ETA1188数据手册(ETA-ETA1188).pdf-资料库

ETA1188 10A Input, 9V/3A or 12V/2A Output BOOST Converter with True-Shutoff DESCRIPTION ETA1188 is a high power, high-efficiency, synchronous boost that can output up to 27W of power. With integrated high power MOSEFTs, it comfortably delivers 9V/3A output from a wide range of input voltage. It also integrates an output short protection MOSEFT on chip to provide over current protection and true-shutoff function. With its tiny package of QFN3x3-20, it sports a small footprint which makes it an ideal all-in-one solution for high power boost applications. The ETA1188 features a programmable output current limit, configurable by a resistor connected from ISET pin to GND. Output voltage can also be programmed by a resistor divider from VOUT to FB to GND. Furthermore, besides external configuration, ETA1188can also be communicated through an I2C protocol to configure the current limit and output voltage internally, making it suitable for Power Delivery or Quick Charge applications. The ETA1188 is available in QFN33-20FC package. TYPICAL APPLICATION CIRCUIT FEATURES  High Power: 9V/3A  High efficiency: Up to 93% at 9V/3A  Wide Input Supply Range, 2.7V to 12V  Wide Output Voltage Range, 3.6V to 12V  True Shutoff with 20mΩ n-Channel Pass Device  Low Shutdown Current:2µA  High Efficiency at Light Load  Programmable current limit, output voltage by resistor or I2C  Accurate Output Current with CC Loop Regulation  Cycle by Cycle Current Limit is up to 12A  Small footprint: 20-pin 3mm × 3mm Flip Chip QFN Package APPLICATIONS  Quick Charge Mobile Power  Bluetooth Speaker Supply  Thunderbolt Interface  Electronic cigarette package. 22uFx2 1uF 10nF 2 BOOT 200 5 7 9 11 SW SW SW SW 15 VIN 1 SCL 20 SDA 22uF 1uH 10K 10K ETA1188 PMID 4 PMID 12 VLDO 19 VOUT 3 VOUT 13 FB 16 22uFx2 R1 Cff R2 VOUT 18 EN PGND PGND PGND AGND ISET 6 8 10 17 Riset 14 Figure 1: ETA1188 Typical Application Circuit Vout = R1+R2 R2 X1.2V PART No. ETA1188F3W PACKAGE FCQFN3x3-20 TOP MARK ETA1188 YWW2L Pcs/Reel 5000 1 Powering Minds of the Smart VLDO VIN SCL SDA EN ORDERING INFORMATION www.etasolution.com

ETA1188 PIN CONFIGURATION A D S 20 O D L V 19 N E 18 D N G A 17 B F 16 SCL BOOT VOUT PMID SW 1 2 3 4 5 ETA1188 VOUT PMID SW SW 6 7 8 9 W S D N G P D N G P W S 10 D N G P FCQFN3x3 - 20 15 14 13 12 11 VIN ISET VOUT PMID SW ELECTRICAL CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS (Note: Exceeding these limits may damage the device. Exposure to absolute maximum rating conditions for long periods may affect device reliability.) IN Voltage to PGND..........................–0.3V to 13.2V OUT, PMID, SW Voltage to PGND.......–0.3V to 16V BOOT Voltage to SW......................–0.3V to SW+5V All Other Pin Voltage to PGND...............–0.3V to 6V SW, IN, OUT to PGND current........Internally limited Operating Temperature Range .........–40°C to 85°C Storage Temperature Range ..........–55°C to 150°C Thermal Resistance θJA FCQFN3X3-20........................30....................oC/W Lead Temperature (Soldering, 10sec) ...........260°C ESD HBM (Human Body Mode) ........................2KV ESD MM (Machine Mode) ..............................200V (VIN =3.3V, VOUT=9V, AGND=PGND, unless otherwise specified. Typical values are at TA = 25°C.) MIN PARAMETER CONDITIONS TYP MAX UNITS IN rising IN falling IN rising IN falling EN=Logic High, No load, No switching VEN=GND, VIN = 4.2V IN_UVLO < VIN < IN_OVP 2.7 0.05 2.6 0.3 12.5 1 200 2 1.5 450 12 5 V V V V V μA μA ms 3.4 kHz MHz SYMBOL VIN IN_UVLO IN_UVLO_HYST IN_OVP IN_OVP_HYST SUPLY CONDITIONS VIN input voltage range Input Under-Voltage- Lock-Out UVLO hysteresis Input Over-Voltage- Protection IN_OVP Hysteresis Quiescent Current Shutdown Supply Current at VIN Power Good Deglitch delay FREQUENCY CONFIGURATION Switching Frequency I2C Clock Frequency Range IQ ISD TPG FREQ FI2C www.etasolution.com 2 Powering Minds of the Smart

ETA1188 OUTPUT CONFIGURATION Feedback Voltage FB Leakage Current ISET Pin Voltage ISET Output Current ratio Output Current Limit VFB IFB VISET KISET VOUT_ILIM 0.98 VOUT =4.5V to 12.6V 1.176 VOUT ≥ VOUT_LOWV VOUT < VOUT_LOWV KISET = IQ1 / IISET Adjustable, RISET=1.6kΩ Adjustable, RISET=1.6kΩ 0.78 1.2 0 1.0 0.8 1.224 1.02 0.82 5000 3.125 3 12 750 270 13.6 1 250 500 2.5 200 1.38 90 0.60 4.4 13.2 155 V nA V V A A A mA mA V mV mV V mV V mV V ms ms °C IPEAK IMIN IQZX VOUT_IFB PMID_OVP Output Current Foldback Switching Cycle-by- Cycle Lowside current limit Minimum Inductor Current each cycle Inductor Zero Crossing Current Stopping threshold PROTECTION PMID Over Voltage Protection PMID_OVP Hysteresis VOUT falling, VOUT enter deep VOUT- VIN condition threshold VOUT rising over VOUT exits deep VIN condition threshold Q1 Swapping sensing VOUT rising threshold VOUT_HIGH Hysteresis VOUT_HIGH_HYST VOUT falling FB Over-Voltage- Protection VFB_OVP Hystersis Output Under Voltage Protection Hiccup Retrying Timer Hiccup Disable Timer Thermal Shutdown To stop switching Track FB pin Voltage Regulator enabled Regulator disabled Rising, Hysteresis=20°C PMID_OVP_HYST VDEEP_ENTER FB_UVP THCON THCOFF VFB_OVP_HYST VDEEP_EXIT VOUT_HIGH VFB_OVP TSD www.etasolution.com 3 Powering Minds of the Smart

2Meg resistor from EN to GND, VEN = 1V. 1.2 VOUT = 9V, VFB=1.5V,VSW=0 or 9V, VEN=GND SLEW[1:0] = 00 SLEW[1:0] = 01 SLEW[1:0] = 10 SLEW[1:0] = 11 VOREG_INT[ ] = 1 3.6 1 20 18 14 0.4 μA V V mΩ mΩ mΩ 10 μA 18 9 4.5 2.25 12 mV/μs V 4000 mA VOUT_INT ILIM_INT IOREG_INT[ ] = 1 500 ETA1188 LOGIC PINS, EN, SDA, SCL Input Current logic high voltage logic low voltage POWER FETS PMID to OUT Switch On Resistance Highside Switch On Resistance Lowside Switch On Resistance RQ1 RQ2 RQ3 SW Leakage Current SW_LKG INTERNAL VOUT SETTING VOUT ramping slew rate VOUT_SLEW Internal VOUT setting range Internal VOUT current limit range www.etasolution.com 4 Powering Minds of the Smart

ETA1188 PIN DESCRIPTION PIN # PIN NAME DESCRIPTION 1 2 3, 13 4, 12 5, 7, 9, 11 6, 8, 10 14 15 16 17 18 19 20 SCL BOOT VOUT PMID SW PGND ISET VIN FB AGND EN VLDO SDA I2C interface clock. Connect a 10-kΩ pull up resistor to VLDO or external 3.3V rail. Bootstrap capacitor connection for the high-side FET gate driver. Connect a 10-nF ceramic capacitor (voltage rating ≥ 10 V) from BOOT pin to SW pin. Output pins. Connect a 2x22uF to GND Midpoint of the Boost output and current limit switch. Connect a 22uF to GND Switching Pin. Connect with an inductor between this pin and input. Power Ground. Boost maximum output current setting. Connect a resistor between this pin and analog ground to set the current level. Input pin. Connect to Battery or input supply. Bypass with a 22uF capacitor from this pin to ground. Feedback pin for setting up the boost output voltage. Analog Ground pin. Enable pin for the IC. LDO Regulator Output. Bypass with 1uF capacitor from this pin to ground. I2C interface data. Connect a 10-kΩ pull up resistor to VLDO or external 3.3V rail. FUNCTIONAL BLOCK DIAGRAM VOUT ISET FB SCL SDA EN AGND CHARGE PUMP VDD ETA1188 PWM CONTROL& DRIVER IOREG [2:0] VOREG [8:0] VOUT 1V 1.2V Gmi Gmv OSC I2C BANDGAP COMP Σ HICCUP & SOFTSTART THERMAL SHUTDOWN Figure 2: ETA1188 Function Block Diagram PMID BOOT SW PGND VIN VIN UVLO LDO ( From PMID) VLDO www.etasolution.com 5 Powering Minds of the Smart

ETA1188 TYPICAL PERFORMANCE CHARATERISTICS Vout Vs. Iout Vout=5V Eff. Vs. Iout Vout=5V 100% 95% 90% 85% 80% 75% 70% 65% 60% 55% ) % ( f f E Vin=3.0V Vin=3.6V Vin=4.2V 0 1 2 3 4 5 50% 0.001 0.01 Iout (A) Vout Vs. Iout Vout=9V Vin=3V Vin=3.6V Vin=4.2V Vin=5V 0 1 2 3 4 5 Iout (A) Vout Vs. Iout Vout=12V Vin=3V Vin=3.6V Vin=4.2V Vin=5V 0.1 Iout (A) Eff. Vs. Iout Vout=9V 100% 95% 90% 85% 80% 75% 70% 65% 60% 55% ) % ( f f E 50% 0.001 0.01 0.1 Iout (A) Eff. Vs. Iout Vout=12V 100% 90% 80% 70% 60% 50% 40% ) % ( f f E 30% 0.001 0.01 0.1 Iout (A) ) V ( t u o V ) V ( t u o V 5.1 5.08 5.06 5.04 5.02 5 4.98 4.96 4.94 4.92 4.9 9 8.98 8.96 8.94 8.92 8.9 8.88 8.86 8.84 8.82 8.8 12 11.95 11.9 11.85 11.8 11.75 ) V ( t u o V Vin=3V Vin=3.6V Vin=4.2V 1 Vin=3V Vin=3.6V Vin=4.2V Vin=5V 1 Vin=3.3V Vin=3.6V Vin=4.2V Vin=5V 1 11.7 0 0.5 1 2 2.5 3 1.5 Iout (A) www.etasolution.com 6 Powering Minds of the Smart

ETA1188 TYPICAL PERFORMANCE CHARATERISTICS (cont’) Load Transient, VOUT = 5V, 1A – 2A, VIN = 4.2V 500us/div Iout Limit Vs. Riset ) A ( t i m i l I 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 0 0 2 4 6 Riset (Kohm) 8 10 200mV/div VOUT IOUT 1A/div 200mV/div VOUT IOUT 1A/div 200mV/div VOUT IOUT 1A/div Load Transient, VOUT = 9V, 1A – 2A, VIN = 4.2V Load Transient, VOUT = 12V, 1A – 2A, VIN = 4.2V 500us/div 500us/div Switching in DCM, VOUT = 5V, IOUT = 100mA, VIN = 4.2V 5us/div Switching in CCM, VOUT = 5V, IOUT = 2A, VIN = 4.2V 1us/div SW 5V/div VOUT 20mV/div ILX 2A/div www.etasolution.com 50mV/div VOUT SW 5V/div ILX 2A/div 7 Powering Minds of the Smart

ETA1188 TYPICAL PERFORMANCE CHARATERISTICS (cont’) Switching in DCM, VOUT = 9V, IOUT = 100mA, VIN = 4.2V 1us/div Switching in CCM, VOUT = 9V, IOUT = 2A, VIN = 4.2V 1us/div 100mV/div VOUT SW 5V/div ILX 2A/div Switching in DCM, VOUT = 12V, IOUT = 100mA, VIN = 4.2V Switching in CCM, VOUT = 12V, IOUT = 100mA, VIN = 4.2V 2us/div VOUT 2us/div 50mV/div VOUT SW 5V/div ILX 2A/div VOUT 20mV/div SW 5V/div ILX 2A/div Start-up no load, VOUT = 5V, VIN = 4.2V 500us/div 5V/div EN PMID 2V/div 2V/div VOUT ILX 5A/div 20mV/div SW 10V/div ILX 2A/div Start-up, ROUT = 3Ω, VOUT = 5V, VIN = 4.2V 500us/div 5V/div EN PMID 2V/div 2V/div VOUT ILX 5A/div www.etasolution.com 8 Powering Minds of the Smart

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ETA1188数据手册(ETA-ETA1188).pdf

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