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| Part Number | LM3421MHX/NOPB | LM3429MHX/NOPB | LM3424MHX/NOPB | LM3423MHX/NOPB | LM3431MHX/NOPB | LM3421MH/NOPB |
|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Status | Active | Active | Active | Active | Active | Active |
| Type | DC DC Controller | DC DC Controller | DC DC Controller | DC DC Controller | DC DC Controller | DC DC Controller |
| Topology | SEPIC, Step-Down (Buck), Step-Up (Boost) | SEPIC, Step-Down (Buck), Step-Up (Boost) | Flyback, SEPIC, Step-Down (Buck), Step-Up (Boost) | SEPIC, Step-Down (Buck), Step-Up (Boost) | Step-Up (Boost) | SEPIC, Step-Down (Buck), Step-Up (Boost) |
| Internal Switch(s) | No | No | No | No | No | No |
| Number of Outputs | 1 | 1 | 1 | 1 | 3 | 1 |
| Voltage - Supply (Min) | 4.5V | 4.5V | 4.5V | 4.5V | 4.5V | 4.5V |
| Voltage - Supply (Max) | 75V | 75V | 75V | 75V | 36V | 75V |
| Voltage - Output | 3V ~ 72V | - | - | - | - | 3V ~ 72V |
| Current - Output / Channel | - | - | - | - | - | - |
| Frequency | 2MHz | 2MHz | 2MHz | 2MHz | 1MHz | 2MHz |
| Dimming | Analog, PWM | Analog, PWM | Analog, PWM | Analog, PWM | Analog, PWM | Analog, PWM |
| Applications | - | Automotive | - | - | Backlight | - |
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 16-PowerTSSOP (0.173", 4.40mm Width) | 14-TSSOP (0.173", 4.40mm Width) Exposed Pad | 20-PowerTSSOP (0.173", 4.40mm Width) | 20-PowerTSSOP (0.173", 4.40mm Width) | 28-PowerTSSOP (0.173", 4.40mm Width) | 16-PowerTSSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 16-HTSSOP | 14-HTSSOP | 20-HTSSOP | 20-HTSSOP | 28-HTSSOP | 16-HTSSOP |
