The MAX736, MAX737, MAX739, and MAX759 are CMOS inverting switch‑mode regulators with an internal power MOSFET. They deliver fixed negative outputs of –12 V, –15 V, and –5 V, while the MAX759 offers an adjustable output from 0 V to –15 V. These devices are designed for low‑noise, high‑efficiency operation in portable and on‑card applications.
Key features include a typical efficiency of 83 %, a 165 kHz current‑mode PWM oscillator, input voltage range of +4 V to +15 V, and shutdown current as low as 1 µA. The datasheet lists absolute maximum ratings, detailed electrical characteristics, pin configurations, and example application circuits for both bootstrapped and non‑bootstrapped modes.
| Output Power (MAX739) | 1.25 W (at +4.5 V input) |
|---|---|
| Quiescent Current (MAX739) | 1.7 mA typical |
| Shutdown Mode Current (MAX739) | 1 µA |
| Input Voltage Range | +4 V to +15 V |
| Oscillator Frequency | 165 kHz |
| Typical Efficiency | 83 % |
| Fixed Output Voltages | -12 V, -15 V, -5 V |
| Adjustable Output Range (MAX759) | 0 V to -15 V |
| Standby Supply Current (MAX739) | 100 pA |
The input voltage range is +4 V to +15 V.
They have a typical efficiency of 83 %.
The fixed‑frequency oscillator is trimmed to 165 kHz.
They provide -12 V, -15 V, and -5 V respectively.