOAD = 150mA, W/V Versions 600 Output Current Limit VIN = VOUT +1V 350 Input Reverse Leakage Current VIN = 0, VOUT = 5.5V 0.01 Startup-Time Response Rising edge of VIN or SHDN to VOUT RL = 68Ω, SET = GND, CL = 1µF 500 SHDN Input Voltage VIL VIH MAX6329 only SHDN = GND or IN MAX6329 only V mV mA 1.5 µA µs 0.3 ✕ VIN 0.8 ✕ VIN V SHDN Input Current I SHDN -1 0.1 1 µA SET Reference Voltage VSET 1.20 1.23 1.26 V SET Input Leakage Current ISET -10 +10 nA Thermal Shutdown Temperature 160 o C Thermal Shutdown Hysteresis 20 o C 2 _______________________________________________________________________________________ 150mA, SOT23, Low Dropout Linear Regulators with Internal Microprocessor Reset Circuit (VIN = +3.6V, TA = -0°C to +85°C. Typical values are at IOUT = 0, COUT = 2.2µF, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS RESET CIRCUIT Reset Threshold (Note 2) VTH MAX63_9T SET = GND 2.92 3.185 MAX63_9S SET = GND 2.75 3.02 MAX63_9Z SET = GND 2.21 2.41 MAX63_9Y SET = GND 2.08 2.28 MAX63_9W SET = GND 1.59 1.74 1.50 1.65 MAX63_9V SET = GND Reset Timeout Period tRP VOUT to Reset Delay tRD VIL MR Input Voltage VIH MAX63_9T/Z/W SET = divider, Figure 1 (Note 4) 0.885 ✕ VADJ 0.965 ✕ VADJ MAX63_9S/Y/V SET = divider, Figure 1 (Note 4) 0.835 ✕ VADJ 0.915 ✕ VADJ 100 200 300 35 MAX6349 only V ms µs 0.2 ✕ VOUT 0.8 ✕ VOUT V MR Minimum Input Pulse MAX6349 only MR Glitch Rejection MAX6349 only 120 ns MR to Reset Delay MAX6349 only 500 ns MR Pullup Resistance MAX6349 only Open-Drain RESET Output Voltage VOL VOUT > 1.0V, ISINK = 50µA 0.3 VOUT > 2.7V, ISINK = 3.2mA 0.4 Open-Drain Reset Output Leakage Current ILKG Push-Pull RESET Output Voltage Push-Pull RESET Output Voltage VOL 10 µs 20 50 1.0 VOUT ≥ 1.0V, ISINK = 50µA VOUT > VTH (max), ISOURCE = 500µA VOL VOUT > VTH (max), ISINK = 3.2mA VOUT < VTH, ISOURCE = 150µA kΩ V µA 0.3 VOUT < VTH (min), ISINK = 3.2mA VOH VOH 1 0.4 V 0.8 ✕ VOUT 0.4 0.8 ✕ VOUT V Note 1: Limits over temperature are guaranteed by design and not production tested. Note 2: Specification from 0°C to less than 25°C is guaranteed to four sigma only. Note 3: Dropout voltage is defined as VIN - VOUT when VOUT is 2% below the value of VOUT for VIN = VOUT + 1V. Note 4: VADJ = VSET(1 + R1/R2), where VSET = 1.23V nominal. _______________________________________________________________________________________ 3 MAX6329/MAX6349 ELECTRICAL CHARACTERISTICS (continued) Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) SHUTDOWN CURRENT vs. INPUT VOLTAGE 25 IOUT = 0 20 15 10 10 9 200 PULSE DURATION (µs) IOUT = 150mA 30 250 MAX6329/49 toc02 8 7 6 5 4 3 150 100 50 2 5 1 0 0 2 3 4 5 6 0 2.5 3.0 3.5 4.0 4.5 5.0 INPUT VOLTAGE (V) INPUT VOLTAGE (V) DROPOUT VOLTAGE vs. LOAD CURRENT POWER-SUPPLY REJECTION RATIO vs. FREQUENCY 250 -20 PSRR (dB) 150 -30 100 -40 50 -50 3.5 3.0 90 120 1.0 150 0 0.01 0.1 1 LOAD CURRENT (mA) FREQUENCY (kHz) REGION OF STABLE COUT ESR vs. LOAD CURRENT OUTPUT NOISE 10 0 1 2 3 125 5 6 SHUTDOWN RESPONSE MAX6329/49 toc08 MAX6329/49 toc09 SHDN 5V/div 100 OUT 5V/div VOUT 10mV/div 75 COUT = 4.7µF 50 25 STABLE REGION RESET 5V/div COUT = 1µF 0 0 15 30 45 60 75 90 105 120 135 150 10ms/div 50ms/div LOAD CURRENT (mA) 4 4 INPUT VOLTAGE (V) MAX6329/49 toc07 150 1.5 MAX63_9S/T -60 60 2.0 COUT = 1µF 0 30 2.5 0.5 VOUT = 3.3V 0 100 OUTPUT VOLTAGE vs. INPUT VOLTAGE -10 200 10 RESET THRESHOLD OVERDRIVE (VTH - VOUT) (mV) 0 MAX6329/49 toc04 300 1 5.5 OUTPUT VOLTAGE (V) 1 MAX6329/49 toc05 0 DROPOUT VOLTAGE (mV) RESET ASSERTS ABOVE THIS LINE MAX6329/49 toc06 GROUND PIN CURRENT (µA) 35 11 SHUTDOWN CURRENT (nA) MAX6329/49 toc01 40 MAXIMUM PULSE DURATION vs. RESET THRESHOLD OVERDRIVE MAX6329/49 toc03 GROUND PIN CURRENT vs. INPUT VOLTAGE COUT ESR (Ω) MAX6329/MAX6349 150mA, SOT23, Low Dropout Linear Regulators with Internal Microprocessor Reset Circuit _______________________________________________________________________________________ 150mA, SOT23, Low Dropout Linear Regulators with Internal Microprocessor Reset Circuit STARTUP RESPONSE LOAD TRANSIENT RESPONSE MAX6329/49 toc10 MAX6329/49 toc11 VIN 5V/div VOUT 50mV/div VOUT 2V/div VIN = 5V IOUT = 0 - 100mA IOUT = 50mA COUT = 1µF 20µs/div 200µs/div LOAD TRANSIENT RESPONSE NEAR DROPOUT LINE TRANSIENT MAX6329/49 toc13 MAX6329/49 toc12 5V VIN 4.5V VOUT 50mV/div VOUT 50mV/div VIN = 3.6V IOUT = 0 - 100mA 50mA VIN = 3.6V IOUT = 0 - 100mA 200µs/div 500µs/div _______________________________________________________________________________________ 5 MAX6329/MAX6349 Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) 150mA, SOT23, Low Dropout Linear Regulators with Internal Microprocessor Reset Circuit MAX6329/MAX6349 Pin Description PIN NAME 1 IN 2 GND Ground. This pin also functions as a heatsink. Solder to large pads or the circuit board ground plane to maximize thermal dissipation. SHDN (MAX6329 Only) Active-Low Shutdown Input. A logic low reduces the supply current to < 1µA. Connect MR (MAX6349 Only) Active-Low Manual Reset Input. A logic low forces a reset. Reset remains asserted for the duration of the reset timeout period after MR transitions from low to high. Leave unconnected or connect to VOUT if not used. MR has an internal pullup resistor of 20kΩ (typ) to OUT. 3 DESCRIPTION Regulator Input. Supply voltage can range from +2.5V to +5.5V. RESET Active-Low Reset Output. RESET remains low while VOUT is below the reset threshold or while MR is held low. RESET remains low for the duration of the reset timeout period after the reset conditions are terminated. RESET Active-High Reset Output. RESET remains high while VOUT is below the reset threshold or while MR is held low. RESET remains high for the duration of the reset timeout period after the reset conditions are terminated. 5 SET Feedback Input for Setting the Output Voltage. Connect to GND to set the output voltage to the preset fixed value (+3.3V, +2.5V, or +1.8V). Connect to an external resistor-divider network for adjustable output operation. 6 OUT Regulator Output. Fixed (+3.3V, +2.5V, or +1.8V) or adjustable (+1.23V to +5.0V). Sources up to 150mA. Bypass with a 1µF minimum capacitor for full rated performance. 4 Detailed Description The MAX6329/MAX6349 are low-dropout, low-quiescent current linear regulators with integrated microprocessor reset circuits. The devices drive loads up to 150mA and are available with preset output voltages of +3.3V, +2.5V, or +1.8V. The internal reset circuit monitors the regulator output voltage and asserts the reset output when the regulator output is below the microprocessor supply tolerance. Regulator The regulator core operates with an input voltage range of +2.5V to +5.5V. The output voltage is offered with three fixed voltage options (+3.3V, +2.5V, and +1.8V) for the MAX6329 and MAX6349. Enable the fixed voltage output by connecting SET to ground. The MAX6329/MAX6349 offer an adjustable output voltage that is implemented with an external resistor-divider network connected to OUT, SET, and GND (Figure 1). SET must be connected to either GND or the external divider. The MAX6329/MAX6349 automatically determine the feedback path depending on the voltage seen at SET. Featured characteristics include ultra-low quiescent current and low dropout voltage. The Typical Operating Circuit shows a typical connection for the MAX6329. 6 OUT is an internally regulated low dropout (LDO) linear regulator that powers a microprocessor. Reset Circuit The reset supervisor circuit is fully integrated in the MAX6329/MAX6349 and uses the same reference voltage as the regulator. Two supply tolerance reset thresholds, -5% and -10%, are provided for each type of device: 2.5V TO 5.5V IN OUT MAX6329 MAX6349 R1 SET GND R2 Figure 1. Adjustable Output Voltage Configuration _______________________________________________________________________________________ 150mA, SOT23, Low Dropout Linear Regulators with Internal Microprocessor Reset Circuit MAX6329/MAX6349 THERMAL SENSOR IN SHDN OUT REVERSE LEAKAGE PROTECTION ERROR AMP MOS DRIVER WITH CURRENT LIMIT SET 1.23V 60mV FEEDBACK MODE COMPARATOR 200ms RESET DELAY OUTPUT STAGE RESET/RESET RESET COMPARATOR GND MR Figure 2. Functional Diagram 5% reset: Reset does not assert until the regulator output voltage is at least -5% out of tolerance and always asserts before the regulator output voltage is -10% out of tolerance. threshold and for at least 100ms (tRP) after VOUT rises above the reset threshold. RESET or RESET also asserts when MR is low (MAX6349). 10% reset: Reset does not assert until the regulator output voltage is at least -10% out of tolerance and always asserts before the regulator output voltage is -15% out of tolerance. SHDN allows for the regulator to shutdown thereby reducing the total IIN consumption of the device. The MAX6329 provides a digitally controlled active-low shutdown function. In shutdown mode the pass transistor, control circuit, reference, and all biases turn off, reducing the supply current to below 1µA. Connect SHDN to IN for normal operation. Reset Output A µP’s reset input starts the µP in a known state. The MAX6329/MAX6349 µP supervisory circuits assert a reset during power-up, power-down, and brownout conditions. Reset is guaranteed to be logic high or low depending on the device chosen (see Selector Guide). RESET or RESET asserts when VOUT is below the reset Shutdown (MAX6329 only) Manual Reset Input (MAX6349 only) Many µP-based products require manual reset capability, allowing the operator, a test technician, or external logic circuitry to initiate a reset. For the MAX6349, a _______________________________________________________________________________________ 7 MAX6329/MAX6349 150mA, SOT23, Low Dropout Linear Regulators with Internal Microprocessor Reset Circuit logic low on MR asserts reset while the regulator is still within tolerance. Reset remains asserted while MR is low and for the reset timeout period (100ms min) after MR returns high. The MR input has an internal pullup of 20kΩ (typ) to OUT. This input can be driven with TTL/CMOS logic levels or with open-drain/collector outputs. Connect a normally open momentary switch from MR to GND to create a manual reset function; external debounce circuitry is not required. If MR is driven from long cables or the device is used in a noisy environment, connect a 0.1µF capacitor from MR to GND to provide additional noise immunity. Reverse Leakage Protection An internal circuit monitors the input and output voltages. When the output voltage is greater than the input voltage, the internal pass transistor and parasitic diodes turn off. OUT powers the device. There is no leakage path from OUT to IN. Therefore, the output can be powered from an auxiliary supply such as a backup battery without any need for additional blocking diodes. Current Limit The MAX6329/MAX6349 include a current limiter that monitors and controls the pass transistor’s gate voltage, limiting the output current to 350mA (typ). The output can be shorted to ground for an indefinite period without damaging the part. Thermal Overload Protection 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. The thermal sensor will turn the pass transistor on again after the IC’s junction temperature cools by 20°C, resulting in a pulsed output during continuous thermaloverload conditions. Thermal overload protection is designed to protect the MAX6329/MAX6349 in the event of fault conditions. For continuous operation, do not exceed the absolute maximum junction temperature rating of TJ = +150°C. Operating Region and Power Dissipation The MAX6329/MAX6349s’ maximum power dissipation depends on the thermal resistance of the case and cir- 8 cuit board, the temperature difference between the die junction and the ambient air, and the rate of airflow. The power dissipation across the device is: P = IOUT (VIN - VOUT) The maximum power dissipation is: PMAX = (TJ - TA) / (θJB + θBA) where TJ - TA is the temperature difference between the die junction and the surrounding air, θJB (or θJC) is the thermal resistance of the package, and θBA is the thermal resistance through the printed circuit board, copper traces, and other materials to the surrounding air. The MAX6329/MAX6349s’ ground pin (GND) performs the dual function of providing an electrical connection to the system ground and channeling heat away. Connect GND to the system ground using a large pad or ground plane. Applications Information Output Voltage Selection The MAX6329/MAX6349 feature dual mode operation: they operate in either a preset voltage mode or an adjustable mode. In preset voltage mode, internal feedback resistors set the MAX6329/MAX6349 to +3.3V, +2.5V, or +1.8V (see Selector Guide). Select this mode by connecting SET to ground. In adjustable mode, select an output between 1.23V to 5.0V using two external resistors connected as a voltage divider to SET (Figure 1). The output voltage is set by the following equation: VOUT = VSET (1 + R1/R2) where VSET = 1.23V. To simplify resistor selection: R1 = R2 (VOUT/VSET - 1) Choose R2 ≥ 100kΩ to optimize power consumption, accuracy, and high-frequency power-supply rejection. Since the VSET tolerance is typically less than ±30mV, the output can be set using fixed resistors instead of variable resistors. In preset voltage mode, impedance between SET and ground should be less than 50kΩ. _______________________________________________________________________________________ 150mA, SOT23, Low Dropout Linear Regulators with Internal Microprocessor Reset Circuit For stable operation over the full temperature range and with load currents up to 150mA, use a 1µF (min) output capacitor. To reduce noise and improve load transient response, stability, and power-supply rejection, use large output capacitor values such as 10µF. 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 2.2µF or more to ensure stability at temperatures below -10°C. With X7R or X5R dielectrics, 1µF should be sufficient at all operating temperatures. A graph of the Region of Stable COUT ESR vs. Load Current is shown in the Typical Operating Characteristics. Operating Characteristics section shows a graph of the Maximum Transient Duration vs. Reset Threshold Overdrive for which reset is not asserted. The graph was produced using negative going OUT transients starting at OUT and ending below the reset threshold by the magnitude indicated (Reset Threshold Overdrive). The graph shows the maximum pulse width that a negative going OUT transient can typically have without triggering a reset pulse. As the amplitude of the transient increases (i.e., goes further below the reset threshold), the maximum allowable pulse width decreases. Typically, an OUT transient that goes only 10mV below the reset threshold and lasts for 75µs will not trigger a reset pulse. To improve power-supply rejection and transient response use a 1µF capacitor between IN and GND. Input-Output (Dropout) Voltage A regulator’s minimum input-output voltage differential (or dropout voltage) determines the lowest useable supply voltage. In battery powered systems, this will determine the useful end-of-life battery voltage. Since the MAX6329/MAX6349 use a P-channel MOSFET pass transistor, their dropout voltage is a function of RDS(ON) multiplied by the load current (see Electrical Characteristics). Chip Information TRANSISTOR COUNT: 800 PROCESS: BiCMOS Negative Going OUT Transients These supervisors are relatively immune to short-duration, negative going OUT transients. The Typical Typical Operating Circuit 2.5V TO 5.5V IN OUT SHDN VCC 1µF µP MAX6329 SET RESET RESET GND GND _______________________________________________________________________________________ 9 MAX6329/MAX6349 Capacitor Selection and Regulator Stability MAX6329/MAX6349 150mA, SOT23, Low Dropout Linear Regulators with Internal Microprocessor Reset Circuit Selector Guide REGULATOR OUTPUT VOLTAGE PACKAGE INFORMATION SHDN MR 3.3V 2.5V 1.8V VOUT RESET TOLERANCE -5% VTH T/Z/W -10% VTH S/Y/V MAX6329TP * * * MAX6329TL * * * MAX6329TH * * * MAX6329SP * * * MAX6329SL * * * MAX6329SH * * * MAX6329ZP * * * MAX6329ZL * * * MAX6329ZH * * * MAX6329YP * * * MAX6329YL * * * MAX6329YH * * * MAX6329WP * * * MAX6329WL * * * MAX6329WH * * * MAX6329VP * * * MAX6329VL * * * MAX6329VH * * * RESET OUTPUT OPENDRAIN (P) RESET PUSHPULL (L) RESET PUSH-PULL (H) * AAIP * * * * * * * * * MAX6349SP * * * MAX6349SL * * * MAX6349SH * * MAX6349ZP * * * MAX6349ZL * * * MAX6349ZH * * * MAX6349YP * * * MAX6349YL * * * * * * MAX6349WL * * * * AAIU * * AAIR * AAJG * * * AAJD * AAJS * * * AAJP * * * MAX6349VL * * * MAX6349VH * * * AAJO AAJN * * AAJR AAJQ * * AAJC AAJT * * AAJF AAJE * * AAIQ AAJH * MAX6349WH AAIT AAIS * MAX6349VP AAIW AAIV * * AAIX * * * AAIZ AAIY * MAX6349TH * AAJA * MAX6349TL AAIK AAJB * * MAX6349YH AAIL * * * AAIN AAIM * * * MAX6349WP AAIO * MAX6349TP TOP MARK AAJM * * AAJL AAJK * AAJJ * AAJI Bold items indicate standard versions. Samples are generally available on standard versions only. Contact factory for availability of nonstandard versions. 10 ______________________________________________________________________________________ 150mA, SOT23, Low Dropout Linear Regulators with Internal Microprocessor Reset Circuit 6LSOT.EPS 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________11 © 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. MAX6329/MAX6349 Package Information