The ADP2118ACPZ-1.0-R7 is a low quiescent current, synchronous, step-down dc-to-dc regulator in a compact 4mm × 4mm LFCSP package. It uses a current mode, constant frequency pulse-width modulation (PWM) control scheme for excellent stability and transient response. Under light loads, the ADP2118ACPZ-1.0-R7 can be configured to operate in pulse frequency modulation (PFM) mode that reduces switching frequency to save power.
The ADP2118ACPZ-1.0-R7 runs from input voltages of 2.3 V to 5.5 V. The output voltage of the ADP2118ACPZ-R7 is adjustable from 0.6 V to input voltage (VIN), and the ADP2118ACPZ-x.x-R7 are available in preset output voltage options of 1.2 V and 3.3 V. The ADP2118ACPZ-1.0-R7 requires minimal external parts and provides a high efficiency solution with its integrated power switch, synchronous rectifier, and internal compensation. The IC draws less than 3 μA from the input source when it is disabled. Other key features include undervoltage lockout (UVLO), integrated soft start to limit inrush current at startup, overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown (TSD).
Feature
- 3 A continuous output current
- 75 mΩ and 40 mΩ integrated FET
- ±1.5% output accuracy
- Input voltage range from 2.3 V to 5.5 V
- Output voltage from 0.6 V to VIN
- 600 kHz or 1.2 MHz fixed switching frequency
- Synchronizable between 600 kHz and 1.4 MHz
- Selectable synchronize phase shift: 0° or 180°
- Selectable PWM or PFM mode operation
- Current mode architecture
- Precision enable input
- Power good output
- Voltage tracking input
- Integrated soft start
- Internal compensation
- Starts up into a precharged output
- UVLO, OVP, OCP, and thermal shutdown
- Available in 16-lead, 4 mm × 4 mm LFCSP package
- Supported by ADIsimPower design tool
Applications
- Point of load conversion
- Communications and networking equipments
- Industrial and instrumentation
- Consumer electronics
- Medical appliances
(Picture: Pinout)
