TI LM36923HYFFR DC DC Regulator, Step-Up (Boost) topology, 3 outputs 25mA each, 38V output, I²C and PWM dimming, 500kHz/1MHz switching, 12-DSBGA package, -40°C to 85°C.
| Parameter | Value |
|---|---|
| Type | DC DC Regulator |
| Mounting | Surface Mount |
| Voltage - output | 38V |
| Supply voltage | 5.5V |
| Current - output (Channel) | 25mA |
| Frequency | 500kHz, 1MHz |
| I/O channels | 3 |
| Operating temperature | -40°C ~ 85°C (TA) |
| Dimming | I²C, PWM |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Topology | Step-Up (Boost) |
| Applications | Backlight |
| Case | 12-UFBGA, DSBGA |
| Internal switch | Yes |
The TI LM36923HYFFR is a DC DC boost regulator for LED backlight applications. It integrates three constant-current outputs each rated for 25 mA, with a maximum output voltage of 38 V. Dimming is handled through I²C or PWM input. The part switches at 500 kHz or 1 MHz.
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The LM2703MF-ADJ/NOPB is a DC DC boost regulator from TI, but it is a single-output part rated for 0.35 A with an adjustable output voltage, not a fixed 25 mA per channel LED driver. It is not a pin-compatible or direct functional replacement for the LM36923HYFFR's three-channel backlight application.
Yes. The supply voltage range is 2.5 V to 5.5 V, so a 3.3 V logic rail is within spec. The I²C interface is designed to operate at those levels.