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| Part Number | LT3478IFE#PBF | LT3474IFE#PBF | LT3475IFE#PBF | LT3477IFE#PBF | LT3478EFE#PBF |
|---|---|---|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. |
| Product Status | Active | Active | Active | Active | Active |
| Type | DC DC Regulator | DC DC Regulator | DC DC Regulator | DC DC Regulator | DC DC Regulator |
| Topology | Step-Down (Buck), Step-Up (Boost) | Step-Down (Buck) | Step-Down (Buck) | Flyback, SEPIC, Step-Down (Buck), Step-Up (Boost) | Step-Down (Buck), Step-Up (Boost) |
| Internal Switch(s) | Yes | Yes | Yes | Yes | Yes |
| Number of Outputs | 1 | 1 | 2 | 1 | 1 |
| Voltage - Supply (Min) | 2.8V | 3.5V | 3.7V | 2.5V | 2.8V |
| Voltage - Supply (Max) | 36V | 36V | 36V | 25V | 36V |
| Voltage - Output | 42V | - | - | - | 42V |
| Current - Output / Channel | 4.5A (Switch) | 1A | 1.5A | 3A (Switch) | 4.5A (Switch) |
| Frequency | 200kHz ~ 2.25MHz | 200kHz ~ 2MHz | 200kHz ~ 2MHz | 200kHz ~ 3.5MHz | 200kHz ~ 2.25MHz |
| Dimming | PWM | PWM | PWM | PWM | PWM |
| Applications | Backlight | Automotive, Backlight | Automotive, Backlight, Lighting | - | Backlight |
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 16-TSSOP (0.173", 4.40mm Width) Exposed Pad | 16-TSSOP (0.173", 4.40mm Width) Exposed Pad | 20-TSSOP (0.173", 4.40mm Width) Exposed Pad | 20-TSSOP (0.173", 4.40mm Width) Exposed Pad | 16-TSSOP (0.173", 4.40mm Width) Exposed Pad |
| Supplier Device Package | 16-TSSOP-EP | 16-TSSOP-EP | 20-TSSOP-EP | 20-TSSOP-EP | 16-TSSOP-EP |
