MAX14562EXT+T

19-5570; Rev 1; 8/11 36V-Capable Overvoltage Protector with Regulated Output Voltage Features The MAX14562 protects valuable consumer circuits against voltage faults of up to +36V. This robust protection is implemented in a three-step scheme for a superior result. If the input is below the preset regulated outputvoltage (VPROV) threshold, the output tracks the input minus the voltage drop (RON x ILOAD) across the pass FET. If the input exceeds VPROV, the output is regulated to VPROV. If the input rises further and exceeds the overvoltage lockout cutoff threshold (VOVLO), the output is disconnected from the input. S Input Voltage Protection Up to +36V S Preset Regulated Output Voltage (+5.15V typ) S Integrated 160mI (typ) N-Channel MOSFET Switch S Soft-Start to Minimize In-Rush Current S Overvoltage Cutoff Protection +8V (typ) S Thermal Shutdown Protection S -40NC to +85NC Operating Temperature Range A low resistance 160mI (typ) FET is integrated in the MAX14562, effectively reducing the component count and application footprint. The MAX14562 also features thermal shutdown protection against a short-circuit event. Ordering Information The MAX14562 is specified over the extended -40NC to +85NC temperature range and is available in 8-pin TDFN (2mm x 2mm) package. Digital Cameras Smartphones Bluetooth Headset Portable Media Player E-Book PDAs Mobile Internet Device TEMP RANGE PINPACKAGE TOP MARK MAX14562ETA+T -40NC to +85NC 8 TDFN-EP* ADI +Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel. *EP = Exposed pad. Applications Mobile Phones PART Typical Operating Circuit VBUS TRAVEL ADAPTER INPUT 1µF * IN OUT IN OUT MAX14562 CHARGER INPUT VBUS VIO GND SYSTEM LOAD PMIC 1µF * CHARGER OUTPUT 10kΩ APIC WITH HS USB ACOK GND EN *ONLY TDFN. ________________________________________________________________ Maxim Integrated Products   1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. MAX14562 General Description MAX14562 36V-Capable Overvoltage Protector with Regulated Output Voltage ABSOLUTE MAXIMUM RATINGS Continuous Power Dissipation (TA = +70oC): 8-Pin TDFN (derate 11.9mW/NC above +70NC) . .........953mW Operating Temperature Range . ........................ -40NC to +85NC Storage Temperature Range ........................... -65NC to +150NC Junction Temperature......................................................+150NC Lead Temperature (soldering, 10s) ................................+300NC Soldering Temperature (reflow) ......................................+260NC (Voltages referenced to GND.) IN . ......................................................................... -0.3V to +40V OUT......................................................................... -0.3V to +6V EN, ACOK............................................................... -0.3V to +6V Continuous Current Through IN/OUT 8-Pin TDFN..................................................................... Q1.6A 10ms Current Through IN/OUT 8-Pin TDFN........................................................................ Q2A 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. PACKAGE THERMAL CHARACTERISTICS (Note 1) TDFN Junction-to-Ambient Thermal Resistance (BJA)....... 83.9NC/W Junction-to-Case Thermal Resistance (BJC)............... 37NC/W Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a fourlayer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial. ELECTRICAL CHARACTERISTICS (VIN = +2.2V to +36V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at VIN = +5.0V and TA = +25NC.) (Note 2) PARAMETER Input Voltage Preset Regulated Output Voltage SYMBOL CONDITIONS VPROV 4.75 5.15 5.45 IOUT = 800mA, VIN = 6V (Note 3) 4.75 5.15 5.45 VOVLO IN rising VIN > VPROV VIN < VPROV (Note 4) Overvoltage Lockout Hysteresis % of typ VOVLO Input Supply Current EN = low, VIN = 4.5V, IOUT = 0mA EN = low, VIN = 7V, IOUT = 0mA IIN_Q EN = high, VIN = 3V RON VIN = 5V, VOUT = 4V, EN = high VIN = 4.75V, IOUT = 100mA LDO Load Capacitance VIH EN Input Low Voltage VIL EN Input Leakage Current ILEAK ACOK Output Low Voltage VOL ACOK Leakage Current 2 7.44 V VIN V 8 8.56 260 300 550 2.5 -1 VIO = 3.3V, ISINK = 1mA (see Typical Operating Circuit) VIO = 3.3V, ACOK deasserted (see Typical Operating Circuit) -200 FA 5 FA +1 FA 280 mI 10 -150 V % 120 FF 1.4 VEN = 0V or 5.5V V VPROV 1 IOUT up to 0.8A DIGITAL SIGNALS (EN, ACOK) EN Input High Voltage V 5.45 Overvoltage Lockout Cutoff Threshold Rising On-Resistance UNITS 36 5.15 IOUT = 0mA OUT Shutdown Current MAX 4.85 VOUT Input Shutdown Current TYP IOUT = 0mA, VIN = 6.5V IOUT = 200mA, VIN = 6.5V Output Voltage IIN MIN 2.2 VIN V 0.4 V +150 nA 0.4 V +200 nA 36V-Capable Overvoltage Protector with Regulated Output Voltage MAX14562 ELECTRICAL CHARACTERISTICS (continued) (VIN = +2.2V to +36V, TA = -40NC to +85NC, unless otherwise noted. Typical values are at VIN = +5.0V and TA = +25NC.) (Note 2) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS tDEB VIN_MIN < VIN < VOVLO until charge pump turns on, see Figure 1 10 20 35 ms tACOK VIN_MIN < VIN < VOVLO to ACOK low until charge pump turns on, see Figure 1 20 40 70 ms TIMING CHARACTERISTICS (Note 4) Input Debounce Time ACOK Time Turn-on Time During Soft-Start tON RLOAD = 100I, CLOAD = 1FF, VOUT = 20% of VIN to 80% of VIN, see Figure 1 48 Fs Overvoltage Turn-Off Time tOFF VIN > VOVLO to VOUT = 80% of VPROV, RLOAD = 100I, see Figure 1 1 Fs THERMAL PROTECTION Thermal Shutdown TSHDN 150 NC Thermal Hysteresis THYST 20 NC Note 2: All devices are 100% production tested at TA = +25NC. Limits over the operating temperature range are guaranteed by design and not production tested. Note 3: Thermally limited, guaranteed by design, and not production tested. Note 4: In linear mode, as IOUT increases, the OUT voltage drops due to a voltage across Q1 (see Functional Diagram). Note 5: All timing characteristics are measured using 20% and 80% levels unless otherwise specified. tOFF tDEB VOVLO VPROV IN MIN tDEB tDEB VPROV OUT tON tON IOUT EN tACOK tACOK tDEB ACOK Figure 1. Enable/Select Time 3 Typical Operating Characteristics (CIN = 1µF, COUT = 4.7µF, TA = +25°C, unless otherwise noted.) 200 150 100 160 140 120 100 VIN = 5V 80 60 40 50 20 20 30 -15 -40 NORMALIZED ON-RESISTANCE vs. TEMPERATURE 5.20 MAX14562 toc04 1.0 0.9 0.8 0.6 85 VIN = 3V 0.9 0.8 10 35 60 VIN = 6V IOUT = 100mA 5.16 5.14 10 35 60 3 2 85 0 10 1.10 20 IN VOLTAGE (V) VOVLO vs. TEMPERATURE 7.95 VOVLO (V) 1.05 1.00 MAX14562 toc08 VIN = 5V IOUT = 100mA 7.90 0.95 0.90 7.85 0.85 0.80 7.80 -40 -15 10 35 TEMPERATURE (°C) 4 5.5 4 8.00 MAX14562 toc07 NORMALIZED DEBOUNCE TIME IOUT = 100mA 5 TEMPERATURE (°C) NORMALIZED DEBOUNCE TIME vs. TEMPERATURE 1.15 5.0 0 -15 TEMPERATURE (°C) 1.20 4.5 1 -40 85 4.0 OUT VOLTAGE vs. IN VOLTAGE 5.10 0.6 3.5 6 5.12 VIN = 4.2V -15 3.0 SUPPLY VOLTAGE (V) 5.18 VPROV (V) 1.1 -40 2.5 2.0 OUT VOLTAGE (V) 1.2 0.7 60 1.1 VPROV vs. TEMPERATURE IOUT = 100mA EACH VIN CURVE IS NORMALIZED INDEPENDENTLY AT 25°C 1.0 35 1.2 TEMPERATURE (°C) IN VOLTAGE (V) 1.3 10 1.3 0.7 VIN = 2.2V 40 1.4 MAX14562 toc05 10 0 IOUT = 100mA LDO ABOVE 5.15V 1.5 0 0 1.4 1.6 MAX14562 toc03 MAX14562 toc02 VEN = 0V 180 NORMALIZED ON-RESISTANCE IN SUPPLY CURRENT (µA) 250 200 IN SUPPLY CURRENT (µA) VEN = 0V MAX14562 toc01 300 NORMALIZED ON-RESISTANCE vs. SUPPLY VOLTAGE IN SUPPLY CURRENT vs. TEMPERATURE MAX14562 toc06 IN SUPPLY CURRENT vs. IN VOLTAGE NORMALIZED ON-RESISTANCE MAX14562 36V-Capable Overvoltage Protector with Regulated Output Voltage 60 85 -40 -15 10 35 TEMPERATURE (°C) 60 85 30 40 36V-Capable Overvoltage Protector with Regulated Output Voltage IN RISE TRANSIENT RESPONSE (IOUT = 10mA) IN FALL TRANSIENT RESPONSE (IOUT = 10mA) MAX14562 toc09 MAX14562 toc10 IN 5V/div 6V 4V IN 5V/div OUT 5V/div VPROV 4V OUT 5V/div 0V EN 5V/div 0V EN 5V/div 0V ACOK 5V/div 0V ACOK 5V/div 6V 4V VPROV 4V 250µs/div 250µs/div LOAD TRANSIENT (VEN = 0V) LOAD TRANSIENT (VEN = 0V) MAX14562 toc11 MAX14562 toc12 5V IN 5V/div 5V IN 5V/div 5V OUT 5V/div 5V OUT 5V/div ACOK 5V/div 0V 800mA IOUT 500mA/div 10mA 200ns/div SWITCH TURN-ON TIME RESPONSE (RLOAD = 100Ω) SWITCH TURN-OFF TIME RESPONSE (RLOAD = 100Ω) MAX14562 toc13 0V 5V 0V 3.3V 0V 10ms/div IOUT 500mA/div 10mA 200ns/div 5V ACOK 5V/div 0V 800mA MAX14562 toc14 IN 5V/div 5V OUT 5V/div 5V ACOK 5V/div 3.3V IN 5V/div 0V OUT 5V/div 0V ACOK 5V/div 0V 2ms/div 5 MAX14562 Typical Operating Characteristics (continued) (CIN = 1µF, COUT = 4.7µF, TA = +25°C, unless otherwise noted.) MAX14562 36V-Capable Overvoltage Protector with Regulated Output Voltage Typical Operating Characteristics (continued) (CIN = 1µF, COUT = 4.7µF, TA = +25°C, unless otherwise noted.) POWER-UP RESPONSE (CLOAD = 470µF) POWER-UP RESPONSE (CLOAD = 470µF) MAX14562 toc15 5V MAX14562 toc16 IN 5V/div 0V 5V OUT 5V/div 0V 5V IN 5V/div 3V 0V EN 5V/div 5V OUT 5V/div 0V 3.3V 0V ACOK 5V/div 3.3V 0V ACOK 5V/div 10ms/div 10ms/div ACOK RESPONSE (OVERVOLTAGE CONDITION) (RLOAD = 50Ω) OUT SHORT SHUTDOWN (THERMAL) MAX14562 toc17 12V IN 5V/div 6V IN 5V/div IOUT 1A/div 0A 5V 5V OUT 5V/div 0V 3V 0V 100mA ACOK 5V/div IOUT 100mA/div 0A 10ms/div 6 MAX14562 toc18 6V 2.5A OUT 2V/div 0V ACOK 5V/div 3V 0V 20ms/div 36V-Capable Overvoltage Protector with Regulated Output Voltage TOP VIEW OUT OUT 8 7 ACOK GND 6 5 MAX14562 *EP + 1 2 3 4 IN IN EN N.C. TDFN (2mm × 2mm) *CONNECT EXPOSED PAD TO GND. Pin Description PIN NAME 1,2 IN FUNCTION Overvoltage Protection Input. Bypass IN with a 1FF ceramic capacitor to get Q15kV HBM ESD protection. No capacitor is required for ±2kV HBM ESD protection. Externally connect both IN pins together. 3 EN 4 N.C. No Connection. Not internally connected. 5 GND Ground 6 ACOK Open-Drain Flag Output. ACOK is driven low after input voltage is stable between minimum VIN and VOVLO after soft-start time (double of debounce time). Connect a pullup resistor from ACOK to the logic I/O voltage of the host system. 7,8 OUT Overvoltage Protection Output. Bypass OUT with a 1FF or larger ceramic capacitor (see Table 1). Externally connect both OUT pins together. — EP Active-Low Enable Input. Drive EN low to turn on the device. Drive EN high to turn off the device. Exposed Pad. Connect EP to GND. 7 MAX14562 Pin Configuration 36V-Capable Overvoltage Protector with Regulated Output Voltage MAX14562 Functional Diagram Q1 IN OUT PROV CONTROL OVLO CONTROL HV CP PROTECTION MAX14562 BG POK ACOK INOVLO VBG TIMING AND CONTROL LOGIC Detailed Description The MAX14562 features the overvoltage protection to the charger input VBUS line when a travel adapter (TA) is used. In addition, the MAX14562 features a low 160mI (typ) on-resistance internal FET (Q1) and protects the low-voltage system against voltage faults up to +36V. The MAX14562 features three-step overvoltage protection. When the input is below the preset regulated output-voltage (VPROV) threshold, the output follows the input minus the voltage drop across the pass FET (RON x ILOAD). When the input exceeds VPROV, the output is regulated to VPROV. If the input rises further and exceeds the overvoltage lockout cutoff (VOVLO) threshold, the output is disconnected from the input. The MAX14562 also features thermal shutdown protection against short-circuit events. Soft-Start EN OK EN starts charging) and ends when ACOK is asserted low, 15ms (typ). Linear Mode When the input voltage exceeds the minimum IN voltage but is below VPROV, OUT follows IN with a minimum voltage drop (RON x ILOAD) across pass FET after the debounce time, tDEB, and ACOK is asserted. The LDO mode needs a capacitor on OUT. The recommended value is 10FF for load currents up to 800mA (Table 1). Preset Regulated Output-Voltage Mode (PROV) When IN goes above the preset regulated output voltage (VPROV), Q1 provides a constant voltage of VPROV at OUT, and ACOK is asserted. Table 1. Recommended Load Capacitance To minimize inrush current, the MAX14562 features a soft-start capability to slowly turn on Q1. LOAD CURRENT (mA) Soft-start function permits the device to charge the load capacitor up to 1000FF by controlled current. The softstart is initiated when the debounce time ends (OUT 10 1 50 2.2 100 4.7 800 10 8 LOAD CAP (µF) 36V-Capable Overvoltage Protector with Regulated Output Voltage Thermal Shutdown The MAX14562 features a thermal shutdown function necessary to protect the device. The device turns off and ACOK is deasserted when the junction temperature exceeds +150NC (typ). When the temperature drops 20NC (typ) below 150NC (typ), the device turns back on and Q1 is turned on after the debounce time. Power-Supply Decoupling Bypass IN pin(s) to ground with a 1FF or larger ceramic capacitor placed as close as possible to the device. Chip Information PROCESS: BiCMOS Package Information For the latest package outline information and land patterns, go to www.maxim-ic.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 OUTPUT NO. LAND PATTERN NO. 8 TDFN-EP T822+1 21-0168 90-0064 9 MAX14562 Applications Information Overvoltage Lockout Mode (OVLO) When IN goes above the overvoltage lockout threshold (VOVLO), OUT is disconnected from IN and ACOK is deasserted. Power dissipation increases when the input goes higher than VPROV. The overvoltage lockout threshold is set to further the power dissipation. When IN drops below VOVLO, the debounce time starts counting. After the debounce time (2 x tDEB), OUT follows IN again and ACOK is asserted. MAX14562 36V-Capable Overvoltage Protector with Regulated Output Voltage Revision History REVISION NUMBER REVISION DATE 0 9/10 Initial release 1 8/11 Removed SC70 pin information from data sheet. Added additional conditions to Preset Regulated Output Voltage parameter in the Electrical Characteristics table DESCRIPTION PAGES CHANGED — 1, 2, 3, 7, 9 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. 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. 10 ©  2011 Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.