This document describes the features and technical specifications of the ADP2164 high-efficiency step-down DC-to-DC regulator, including 4A continuous output current, integrated FETs with low resistance, ±1.5% output accuracy, input voltage range of 2.7V to 6.5V, output voltage range of 0.6V to VIN, selectable fixed or adjustable switching frequency, synchronization capability, precision enable input, power-good output, voltage tracking input, integrated soft start, internal compensation, and various protection features.
The ADP2164 is a 4 A, synchronous, step-down DC-to-DC regulator available in a compact 4 mm x 4 mm LFCSP package. It utilizes a current mode, constant frequency pulse-width modulation (PWM) control scheme for excellent stability and transient response. The device integrates a pair of low on-resistance P-channel and N-channel internal MOSFETs to maximize efficiency and minimize external component count.
Key features include a 4 A continuous output current, input voltage range from 2.7 V to 6.5 V, and output voltage adjustable from 0.6 V to Vin. The regulator supports switching frequencies of 600 kHz or 1.2 MHz, with an adjustable range from 500 kHz to 1.4 MHz. It includes protection features such as undervoltage lockout (UVLO), overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown.
| Continuous Output Current | 4 A |
|---|---|
| Input Voltage Range | 2.7 V to 6.5 V |
| Output Voltage Range | 0.6 V to Vin |
| Switching Frequency (Fixed) | 600 kHz or 1.2 MHz |
| Switching Frequency (Adjustable) | 500 kHz to 1.4 MHz |
| Package Type | 16-lead, 4 mm x 4 mm LFCSP |
| Operating Junction Temperature | -40°C to +125°C |
| Thermal Shutdown Threshold | 140°C |
The output voltage accuracy is specified as +1.5%.
Yes, it is synchronizable from 500 kHz to 1.4 MHz with selectable phase shift of 0° or 180°.
The device is available in six preset output voltage options: 3.3 V, 2.5 V, 1.8 V, 1.5 V, 1.2 V, and 1.0 V.