XT1861B362MR-G

XT1861 Synchronous DC-DC Boost Converter ■ General Description ■ Features XT1861 series is a high efficiency, low ripple , high  Maximum efficiency: 94% frequency PFM control DC-DC boost converter.  Maximum operating frequency: 300KHz XT1861 series requires only three external components,  Low Quiescent Current: 15μA the device can change the low voltage input of battery  Output Voltage: 1.8V ~ 5.0V (step 0.1V) step-up into output voltages for electronic devices.  Output Accuracy: ± 2.5%  Input voltage: 0.9V ~ 6.5V  low ripple and low noise  Small volume ■ Applications  1 to 3 batteries of electronic equipment  Electronic dictionaries, digital cameras  LED flashlights, LED Light,  Blood pressure monitors, MP3, remote control toys,  SOT-23-3L  Wireless headsets,wireless mouse, keyboard  SOT-23-3B  Medical devices, anti-lost alarm,  SOT-23-5L  Car alarm,charger,VCR,PDA and other handheld  SOT-89-3L electronic devices  TO-92S ■ Package  TO-92 ■ Typical Application Circuit L VIN LX VOUT CIN CE VOUT COUT GND GND GND Note: CIN=10µF, COUT=22 µF, L=10uH. Rev.1.2 —Nov. 7. 2016 1 http://www.silinktek.com XT1861 ■ Ordering Information XT1861 B①②③④⑤ Designator Symbol ①② 18-50 ③ 2 Precision：2% M Package Types: SOT-23-3L V Package Types: SOT-23-3B S Package Types: SOT-23-5L P Package Types: SOT89-3L T Package Types: TO-92S L Package Types: TO-92 R Embossed Tape :Standard Feed L Embossed Tape :Reverse Feed ④ ⑤ Description Output Voltage: e.g. 33= 3.3V etc. ■ Pin Assignment 3 5 4 VOUT LX GND GND VOUT LX GND LX CE VOUT NC GND VOUT LX 1 2 1 2 3 1 2 3 SOT-23-3L (TOP VIEW) SOT-23-5L (TOP VIEW) SOT-89-3L (TOP VIEW) 1 2 3 TO-92 (FRONT VIEW) GND VOUT LX 1 2 3 TO-92S (FRONT VIEW) ■ Functional Pin Description Pin Number Pin Name Function Description 3 LX Switch pin 2 2 VOUT Output pin — — — CE Chip enable pin 4 1 1 1 GND Ground 3 — — — NC NC SOT-23-3L SOT-23-5L SOT-89-3L TO-92S TO-92 2 5 3 3 3 2 2 — 1 1 — Rev.1.2 —Nov. 7. 2016 2 http://www.silinktek.com XT1861 ■ Marking Rule  SOT-89-3L ,SOT-23-3L/B,SOT-23-5L,SOT89-3L,TO-92S,TO-92 . . . .. . . . . .. . ① ② ③ ④ SOT-23-3L (TOP VIEW) . .. . . . ① ② ③ ④ . . . .. . ① ② ③ ④ ① ② ③ ④ SOT-23-5L (TOP VIEW) SOT-89-3L (TOP VIEW) TO-92 (FRONT VIEW) ..... . ①②③④ TO-92S (FRONT VIEW) ① Represents the product name Symbol Product Name A XT1861B***** ② Represents the output voltage range Output Voltage(V) 0.1～3.0 3.1～6.0 300KHz T X 180KHz U Y 100KHz V Z ③ Represents the output voltage Symbol Output Voltage(V) Symbol Output Voltage(V) 0 - 3.1 - F 1.6 4.6 - 1 - 3.2 - H 1.7 4.7 - 2 - 3.3 - K 1.8 4.8 - 3 - 3.4 - L 1.9 4.9 - 4 - 3.5 - M 2 5.0 - 5 - 3.6 - N 2.1 5.1 - 6 - 3.7 - P 2.2 5.2 - 7 - 3.8 - R 2.3 5.3 - 8 - 3.9 - S 2.4 5.4 - 9 - 4 - T 2.5 5.5 - A - 4.1 - U 2.6 5.6 - B - 4.2 - V 2.7 5.7 - C - 4.3 - X 2.8 5.8 - D - 4.4 - Y 2.9 5.9 - E 1.5 4.5 - Z 3 6.0 - ④ Represents the assembly lot No. 0-9，A-Z; 0-9，A-Z mirror writing，repeated（G，I，J，O，Q，W exception） For example:A6TX, represents the output voltage of XT1861B552*R 5.5V。 Notes: "• "represents the batch number. "• "says" 1 ", dot not said "0"; For example: dot on the top of the "③", and the top right of the "④", said "010010", used to track the product batch. Rev.1.2 —Nov. 7. 2016 3 http://www.silinktek.com XT1861 ■ Function Block Diagram LX VOUT Current Limiting comparator + Error Amplifier buffer + - PFM comtrol 1.24V Band gap OSC 300KHz CE GND Chip Enable ■ Absolute Maximum Ratings Parameter Input voltage Current Power dissipation Symbol Description Typical Unit Vmax Maximum voltage supply for VOUT and VLX pin 6.5 V Maximum current in LX pin 1000 mA SOT-23-3L maximum power dissipation 350 mW SOT-23-3Bmaximum power dissipation 250 mW SOT-23-5L maximum power dissipation 350 mW SOT89-3L maximum power dissipation 500 mW TO-92S maximum power dissipation 500 mW ILXmax PD Tmin-max Temperature Tstorage ESD Rev.1.2 —Nov. 7. 2016 VESD Operating Ambient Temperature -40—85 Storage Temperature -40—165 Body static pressure values 4 °C 2000 V http://www.silinktek.com XT1861 ■ Electrical Characteristics Parameter Symbol Test condition Min Typ Max Units Output voltage accuracy △VOUT - -2.5 - 2.5 % Maximum input voltage VINMAX - 0.9 - 6.5 V Start voltage VSTART ILOAD=1mA,VIN:0→2V - - 0.8 V Hold voltage VHOLD ILOAD=1mA,VIN:2→0V 0.6 - - V Oscillation signal duty cycle DCOSC - - - 78 % η - - 90 94 % Limit current ILIMIT - 600 800 1000 mA Input current (No load) LINO VIN=1.8V,VOUT=3.0V - 15 - µA Efficiency ■ Typical Performance Characteristics 1. Active Current VS Input Voltage 2. Output Current Limit VS Vin Active Current VS Input Voltage Current Limit VS Vin 40 1000 36 900 Output Current Limit (mA) Active Current (uA) 32 TJ=25℃, IL=0mA, VOUT=3.3V 28 24 20 16 12 8 4 0 1.2 800 700 600 TJ=25℃，VOUT=3.3V 500 400 300 200 100 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 0 0.0 3.2 0.4 0.8 1.2 Input Voltage (V) 3. Output Voltage VS Input Voltage 4. 100.0 5.4 97.5 4.8 95.0 2.8 3.2 TJ=25℃, VIN=2.3V, VOUT=3.3V 92.5 TJ=25℃, IL=0mA, VOUT=3.3V Efficiency (%) Output Voltage (V) 2.4 Efficiency VS Output Current Output Voltage VS Input Voltage 3.6 3.0 2.4 90.0 87.5 85.0 1.8 82.5 1.2 80.0 0.6 77.5 0.0 0.0 2.0 Efficiency VS Output Current 6.0 4.2 1.6 Input Voltage (V) 75.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 0 Input Voltage (V) Rev.1.2 —Nov. 7. 2016 30 60 90 120 150 180 210 240 270 300 Output Current (mA) 5 http://www.silinktek.com XT1861 5. Efficiency VS Output Current 6. Quiescent Current VS Temperature Efficiency VS Output Current Quiescent Current VS Temperature 100.0 40 97.5 36 TJ=25℃, VOUT=3.3V, IL=50mA Quiescent Current (uA) 95.0 Efficiency (%) 92.5 90.0 87.5 85.0 82.5 80.0 77.5 75.0 1.4 32 VOUT=6.0V 28 24 20 16 12 8 4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 0 -40 3.2 -20 0 7. 20 40 60 80 100 120 100 120 Temperature (℃) Input Voltage (V) Start Voltage VS Temperature 8. Output Current Limit VS Temperature Start Voltage VS Temperature Output Current Limit VS Temperature 1.5 300 290 Output Current Limit (mA) 1.4 Start Voltage (V) 1.3 IL=0mA 1.2 1.1 1.0 280 VIN=2.3V 270 260 250 240 230 220 0.9 210 0.8 -40 -20 0 20 40 60 80 100 200 -40 120 -20 0 Temperature (℃) 9. Maximum oscillation frequency VS Temperature Maximum oscillation frequency VS Temperature 60 80 Oscillation Signal Duty Cycle VS Temperature 100 Oscillation Signal Duty Cycle (%) Maximum oscillation frequency (MHZ) 40 10. Oscillation Signal Duty Cycle VS Temperature 600 550 500 VOUT=2.3V, LX=300Ω to VOUT 450 400 350 300 250 200 -40 20 Temperature (℃) -20 0 20 40 60 80 100 VOUT=2.3V, LX=300Ω to VOUT 80 70 60 50 -40 120 Temperature (℃) Rev.1.2 —Nov. 7. 2016 90 -20 0 20 40 60 80 100 120 Temperature (℃) 6 http://www.silinktek.com XT1861 11. Output Voltage VS Temperature 12. Load Regulation VS Temperature Output Voltage VS Temperature Load Regulation VS Temperature 3.40 90 80 3.35 Load Regulation (mV) Output Voltage (V) 70 3.30 VIN=2.3V,IL=50mA 3.25 3.20 VIN=2.3V, IL=1mA to 100mA 60 50 40 30 20 3.15 10 3.10 -40 -20 0 20 40 60 80 100 0 -40 120 13. CE high Voltage VS -20 0 20 40 60 80 100 120 Temperature (℃) Temperature (℃) Temperature CE high Voltage VS Temperature 1.6 VIN=2.3V 1.4 CE high Voltage (V) 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -40 -20 0 20 40 60 80 100 120 Temperature (℃) Rev.1.2 —Nov. 7. 2016 7 http://www.silinktek.com XT1861 ■ Package Information  SOT-23-3L θ D b E E1 L 0.2 e c Symbol Dimensions In Millimeters A A2 A1 e1 Dimensions In Inches Min Max Min Max A 1.050 1.250 0.041 0.049 A1 0.000 0.100 0.000 0.004 A2 1.050 1.150 0.041 0.045 b 0.300 0.500 0.012 0.020 c 0.100 0.200 0.004 0.008 D 2.820 3.020 0.111 0.119 E 1.500 1.700 0.059 0.067 E1 2.650 2.950 0.104 0.116 e 0.950(BSC) 0.037(BSC) e1 1.800 2.000 0.071 0.079 L 0.300 0.600 0.012 0.024 θ 0° 8° 0° 8° Rev.1.2 —Nov. 7. 2016 8 http://www.silinktek.com XT1861  SOT-23-3B θ D b L E E1 L1 0.2 e c Symbol A A2 A1 e1 Dimensions In Millimeters Dimensions In Inches Min Max Min Max A 1.050 1.250 0.041 0.049 A1 0.000 0.100 0.000 0.004 A2 1.050 1.150 0.041 0.045 b 0.300 0.500 0.012 0.020 c 0.100 0.200 0.004 0.008 D 2.820 3.020 0.111 0.119 E 1.500 1.700 0.059 0.067 E1 2.650 2.950 0.104 0.116 e 0.950(BSC) 0.037(BSC) e1 1.800 2.000 0.071 0.079 L 0.300 0.600 0.012 0.024 θ 0° 8° 0° 8° Rev.1.2 —Nov. 7. 2016 9 http://www.silinktek.com XT1861  SOT-23-5L θ D 0.2 E E1 L b e c Symbol A A2 A1 e1 Dimensions In Millimeters Dimensions In Inches Min Max Min Max A 1.050 1.250 0.041 0.049 A1 0.000 0.100 0.000 0.004 A2 1.050 1.150 0.041 0.045 b 0.300 0.500 0.012 0.020 c 0.100 0.200 0.004 0.008 D 2.820 3.020 0.111 0.119 E 1.500 1.700 0.059 0.067 E1 2.650 2.950 0.104 0.116 e 0.950(BSC) 0.037(BSC) e1 1.800 2.000 0.071 0.079 L 0.300 0.600 0.012 0.024 θ 0° 8° 0° 8° Rev.1.2 —Nov. 7. 2016 10 http://www.silinktek.com XT1861  SOT-89-3L D A E E1 D1 b1 L e b c e1 Symbol Dimensions In Millimeters Dimensions In Inches Min Max Min Max A 1.400 1.600 0.055 0.063 b 0.320 0.520 0.013 0.020 b1 0.400 0.580 0.016 0.023 c 0.350 0.400 0.014 0.017 D 4.400 4.600 0.173 0.181 D1 1.550REF. 0.061REF. E 2.300 2.600 0.091 0.102 E1 3.940 4.250 0.155 0.167 e 1.500TYP 0.060TYP e1 3.000TYP 0.118TYP L Rev.1.2 —Nov. 7. 2016 0.900 1.200 11 0.035 0.047 http://www.silinktek.com XT1861  TO-92 D A1 E D1 L h A C b Φ e e1 Symbol Dimensions In Millimeters Dimensions In Inches Min Max Min Max A 3.300 3.700 0.130 0.146 A1 1.100 1.400 0.043 0.055 b 0.380 0.550 0.015 0.022 c 0.360 0.510 0.014 0.020 D 4.400 4.700 0.173 0.185 D1 3.430 E 4.300 e 0.135 4.700 0.169 1.270TYP 0.185 0.050TYP e1 2.440 2.640 0.096 0.104 L 14.100 14.500 0.555 0.571 Φ h Rev.1.2 —Nov. 7. 2016 1.600 0.000 0.380 12 0.063 0.000 0.015 http://www.silinktek.com XT1861  TO-92S D D1 E θ C A1 A b1 L b e e1 Symbol Dimensions In Millimeters Dimensions In Inches Min Max Min Max A 1.420 1.620 0.056 0.064 A1 0.660 0.860 0.026 0.034 b 0.350 0.480 0.014 0.019 b1 0.400 0.550 0.016 0.022 c 0.360 0.510 0.014 0.020 D 3.900 4.100 0.154 0.161 D1 2.280 2.680 0.090 0.106 E 3.050 3.250 0.120 0.128 e 1.270TYP 0.050TYP e1 2.440 2.640 0.096 0.104 L 15.100 15.500 0.594 0.610 θ Rev.1.2 —Nov. 7. 2016 45°TYP 45°TYP 13 http://www.silinktek.com