ETA6953数据手册(ETA-ETA6953).pdf

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FEATURES  High-Efficiency, 1.5MHz, Synchronous Switching Buck Charger  90% Charge Efficiency at 2A from 5V Input  Programmable PFM Mode for Light Load Conditions ETA6953 I2C Controlled 13.5V/3A, 1-Cell Battery Charger with Power Path Management DESCRIPTION The ETA6953 is a highly-integrated 3.0-A switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery. It features fast charging with high input voltage support for a wide range of smart phones, tablets and portable devices. Its low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. Its input voltage and current regulation deliver maximum charging power to battery. The solution is highly integrated with input reverse-blocking FET (RBFET, Q1), high-side switching FET (HSFET, Q2), low-side switching FET (LSFET, Q3), and battery FET (BATFET, Q4) between system and battery. It also integrates the bootstrap diode for the high-side gate drive for simplified system design. The I2C serial interface with charging and system settings makes the device a truly flexible solution.  Supports USB On-The-Go (OTG) Up to 1.2A Output  91% Boost Efficiency at 1A Output  Output Short Circuit Protection  Programmable PFM Mode for Light Load Conditions  Wide Range Single Input to Support both USB Input and High Voltage Adapters  Support 3.9V to 13.5V Input Voltage Range With  Programmable Current Limit Boost Converter with The device supports a wide range of input sources: standard USB host port, USB charging port, and USB compliant high voltage adapter. To support fast charging using high voltage adapter, the ETA6953 provides PSEL pin for USB switch control. To set the default input current limit, device takes the result from detection circuit in the system, such as USB PHY device. The device is compliant with USB 2.0 and USB 3.0 power spec with input current and voltage regulation. The device also meets USB On- the-Go (OTG) operation power rating specification by supplying 5.15 V on VBUS with constant current limit up to 1.2-A. The power path management regulates the system slightly above battery voltage but does not drop below 3.5 V minimum system voltage (programmable). With this feature, the system maintains operation even when the battery is completely depleted or removed. When the input current limit or voltage limit is reached, the power path management automatically reduces the charge current to zero. As the system load continues to increase, the power path discharges the battery until the system power requirement is met. This Supplement Mode prevents overloading the input source. The ETA6953 is available in a QFN4x4-24L package. 30V Absolute Maximum Input Voltage Rating  Programmable Input Current Limit (100mA to 3.2A With 100mA Resolution) to Support USB 2.0, USB 3.0 Standards and High Voltage Adaptors (IINDPM)  High Battery Discharge Efficiency With 27mΩ Battery Discharge MOSFET  Narrow VDC (NVDC) Power Path Management  BATFET Control to Support Ship Mode, Wake Up and Full System Reset  Flexible Autonomous and I2C Mode for Optimal System Performance  High Integration Includes All MOSFETs, Current Sensing and Loop Compensation  26uA Low Battery Leakage Current to Support Ship Mode  Safety  Battery Temperature Sensing for Charge and Boost Mode  Thermal Regulation and Thermal Shutdown Input UVLO and Overvoltage Protection  APPLICATIONS  Tablet PC, Smart Phone, Internet Devices  Portable Audio Speaker  Handheld Computers, PDA, POS www.etasolution.com 1 Empower, Transcend, Achieve!

1 VAC 24 VBUS 23 PMID 7 nINT 3 nPG 6 SDA 5 SCL 9 nCE 2 PSEL 12 nQON BST 21 SW 19 SW 20 SYS 15 SYS 16 ETA6953 STAT 4 BAT 13 BAT 14 VLDO 22 TS 11 GND 17 GND 18 PART No. ETA6953Q4Y PACKAGE QFN4x4-24 TOP MARK ETA6953 YWW2L VSYS Pcs/Reel 5000 ETA6953 TYPICAL APPLICATION VBUS VIO HOST USB PHY ORDERING INFORMATION PIN CONFIGURATION S U B V 24 I D M P 23 O D L V 22 T S B 21 W S 20 W S 19 ABSOLUTE MAXIMUM RATINGS (Note: Exceeding these limits may damage the device. Exposure to absolute maximum rating conditions for long periods may affect device reliability.) VAC, VBUS, PMID to GND Voltage .........................–2V to 30V SW to GND Voltage...............................................–0.3V to 20V nPG, STAT to GND Voltage ..................................–0.3V to 12V SYS, BAT to GND Voltage.......................................–0.3V to 6V BST to SW Voltage .................................................–0.3V to 6V All Other Pin to GND Voltage................................. –0.3V to 6V SW, VBUS, BAT, SYS to PGND current...........Internally limited Operating Temperature Range...........................–40°C to 85°C Storage Temperature Range............................–55°C to 150°C Thermal Resistance θJA θJC QFN4x4–24pin...................35................10...................... °C/W Lead Temperature (Soldering,10sec) .............................260°C Empower, Transcend, Achieve! VAC PSEL nPG STAT SCL SDA 1 2 3 4 5 6 ETA6953 18 17 16 15 14 GND GND SYS SYS BAT GND 13 BAT 7 T N n I 8 C N 9 E C n 10 C N 11 S T 12 N O Q n QFN4 x 4 - 24 www.etasolution.com 2

ETA6953 ELECTRICAL CHARACTERISTICS (Vbat = 3.6V, unless otherwise specified. Typical values are at TA = 25°C.) PARAMETER QUIESCENT CURRENTS Battery discharge current (BAT, SW, SYS) in buck mode Battery discharge current (BAT) in buck mode Battery discharge current (BAT, SW, SYS) Input supply current (VBUS) in buck mode Battery Discharge Current in boost mode VBUS, VAC AND BAT PIN POWER-UP VBUS operating range VBUS for active I2C, no battery Sense VBUS pin voltage I2C active hysteresis One of the conditions to turn on VLDO One of the conditions to turn on VLDO Sleep mode falling threshold Sleep mode rising threshold VBUS 6.5V Overvoltage rising threshold VBUS 11V Overvoltage rising threshold VBUS 14V Overvoltage rising threshold VBUS 6.5V Overvoltage hysteresis VAC 11V Overvoltage hysteresis VAC 14V Overvoltage hysteresis BAT for active I2C, no adapter Battery Depletion Threshold Battery Depletion Threshold Battery Depletion rising hysteresis Bad adapter detection falling threshold Bad adapter detection hysteresis Bad adapter detection current source CONDITIONS MIN TYP MAX UNITS VBAT = 4.5V, VVBUS < VBUS-UVLOZ, leakage between BAT and VBUS, TJ< 85°C VBAT = 4.5V, HIZ Mode and BATFET_DIS = 1 or No VBUS, I2C disabled, BATFET Disabled. TJ < 85°C VBAT = 4.5V, HIZ Mode and OVPFET_DIS = 1 or No VBUS, I2C Disabled, BATFET Enabled. TJ < 85°C VVBUS > VBUS_UVLO, VBUS > VBAT, converter switching, VBAT = 3.8V, ISYS = 0A VBAT = 4.2V, boost mode, IVBUS = 0A, converter switching VVBUS rising VVBUS rising VVBUS falling from above VVBUS_UVLO VVBUS rising VVBUS falling (VVBUS–VBAT ), VBUSMIN_FALL ≤ VBAT ≤ VREG, VVBUS falling (VVAC–VVBAT ), VBUSMIN_FALL ≤ VBAT ≤ VREG, VAC rising VVBUS rising, OVP<1:0> = '01’ VVBUS rising, OVP<1:0> = '10' VVBUS rising, OVP<1:0> = '11' VVBUS falling, OVP<1:0> = '01’ VVBUS falling, OVP<1:0> = '10' VVBUS falling, OVP<1:0> = '11' VBAT rising VBAT falling VBAT rising VBAT rising VBUS falling Sink current from VBUS to GND 3.9 15 110 6 10 13 2.5 2.2 2.35 3.7 26 5 50 µA µA 100 180 µA 5 2 3.3 300 3.65 500 60 220 6.5 11 14 220 400 500 2.7 2.4 2.58 180 3.9 80 30 13.5 3.6 3.9 110 330 7 12 15 2.6 2.8 4.1 mA mA V V mV V mV mV mV V V V mV mV mV V V V mV V mV mA www.etasolution.com 3 Empower, Transcend, Achieve!

ETA6953 PARAMETER POWER-PATH System regulation voltage System Regulation Voltage Maximum DC system voltage output Top reverse blocking MOSFET on- resistance between VBUS and PMID - Q1 Top switching MOSFET on- resistance between PMID and SW - Q2 Bottom switching MOSFET on-resistance between SW and GND - Q3 SYS-BAT MOSFET on-resistance – Q4 BATFET forward voltage in supplement mode BATTERY CHARGER Change voltage program range Charge voltage step Charge voltage setting Charge voltage setting accuracy Charge current regulation range Charge current regulation step Charge current regulation setting Charge current regulation accuracy Battery LOWV falling threshold Battery LOWV rising threshold Precharge current regulation Termination current regulation Battery short voltage Battery short voltage Battery short current Recharge Threshold below VBAT_REG Recharge Threshold below VBAT_REG INPUT VOLTAGE AND CURRENT REGULATION Input voltage regulation limit VBAT < SYS_MIN[2:0] = 101, BATFET Disabled (REG07[5] = 1) ISYS = 0A, VBAT > VSYS_MIN, VBAT = 4.400V, BATFET disabled (REG07[5] = 1) ISYS = 0A, Q4 off, VBAT≤ 4.400V, VBAT > VSYSMIN = 3.5V -40°C≤ TA ≤ 125°C VVLDO = 5 V , -40°C≤ TA ≤ 125°C VVLDO = 5 V , -40°C≤ TA ≤ 125°C QFN package, Measured from BAT to SYS, VBAT = 4.2V, TJ = –40 - 125°C VREG (REG04[7:3]) = 4.208 V (01011), V, –40 ≤ TJ ≤ 85°C VBAT = 4.208 V or VBAT = 4.352 V, –40 ≤ TJ ≤ 85°C ICHG = 1980mA, VVBAT = 3.1V or VVBAT = 3.8V ICHG = 1980mA, VVBAT = 3.1V or VVBAT = 3.8V ICHG = 1980mA Pre-charge to fast charge IPRECHG[3:0] = '0010' = 180mA ICHG >780 mA, ITERM[3:0] = '0010' VVBAT = 4.208V VVBAT falling VVBAT rising VVBAT =1V VBAT falling, REG04[0] = 0 VBAT falling, REG04[0] = 1 VINDPM[3:0] = 0110 = 4.5 V CONDITIONS MIN TYP MAX UNITS 20 35 21 13 3.856 3.68 VBAT+7 0mV 4.47 40 70 43 27 30 32 60 105 65 40 4.624 4.187 4.208 4.229 -0.5 0 -10 2.6 2.9 144 144 1.8 2.05 70 190 4.32 60 1980 2.8 3.1 180 180 2 2.25 145 120 240 4.5 +0.5 3000 +10 3 3.3 216 216 2.2 2.45 170 290 4.68 V V mΩ mΩ mΩ mΩ mV V mV V % mA mA mA % V V mA mA V V mA mV mV V www.etasolution.com 4 Empower, Transcend, Achieve!

ETA6953 PARAMETER Input voltage regulation accuracy Input voltage regulation limit tracking VBAT USB input current regulation limit CONDITIONS VINDPM[3:0] = 3.9V, VDPM_VBAT_TRACK = 300mV, VBAT = 4.0V VVBUS = 5V, current pulled from SW, IINDPM [4:0] = 10111 = 2.4 A, –40 ≤ TJ ≤ 85°C MIN -4 4.13 TYP 4.3 MAX 4 4.47 2.16 2.4 2.64 UNITS % V A mA % % °C °C °C °C % % % % % % % % % % % 78 77 29.2 32.4 200 108 103 110 90 160 30 73.3 71.5 68 66.8 44.7 45.7 34.2 35.3 80.0 79.0 31.2 34.4 82 81 33.2 36.4 Temperature Increasing, TREG = 1 Temperature Increasing, TREG = 0 Charger suspends charge. As Percentage to VLDO As Percentage to VLDO VBAT rising, as percentage of VBAT_REG VBAT falling, as percentage of VBAT_REG Input current limit during system start-up sequence BAT PIN OVERVOLTAGE PROTECTION Battery overvoltage threshold Battery overvoltage threshold Hysteresis THERMAL REGULATION AND THERMAL SHUTDOWN Junction Temperature Regulation Threshold Junction Temperature Regulation Threshold Thermal Shutdown Rising Temperature Thermal Shutdown Hysteresis JEITA Thermistor Comparator (BUCK MODE) T1 (0°C) threshold, Charge suspended T1 below this temperature. Falling T2 (10°C) threshold, Charge back to ICHG/2 and 4.2 V below this temperature Falling T3 (45°C) threshold, charge back to ICHG and 4.05V above this temperature. Falling T5 (60°C) threshold, charge suspended above this temperature. Falling As Percentage to VLDO COLD OR HOT THERMISTER COMPARATOR (BOOST MODE) As Percentage to VLDO (Approx. -20°C w/ Cold Temperature Threshold, TS pin 103AT), TJ = –20°C - 125°C Voltage Rising Threshold TJ = –20°C - 125°C Falling As Percentage to VLDO (Approx. 60°C w/ Hot Temperature Threshold, TS pin 103AT), TJ = –20°C - 125°C Voltage falling Threshold Rising TJ = –20°C - 125°C CHARGE OVERCURRENT COMPARATOR (CYCLE-BY-CYCLE) As Percentage to VLDO Charger suspends charge. As Percentage to VLDO As Percentage to VLDO As Percentage to VLDO As Percentage to VLDO www.etasolution.com 5 Empower, Transcend, Achieve!

ETA6953 PARAMETER CONDITIONS HSFET cycle-by-cycle over-current threshold System over load threshold CHARGE UNDER-CURRENT COMPARATOR (CYCLE-BY-CYCLE) LSFET under-current falling threshold PWM PWM switching frequency Maximum PWM duty cycle BOOST MODE OPERATION Boost mode regulation voltage Boost mode regulation voltage accuracy Oscillator frequency From sync mode to non-sync mode VVBUS = 9V, ILDO = 40mA VVBUS = 9V, VLDO = 4V VLDO REGULATION LDO output voltage LDO output current limit LOGIC I/O PIN CHARACTERISTICS (nCE, PSEL, SCL, SDA) Input low threshold Input high threshold High-level leakage current LOGIC I/O PIN CHARACTERISTICS (nPG, STAT, nINT) Low-level output voltage VBUS/BAT POWER UP Bad adapter detection duration BATTERY CHARGER Deglitch time for charge Termination Deglitch time for recharge System over-current deglitch time to turn off Q4 Pull up rail 1.8 V Battery voltage exiting boost mode OTG mode output current OTG overvoltage threshold HSFET under current falling threshold Hiccup Retrying timer Hiccup Off timer Maximum retry allowed VVBAT = 3.8 V, I(PMID) = 0 A, BOOSTV[1:0] = '10' VVBAT = 3.8 V, I(PMID) = 0 A, BOOSTV[1:0] = '10' VVBAT falling, MIN_VBAT_SEL = 0 VVBAT rising, MIN_VBAT_SEL =0 VVBAT falling, MIN_VBAT_SEL = 1 VVBAT rising, MIN_VBAT_SEL = 1 BOOST_LIM = 1 BOOST_LIM = 0 Rising threshold After the last retry, part clear OTG_CONFIG bit to disable Boost MIN 4.8 4.7 5 -3 2.6 2.8 2.3 2.6 1.2 0.5 5.6 1.3 TYP MAX UNITS 5.8 5.2 250 1500 97 5.15 2.8 3 2.5 2.8 1.4 0.7 6 100 7 28 7 5 80 30.0 7 32 1 7.5 5.7 5.3 3 3.0 3.2 2.7 3.0 6.4 0.4 1 0.4 A A mA kHz % V % V V V V A A V mA ms ms Time V mA V V µA V ms s ms ms www.etasolution.com 6 Empower, Transcend, Achieve!

ETA6953 PARAMETER Battery over-voltage deglitch time to disable charge Typical Charge Safety Timer Range Typical Top-Off Timer Range nQON TIMING nQON low time to turn on BATFET and exit ship mode nQON low time to reset BATFET BATFET off time during full system reset Enter ship mode delay DIGITAL CLOCK AND WATCHDOG TIMER REG05[4]=01 CONDITIONS MIN TYP MAX UNITS CHG_TIMER = 1 TOP_OFF_TIMER[1:0] = 10 (30 min) –10oC ≤ TJ ≤ 60oC –10oC ≤ TJ ≤ 60oC –10oC ≤ TJ ≤ 60oC –10 oC ≤ TJ ≤ 60oC 10 10 30 1.15 10 320 12 40 µs Hr min s s ms s s PIN DESCRIPTION PIN # PIN NAME 1 VAC VBUS PSEL nPG STAT SCL SDA nINT NC nCE NC TS 24 2 3 4 5 6 7 8 9 10 11 DESCRIPTION Charger input voltage sense. This pin must be connected to VBUS pin. Charger input voltage. Bypass it with a 10-μF ceramic capacitor from VBUS to PGND. The capacitor should be close to the VBUS pin. Power source selection input. Set 500 mA input current limit by pulling this pin high and set 2.4A input current limit by pulling this pin low. Once the device gets into host mode, the host can program different input current limits to IINDPM register. Open drain active low power good indicator. Connect to the pull up rail through 10-kΩ resistor. LOW indicates a good input source if the input voltage is between VBUSUVLO and VBUS_OV, above SLEEP mode threshold, and current limit is above 30 mA. Open-drain charge status output. Connect the STAT pin to a logic rail via 10-kΩ resistor. The STAT pin indicates charger status. Connect a current limit resistor and a LED from a rail to this pin. Charge in progress: LOW Charge complete or charger in SLEEP mode: HIGH Charge suspend (fault response)or No bat: 1-Hz, 50% duty cycle Pulses I2C interface clock. Connect a 10-kΩ pull up resistor to the logic rail. I2C interface data. Connect a 10-kΩ pull up resistor to the logic rail. Open-drain interrupt Output. Connect the INT to a logic rail through 10-kΩ resistor. The INT pin sends an active low, 256-µs pulse to host to report charger device status and fault. No Connect. Keep the pin float Charge disable control pin. nCE=0, charge is enabled. nCE=1, charge is disabled. No Connect. Keep the pin float Temperature qualification voltage input to support JEITA profile. Connect a negative temperature coefficient thermistor. Program temperature window with a resistor divider from VLDO to TS to GND. www.etasolution.com 7 Empower, Transcend, Achieve!

ETA6953 PIN NAME PIN # nQON 12 BAT SYS GND SW BST VLDO PMID EP 13, 14 15, 16 17, 18 19, 20 21 22 23 EP DESCRIPTION Charge suspends when either TS pin is out of range. When TS pin is not used, connect a 10-kΩ resistor from VLDO to TS and connect a 10-kΩ resistor from TS to GND. It is recommended to use a 103AT-2 thermistor. BATFET enable/reset control input. When BATFET is in ship mode, a logic low of tSHIPMODE (typical 1.15s) duration turns on BATFET to exit shipping mode. When VBUS is not plugged-in, a logic low of tQON_RST (minimum 8s) duration resets SYS (system power) by turning BATFET off for tBATFET_RST (minimum 250 ms) and then re-enable BATFET to provide full system power reset. The pin contains an internal pull-up to maintain default high logic. Positive battery terminal. The internal BATFET and current sensing is connected between SYS and BAT. Connect a 10 μF close to the BAT pin. Converter output connection point. The internal current sensing network is connected between SYS and BAT. Connect a 20 μF close to the SYS pin. Power Ground Switching node output. Connected to output inductor. Connect the 10nF bootstrap capacitor from SW to BTST Bootstrap capacitor connection for the high-side FET gate driver. Connect a 10nF ceramic capacitor from BST pin to SW pin. LDO Output Voltage. Bypass the pin with 4.7μF (10V rating) capacitor from VLDO to GND. The capacitor should be closed to the pin Connection point between reverse blocking FET and high-side switching FET. Bypass it with a minimum of 10μF capacitor from PMID to PGND. This capacitor should be close to the PMID pin. Thermal pad and ground reference. This pad is ground reference for the device and it is also the thermal pad used to conduct heat from the device. This pad should be tied externally to a ground plane through PCB vias under the pad. TYPICAL PERFORMANCE CHARACTERISTICS (Typical values are at TA = 25oC unless otherwise specified.) ) V ( t u o V 5.5 5.4 5.3 5.2 5.1 5 4.9 4.8 4.7 4.6 4.5 OTG Vout Vs. Iout Vout=5.1V Vbat=3.3V Vbat=3.6V Vbat=3.8V Vbat=4.2V Vbat=4.35V 0 0.2 0.4 0.6 Iout (A) 0.8 1 1.2 www.etasolution.com 8 ) % ( y c n e i c i f f E 100% 95% 90% 85% 80% 75% 70% 65% 60% 55% 50% OTG Eff. Vs. Iout Vout=5.1V Vbat=3.3V Vbat=3.6V Vbat=3.8V Vbat=4.2V Vbat=4.35V 1 0.01 0.1 Iout (A) Empower, Transcend, Achieve!

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