The ADP1611 is a step-up dc-to-dc switching converter with an integrated 1.2 A, 0.23 Ω power switch capable of providing an output voltage as high as 20 V. With a package height of less than 1.1 mm, the ADP1611 is optimal for space-constrained applications such as portable devices or thin film transistor (TFT) liquid crystal displays (LCDs). It features adjustable output voltage, 3% output regulation accuracy, and adjustable soft start.
The ADP1611 is a compact step‑up DC‑DC switching converter that integrates a 1.2 A, 0.23 Ω power switch. It delivers output voltages up to 20 V, making it suitable for space‑constrained applications such as portable devices and TFT LCD bias supplies. The device operates in current‑mode PWM, offering fast transient response, adjustable soft‑start, and selectable switching frequencies of 700 kHz or 1.2 MHz.
The datasheet provides detailed specifications, pin configurations, typical performance curves, and application circuit examples. It also includes guidance on component selection, layout procedures, and ordering information for the MSOP‑8 package.
| Input Voltage (VIN) | 2.5 V – 5.5 V |
|---|---|
| Output Voltage (VOUT) range | up to 20 V |
| Switching Frequency | 700 kHz or 1.2 MHz (pin‑selectable) |
| Efficiency | up to 90 % |
| Maximum Output Current | 2 A (peak) |
The device offers two selectable PWM frequencies: 700 kHz for higher efficiency or 1.2 MHz for smaller external components.
The low‑level shutdown threshold (VIL) is 0.6 V and the high‑level threshold (VIH) is 2.2 V.
In shutdown the device draws as little as 10 nA from the input.
It is supplied in an 8‑lead MSOP (Mini‑Small Outline Package) with a height of less than 1.1 mm.