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LTC3114-1 Arkusz danych(PDF) 30 Page - Analog Devices |
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LTC3114-1 Arkusz danych(HTML) 30 Page - Analog Devices |
30 / 34 page LTC3114-1 30 Rev. D For more information www.analog.com Constant Current/Constant Voltage Lead-Acid Battery Charger 6.8µH SW1 SW2 GND PGND BST1 68nF D1 4.7µF 10nF 56.2k 164k NTC: VISHAY NTCS0603E3683 HT 68k NOMINAL AT 25°C INDUCTOR: COILCRAFT MSS1048-682NL D1: ON SEMI MBRS260T3G TEMPERATURE COMPENSATION 1A CONSTANT CHARGING CURRENT WHEN BELOW FLOAT LEVEL 220k NTC 68k 31141 TA04a 2M 24.9k 33nF 68nF BST2 VIN PVOUT PVIN LDO PLDO FB RUN 10µF VIN 2.7V TO 40V VC PROG MODE 44µF 6-CELL LEAD-ACID BATTERY LTC3114-1 + –30°C 0°C 25°C 50°C 14.5V 14.03V 13.8V 13.48V VBATT FLOAT LEVEL TYPICAL APPLICATIONS Constant Current High Brightness LED Driver Efficiency vs Input Voltage, 350mA Drive Current 15µH SW1 SW2 GND PGND BST1 68nF D1 4.7µF 0.47µF 31.6k 71.5k 31141 TA05a 1M R1 71.5k 3.3nF 68nF BST2 VIN PVOUT PVIN LDO PLDO FB RUN 10µF VIN 9V TO 40V 500mA: R1 = 49.9k 350mA: R1 = 71.5k ADJUST R1 FOR DIMMING VC PROG MODE 44µF CONSTANT CURRENT DOWN TO 2V VOLTAGE DIVIDER LIMITS VOUT TO 15V IN CASE OF OPEN LED 500mA CONSTANT CURRENT, VIN > 11V 350mA CONSTANT CURRENT, VIN > 9V LTC3114-1 INDUCTOR: WURTH 744 066 150 D1: ON SEMI MBRS260T3G INPUT VOLTAGE (V) 8 85 86 88 89 90 95 92 16 24 28 31141 TA05b 87 93 94 91 12 20 32 36 40 |
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