MAX15006/MAX15007 40V, Ultra-Low Quiescent-Current Linear Regulators in 6-Pin TDFN/8-Pin SO General Description Features The MAX15006/MAX15007 ultra-low quiescent-current linear regulators are ideal for use in automotive and battery-operated systems. These devices operate from an input voltage of 4V to 40V, deliver up to 50mA of output current, and consume only 10μA of quiescent current at no load. The internal p-channel pass device keeps the quiescent current low even at full load. The MAX15007 consumes only 3μA current when in shutdown. The MAX15006A/MAX15007A have a fixed 3.3V output while the MAX15006B/MAX15007B have a fixed 5V output voltage. The MAX15006C/MAX15007C feature an adjustable output from 1.8V to 10V. The MAX15007 includes an enable input to turn the device on or off. All devices are short-circuit protected and include thermal shutdown. ♦ Wide Operating Input Voltage Range (4V to 40V) ♦ Guaranteed 50mA Output Current ♦ Low Quiescent Current 10µA (No Load) and 90µA (Full Load) ♦ Operates Through Cold-Crank Condition ♦ Withstands 45V Load Dump ♦ Low Dropout Voltage of 300mV (MAX15006B/MAX15007B) ♦ Stable Operation with Tiny 2.2µF Output Capacitor ♦ Enable Input (MAX15007) ♦ Preset 3.3V and 5.0V Output Voltages ♦ 1.8V to 10V Adjustable Output (MAX15006C/ MAX15007C) ♦ Thermal and Short-Circuit Protection ♦ -40°C to +125°C Operating Temperature Range ♦ Thermally Enhanced 3mm x 3mm 6-Pin TDFN/ 8-Pin SO Packages The MAX15006/MAX15007 operate over the -40°C to +125°C automotive temperature range. These devices are available in space-saving 3mm x 3mm 6-pin TDFN and 8-pin SO thermally enhanced packages. Ordering Information Applications Automotive PART TEMP RANGE PINPACKAGE TOP MARK -40°C to +125°C 8 SO-EP* MAX15006AASA+ — Tire-Pressure Monitoring MAX15006AASA/V+ -40°C to +125°C 8 SO-EP* Industrial MAX15006AATT+ -40°C to +125°C 6 TDFN-EP* APE Telecom MAX15006AATT/V+ -40°C to +125°C 6 TDFN-EP* AUR Networking — Ordering Information continued at end of data sheet. +Denotes a lead(Pb)-free/RoHS-compliant package. /V denotes an automotive qualified part. *EP = Exposed pad. Pin Configurations TOP VIEW OUT OUT (FB) 6 5 GND 4 MAX15006A MAX15006B MAX15006C IN N.C. 2 N.C. EP + 1 1 2 3 IN IN N.C. 3 N.C. 4 + MAX15006A MAX15006B MAX15006C EP 8 OUT 7 N.C. (FB) 6 N.C. 5 GND SO TDFN Pin Configurations continued at end of data sheet. ( ) FOR MAX15006C ONLY. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com. 19-0663; Rev 6; 1/13 MAX15006/MAX15007 40V, Ultra-Low Quiescent-Current Linear Regulators in 6-Pin TDFN/8-Pin SO ABSOLUTE MAXIMUM RATINGS IN to GND ...............................................................-0.3V to +45V EN to GND..............................................................-0.3V to +45V OUT, FB to GND.....................................................-0.3V to +12V OUT Short-Circuit Duration ........................................Continuous Maximum Current Into Any Pin (except IN and OUT) ......±50mA Continuous Power Dissipation (TA = +70°C) TDFN (derate 23.8mW/°C above +70°C) ........................1904mW SO (derate 23.3mW/°C above +70°C)..........................1860mW Operating Temperature Range .........................-40°C to +125°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C Soldering Temperature (reflow) .......................................+260°C PACKAGE THERMAL CHARACTERISTICS (Note 1) TDFN Junction-to-Ambient Thermal Resistance (θJA) ...........42°C/W Junction-to-Case Thermal Resistance (θJC) ...............8.5°C/W SO Junction-to-Ambient Thermal Resistance (θJA) ...........43°C/W Junction-to-Case Thermal Resistance (θJC) ..................7°C/W Note 1: 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. 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 = 14V, IOUT = 1mA, CIN = 0.1µF, COUT = 2.2µF, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical specifications are at TA = +25°C.) (Note 2) PARAMETER Input Voltage Range Ground Current Shutdown Supply Current 2 SYMBOL CONDITIONS VIN IGND ISHDN MIN TYP 4 Regulator on, measured at GND MAX UNITS 40 V IOUT = 0A (MAX15006A/B/D) 10 17 IOUT = 0A (MAX15006C) 8 15 IOUT = 0A (MAX15007A/B) 11 18 IOUT = 0A (MAX15007C) 9 16 IOUT = 100μA (MAX15006A/B/D) 10.5 18 IOUT = 100μA (MAX15006C) 8.5 16 IOUT = 100μA (MAX15007A/B) 11.5 19 IOUT = 100μA (MAX15007C) 9.5 17 IOUT = 1mA (MAX15006A/B/D) 12 20 IOUT = 1mA (MAX15006C) 10 18 IOUT = 1mA (MAX15007A/B) 13 21 IOUT = 1mA (MAX15007C) 11 19 IOUT = 50mA (MAX15006) 90 150 IOUT = 50mA (MAX15007) 93 150 IOUT = 60mA (MAX15006D) 110 150 3 5 Regulator off (MAX15007 only) μA μA Maxim Integrated MAX15006/MAX15007 40V, Ultra-Low Quiescent-Current Linear Regulators in 6-Pin TDFN/8-Pin SO ELECTRICAL CHARACTERISTICS (continued) (VIN = 14V, IOUT = 1mA, CIN = 0.1μF, COUT = 2.2μF, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical specifications are at TA = +25°C.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS REGULATOR Guaranteed Output Current IOUT Output Voltage (Note 3) VOUT Dropout Voltage (Notes 4, 5) VDO VIN VOUT + VDO 50 VIN VOUT + VDO (MAX15006D only) 60 IOUT = 1mA MAX15006A/D, MAX15007A 3.25 3.3 3.35 MAX15006B/MAX15007B 4.925 5.0 5.075 MAX15006C/MAX15007C 1.8 Load Regulation IOUT = 5mA, MAX15006B/MAX15007B 30 53 IOUT = 5mA, MAX15006C/MAX15007C 30 60 IOUT = 50mA, MAX15006B/MAX15007B 300 525 IOUT = 50mA, MAX15006C/MAX15007C 300 600 IOUT = 50mA, MAX15006A/MAX15007A 1000 IOUT = 60mA, MAX15006D 1000 0.25 VIN = VOUT + 3V, I OUT = 100μA to 50mA 0.7 1.5 VIN = VOUT + 3V, I OUT = 100μA to 60mA (MAX15006D) 0.7 1.5 Output Current Limit 80 100Hz to 100kHz, IOUT = 50mA, C OUT = 2.2μF Output Voltage Noise PSRR 350 VOUT = 3.3V 115 VOUT = 5V 179 f = 100Hz, VIN_RIPPLE = 500mVP-P, I OUT = 50mA FB Threshold Voltage VFB ILOAD = 1mA (MAX15006C/MAX15007C only) FB Input Current IFB VFB = 0V, 1.5V (MAX15006C/MAX15007C only) 1.23 -100 mV % % mA μVRMS 66 1.2 V 10 6V VIN 35V, IOUT = 1mA Line Regulation Power-Supply Rejection Ratio mA dB 1.26 V +100 nA ENABLE LOGIC Enable Threshold Voltage VIL 0.4 1.4 VIH Enable Threshold Hysteresis 60 Enable Pulldown Current Internally pulled down to GND 0.5 Enable to Regulation Time (Note 6) 0.4 V mV μA 2 ms THERMAL SHUTDOWN Thermal Shutdown TSHDN Thermal Shutdown Hysteresis THYST Junction temperature rising +165 °C 20 °C Limits at TA = -40°C are guaranteed by design. Output voltage regulation is guaranteed for IOUT ≥ 5μA. Dropout voltage is defined as (VIN - VOUT) when VOUT is 2% below the value of VOUT when VIN = VOUT + 3V. For VOUT = 3.3V, the 700mV dropout indicates VOUT does not reach 2% below VOUT at VIN = VOUT + 3V at minimum 4V input voltage. Note 6: Enable to regulation time is the time the output takes to reach 95% of its final value with VIN = 14V and EN is taken from VIL to VIH in 5ns. Note 2: Note 3: Note 4: Note 5: Maxim Integrated 3 MAX15006/MAX15007 40V, Ultra-Low Quiescent-Current Linear Regulators in 6-Pin TDFN/8-Pin SO Typical Operating Characteristics (VIN = 14V, CIN = 0.1μF, COUT = 2.2μF, VEN = VIN, TA = +25°C, unless otherwise noted.) OUTPUT VOLTAGE vs. INPUT VOLTAGE (MAX15006B/MAX15007B) 5.0 4.5 2.4 2.1 1.5 1.2 3.0 2.5 10 15 20 25 30 35 3.30 1.5 3.24 1.0 3.21 0.5 40 IOUT = 50mA 3.18 IOUT = 0 0 5 3.33 3.27 2.0 IOUT = 0 IOUT = 1mA 3.36 VOUT (V) VOUT (V) 1.8 0 3.15 5 0 10 15 20 25 30 35 40 -50 -25 0 25 50 75 100 125 150 VIN (V) VIN (V) TEMPERATURE (°C) OUTPUT VOLTAGE vs. TEMPERATURE (MAX15006B/MAX15007B) DROPOUT VOLTAGE vs. LOAD CURRENT (MAX15006B/MAX15007B) GROUND CURRENT vs. LOAD CURRENT (MAX15006B/MAX15007B) IOUT = 1mA 350 VDROPOUT (mV) 5.10 5.05 5.00 4.95 4.90 TA = +125°C 400 100 90 80 300 TA = -40°C 200 60 40 30 100 20 4.80 50 10 4.75 0 IOUT = 50mA -50 -25 0 25 50 100 125 150 75 TA = +25°C 50 150 4.85 TA = +125°C 70 TA = +25°C 250 MAX15006 toc06 5.15 450 IGND (μA) 5.20 MAX15006 toc05 500 MAX15006 toc04 5.25 TA = -40°C 0 0 5 10 15 20 25 30 35 40 45 50 0 5 10 15 20 25 30 35 40 45 50 TEMPERATURE (°C) IOUT (mA) IOUT (mA) GROUND CURRENT vs. TEMPERATURE (IOUT = 0) GROUND CURRENT vs. TEMPERATURE (IOUT = 50mA) SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE 16 14 99 10 98 9 8 97 VIN = +40V 8 VIN = +14V 6 VIN = +6V 96 95 94 5 3 92 2 2 91 1 0 90 0 25 50 75 TEMPERATURE (°C) 100 125 150 VIN = +6V 4 93 -25 VIN = +14V 6 4 -50 VIN = +40V 7 ISHDN (μA) 10 IGND (μA) 12 MAX15006 toc09 100 MAX15006 toc07 18 MAX15006 toc08 VOUT (V) 3.39 3.5 0 IGND (μA) 3.42 4.0 0.9 0.6 0.3 4 3.45 MAX15006 toc02 3.0 2.7 VOUT (V) 5.5 MAX15006 toc01 3.6 3.3 OUTPUT VOLTAGE vs. TEMPERATURE (MAX15006A/MAX15007A) MAX15006 toc03 OUTPUT VOLTAGE vs. INPUT VOLTAGE (MAX15006A/MAX15007A) 0 -50 -25 0 25 50 75 TEMPERATURE (°C) 100 125 150 -50 -25 0 25 50 75 100 125 150 TEMPERATURE (°C) Maxim Integrated MAX15006/MAX15007 40V, Ultra-Low Quiescent-Current Linear Regulators in 6-Pin TDFN/8-Pin SO Typical Operating Characteristics (continued) (VIN = 14V, CIN = 0.1μF, COUT = 2.2μF, VEN = VIN, TA = +25°C, unless otherwise noted.) 24 21 NUMBER OF UNITS NUMBER OF UNITS 21 18 15 12 9 MAX15007, IOUT = 0 50 UNITS TESTED 18 15 12 6 27 9 21 18 15 12 9 6 6 3 3 3 0 0 10.4 10.5 10.6 10.7 10.8 10.9 11.0 0 10.8 10.9 11.0 11.1 11.2 11.3 11.6 11.4 IGND (μA) IGND (μA) LOAD-TRANSIENT RESPONSE (MAX15006B/MAX15007B) INPUT-VOLTAGE STEP RESPONSE (MAX15006B/MAX15007B, IOUT = 1mA) MAX15006 toc13 MAX15007, IOUT = 0 50 UNITS TESTED 24 NUMBER OF UNITS 24 27 MAX15006 toc11 MAX15007, IOUT = 0 50 UNITS TESTED MAX15006 toc10 27 GROUND CURRENT DISTRIBUTION (TA = +125°C) GROUND CURRENT DISTRIBUTION (TA = +25°C) MAX15006 toc12 GROUND CURRENT DISTRIBUTION (TA = -40°C) 11.7 11.8 11.9 12.0 12.1 IGND (μA) STARTUP RESPONSE MAX15006 toc14 VOUT AC-COUPLED 200mV/div 50mA IOUT 1mA MAX15006 toc15 18V VIN 14V VIN 5V/div VOUT AC-COUPLED 100mV/div VOUT 2V/div MAX15006B/MAX15007B IOUT = 1mA 400μs/div 400μs/div ENABLE STARTUP RESPONSE ENABLE STARTUP RESPONSE MAX15006 toc16 MAX15006B/MAX15007B IOUT = 0 400μs/div Maxim Integrated 200μs/div ENABLE STARTUP RESPONSE MAX15006 toc17 MAX15006 toc18 EN 1V/div EN 1V/div EN 1V/div VOUT 2V/div VOUT 2V/div VOUT 2V/div MAX15006B/MAX15007B IOUT = 50mA 400μs/div MAX15006B/MAX15007B VIN = 40V, IOUT = 0 400μs/div 5 MAX15006/MAX15007 40V, Ultra-Low Quiescent-Current Linear Regulators in 6-Pin TDFN/8-Pin SO Typical Operating Characteristics (continued) (VIN = 14V, CIN = 0.1μF, COUT = 2.2μF, VEN = VIN, TA = +25°C, unless otherwise noted.) POWER-SUPPLY REJECTION RATIO vs. FREQUENCY IOUT = 50mA -10 -20 EN 1V/div PSRR (dB) -30 COUT = 2.2μF -40 -50 -60 -70 VOUT 2V/div -80 MAX15006B/MAX15007B VIN = 40V, IOUT = 50mA COUT = 10μF -90 -100 0.01 400μs/div 0.1 1 10 100 10 MAX15006 toc21 0 OUTPUT-NOISE SPECTRAL DENSITY vs. FREQUENCY OUTPUT-NOISE SPECTRAL DENSITY (μV/√Hz) MAX15006 toc19 MAX15006 toc20 ENABLE STARTUP RESPONSE 1 0.1 MAX15006A/MAX15007A IOUT = 50mA 0.01 1000 0.01 0.1 FREQUENCY (kHz) 100 MAX15006 toc23 150 MAX15006 toc22 135 120 105 1 en (μVRMS) 0.1 90 75 60 45 30 MAX15006B/MAX15007B IOUT = 50mA 15 MAX15006A/MAX15007A 0 0.01 0.01 0.1 1 0 100 10 5 10 15 20 25 30 35 40 45 50 FREQUENCY (kHz) IOUT (mA) FB VOLTAGE vs. INPUT VOLTAGE (MAX15007C, VOUT = 5V) FB VOLTAGE vs. TEMPERATURE (MAX15007C, VOUT = 5V) 1.230 MAX15006 toc24 1.230 1.229 MAX15006 toc25 OUTPUT-NOISE SPECTRAL DENSITY (μV/√Hz) 10 OUTPUT VOLTAGE NOISE vs. LOAD CURRENT OUTPUT-NOISE SPECTRAL DENSITY vs. FREQUENCY 10 1 FREQUENCY (kHz) 1.229 1.228 VFB (V) VFB (V) 1.227 1.228 1.226 1.225 1.224 1.227 1.223 1.222 1.226 1.221 1.220 1.225 5 10 15 20 25 VIN (V) 6 30 35 40 -50 -25 0 25 50 75 100 125 150 TEMPERATURE (°C) Maxim Integrated MAX15006/MAX15007 40V, Ultra-Low Quiescent-Current Linear Regulators in 6-Pin TDFN/8-Pin SO Typical Operating Characteristics (continued) (VIN = 14V, CIN = 0.1μF, COUT = 2.2μF, VEN = VIN, TA = +25°C, unless otherwise noted.) OUTPUT VOLTAGE NOISE vs. OUTPUT CAPACITANCE CLAMPED LOAD DUMP (IOUT = 0) MAX15006 toc27 MAX15006 toc26 150 135 120 40V VIN en (μVRMS) 105 90 13.5V 75 60 45 VOUT AC-COUPLED 20mV/div 30 MAX15006A/MAX15007A IOUT = 25mA 15 0 0 2 4 6 8 10 12 14 16 18 20 22 100ms/div COUT (μF) Pin Description PIN MAX15006A/B MAX15006C MAX15007A/B MAX15007C NAME FUNCTION Regulator Supply Input. Supply voltage ranges from 4V to 40V. Bypass with a 0.1μF capacitor to GND. TDFN SO TDFN SO TDFN SO TDFN SO 1, 2 1 1, 2 1 1, 2 1 1, 2 1 IN 3 2, 3, 4, 6, 7 3 2, 3, 4, 6 — 2, 4, 6, 7 — 2, 4, 6 N.C. No Connection. Not internally connected. 4 5 4 5 4 5 4 5 GND Ground 5, 6 8 6 8 5, 6 8 6 8 OUT Regulator Output. Bypass OUT to GND with a low-ESR capacitor with a minimum 2.2μF. — — — — — — Maxim Integrated 5 — — 7 — — — 3 — — 3 — 5 3 — 7 3 — FB Feedback Regulation Set-Point. Connect an external resistive divider network from OUT to FB to GND to adjust the output voltage from 1.8V to 10V. EN Active-High Enable Input. Force EN high (or connect to VIN) to turn the regulator on. Pull EN low (or leave unconnected) to place the device in a low-power shutdown mode. EN is internally pulled down to GND through a 0.5μA sink current. EP Exposed Pad. Internally connected to GND. Connect EP to the ground plane for enhanced thermal performance. Do not use EP as a ground connection. 7 MAX15006/MAX15007 40V, Ultra-Low Quiescent-Current Linear Regulators in 6-Pin TDFN/8-Pin SO Functional Diagrams IN + THERMAL SENSOR 1.242V REF FET DRIVER WITH CURRENT LIMIT ERROR AMPLIFIER OUT FB (FOR MAX15006C ONLY) GND MAX15006 (FOR MAX15006A/B ONLY) Figure 1. MAX15006 Simplified Functional Diagram IN EN CONTROL LOGIC + THERMAL SENSOR 1.242V REF FET DRIVER WITH CURRENT LIMIT ERROR AMPLIFIER OUT FB (FOR MAX15007C ONLY) GND MAX15007 (FOR MAX150076A/B ONLY) Figure 2. MAX15007 Simplified Functional Diagram 8 Maxim Integrated MAX15006/MAX15007 40V, Ultra-Low Quiescent-Current Linear Regulators in 6-Pin TDFN/8-Pin SO The MAX15006/MAX15007 high-voltage linear regulators operate over a 4V to 40V input voltage range. These devices guarantee 50mA load drive, and offer preset output voltages of +3.3V (MAX15006A/MAX15007A) or +5V (MAX15006B/MAX15007B) or an adjustable voltage output from 1.8V to 10V (MAX15006C/MAX15007C). Thermal shutdown and short-circuit protection prevent damage during overtemperature and overcurrent conditions. The MAX15007 includes an enable input (EN) allowing the regulators to be turned on/off using a logiclevel voltage. Driving EN high turns on the device while driving EN low places the device in a low-power shutdown mode. In shutdown, the supply current is reduced to 3μA (typ). The MAX15006/MAX15007 operate over the -40°C to +125°C automotive temperature range. All devices are available in thermally enhanced 6-pin TDFN and 8-pin SO packages capable of dissipating 1.904W and 1.860W at TA = +70°C, respectively. Regulator VIN = 18V, VOUT = 5V 50 OUTPUT CURRENT (mA) 45 VIN = 18V, VOUT = 3.3V 40 35 30 25 VIN = 26V, VOUT = 5V 20 15 10 VIN = 26V, VOUT = 3.3V 55 VIN = 18V, VOUT = 5V 50 45 VIN = 18V, VOUT = 3.3V 40 35 30 25 VIN = 26V, VOUT = 5V 20 15 10 VIN = 26V, VOUT = 3.3V 5 5 0 0 80 85 90 95 100 105 110 115 120 125 130 80 85 90 95 100 105 110 115 120 125 130 AMBIENT TEMPERATURE (°C) AMBIENT TEMPERATURE (°C) Figure 3a. Minimum Output Current vs. Ambient Temperature (6-Pin TDFN-EP) Maxim Integrated Output Short-Circuit Current Limit The MAX15006/MAX15007 feature a 175mA current limit. The output can be shorted to GND for an indefinite period of time without damage to the device. During a short circuit, the power dissipated across the pass transistor can quickly heat the device. When the die temperature reaches +165°C, the MAX15006/ MAX15007 shut down and automatically restart after the die temperature cools by 20°C. OUTPUT CURRENT (mA) 55 Thermal Protection When the junction temperature exceeds +165°C, an internal thermal sensor turns the pass transistor off, and allows the device to cool. The thermal sensor turns the pass transistor on again after the junction temperature cools by 20°C. This results in a cycled output during continuous thermal-overload conditions. Thermal protection protects the MAX15006/MAX15007 in the event of fault conditions. Operation at TJ = +150°C without going into thermal shutdown is not guaranteed. Use Figures 3a and 3b to determine the minimum guaranteed output current. MAX15006 fig03a The regulator accepts an input voltage from 4V to 40V. The MAX15006A/MAX15007A have a fixed 3.3V output voltage while the MAX15006B/MAX15007B offer a fixed 5V output voltage. The MAX15006C/MAX15007C feature an adjustable voltage output by connecting an external resistive divider from OUT to FB and to GND (see the Output Voltage Setting section). EN Input (MAX15007 Only) EN is an active-high, logic-level enable input that turns the device on or off. Drive EN high to turn the device on. An internal 0.5μA pulldown current keeps the MAX15007 in shutdown mode when driven by a threestate driver in high-impedance mode, or an open-drain driver. While in shutdown, the device consumes only 3μA (typ). EN withstands voltages up to 40V, allowing it to be driven by high input level voltages or connected to IN for always-on operation. MAX15006 fig03b Detailed Description Figure 3b. Minimum Output Current vs. Ambient Temperature (8-Pin SO-EP) 9 MAX15006/MAX15007 40V, Ultra-Low Quiescent-Current Linear Regulators in 6-Pin TDFN/8-Pin SO Output Voltage Setting The MAX15006C/MAX15007C provide an adjustable output voltage from 1.8V to 10V and do not operate in a preset output voltage mode. Connect an external resistive divider from OUT to FB to GND as shown in Figure 4 to set the desired output voltage. VOUT is calculated as follows: R1 ⎞ ⎛ VOUT = VFB × ⎜ 1 + ⎝ R2 ⎟⎠ For the SO-EP package: ⎧1 . 8605W for T A ≤ + 70 °C ⎫ ⎪ ⎪ PD = ⎨ W ⎬ ⎪1 . 8605W − 0 . 0233 °C x ( TA – 70°C ) for + 70 °C < T A ≤ + 125 °C ⎪ ⎩ ⎭ After determining the allowable package dissipation, calculate the maximum allowable output current, without exceeding the +150°C junction temperature, using the following formula: IOUT(MAX) = where V FB = 1.23V and a 5μA minimum current is required in the external divider for stability. Available Output Current Calculation The MAX15006/MAX15007 provide up to 50mA of continuous output current. The input voltage range extends to 40V. Package power dissipation limits the amount of output current available for a given input/output voltage and ambient temperature. Figure 5 shows the maximum allowable power dissipation for these devices to keep the junction temperature below +150°C. Figure 5 assumes that the exposed metal pad of the MAX15006/MAX15007 is soldered to 1in2 of PCB copper. Use Figure 5 to determine the allowable package dissipation for a given ambient temperature. Alternately, use the following formulas to calculate the allowable package dissipation. For the TDFN package: ⎧1. 9048 W for T A ≤ + 70 °C ⎫ ⎪ ⎪ PD = ⎨ W ⎬ ⎪1. 9048 W − 0 . 0238 °C x ( TA – 70°C ) for + 70 °C < T A ≤ + 125 °C ⎪ ⎩ ⎭ +4V TO +40V 0.1μF PD = 1.9048W − 0.0238 IOUT(MAX) = R2 GND 1.9408W (6-PIN TDFN) 2.2 2.0 PD (W) EN 595.8mW = 26.2mA 26V − 3.3V 2.4 R1 FB ON W (125°C − 70°C ) = 595.8mW °C And establish the maximum output current: 2.2μF MAX15007C OFF The above equations do not include the negligible power dissipation from self-heating due to the IC ground current. Example 1 (TDFN Package): TA = +125°C VIN = 26V VOUT = 3.3V Calculate the maximum allowable package dissipation at the given temperature as follows: +1.8V TO +10V OUT IN PD ≤ 50mA VIN − VOUT MAX15006 fig04 Applications Information 1.8 1.6 1.4 DERATE 23.8mW/°C 1.8605W (8-PIN SO-EP) 1.2 1.0 DERATE 23.3mW/°C 0.8 0.6 0.4 0.2 0 VOUT = VFB (1 + R1/R2) VFB = 1.23V Figure 4. Setting the Adjustable Output Voltage 10 0 20 40 60 80 100 TEMPERATURE (°C) 120 140 Figure 5. Calculated Maximum Power Dissipation vs. Ambient Temperature Maxim Integrated MAX15006/MAX15007 40V, Ultra-Low Quiescent-Current Linear Regulators in 6-Pin TDFN/8-Pin SO Example 2 (TDFN Package): TA = +85°C VIN = 14V VOUT = 5V Calculate the maximum allowable package dissipation at the given temperature as follows: W PD = 1.9048W − 0.0238 ( 85°C − 70°C ) = 1.5478W °C Then determine the maximum output current: IOUT(MAX) = 1.5478W = 172mA ⇒ I OUT(MAX X) = 50mA 14V − 5V Example 3 (TDFN Package): TA = +50°C VIN = 9V VOUT = 5V Calculate the maximum allowable package dissipation at the given temperature as follows: In Examples 2 and 3, the maximum output current is calculated as 172mA and 476mA, respectively; however, the allowable output current cannot exceed 50mA. Alternately, use Figures 6a and 6b to quickly determine the maximum allowable output current for selected ambient temperatures and input voltages. Output-Capacitor Selection and Regulator Stability For stable operation over the full temperature range and with load currents up to 50mA, use a low-ESR 2.2μF (min) ceramic or tantalum output capacitor. Use larger output-capacitor values such as 22μF to reduce noise, improve load-transient response, and powersupply rejection. Some ceramic dielectrics exhibit large capacitance and ESR variations with temperature. Ensure the minimum capacitance under worst-case conditions does not drop below 1.3μF to ensure output stability. With an X7R dielectric, 2.2μF should be sufficient at all operating temperatures. PD = 1.9048W Find the maximum output current: 1.9048W = 476mA ⇒ I OUT(MAX)) = 50mA 9V − 5V IOUT(MAX) (mA) 55 50 45 TA = +70°C 40 35 30 TA = +85°C TA = +125°C 25 20 15 10 5 MAX15006 fig05b 50 45 TA = +70°C 40 35 TA = +85°C 30 25 TA = +125°C 20 15 10 VOUT = 5V 6-PIN TDFN VOUT = 5V 8-PIN SO-EP 5 0 0 0 5 10 15 20 25 30 35 40 VIN (V) Figure 6a. Calculated Maximum Output Current vs. Input Voltage (6-Pin TDFN-EP) Maxim Integrated 60 MAX15006 fig05a 60 55 IOUT(MAX) (mA) IOUT(MAX) = 0 5 10 15 20 25 30 35 40 VIN (V) Figure 6b. Calculated Maximum Output Current vs. Input Voltage (8-Pin SO-EP) 11 MAX15006/MAX15007 40V, Ultra-Low Quiescent-Current Linear Regulators in 6-Pin TDFN/8-Pin SO Selector Guide PART ENABLE INPUT FIXED OUTPUT VOLTAGE (V) ADJUSTABLE OUTPUT VOLTAGE (V) PIN-PACKAGE MAX15006AASA+ — 3.3 — 8 SO-EP 6 TDFN-EP MAX15006AATT+ — 3.3 — MAX15006BASA+ — 5 — 8 SO-EP MAX15006BATT+ — 5 — 6 TDFN-EP MAX15006CASA+ — — ADJ (1.8 to 10) 8 SO-EP MAX15006CATT+ — — ADJ (1.8 to 10) 6 TDFN-EP MAX15007AASA+ √ 3.3 — 8 SO-EP 6 TDFN-EP MAX15007AATT+ √ 3.3 — MAX15007BASA+ √ 5 — 8 SO-EP MAX15007BATT+ √ 5 — 6 TDFN-EP MAX15007CASA+ √ — ADJ (1.8 to 10) 8 SO-EP MAX15007CATT+ √ — ADJ (1.8 to 10) 6 TDFN-EP Pin Configurations (continued) TOP VIEW OUT OUT (FB) 6 5 GND 4 IN MAX15007A MAX15007B MAX15007C EP + 1 2 3 IN IN EN TDFN 12 1 N.C. 2 EN 3 N.C. 4 + MAX15007A MAX15007B MAX15007C EP 8 OUT 7 N.C. (FB) 6 N.C. 5 GND SO ( ) FOR MAX15007C ONLY. Maxim Integrated MAX15006/MAX15007 40V, Ultra-Low Quiescent-Current Linear Regulators in 6-Pin TDFN/8-Pin SO Ordering Information (continued) PART TEMP RANGE PINPACKAGE TOP MARK MAX15006BASA+ -40°C to +125°C 8 SO-EP* — MAX15006BASA/V+ -40°C to +125°C 8 SO-EP* MAX15006BATT+ -40°C to +125°C 6 TDFN-EP* APF MAX15006BATT/V+ -40°C to +125°C 6 TDFN-EP* AUN — MAX15006CATT+ -40°C to +125°C 6 TDFN-EP* API MAX15006CATT/V+ -40°C to +125°C 6 TDFN-EP* AVA MAX15006DATT/V+ -40°C to +125°C 6 TDFN-EP* AVL MAX15007AASA+ -40°C to +125°C 8 SO-EP* MAX15007AATT+ -40°C to +125°C 6 TDFN-EP* — Chip Information PROCESS: BiCMOS Package Information 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 TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO. 6 TDFN-EP T633+2 21-0137 90-0058 8 SO-EP S8E+12 21-0111 90-0150 APG MAX15007BASA+ -40°C to +125°C 8 SO-EP* MAX15007BATT+ -40°C to +125°C 6 TDFN-EP* APH — MAX15007BATT/V+ -40°C to +125°C 6 TDFN-EP* AVK MAX15007CATT+ -40°C to +125°C 6 TDFN-EP* APJ MAX15007CATT/V+ -40°C to +125°C 6 TDFN-EP* AUU +Denotes a lead(Pb)-free/RoHS-compliant package. /V denotes an automotive qualified part. *EP = Exposed pad. Maxim Integrated 13 MAX15006/MAX15007 40V, Ultra-Low Quiescent-Current Linear Regulators in 6-Pin TDFN/8-Pin SO Revision History PAGES CHANGED REVISION NUMBER REVISION DATE 0 10/06 Initial release 1 5/08 Added MAX15006C/MAX15007C adjustable version to data sheet including Ordering Information, Electrical Characteristics, Pin Description, and Detailed Description 1–14 2 11/09 Added the MAX15006A/MAX15006B automotive packages to the Ordering Information 1, 13 3 12/10 Added the MAX15006CATT and MAX15007CATT automotive packages to the Ordering Information 13 4 7/11 Added the MAX15006AASA and MAX15006BASA automotive packages to the Ordering Information 1, 13 5 11/11 Changed the maximum IOUT = 50mA dropout of the MAX15006A/MAX15007A from 700mV to 1000mV 6 1/13 Added MAX15006DATT/V and MAX15007BATT/V DESCRIPTION — 3 1–14 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. 14 © 2013 Maxim Integrated Products, Inc. Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000 Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.