BD9739KN, BD9740KN are 7-channel switching regulators with built-in FETs designed for use in digital still cameras. Their features include wide supply voltage range, high-precision reference voltage, selectable step-up/step-down mode, built-in load switch circuit, support for inverting circuit, support for constant-current LED drive etc.
The ROHM BD9740KN is a 1‑channel switching regulator IC designed for digital cameras, portable DVD players and video cameras. It integrates a built‑in FET, soft‑start, shutdown and thermal protection, reducing external component count.
The document provides detailed electrical characteristics, absolute maximum ratings, pin descriptions, recommended operating ranges, and example application circuits for step‑up, step‑down and inverting modes.
| Input voltage range | 1.5 V to 10 V |
|---|---|
| Reference voltage precision | +1 % |
| Standby mode current | 0 pA |
| Operating temperature range | -20 °C to +85 °C |
| Oscillator frequency range | 100 kHz to 1.2 MHz |
The recommended supply voltage is 1.5 V to 10 V.
The standby mode current is 0 pA.