Datasheet Analog Devices LT3763HFE#PBF — Даташит

LT3763
60V High Current
Step-Down LED Driver Controller
DESCRIPTION FEATURES n n n n n n n n n n Accurately Control Input and Output Current
3000:1 True Color PWM™ Dimming
±1.5% Voltage Regulation Accuracy
±6% Current Regulation Accuracy
6V to 60V Input Voltage Range
Wide Output Range Up to 55V 2V, VSS = VFBIN = 2V, VC = 1.2V SENSE+ Pin Current VSENSE+ = VSENSE– = 4V SENSE– Pin Current VSENSE +=V SENSE – = 4V, V CTRL1 = 1.5V mV –20 µA –40 µA Internal VCC Regulator (INTVCC Pin)
Regulation Voltage ILOAD = 10mA Current Limit VINTVCC = 0V l 4.8 5 5.2 V 60 mA 42 ns 44 ns 50 ns NMOS FET Driver
Non-Overlap Time TG to BG
Non-Overlap Time BG to TG
Minimum On-Time BG (Note 4) Minimum On-Time TG (Note 4) 55 ns Minimum Off-Time BG (Note 4) 140 ns High Side Driver Switch On-Resistance Gate Pull-Up Gate Pull-Down VCBOOST – VSW = 5V 2.2
1.3 Ω
Ω Low Side Driver Switch On-Resistance Gate Pull-Up Gate Pull-Down VINTVCC = 5V 2.2
1 Ω
Ω Switching Frequency RT = 40kΩ
RT = 221kΩ l 930
180 1000
200 1070
220 kHz
kHz Soft-Start
Charging Current 11 µA 750 nA Voltage Regulation Amplifier …

LT3763
60V High Current
Step-Down LED Driver Controller
Description Features n n n n n n n n n n Accurately Control Input and Output Current
3000:1 True Color PWMв„ў Dimming
В±1.5% Voltage Regulation Accuracy
В±6% Current Regulation Accuracy
6V to 60V Input Voltage Range
Wide Output Range Up to 55V 2V, VSS = VFBIN = 2V, VC = 1.2V SENSE+ Pin Current VSENSE+ = VSENSE– = 4V SENSE– Pin Current VSENSE +=V SENSE – = 4V, V CTRL1 = 1.5V mV –20 µA –40 µA Internal VCC Regulator (INTVCC Pin)
Regulation Voltage ILOAD = 10mA Current Limit VINTVCC = 0V l 4.8 5 5.2 V 60 mA 42 ns 44 ns 50 ns NMOS FET Driver
Non-Overlap Time TG to BG
Non-Overlap Time BG to TG
Minimum On-Time BG (Note 4) Minimum On-Time TG (Note 4) 55 ns Minimum Off-Time BG (Note 4) 140 ns High Side Driver Switch On-Resistance Gate Pull-Up Gate Pull-Down VCBOOST – VSW = 5V 2.2
1.3 О©
О© Low Side Driver Switch On-Resistance Gate Pull-Up Gate Pull-Down VINTVCC = 5V 2.2
1 О©
О© Switching Frequency RT = 40kО©
RT = 221kО© l 930
180 1000
200 1070
220 kHz
kHz Soft-Start
Charging Current 11 ВµA 750 nA Voltage Regulation Amplifier …