TCS3187B_E33

TCS3187B Ｓｙｎｃｈｒｏｎｏｕｓ　ＤＣ－ＤＣ　Ｂｏｏｓｔ　Ｃｏｎｖｅｒｔｅｒ　Ｗｉｔｈ　Ｗｈｏｌｌｙ　Ｓｈｕｔｄｏｗｎ ■ General Description TCS3187B series is a high efficiency, low ripple , high ■ Features frequency PFM control DC-DC boost converter.  Maximum efficiency: 94% TCS3187B series requires only three external components,  Maximum operating frequency: 300KHz the device can change the low voltage input of battery  Low Quiescent Current: 8μA step-up into output voltages for electronic devices.  Output Voltage: 1.8V ~ 5.0V (step 0.1V) ■ Applications  Output Accuracy: ± 2.5%  Input voltage: 0.9V ~ 6.5V  1 to 3 batteries of electronic equipment  low ripple and low noise  Electronic dictionaries, digital cameras  Small volume  LED flashlights, LED Light,  ■ Package Blood pressure monitors, MP3, remote control toys,  Wireless headsets,wireless mouse, keyboard  Medical devices, anti-lost alarm,  Car alarm,charger,VCR,PDA and other handheld  SOT-23-5L electronic devices ■ Typical Application Circuit ■ Pin Assignment L VIN 10uH LX VOUT VIN N CIN 10uF CE 5 4 LX VOUT VOUT COUT 22uF GND GND CE GND VIN 1 2 3 GND Note: CIN=10µF, COUT=22 µF, L=10uH. SOT-23-5L (TOP VIEW) ■ Ordering Information Description product model TCS3187B_E30 VOUT =3.0V : Package: SOT23-5 TCS3187B_E33 VOUT =3.3V: Package: SOT23-5 TCS3187B_E50 VOUT =5.0V: Package: SOT23-5 Ｎｏｔｅ：　Ｅ　：　Ｒｅｐｒｅｓｅｎｔｓ　　　ＳＯＴ２３－５　　Ｐａｃｋａｇｅ；３０　：Ｒｅｐｒｅｓｅｎｔｓ　Ｏｕｔｐｕｔ　Ｖｏｌｔａｇｅ　３．０Ｖ Ver.1.0 May.20,2021 Page 1 TCS3187B Ｓｙｎｃｈｒｏｎｏｕｓ　ＤＣ－ＤＣ　Ｂｏｏｓｔ　Ｃｏｎｖｅｒｔｅｒ　Ｗｉｔｈ　Ｗｈｏｌｌｙ　Ｓｈｕｔｄｏｗｎ ■ Functional Pin Description Pin Number Pin Name Function Description 1 CE Chip enable pin 2 GND Ground 3 VIN Power 4 VOUT Output pin 5 LX Switch pin SOT-23-5 L ■ Function Block Diagram LX VOUT VIN 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 forVin, VOUT and VLX pin 6.5 V Maximum current in LX pin 1000 mA SOT-23-5L maximum power dissipation 350 mW ILXmax PD Tmin-max Temperature Tstorage ESD VESD Operating Ambient Temperature -40—85 Storage Temperature -40—165 °C Body static pressure values Ver.1.0 May.20,2021 2000 Page 2 V TCS3187B Ｓｙｎｃｈｒｏｎｏｕｓ　ＤＣ－ＤＣ　Ｂｏｏｓｔ　Ｃｏｎｖｅｒｔｅｒ　Ｗｉｔｈ　Ｗｈｏｌｌｙ　Ｓｈｕｔｄｏｗｎ ■ Electrical Characteristics (TA=25℃ unless otherwise noted) 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 TJ=25℃, IL=0mA, VOUT=3.3V 28 800 Output Current Limit (mA) Active Current (uA) 32 24 20 16 12 8 700 600 400 300 200 4 0 1.2 TJ=25℃，VOUT=3.3V 500 100 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 30 Input Voltage (V) 60 90 120 150 180 210 Output Current (mA) Ver.1.0 May.20,2021 Page 3 240 270 300 TCS3187B Ｓｙｎｃｈｒｏｎｏｕｓ　ＤＣ－ＤＣ　Ｂｏｏｓｔ　Ｃｏｎｖｅｒｔｅｒ　Ｗｉｔｈ　Ｗｈｏｌｌｙ　Ｓｈｕｔｄｏｗｎ 5. 6. Efficiency VS Output Current 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 80 100 120 90 VOUT=2.3V, LX=300Ω to VOUT 80 70 60 50 -40 -20 Temperature (℃) 0 20 40 60 Temperature (℃) Ver.1.0 May.20,2021 Page 4 80 100 120 TCS3187B Ｓｙｎｃｈｒｏｎｏｕｓ　ＤＣ－ＤＣ　Ｂｏｏｓｔ　Ｃｏｎｖｅｒｔｅｒ　Ｗｉｔｈ　Ｗｈｏｌｌｙ　Ｓｈｕｔｄｏｗｎ 12. Load Regulation VS Temperature 11. Output Voltage VS Temperature Output Voltage VS Temperature Load Regulation VS Temperature 3.40 90 80 3.35 3.30 Load Regulation (mV) Output Voltage (V) 70 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 80 100 120 0 -40 -20 13. CE high Voltage VS 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 0 20 40 60 Temperature (℃) Temperature (℃) 80 100 120 Temperature (℃) Ver.1.0 May.20,2021 Page 5 80 100 120 TCS3187B Ｓｙｎｃｈｒｏｎｏｕｓ　ＤＣ－ＤＣ　Ｂｏｏｓｔ　Ｃｏｎｖｅｒｔｅｒ　Ｗｉｔｈ　Ｗｈｏｌｌｙ　Ｓｈｕｔｄｏｗｎ Package Information  SOT23-5L Ver.1.0 May.20,2021 Page 6