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MAX16010TAA-T

MAX16010TAA-T

  • 厂商:

    AD(亚德诺)

  • 封装:

    WDFN8

  • 描述:

    IC SUPERVISOR 2 CHANNEL 8TDFN

  • 数据手册
  • 价格&库存
MAX16010TAA-T 数据手册
MAX16010–MAX16014 Ultra-Small, Overvoltage Protection/ Detection Circuits General Description Features The MAX16010–MAX16014 is a family of ultra-small, lowpower, overvoltage-protection circuits for high-voltage, high-transient systems such as those found in telecom and industrial applications. These devices operate over a wide 5.5V to 72V supply voltage range, making them also suitable for other applications such as battery stacks, notebook computers, and servers. The MAX16010 and MAX16011 offer two independent comparators for monitoring both undervoltage and overvoltage conditions. These comparators offer open-drain outputs capable of handling voltages up to 72V. The MAX16010 features complementary enable inputs (EN/ EN), while the MAX16011 features an active-high enable input and a selectable active-high/low OUTB output. The MAX16012 offers a single comparator and an independent reference output. The reference output can be directly connected to either the inverting or noninverting input to select the comparator output logic. The MAX16013 and MAX16014 are overvoltageprotection circuits that are capable of driving two p-channel MOSFETs to prevent reverse-battery and overvoltage conditions. One MOSFET (P1) eliminates the need for external diodes, thus minimizing the input voltage drop. The second MOSFET (P2) isolates the load or regulates the output voltage during an overvoltage condition. The MAX16014 keeps the MOSFET (P2) latched off until the input power is cycled. The MAX16010 and MAX16011 are available in small 8-pin TDFN packages, while the MAX16012–MAX16014 are available in small 6-pin TDFN packages. These devices are fully specified from -40°C to +125°C. ●● Wide 5.5V to 72V Supply Voltage Range ●● Open-Drain Outputs Up to 72V (MAX16010/MAX16011/MAX16012) ●● Fast 2μs (max) Propagation Delay ●● Internal Undervoltage Lockout ●● p-Channel MOSFET Latches Off After an Overvoltage Condition (MAX16014) ●● Adjustable Overvoltage Threshold ●● -40°C to +125°C Operating Temperature Range ●● Small 3mm x 3mm TDFN Package Ordering Information PART* TEMP RANGE MAX16010TA_-T -40°C to +125°C 8 TDFN-EP** MAX16011TA_-T -40°C to +125°C 8 TDFN-EP** MAX16012TT-T -40°C to +125°C 6 TDFN-EP** MAX16013TT-T -40°C to +125°C 6 TDFN-EP** MAX16014TT-T -40°C to +125°C 6 TDFN-EP** Note: Replace the “_” with “A” for 0.5% hysteresis, “B” for 5% hysteresis, and “C” for 7.5% hysteresis. *Replace -T with +T for lead(Pb)-free/RoHS-compliant packages. **EP = Exposed pad. Typical Operating Circuit P2 P1 VBATT Applications ●● ●● ●● ●● ●● 2MΩ* Industrial 48V Telecom/Server/Networking FireWire® Notebook Computers Multicell Battery-Stack-Powered Equipment GATE1 R1 SET R2 FireWire is a registered trademark of Apple, Inc. Pin Configurations appear at end of data sheet 19-3693; Rev 5; 2/15 PIN-PACKAGE *OPTIONAL VCC MAX16013 MAX16014 GND GATE2 MAX16010–MAX16014 Ultra-Small, Overvoltage Protection/ Detection Circuits Absolute Maximum Ratings (All pins referenced to GND, unless otherwise noted.) VCC.........................................................................-0.3V to +80V EN, EN, LOGIC......................................... -0.3V to (VCC + 0.3V) INA+, INB-, IN+, IN-, REF, SET.............................-0.3V to +12V OUTA, OUTB, OUT................................................-0.3V to +80V GATE1, GATE2 to VCC..........................................-12V to +0.3V GATE1, GATE2.........................................-0.3V to (VCC + 0.3V) Current Sink/Source (all pins).............................................50mA Continuous Power Dissipation (TA = +70°C) 6-Pin TDFN (derate 18.2mW/°C above +70°C).........1455mW 8-Pin TDFN (derate 18.2mW/°C above +70°C).........1455mW Operating Temperature Range.......................... -40°C to +125°C Maximum Junction Temperature......................................+150°C Storage Temperature Range............................. -60°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 (VCC = 14V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL Supply Voltage Range VCC Input Supply Current ICC VCC Undervoltage Lockout VUVLO CONDITIONS VTH- Threshold-Voltage Hysteresis 30 25 40 4.75 5 5.25 1.215 1.245 1.265 0.5% hysteresis, MAX16010/MAX16011 1.21 1.223 1.26 5.0% hysteresis, MAX16010/MAX16011/ MAX16013/MAX16014 1.15 1.18 1.21 7.5% hysteresis MAX16010/MAX16011 1.12 1.15 1.18 VCC rising, part enabled, VINA+ = 2V, OUTA deasserted (MAX16010/MAX16011), VIN = 2V, VOUT deasserted (MAX16012), VSET = 0V, GATE2 = VCLMP (MAX16013/ MAX16014) MAX16010TAA/MAX16011TAA 0.5 MAX16010TAB/MAX16011TAB/ MAX16013/MAX16014 5.0 tSTART VCC rising from 0 to 5.5V IN_-to-OUT/SET-to-GATE2 Propagation Delay tPROP IN_/SET rising from (VTH - 100mV) to (VTH + 100mV) or falling from (VTH + 100mV) to (VTH - 100mV) (no load) OUT_ Output-Voltage Low VOL µA V V % 7.5 -100 +100 0 Startup Response Time www.maximintegrated.com V 20 SET/IN_ = 2V ILEAK UNITS 72.0 VCC = 48V IN_ Operating Voltage Range OUT_ Leakage Current MAX VCC = 12V No load MAX16010TAC/MAX16011TAC SET/IN_ Input Current TYP 5.5 VTH+ INA+/INB-/SET Threshold Voltage MIN 4 100 nA V µs 2 µs VCC ≥ 5.5V, ISINK = 3.2mA 0.4 V VCC ≥ 2.8V, ISINK = 100µA 0.4 V OUT_ = 72V 500 nA Maxim Integrated │  2 MAX16010–MAX16014 Ultra-Small, Overvoltage Protection/ Detection Circuits Electrical Characteristics (continued) (VCC = 14V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX VIL EN/EN, LOGIC Input Voltage UNITS 0.4 VIH V 1.4 EN/EN, LOGIC Input Current 1 EN/EN, LOGIC Pulse Width 2 µA 10 µs VCC-to-GATE_ Output Low Voltage IGATE_SINK = 75µA, IGATE_SOURCE = 1µA, VCC = 14V 7 11 V VCC-to-GATE_ Clamp Voltage MAX16012 VCC = 24V 12 18 V 1.320 V Reference Output Voltage VREF Reference Short-Circuit Current No load ISHORT Reference Load Regulation Input Offset Voltage 1.275 1.3 REF = GND 100 Sourcing, 0 ≤ IREF ≤ 1µA 0.1 Sinking, -1µA P IREF ≤ 0 0.1 VCM = 0 to 2V µA mV/µA -12.5 +12.5 mV Input Offset Current 3 nA Input Hysteresis 8 mV Common-Mode Voltage Range CMVR Common-Mode Rejection Ratio CMRR MAX16012, DC 0 70 2.0 dB V Comparator Power-Supply Rejection Ratio PSRR MAX16012, DC 70 dB Note 1: 100% production tested at TA = +25°C and TA = +125°C. Specifications at TA = -40°C are guaranteed by design. Typical Operating Characteristics (VIN = 14V, TA = +25°C, unless otherwise noted.) 30 25 20 15 10 MAX16012 IN+ = IN- = GND MAX16010/MAX16011 INA+ = INB- = GND OUTPUTS ENABLED 26.40 26.35 26.30 26.25 26.20 26.15 26.10 15 25 35 45 55 SUPPLY VOLTAGE (V) www.maximintegrated.com 65 75 60 MAX16013/MAX16014 SET = GND, EN = VCC 50 40 VGATE 30 20 VCC - VGATE 10 26.05 26.00 5 MAX16013/MAX16014 SET = GND, EN = VCC GATE VOLTAGE vs. SUPPLY VOLTAGE MAX16010 toc03 26.45 GATE VOLTAGE (V) SUPPLY CURRENT (µA) 35 26.50 SUPPLY CURRENT vs. TEMPERATURE MAX16010 toc02 MAX16013/MAX16014 SET = GND, EN = VCC SUPPLY CURRENT (µA) 40 MAX16010 toc01 SUPPLY CURRENT vs. SUPPLY VOLTAGE -40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (°C) 0 5 15 25 35 45 55 65 75 SUPPLY VOLTAGE (V) Maxim Integrated │  3 MAX16010–MAX16014 Ultra-Small, Overvoltage Protection/ Detection Circuits Typical Operating Characteristics (continued) (VIN = 14V, TA = +25°C, unless otherwise noted.) 5.2 5.1 5.0 RISING 4.9 4.8 4.7 4.6 4.5 INA+/INB-/SET RISING EN = VCC 1.29 FALLING -40 -25 -10 5 20 35 50 65 80 95 110 125 1.28 10.0 MAX16010 toc05 1.30 1.27 1.26 1.25 1.24 1.23 9.8 9.7 9.6 9.5 9.4 9.3 9.2 1.21 9.1 -40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (°C) MAX16013/MAX16014 SET = GND, EN = VCC 9.9 1.22 1.20 GATE VOLTAGE vs. TEMPERATURE 9.0 -40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (°C) STARTUP WAVEFORM (ROUT = 100Ω, CIN = 10mF, COUT = 10nF) MAX16010 toc06 INA+/INB-/SET THRESHOLD vs. TEMPERATURE (VCC - VGATE) (V) UVLO THRESHOLD (V) 5.3 INA+/INB-/SET = GND EN = VCC INA+/INB-/SET THRESHOLD (V) 5.4 MAX16010 toc04 5.5 UVLO THRESHOLD vs. TEMPERATURE TEMPERATURE (°C) STARTUP WAVEFORM (ROUT = 100Ω, CIN = 10mF, COUT = 10nF) MAX16010 toc07 MAX16010 toc08 VCC 1V/div VCC 10V/div VGATE 10V/div VGATE 5V/div VOUT 10V/div VOUT 10V/div VEN = 0 TO 2V 200µs/div 20µs/div OVERVOLTAGE LIMIT (ROUT = 100Ω, CIN = 80mF, COUT = 10nF) OVERVOLTAGE SWITCH FAULT (ROUT = 100Ω, CIN = 80mF, COUT = 10nF) MAX16010 toc10 MAX16010 toc09 VCC 20V/div VCC 20V/div VGATE 20V/div VGATE 20V/div VOUT 20V/div VIN = 12V TO 40V, TRIP THRESHOLD = 28V 1ms/div www.maximintegrated.com VOUT 20V/div VIN = 12V TO 40V TRIP THRESHOLD = 28V 1ms/div Maxim Integrated │  4 MAX16010–MAX16014 Ultra-Small, Overvoltage Protection/ Detection Circuits Pin Description MAX16010 MAX16011 MAX16012 MAX16013/ MAX16014 PIN 1 1 1 1 VCC Positive-Supply Input Voltage. Connect VCC to a 5.5V to 72V supply. 2 2 2 2 GND Ground 3 — — — EN 4 4 — — 5 5 — — NAME FUNCTION Active-Low Enable Input. Drive EN low to turn on the voltage detectors. Drive EN high to force the OUTA and OUTB outputs low. EN is internally pulled up to VCC. Connect EN to GND if not used. Open-Drain Monitor B Output. Connect a pullup resistor from OUTB to VCC. OUTB goes low when INB- exceeds VTH+ and goes high when INB- drops below VTH- (with LOGIC connected to GND OUTB for the MAX16011). Drive LOGIC high to reverse OUTB’s logic state. OUTB is usually used as an overvoltage output. OUTB goes low (LOGIC = low) or high (LOGIC = high) when VCC drops below the UVLO threshold voltage. INB- EN Adjustable Voltage Monitor Threshold Input Active-High ENABLE Input. For the MAX16010/MAX16011, drive EN high to turn on the voltage detectors. Drive EN low to force OUTA low and OUTB low (LOGIC = low) or high (LOGIC = high). For the MAX16013/MAX16014, drive EN high to enhance the p-channel MOSFET (P2), and drive EN low to turn off the MOSFET. EN is internally pulled down to GND. Connect EN to VCC if not used. 6 6 — 5 7 7 — — Open-Drain Monitor A Output. Connect a pullup resistor from OUTA to VCC. OUTA goes low when OUTA INA+ drops below VTH- and goes high when INA+ exceeds VTH+. OUTA is usually used as an undervoltage output. OUTA also goes low when VCC drops below the UVLO threshold voltage. 8 8 — — INA+ — 3 — — LOGIC — — 3 — OUT — — 4 — IN- — — 5 — REF Internal 1.30V Reference Output. Connect REF to IN+ for active-low output. Connect REF to IN- for active-high output. REF can source and sink up to 1µA. Leave REF floating if not used. REF output is stable with capacitive loads from 0 to 50pF. — — 6 — IN+ Noninverting Comparator Input Adjustable Voltage Monitor Threshold Input OUTB Logic-Select Input. Connect LOGIC to GND or VCC to configure the OUTB logic. See the MAX16011 output logic table. Open-Drain Comparator Output. Connect a pullup resistor from OUT to VCC. OUT goes low when IN+ drops below IN-. OUT goes high when IN+ exceeds IN-. Inverting Comparator Input Gate-Driver Output. Connect GATE2 to the gate of an external p-channel MOSFET pass switch. GATE2 is driven low to the higher of VCC - 10V or GND during normal operations and quickly GATE2 shorted to VCC during an overvoltage condition (SET above the internal threshold). GATE2 is shorted to VCC when the supply voltage goes below the UVLO threshold voltage. GATE2 is shorted to VCC when EN is low. — — — 3 — — — 4 SET — — — 6 GATE1 — — — — EP www.maximintegrated.com Device Overvoltage-Threshold-Adjustment Input. Connect SET to an external resistive divider network to adjust the desired overvoltage disable or overvoltage limit threshold (see the Typical Application Circuit and Overvoltage Limiter section). Gate-Driver Output. Connect GATE1 to the gate of an external p-channel MOSFET to provide low drop reverse voltage protection. Exposed Pad. Connect EP to GND. Maxim Integrated │  5 MAX16010–MAX16014 Ultra-Small, Overvoltage Protection/ Detection Circuits Voltage Monitoring +48V R1 EN VCC INA+ R2 OUTA OUTB EN IN DC-DC REGULATOR MAX16010 INB- R3 GND EN The MAX16010/MAX16011 include undervoltage and overvoltage comparators for window detection (see Figure 1). OUT_ asserts high when the monitored voltage is within the selected “window.” OUTA asserts low when the monitored voltage falls below the lower (VTRIPLOW) limit of the window, or OUTB asserts low if the monitored voltage exceeds the upper limit (VTRIPHIGH). The application in Figure 1 shows OUT_ enabling the DC-DC converter when the monitored voltage is in the selected window. The resistor values (R1–R3) can be calculated as follows: R  V TRIPLOW = VTH−  TOTAL  + R2 R3   Figure 1. MAX16010 Monitor Circuit Detailed Description The MAX16010–MAX16014 is a family of ultra-small, low-power, overvoltage-protection circuits for highvoltage, high-transient systems such as those found in automotive, telecom, and industrial applications. These devices operate over a wide 5.5V to 72V supply voltage range, making them also suitable for other applications such as battery stacks, notebook computers, and servers. The MAX16010 and MAX16011 offer two independent comparators for monitoring both undervoltage and overvoltage conditions. These comparators offer open-drain outputs capable of handling voltages up to 72V. The MAX16010 features complementary enable inputs (EN/ EN), while the MAX16011 features an active-high enable input and a selectable active-high/low OUTB output. The MAX16012 offers a single comparator and an independent reference output. The reference output can be directly connected to either the inverting or noninverting input to select the comparator output logic. The MAX16013 and MAX16014 are overvoltageprotection circuits capable of driving two p-channel MOSFETs to prevent reverse-battery and overvoltage conditions. One MOSFET (P1) eliminates the need for external diodes, thus minimizing the input voltage drop. While the second MOSFET (P2) isolates the load or regulates the output voltage during an overvoltage condition. The MAX16014 keeps the MOSFET (P2) latched off until the input power is cycled. www.maximintegrated.com R  VTRIPHIGH = VTH+  TOTAL   R3  where RTOTAL = R1 + R2 + R3. Use the following steps to determine the values for R1–R3. 1) Choose a value for RTOTAL, the sum of R1, R2, and R3. Because the MAX16010/MAX16011 have very high input impedance, RTOTAL can be up to 5MΩ. 2) Calculate R3 based on RTOTAL and the desired upper trip point: R3 = V TH+ × R TOTAL V TRIPHIGH 3) Calculate R2 based on RTOTAL, R3, and the desired lower trip point: R3 = V TH+ × R TOTAL V TRIPHIGH 4) Calculate R1 based on RTOTAL, R3, and R2: R1 = RTOTAL - R2 - R3 The MAX16012 has both inputs of the comparator available with an integrated 1.30V reference (REF). When the voltage at IN+ is greater than the voltage at IN-, OUT goes high. When the voltage at IN- is greater than the voltage at IN+, OUT goes low. Connect REF to IN+ or IN- to set the reference-voltage value. Use an external resistive divider to set the monitored voltage threshold. Maxim Integrated │  6 MAX16010–MAX16014 Ultra-Small, Overvoltage Protection/ Detection Circuits VBATT P1 VBATT VCC R1 P2 RPULLUP IN+ VCC GATE1 R2 REF MAX16012 GATE2 OUT OUT R1 MAX16013 SET IN- R2 GND GND Figure 2. Typical Operating Circuit for the MAX16012 Figure 3. Overvoltage Limiter Protection The MAX16013/MAX16014 can be configured as an overvoltage switch controller to turn on/off a load (see the Typical Application Circuit). When the programmed overvoltage threshold is tripped, the internal fast comparator turns off the external p-channel MOSFET (P2), pulling GATE2 to VCC to disconnect the power source from the load. When the monitored voltage goes below the adjusted overvoltage threshold, the MAX16013 enhances GATE2, reconnecting the load to the power source (toggle ENABLE on the MAX16014 to reconnect the load). The MAX16013 can be configured as an overvoltage-limiter switch by connecting the resistive divider to the load instead of VCC (Figure 3). See the Overvoltage Limiter section. Hysteresis Supply Voltage Connect a 5.5V to 72V supply to VCC for proper operation. For noisy environments, bypass VCC to GND with a 0.1μF or greater capacitor. When VCC falls below the UVLO voltage, the following states are present (Table 1). Hysteresis adds noise immunity to the voltage monitors and prevents oscillation due to repeated triggering when the monitored voltage is near the threshold trip voltage. The hysteresis in a comparator creates two trip points: one for the rising input voltage (VTH+) and one for the falling input voltage (VTH-). These thresholds are shown in Figure 4. Enable Inputs (EN or EN) The MAX16011 offers an active-high enable input (EN), while the MAX16010 offers both an active-high enable input (EN) and an active-low enable input (EN). For the MAX16010, drive EN low or EN high to force the output low. When the device is enabled (EN = high and EN = low) the state of OUTA and OUTB depends on the INA+ and INB- logic states. VHYST Table 1. UVLO State (VCC < VUVLO) PART OUTA MAX16010 Low MAX16011 Low MAX16012 — MAX16013 MAX16014 — OUTB VIN+ OUT GATE2 Low — — Low, LOGIC = low High, LOGIC = high — — — Low — — — High www.maximintegrated.com VTH+ VTHVCC VOUT tPROP tPROP tPROP 0V Figure 4. Input and Output Waveforms Maxim Integrated │  7 MAX16010–MAX16014 Ultra-Small, Overvoltage Protection/ Detection Circuits Table 2. MAX16011 Output Logic LOGIC INA+ INB- OUTA OUTB Low > VTH+ > VTH+ High Impedance Low Low < VTH- < VTH- Low High Impedance High > VTH+ > VTH+ High Impedance High Impedance High < VTH- < VTH- Low Low For the MAX16011, drive EN low to force OUTA low, OUTB low when LOGIC = low, and OUTB high when LOGIC = high. When the device is enabled (EN = high), the state of OUTA and OUTB depends on the INA+, INB-, and LOGIC input (see Table 2). For the MAX16013/MAX16014, drive EN low to pull GATE2 to VCC, turning off the p-channel MOSFET (P2). When the device is enabled (EN = high), GATE2 is pulled to the greater of (VCC - 10V) or GND turning on the external MOSFET (P2). Applications Information Input Transients Clamping When the external MOSFET is turned off during an overvoltage occurrence, stray inductance in the power path may cause voltage ringing to exceed the MAX16013/ MAX16014 absolute maximum input (VCC) supply rating. The following techniques are recommended to reduce the effect of transients: ● Minimize stray inductance in the power path using wide traces, and minimize loop area including the power traces and the return ground path. ● Add a zener diode or transient voltage suppresser (TVS) rated below VCC absolute maximum rating (Figure 3). Overvoltage Limiter When operating in overvoltage-limiter mode, the MAX16013 drives the external p-channel MOSFET (P2), resulting in the external MOSFET operating as a voltage regulator. During normal operation, GATE2 is pulled to the greater of (VCC - 10V) or GND. The external MOSFET’s drain voltage is monitored through a resistor-divider between the P2 output and SET. When the output voltage rises above the adjusted overvoltage threshold, an internal comparator pulls GATE2 to VCC. When the monitored www.maximintegrated.com voltage goes below the overvoltage threshold, the p-channel MOSFET (P2) is turned on again. This process continues to keep the voltage at the output regulated to within approximately a 5% window. The output voltage is regulated during the overvoltage transients and the MOSFET (P2) continues to conduct during the overvoltage event, operating in switched-linear mode. Caution must be exercised when operating the MAX16013 in voltage-limiting mode for long durations due to the MOSFET’s power-dissipation consideration (see the MOSFET Selection and Operation section). MOSFET Selection and Operation (MAX16013 and MAX16014) Most battery-powered applications must include reversevoltage protection. Many times this is implemented with a diode in series with the battery. The disadvantage in using a diode is the forward-voltage drop of the diode, which reduces the operating voltage available to downstream circuits (VLOAD = VBATTERY - VDIODE). The MAX16013 and MAX16014 include high-voltage GATE1 drive circuitry, allowing users to replace the high-voltage-drop series diode with a low-voltage-drop MOSFET device (as shown in the Typical Operating Circuit and Figure 3). The forward-voltage drop is reduced to ILOAD x RDS-ON of P1. With a suitably chosen MOSFET, the voltage drop can be reduced to millivolts. In normal operating mode, internal GATE1 output circuitry enhances P1 to a 10V gate-to-source (VGS) for 11V < VCC < 72V. The constant 10V enhancement ensures P1 operates in a low RDS-ON mode, but the gate-source junction is not overstressed during high-battery-voltage applications or transients (many MOSFET devices specify a ±20V VGS absolute maximum). As VCC drops below 10V, GATE1 is limited to GND, reducing P1 VGS to VCC - GND. In normal operation, the P1 power dissipation is very low: P1 = ILOAD2 x RDS-ON During reverse-battery applications, GATE1 is limited to GND and the P1 gate-source junction is reverse biased. P1 is turned off and neither the MAX16013/MAX16014 nor the load circuitry is exposed to the reverse-battery voltage. Care should be taken to place P1 (and its internal drain-to-source diode) in the correct orientation for proper reverse-battery operation. P2 protects the load from input overvoltage conditions. During normal operating modes (the monitored voltage is below the adjusted overvoltage threshold), internal Maxim Integrated │  8 MAX16010–MAX16014 GATE2 output circuitry enhances P2 to a 10V gate-tosource (VGS) for 11V < VCC < 72V. The constant 10V enhancement ensures P2 operates in a low RDS-ON mode, but the gate-to-source junction is not overstressed during high-battery-voltage applications (many pFET devices specify a ±20V VGS absolute maximum). As VCC drops below 10V, GATE2 is limited to GND, reducing P2 VGS to VCC - GND. In normal operation, the P2 power dissipation is very low: P2 = ILOAD2 x RDS-ON During overvoltage conditions, P2 is either turned completely off (overvoltage-switch mode) or cycled off-on-off (voltage-limiter mode). Care should be taken to place P2 (and its internal drain-to-source diode) in the correct orientation for proper overvoltage-protection operation. During voltage-limiter mode, the drain of P2 is limited to the adjusted overvoltage threshold, while the battery (VCC) voltage rises. During prolonged overvoltage events, P2 temperature can increase rapidly due to the high power dissipation. The power dissipated by P2 is: Ultra-Small, Overvoltage Protection/ Detection Circuits Adding External Pullup Resistors It may be necessary to add an external resistor from VCC to GATE1 to provide enough additional pullup capability when the GATE1 input goes high. The GATE_ output can only source up to 1μA current. If the source current is less than 1μA, no external resistor may be necessary. However, to improve the pullup capability of the GATE_ output when it goes high, connect an external resistor between VCC and the GATE_. The application shows a 2MΩ resistor, which is large enough not to impact the sinking capability of the GATE_ (during normal operation), while providing enough pullup during an overvoltage event. With an 11V (worst case) VCC-to-gate clamp voltage and a sinking current of 75μA, the smallest resistor should be 11V/75μA, or about 147kΩ. However, since the GATE_ is typically low most of the time, a higher value should be used to reduce overall power consumption. P2 = VDS-P2 x ILOAD = (VCC - VOV-ADJUSTED) x ILOAD where VCC ~ VBATTERY and VOV-ADJUSTED is the desired load-limit voltage. For prolonged overvoltage events with high P2 power dissipation, proper heatsinking is required. www.maximintegrated.com Maxim Integrated │  9 MAX16010–MAX16014 Ultra-Small, Overvoltage Protection/ Detection Circuits Functional Diagrams VCC REGULATOR VCC ~4V REGULATOR MAX16010 OUTA INA+ ~4V MAX16011 OUTA INA+ HYST HYST OUTB INB- OUTB INB- HYST HYST 1.23V 1.23V GND ENABLE CIRCUITRY EN ENABLE CIRCUITRY GND EN Figure 5. MAX16010 Functional Diagram LOGIC EN Figure 6. MAX16011 Functional Diagram VCC VCC REGULATOR OUTB LOGIC ~4V SET MAX16012 GATE2 OUT IN- HYST 1.23V IN+ REF GATE1 1.30V MAX16013 MAX16014 ENABLE CIRCUITRY GND Figure 7. MAX16012 Functional Diagram www.maximintegrated.com GND LATCH CLEAR EN Figure 8. MAX16013/MAX16014 Functional Diagram Maxim Integrated │  10 MAX16010–MAX16014 Ultra-Small, Overvoltage Protection/ Detection Circuits Pin Configurations TOP VIEW INA+ OUTA EN INB- INA+ OUTA EN INB- 8 7 6 5 8 7 6 5 MAX16010 MAX16011 1 2 3 4 1 VCC GND EN OUTB VCC TDFN (3mm x 3mm) www.maximintegrated.com 4 IN+ REF IN- GATE1 EN SET 6 5 4 6 5 4 MAX16013 MAX16014 1 2 3 1 2 3 VCC GND OUT VCC GND GATE2 TDFN (3mm x 3mm) PROCESS: BiCMOS 3 TDFN (3mm x 3mm) MAX16012 Chip Information 2 GND LOGIC OUTB TDFN (3mm x 3mm) 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 DOCUMENT NO. 6 TDFN T633-2 21-0137 8 TDFN T833-2 21-0137 Maxim Integrated │  11 MAX16010–MAX16014 Ultra-Small, Overvoltage Protection/ Detection Circuits Revision History REVISION NUMBER REVISION DATE 0 6/05 Initial release 1 12/05 Removed future product designation for MAX16010/MAX16011 2 1/07 Edited Figure 7 3 12/07 Fixed text in Voltage Monitoring section and updated Package Outline 4 9/08 Revised Figures 6 and 8. 10 2/15 No /V OPNs in Ordering Information; deleted automotive reference from General Description and Applications sections; deleted Load Dump section 1, 8 5 PAGES CHANGED DESCRIPTION — 1, 12 1, 10, 12 6, 12 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. 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 and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2015 Maxim Integrated Products, Inc. │  12
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