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LM3509 데이터시트(PDF) 11 Page - Texas Instruments |
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LM3509 데이터시트(HTML) 11 Page - Texas Instruments |
11 / 30 page LM3509 www.ti.com SNVS495D – FEBRUARY 2007 – REVISED MAY 2013 Typical Performance Characteristics (continued) VIN = 3.6V, LEDs are OSRAM (LW M67C), COUT = 1µF (LED Mode), COUT = 2.2µF (OLED Mode), CIN = 1µF, L = TDK VLF4012AT-100MR79, (RL = 0.3Ω), RSET = 8.06kΩ, UNI = '1', ILED = ISUB + IMAIN, TA = +25°C unless otherwise specified. Start-Up Waveform (LED Mode) Start-Up Waveform (OLED Mode) (2 × 5 LEDs, 30mA per string) (VOUT = 18V, IOUT = 60mA) Channel 1: SDA (5V/div) Channel 1: SDA (5V/div) Channel 2: VOUT (10V/div) Channel 2: VOUT (10V/div) Channel 3: ILED (50mA/div) Channel 3: IOUT (50mA/div) Channel 4: IIN (500mA/div) Channel 4: IIN (500mA/div) Time Base: 400µs/div Time Base: 400µs/div Figure 27. Figure 28. Load Step (OLED Mode) Line Step (LED Mode) (VOUT = 18V, COUT = 2.2µF) (2 × 5 LEDs, 30mA per String, COUT = 1µF) Channel 1: VOUT (AC Coupled, 500mV/div) Channel 1: VOUT (AC Coupled, 500mV/div) Channel 2: IOUT (20mA/div) Channel 2: VIN (AC Coupled, 500mV/div) Time Base: 200µs/div Time Base: 200µs/div Figure 29. Figure 30. Transition From OLED to OLED + 1 × 4 LED) (VOUT = 18V, IOUT = 40mA, ILED = 20mA, COUT = 2.2µF) RESET Functionality Channel 2: ISUB (20mA/div) Channel 3: SDA (2V/div) Channel R1: IMAIN (20mA/div) Channel 1: VOUT (AC Coupled, 200mV/div) Channel 1: RESET (2V/div) Channel 2: IMAIN (20mA/div) Time Base: 200ns/div Time Base: 400µs/div Figure 31. Figure 32. Copyright © 2007–2013, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: LM3509 |
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