ETA6003数据手册(ETA6003).pdf-资料库

ETA6003 2.5A, 3MHz Switching Charger with Dynamic Power Path Management DESCRIPTION ETA6003 is a switching Li-Ion battery charger with dynamic power-path control and input current limiting. When a battery is connected, depending on the battery voltage, the DC-DC switching regulator either pre-conditions, fast-charges the battery or just regulates a system voltage (VSYS) to a preset voltage. It does not require an external sense resistor for current sensing. The charging current is determined by programming ISET1 or ISET2 pin, depending on the state of the USB_DET. If USB_DET is low, indicating a valid AC adapter input is present, the charge current is set by ISET1; otherwise, it is set by ISET2. When the battery voltage reaches the termination voltage i.e. 4.2V, the charging path disconnects SYS to BATT. The ETA6003 also includes a dynamic power path when the SYS load current exceeds current limit of the DCDC regulator internally set, the SYS voltage falls below VBATT, ETA6003 turns on the power-path to supplement the system load through the battery. FEATURES Switching Charger with Power Path Management Up to 95% DC-DC Efficiency 50mΩ Power Path MOSFET Up to 2.5A Max charging current Instant on with a dead Battery or no Battery No battery detection No External Sense resistor Programmable USB and AC IN Charging Current         TYPICAL APPLICATION APPLICATIONS    Tablet, MID Smart Phone Power Bank ORDERING INFORMATION PART ETA6003Q3Q QFN3X3-16 PACKAGE PIN TOP MARK ETA6003 - Product Number YWWPL - Date Code www.ETAsolution.com Outperform with Efficiency Proprietary Information DO NOT Distribute SYSSWPGNDINBATTNTCISET1ISET2USB_DETENBSYSSYSTEM LOAD2.2uH2.2K2KΩ 500Ω 5V INPUT22uF10uF1uFENPPB2A Switching Charger with Dynamic Power Path

ETA6003 PIN CONFIGURATION ABSOLUTEMAXIMUM RATINGS (Note: Exceeding these limits may damage the device. Exposure to absolute maximum rating conditions for long periods may affect device reliability.) IN, BATT Voltage ..........................................................–0.3V to 6V All Other Pin Voltage ..................................VIN–0.3V toVIN+0.3 SW,SYS,BATT to ground current……………...Internally limited Operating Temperature Range ……………….....…–40°C to 85°C Storage Temperature Range ……………………….–55°C to 150°C Thermal Resistance θJA QFN3X3-16……………………………………………………….50 ........C/W ELECTRICAL CHACRACTERISTICS (VIN = 5V, unless otherwise specified. Typical values are at TA = 25oC.) PARAMETER IN INPUT INPUT Range INPUT UVLO INPUT Operating Current BATT to INPUT leakage Current Vhold DC-DC and SYS OUTPUT VSYSMIN VSYSMAX Load Regulation CONDITIONS MIN TYP MAX UNITS 4.4 Rising, Hys=500mV Switcher Enable, Switching Switcher Enable, No Switching Input Floating When VIN drop to Vhold ， then reduce DC-DC current limit ISYS=1A, Default 3.9 5 70 0 4.5 3.6 4.5 40 5.5 5 V V mA μA μA V V V mV/A www.ETAsolution.com Outperform with Efficiency Proprietary Information DO NOT Distribute 4 12QFN3x3-16INSYS35SW67PGND11109STATGND16BATT1514BATT4SW812ISET213USB_DETNTCENPPBISET1ENBSYS

ETA6003 PARAMETER Line Regulation Switching Frequency Max duty HIGHSIDE MOS RDSON LOWSIDE MOS RDSON HIGHSIDE Current limit SYS UVLO Thermal Shutdown POWER PATH Management BATT TO SYS RDSON BATTERY CHARGER Battery CV voltage CONDITIONS VIN =4.75 to 5.25V ISW =500mA ISW =500mA Falling, Hys=200mV Rising, Hys=30oC MIN 100 IBAT =0mA, default 4.16 Charger Restart Threshold From DONE to FastCharge Battery Pre-condition Voltage VBAT Rising Hys=180mV Pre-Condition Charge Current 1.6 RISET1 =500Ω, USB_DET= low Icharge=1V*1000/RISET1 RISET2 =2KΩ, USB_DET= high Icharge=1V*1000/RISET2 Percent of the fast charge current Charger Suspended Charger Suspended ISTATS=10mA TYP 0.04 3 100 60 3.5 2.25 160 50 4.2 -150 2.9 100 2 0.5 120 960 10% 76.5 35 1.5 100 0 UNITS %/V MHz % mΩ mΩ A V oC mΩ V mV V mA A A min min %VIN %VIN %VIN mV μA V V V MAX 4.24 0.3 0.2 AC Fast Charge Current USB Charge Current Pre-condition Timer Fast-Charge Timer EOC current THERMISTOR MONITOR NTC Threshold, Cold NTC Threshold, Hot NTC Threshold Hysteresis NTC Disable Threshold NTC Input Leakage LOGIC INPUT, STATS ENB, ENPPB Logic Input High ENB, ENPPB Logic Input Low STAT Output Low Voltage PIN DESCRIPTION PIN # NAME 1,15 2 3,4 SYS IN SW DESCRIPTION System Voltage Pin. It is also the Switching regulator’s output pin. Connect an inductor and capacitor to form the output filter Input pin. Can be connected to an AC adaptor or a USB charger output. Bypass with a 10F capacitor each to GND and PGND Switching node of the Switching Regulator. Connect a 1H to 2.2H inductor from this pin to www.ETAsolution.com Outperform with Efficiency Proprietary Information DO NOT Distribute 5

ETA6003 PIN # NAME 5 6 7 8 9 10 11 12 PGND ENB NTC ENPPB STATS GND ISET1 ISET2 13 USB_DET 14,16 BATT DESCRIPTION SYS Power Ground. Bypass with a 10F capacitor to IN with a shortest possible trace Active Low Enable pin. Tie this pin low to enable the Charging, tie high to disable Charging, while still keeping powerpath from BATT to SYS Thermistor input Shipping mode enable Pin. Tie to GND to enable power path from BATT to SYS, tie to BATT, to disable this path thereby enabling shipping mode to save power to extend battery life. Status pin for Charging status indications. An open drain device capable of driving 10mA current Analog Ground Pin. Bypass with a 10F capacitor to IN AC Fast Charge Current set pin for AC input. Connecting a Resistor between ISET1 to GND This sets the fast charge current value for AC adapter when USB_DET is low. USB Charge Current set pin for USB input. Connecting a Resistor between ISET2 to GND This sets the charge current value for USB input when USB_DET is high. Charge current selecting input. Pull this pin low if an AC adapter is connected and select fast charging current to be set by ISET1. And set this pin high if a USB input is connected and select USB charging current to be set by ISET2. It is default low. Battery pin. Connect a Battery to this pin TYPICAL CHARACTERISTICS (Typical values are at TA = 25oC unless otherwise specified.) Efficiency Vs ISYS Charger Disabled IPre-Charge Vs VBATT ICharge Vs VBATT RISET=0.5K ) A ( e g r a h C I 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 ) A m ( e g r a h C I 100 90 80 70 60 50 40 30 20 10 0 1 2 2.2 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 4 4.2 4.4 0.05 0.55 1.05 1.55 2.05 VBATT (V) VBATT (V) ŋ 100% 95% 90% 85% 80% 75% 70% 65% 60% 55% 50% VIN=4.7V VIN=5V VIN=5.5V VSYS=3.4V 0.01 0.1 IOUT (A) www.ETAsolution.com Outperform with Efficiency Proprietary Information DO NOT Distribute 6

ETA6003 VSYS Vs Temperature ) V ( S Y S V 4 3.9 3.8 3.7 3.6 3.5 3.4 3.3 3.2 3.1 3 VSYS Vs ISYS ) V ( S Y S V 3.9 3.89 3.88 3.87 3.86 3.85 3.84 3.83 3.82 3.81 3.8 VSYS IChargeVs Temperature Thermal Foldback 2.5 2 1.5 1 0.5 0 ) A ( e g r a h C I 0 1 2 3 -50 0 50 100 -50 0 50 100 ISYS (A) Temperature(OC) Temperature(OC) VIN VSYS VBATT IBATT VSYS VBATT IBATT www.ETAsolution.com Outperform with Efficiency ISYS=10mA DCDC PFM SWITCHING WAVEFROM DCDC PWM SWITCHING WAVEFORM ISYS=2A IN UNPLUGGED Proprietary Information DO NOT Distribute 7 TYPICAL CHARACTERISTICS (Typical values are at TA = 25oC unless otherwise specified.) Battery Inserted During Detection Battery Pulled During Charging IN Plug-In with Battery Connected VIN VSYS VBATT IBATT VIN VSYS VBATT IBATT 1s/div 0.5s/div 5ms/div VSYS Load Step Into Reduce Charging VSYS Load Step Into Supplement Mode VSYS Load Step Into IN DPPM Mode, IIN LIMIT=0.5A VSYS VBATT ISYS VIN VSYS VBATT ISYS 50ms/div 50ms/div 50ms/div

ETA6003 VSW VSYS ISW VIN VBATT VSYS VSW VSYS ISW 10ms/div 0.5us/div 200us/div TYPICAL APPLICATION 2A Switching Charger with Dynamic Power Path with OVP protection and Charge Enable www.ETAsolution.com Outperform with Efficiency Proprietary Information DO NOT Distribute 8 SYSSWPGNDINBATTNTCISET1ISET2USB_DETENBSYSSYSTEM LOAD2.2uH2.2K2KΩ 500Ω 22uF10uF1uFCharge_ENAC_IN2KΩ 4KΩ 39KΩ OVP Thresold 6.8V10uF10KΩ 100KΩ ENPPB

ETA6003 PCB GUIDELINE PCB layout cautions of ETA6003 is shown below. The input capacitor (Cin) between Vin (Pin2) and PGND (Pin5) is always to be placed closest to the IC. SW wire can be laid through the gap between the 2 Cin terminals. It can go underneath the Cin. For all pins that needs to shorted to GND, please connect them to GND (Pin10), not to PGND (Pin5). A real PCB layout example is also listed below for reference. PCB cautions of ETA6003 Real DEMO board PCB for reference PACKAGE OUTLINE www.ETAsolution.com Outperform with Efficiency Proprietary Information DO NOT Distribute 9 Cin10uFExposed Thermal PadVinvia from 2ndlevelCin10uFNo connection here!Vinvia to 2ndlevelCinto be placed closet to IC!SWSW wire goes underneath the Cin

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ETA6003数据手册(ETA6003).pdf

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