ADP2118
PRODUCTION3 A, 1.2 MHz/600 kHz High Efficiency Synchronous Step-Down DC-to-DC Regulator
- Part Models
- 3
- 1ku List Price
- Starting From $2.62
Overview
- 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
The ADP2118 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 ADP2118 can be configured to operate in pulse frequency modulation (PFM) mode that reduces switching frequency to save power.
The ADP2118 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 ADP2118 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).
APPLICATIONS
- Point of load conversion
- Communications and networking equipments
- Industrial and instrumentation
- Consumer electronics
- Medical appliances
Documentation
Data Sheet 1
Evaluation Design File 1
Video 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| ADP2118ACPZ-1.2-R7 | 16-Lead LFCSP (4mm x 4mm w/ EP) | ||
| ADP2118ACPZ-3.3-R7 | 16-Lead LFCSP (4mm x 4mm w/ EP) | ||
| ADP2118ACPZ-R7 | 16-Lead LFCSP (4mm x 4mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 25, 2025 - 25_0054 Gold wire to Copper wire Conversion (Notification) |
||
| ADP2118ACPZ-1.2-R7 | PRODUCTION | |
| ADP2118ACPZ-3.3-R7 | PRODUCTION | |
| ADP2118ACPZ-R7 | PRODUCTION | |
|
Oct 21, 2016 - 16_0248 Assembly Transfer of ADP2118 LFCSP Products to ASE Korea |
||
| ADP2118ACPZ-1.2-R7 | PRODUCTION | |
| ADP2118ACPZ-3.3-R7 | PRODUCTION | |
| ADP2118ACPZ-R7 | PRODUCTION | |
|
May 11, 2014 - 13_0231 Assembly Transfer of Select 4x4 and 5x5mm LFCSP Products to STATS ChipPAC China. |
||
| ADP2118ACPZ-1.2-R7 | PRODUCTION | |
| ADP2118ACPZ-3.3-R7 | PRODUCTION | |
| ADP2118ACPZ-R7 | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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LTspice
Models for the following parts are available in LTspice:
- ADP2118-1.0
- ADP2118-1.2
- ADP2118-1.5
- ADP2118-1.8
- ADP2118-2.5
- ADP2118-3.3
- ADP2118-ADJ
SIMPLIS Models 1
ADP21xx Buck Regulator Design Tool
Microsoft Excel download tool from ADIsimPower to generate a power supply design complete with a schematic, bill of materials, and performance specifications.
Open ToolLTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
ADP2118 Evaluation Board