MAX14530E

19-4459; Rev 0; 2/09 Overvoltage Protection with USB Charger Detection, LDO, and ESD Protection on D+/DGeneral Description The MAX14529E/MAX14530E are overvoltage-protection devices with USB charger detection, a low-dropout (LDO) regulator, and ESD protection. These devices feature a low 35mΩ (typ) RON internal FET switch and protect low-voltage systems against voltage faults up to 28V. When the input voltage exceeds the overvoltage threshold, the internal FET switch is turned off to prevent damage to the protected components. The charger detection detects a short between the USB D+ and D- data lines. If the data lines are shorted together and a dedicated charger is attached, the phone draws more than 500mA to charge the battery. The overvoltage thresholds (OVLO) are preset to 5.75V (MAX14529E) or 6.8V (MAX14530E). The LDO output (LOUT) is powered from OUT and supplies 3.3V to the USB transceiver. The LDO features a 100mA (min) current capability and low output noise. The MAX14529E/MAX14530E feature ±15kV HBM ESD protection with low (3pF) capacitance suitable for Hi-Speed USB 2.0. Both devices are offered in a small 12-bump, 1.5mm x 2mm WLP package and operate over the -40°C to +85°C extended temperature range. PART Features ♦ Input Voltage Protection Up to 28V ♦ High-Current USB Charger Detection ♦ 3.3V, 100mA LDO ♦ Preset Overvoltage Protection Trip Level 5.75V (MAX14529E) 6.8V (MAX14530E) ♦ Integrated Low RON 35mΩ (typ) FET Switch ♦ Low-Capacitance USB High-Speed Data Line ESD Protection (3pF) ±15kV Human Body Model (HBM) ±15kV IEC 61000-4-2 Air Gap ±8kV IEC 61000-4-2 Contact ♦ Thermal-Shutdown Protection ♦ 12-Bump, 1.5mm x 2mm WLP Package ♦ -40°C to +85°C Operating Temperature Range MAX14529E/MAX14530E Ordering Information/ Selector Guide PINPACKAGE TOP MARK AAP AAQ OVLO (V) 5.75 6.8 MAX14529EEWC+T 12 WLP MAX14530EEWC+T 12 WLP Applications Cell Phones MP3 Players PDAs and Palmtop Devices Note: Both devices are specified over the -40°C to +85°C operating temperature range. +Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape and reel. Typical Operating Circuit PHONE LOAD Pin Configuration TOP VIEW (BUMPS ON BOTTOM) 1 IN VBUS USB CONNECTOR DD+ IN D+ D- OUT OUT CHARGER 0.1μF 2 3 4 + MAX14529E/ MAX14530E 10kΩ VOK CDET OEN LEN GND LOUT 1μF VCC 1.5kΩ VPU USB 2.0 D+ TRANSCEIVER DMICROPROCESSOR VIO VIO MAX14529E/MAX14530E A 10kΩ IN B OEN C OUT IN VOK D- LEN CDET GND OUT LOUT D+ WLP 1.5mm x 2mm ________________________________________________________________ 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. Overvoltage Protection with USB Charger Detection, LDO, and ESD Protection on D+/DMAX14529E/MAX14530E ABSOLUTE MAXIMUM RATINGS IN to GND ...............................................................-0.3V to +30V OUT to GND .................................-0.3V to min (+12V, IN + 0.3V) OEN, LEN, VOK, CDET to GND ...............................-0.3V to +6V LOUT to GND ...........................................................-0.3V to +6V Continuous Current IN to OUT per Ball...............................1.74A Continuous Power Dissipation (TA = +70°C) 12-Bump WLP (derate 8.5mW/°C above +70°C).........678mW Junction-to-Ambient Thermal Resistance (θJA) (Note 1) ......................................................................118°C/W Operating Temperature Range ...........................-40°C to +85°C Junction Temperature .......................................-40°C to +150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C 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, go to www.maxim-ic.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 = 2.2V to 28V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VIN = +5V, TA = +25°C.) (Note 2) PARAMETER OVERVOLTAGE PROTECTION Input-Voltage Range VIN VIN rising Overvoltage Trip Level VOVLO VIN falling IN Overvoltage Lockout Hysteresis VOEN = 0, VLEN = 5V, 2.2V < VIN < VOVLO Supply Current Internal FET RON Maximum Capacitor on OUT LOW-DROPOUT REGULATOR LDO Output Voltage LOUT Line Regulation LOUT Load Regulation Current Limit Dropout Voltage LOUT Noise CDET FILTER Cutoff Frequency D- Rising DC Threshold D- Falling DC Threshold DIGITAL SIGNALS Open-Drain Output Low Voltage Open-Drain Leakage Current Input High Voltage VIH VOL ISINK = 1mA VOEN = VLEN = 5V, VOK and CDET high impedance 1.4 0.4 1 V µA V fFILT VTHFILT,R VTHFILT,F 2.375 0.6 2.5 2.35 2.625 kHz V V IOUT = 50mA (Note 3) f = 10kHz to 100kHz, IOUT = 1mA VLOUT VIN = 5V VIN = 4.2V to 6V IOUT = 0.1mA to 100mA 100 300 355 3.219 3.3 1.65 0.33 3.383 3.3 0.66 400 500 V mV/V mV/mA mA mV µVRMS IIN RON COUTMAX VOEN = VLEN = 0, 2.2V < VIN < VOVLO VOEN = VLEN = 5V, 2.2V < VIN < VOVLO ILOAD = 100mA, VIN = 4.5V to 5.5V MAX14529E MAX14530E MAX14529E MAX14530E 2.2 5.6 6.6 5.4 6.5 1 95 145 50 35 190 300 120 60 1000 mΩ µF µA % 5.75 6.8 28 5.9 6.94 V V SYMBOL CONDITIONS MIN TYP MAX UNITS 2 _______________________________________________________________________________________ Overvoltage Protection with USB Charger Detection, LDO, and ESD Protection on D+/DELECTRICAL CHARACTERISTICS (continued) (VIN = 2.2V to 28V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VIN = 5V, TA = +25°C.) (Note 2) PARAMETER Input Low Voltage Input Leakage Current TIMING CHARACTERISTICS (Figure 1) Debounce Time Switch Turn-On Time Switch Turn-Off Time THERMAL PROTECTION Thermal Shutdown Thermal Hysteresis ESD PROTECTION Human Body Model D+ and DIEC 61000-4-2 Air Gap IEC 61000-4-2 Contact ±15 ±15 ±8 kV Low to high 150 20 °C °C tINDBC tON tOFF 2.2V < VIN < VOVLO to VOUT = 10% of VIN 2.2V < VIN < VOVLO, RL = 100Ω, VOUT = 10% to 80% of VIN, CL = 1mF VIN > VOVLO to VOUT = 80% of VOVLO, RL = 10Ω 20 2 1.5 3.5 ms ms µs SYMBOL VIL VOEN = VLEN = 5V -1 CONDITIONS MIN TYP MAX 0.4 +1 UNITS V µA MAX14529E/MAX14530E Note 2: Devices are production tested at TA = +25°C. Specifications over temperature limits are guaranteed by design. Note 3: Dropout voltage is defined as VOUT - VLOUT when VLOUT is at VLOUT(min). Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) INPUT SUPPLY CURRENT vs. INPUT VOLTAGE MAX14529E/30E toc01 NORMALIZED RON vs. TEMPERATURE MAX14529E/30E toc02 NORMALIZED OVLO THRESHOLD vs. TEMPERATURE 1.04 NORMALIZED OVLO THRESHOLD 1.03 1.02 1.01 1.00 0.99 0.98 0.97 0.96 0.95 MAX14529E/30E toc03 70 60 50 40 30 20 10 0 0 5 10 15 TA = +85°C TA = +25°C MAX14529E VOEN = VLEN = 3V 1.5 1.4 1.3 NORMALIZED RON 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 VIN = 5V VIN = 3.6V 1.05 INPUT SUPPLY CURRENT (μA) TA = -40°C 20 25 30 -40 -15 10 35 60 85 -40 -15 10 35 60 85 INPUT VOLTAGE (V) TEMPERATURE (°C) TEMPERATURE (°C) _______________________________________________________________________________________ 3 Overvoltage Protection with USB Charger Detection, LDO, and ESD Protection on D+/DMAX14529E/MAX14530E Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) NORMALIZED LDO OUTPUT VOLTAGE vs. OUTPUT CURRENT MAX14529E/30E toc04 LDO OUTPUT DROPOUT VOLTAGE vs. LOAD CURRENT MAX14529E/30E toc05 LDO OUTPUT VOLTAGE vs. INPUT VOLTAGE 3.5 LDO OUTPUT VOLTAGE (V) 3.0 2.5 2.0 1.5 1.0 0.5 0 0 1 2 3 4 5 6 7 8 MAX14529E ILOAD = 0 MAX14529E/30E toc06 1.010 NORMALIZED LDO OUTPUT VOLTAGE (V) 1.005 1.000 0.995 0.990 0.985 0.980 0 1000 LDO OUTPUT DROPOUT VOLTAGE (mV) 900 800 700 600 500 400 300 200 100 0 0 TA = -40°C TA = +25°C TA = +85°C 4.0 10 20 30 40 50 60 70 80 90 100 OUTPUT CURRENT (mA) 10 20 30 40 50 60 70 80 90 100 LOAD CURRENT (mA) INPUT VOLTAGE (V) NORMALIZED DEBOUNCE TIME vs. TEMPERATURE 1.08 NORMALIZED DEBOUNCE TIME 1.06 1.04 1.02 1.00 0.98 0.96 0.94 0.92 0.90 -40 -15 10 35 60 85 MAX14529E/30E toc07 POWER-UP RESPONSE MAX14529E/30E toc08 OVERVOLTAGE FAULT RESPONSE MAX14529E/30E toc09 1.10 VIN 5V/div VIN 2V/div VOUT 5V/div VVOK 5V/div VOEN 1V/div 5ms/div 1μs/div VOUT 2V/div VVOK 5V/div TEMPERATURE (°C) CDET RESPONSE MAX14529E/30E toc10 D+/D- INPUT LEAKAGE CURRENT vs. TEMPERATURE MAX14529E/30E toc11 D+/D- INPUT VOLTAGE vs. INPUT CAPACITANCE MAX14529E/30E toc12 0.10 D+/D- INPUT LEAKAGE CURRENT (μA) 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 0 VD+ 2V/div VD2V/div 6 5 INPUT CAPACITANCE (pF) 4 3 2 1 0 VCDET 2V/div 100μs/div -40 -15 10 35 60 85 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.5 INPUT VOLTAGE (V) TEMPERATURE (°C) 4 _______________________________________________________________________________________ Overvoltage Protection with USB Charger Detection, LDO, and ESD Protection on D+/DPin Description PIN A1, A2 A3 A4 B1 B2 B3 B4 C1, C2 C3 C4 NAME IN VOK DOEN LEN CDET GND OUT LOUT D+ FUNCTION Overvoltage-Protection Input. Bypass IN with a 1µF ceramic capacitor as close as possible to the device to obtain ±15kV HBM ESD protection. No capacitor required to obtain ±2kV HBM ESD protection. Voltage Input Good Open-Drain Output. VOK is low impedance when OEN is driven low after the debounce time is expired (2.2V < VIN < VOVLO). USB Data Line with ESD Protection Overvoltage Protection Active-Low Enable Input. Drive OEN high to disconnect OUT from IN. Low-Dropout Active-Low Enable Input. Charger Detection Open-Drain Output. CDET is low if D+ and D- are shorted. Ground Overvoltage Switch Output. Bypass OUT with a 0.1µF ceramic capacitor as close as possible to the device. Low-Dropout Power Output. Bypass LOUT with a 1µF ceramic capacitor as close as possible to the device. USB Data Line with ESD Protection MAX14529E/MAX14530E OVLO tOFF IN tON 80% VIN 80% VOVLO OUT tINDBC 10% VIN tINDBC Figure 1. MAX14529E/MAX14530E Timing Diagram _______________________________________________________________________________________ 5 Overvoltage Protection with USB Charger Detection, LDO, and ESD Protection on D+/DMAX14529E/MAX14530E Detailed Description The MAX14529E/MAX14530E are overvoltage-protection devices with USB charger detection, a low-dropout (LDO) regulator, and ESD protection. These devices feature a low RON internal FET switch and protect lowvoltage systems against voltage faults up to 28V. When the input voltage exceeds the overvoltage threshold, the internal FET switch is turned off to prevent damage to the protected components. The 20ms debounce time prevents false turn-on of the internal FET switch during startup. Functional Diagram IN OUT CHARGE PUMP OEN VREF CONTROL LOGIC VOK 3.3V LDO D+ LEN LOUT CDET D- MAX14529E/ MAX14530E 6 _______________________________________________________________________________________ Overvoltage Protection with USB Charger Detection, LDO, and ESD Protection on D+/DDevice Operation The MAX14529E/MAX14530E have an internal oscillator and charge pump that control the turn-on of the internal FET switch. The internal oscillator controls the timers that enable the turn-on of the charge pump and controls the state of the open-drain VOK output. If VIN > VOVLO, the internal oscillator remains off, thus disabling the charge pump. If 2.2V < VIN < VOVLO, the internal charge pump is enabled. The charge-pump turns on the internal FET switch and asserts VOK. At any time, if VIN drops below 2.2V or rises above VOVLO, VOK goes high and the charge pump is disabled, disconnecting OUT from IN. inductance due to long lead length, take care to prevent overshoots due to the LC tank circuit and provide protection. MAX14529E/MAX14530E ESD Test Conditions ESD performance depends on a number of conditions. The MAX14529E/MAX14530E are specified for ±15kV HBM typical ESD protection on the D+, D-, and IN pins when IN is bypassed to ground with a 1µF ceramic capacitor. Human Body Model Figure 2 shows the Human Body Model, and Figure 3 shows the current waveform it generates when discharged into a low impedance. This model consists of a 100pF capacitor charged to the ESD voltage of interest that is then discharged into the device through a 1.5kΩ resistor. Overvoltage Lockout (OVLO) The MAX14529E has a 5.75V (typ) overvoltage threshold (OVLO), while the MAX14530E has a 6.8V (typ) OVLO. Low Dropout The low-dropout regulator (LOUT) is powered from input voltage and supplies 3.3V (typ) to the USB transceiver. If a lithium-ion (Li+) battery is used to power the USB transceiver, a boost converter is needed. The LDO features a minimum 100mA current capability and low output noise. Drive LEN high to disable the LDO. RC 1MΩ CHARGE-CURRENTLIMIT RESISTOR HIGHVOLTAGE DC SOURCE RD 1500Ω DISCHARGE RESISTANCE DEVICE UNDER TEST Charger Detection The charger detection detects if there is a short between the USB D+ and D- data lines. If the data lines are shorted together and a dedicated charger is attached, the phone draws more than 500mA to charge the battery; CDET asserts low. If the data lines are not biased properly, then an unidentified device is present and the phone draws no more than 500mA or does not charge at all, depending on its USB compliance level. Cs 100pF STORAGE CAPACITOR Figure 2. Human Body ESD Test Model Thermal-Shutdown Protection The MAX14529E/MAX14530E feature thermalshutdown circuitry. The internal switch turns off when the junction temperature exceeds +150°C (typ) and immediately goes into a fault mode. The device exits thermal shutdown after the junction temperature cools by 20°C (typ). IP 100% 90% AMPERES 36.8% 10% 0 0 tRL TIME tDL CURRENT WAVEFORM IR PEAK-TO-PEAK RINGING (NOT DRAWN TO SCALE) Applications Information IN Bypass Capacitor Bypass IN to GND with a 1µF ceramic capacitor as close as possible to the device for ±15kV HBM ESD protection on IN. No capacitor required to obtain ±2kV HBM protection. If the power source has significant Figure 3. Human Body Current Waveform _______________________________________________________________________________________ 7 Overvoltage Protection with USB Charger Detection, LDO, and ESD Protection on D+/DMAX14529E/MAX14530E IEC 61000-4-2 The IEC 61000-4-2 standard covers ESD testing and performance of finished equipment. It does not specifically refer to integrated circuits. The MAX14529E/ MAX14530E are specified for ±15kV Air-Gap Discharge and ±8kV Contact Discharge IEC 61000-4-2 on the D+ and D- pins. The main difference between tests done using the Human Body Model and IEC 61000-4-2 is higher peak current in IEC 61000-4-2. Because series resistance is lower in the IEC 61000-4-2 ESD test model (Figure 4), the ESD-withstand voltage measured to this standard is generally lower than that measured using the Human Body Model. Figure 5 shows the current waveform for the ±8kV IEC 61000-4-2 Level 4 ESD Contact Discharge test. The Air-Gap Discharge test involves approaching the device with a charged probe. The Contact Discharge method connects the probe to the device before the probe is energized. RC 50MΩ to 100MΩ CHARGE-CURRENTLIMIT RESISTOR HIGHVOLTAGE DC SOURCE RD 330Ω DISCHARGE RESISTANCE DEVICE UNDER TEST I 100% 90% IPEAK 10% tR = 0.7ns to 1ns 30ns 60ns t Cs 150pF STORAGE CAPACITOR Figure 4. IEC 61000-4-2 ESD Test Model Figure 5. IEC 61000-4-2 ESD Generator Current Waveform Chip Information PROCESS: BiCMOS 8 _______________________________________________________________________________________ Overvoltage Protection with USB Charger Detection, LDO, and ESD Protection on D+/DPackage Information For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. PACKAGE TYPE 12 WLP PACKAGE CODE W121B2+1 DOCUMENT NO. 21-0009 MAX14529E/MAX14530E 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 _____________________ 9 © 2009 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.