Datasheet LT3761, LT3761-1 (Analog Devices) - 10
| 制造商 | Analog Devices |
| 描述 | 60VIN LED Controller with Internal PWM Generator |
| 页数 / 页 | 32 / 10 — block Diagram |
| 文件格式/大小 | PDF / 593 Kb |
| 文件语言 | 英语 |
block Diagram
该数据表的模型线
文件文字版本
LT3761/LT3761-1
block Diagram
PWMOUT VIN 185µA – FB VREF + 1.3V – LDO OVFB 1.25V – A8 COMPARATOR + A7 7.85V INTVCC + 2.02V 0.8V + F3(IDIM/SS) – + F1(IDIM/SS) PWM – S PWMINT 0.8V F2(I + R Q DIM/SS) PWM LATCH + GATE 1.5mA 100mV CTRL –A2 R Q DRIVER CTRL S + – BUFFER 10µA FAULT ×1/4 1V + 105mV CLAMP A3 ILED – ISP + – – A1 ISWITCH CURRENT MODE 10µA AT SENSE gm COMPARATOR A1+ = A1– + RLED + A4 ISN – R CC EAMP ISENSE SNS GND RAMP 1.25V + A5 GENERATOR g 10µA AT FB – m FB = 1.25V IDIM_SS 100kHz TO 1MHz OPENLED CV EAMP DETECT OSCILLATOR VC OPENLED 1V + PWMINT + LOGIC EN/UVLO – A6 – 25mV FREQ – + + SHDN + OPTION FOR PROG ISN 1.22V LT3761 FAULT ISP – 2.3µA 12µA – 1.2V + ISP > ISN + 0.6V BANDGAP FAULT + REFERENCE T > 165°C LOGIC FB – OPTION FOR DIM/SS RT SYNC LT3761-1 37611 BD 37611fb 10 For more information www.linear.com/LT3761 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
block Diagram
PWMOUT VIN 185µA – FB VREF + 1.3V – LDO OVFB 1.25V – A8 COMPARATOR + A7 7.85V INTVCC + 2.02V 0.8V + F3(IDIM/SS) – + F1(IDIM/SS) PWM – S PWMINT 0.8V F2(I + R Q DIM/SS) PWM LATCH + GATE 1.5mA 100mV CTRL –A2 R Q DRIVER CTRL S + – BUFFER 10µA FAULT ×1/4 1V + 105mV CLAMP A3 ILED – ISP + – – A1 ISWITCH CURRENT MODE 10µA AT SENSE gm COMPARATOR A1+ = A1– + RLED + A4 ISN – R CC EAMP ISENSE SNS GND RAMP 1.25V + A5 GENERATOR g 10µA AT FB – m FB = 1.25V IDIM_SS 100kHz TO 1MHz OPENLED CV EAMP DETECT OSCILLATOR VC OPENLED 1V + PWMINT + LOGIC EN/UVLO – A6 – 25mV FREQ – + + SHDN + OPTION FOR PROG ISN 1.22V LT3761 FAULT ISP – 2.3µA 12µA – 1.2V + ISP > ISN + 0.6V BANDGAP FAULT + REFERENCE T > 165°C LOGIC FB – OPTION FOR DIM/SS RT SYNC LT3761-1 37611 BD 37611fb 10 For more information www.linear.com/LT3761 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts