Overview
The ADP2102YCPZ-1.87R7 is a synchronous step-down DC-DC converter produced by Analog Devices Inc. This device is designed to convert an unregulated input voltage ranging from 2.7 V to 5.5 V into a lower regulated output voltage with high efficiency and accuracy. The ADP2102 features a constant on-time current-mode control architecture with voltage feed forward, allowing for the generation of very low output voltages at high switching frequencies. This architecture also enables a fast load and line transient response with minimal external component count and size.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.7 to 5.5 | V |
| Output Voltage | 1.875 | V |
| Output Current | 0.6 | A |
| Switching Frequency | 3 | MHz |
| Efficiency | Up to 95% | % |
| Package Type | 8-lead, 3 mm × 3 mm LFCSP | |
| Thermal Shutdown Threshold | 150 | °C |
| Thermal Shutdown Hysteresis | 15 | °C |
| Enable/Mode Input High Threshold | 1.3 | V |
| Enable/Mode Input Low Threshold | 0.4 | V |
Key Features
- Constant on-time current-mode control architecture with voltage feed forward
- High efficiency up to 95%
- Fast load and line transient response
- Internal synchronous rectifier and soft start
- Undervoltage lockout, thermal shutdown, and short-circuit protection
- Forced continuous conduction mode (CCM) and power save mode (PSM)
- Low duty cycle capability ideal for USB applications and 5 V systems
- Small 8-lead, 3 mm × 3 mm LFCSP package
Applications
- USB powered devices
- WLAN and gateways
- Point of loads
- Processor core power from 5 V
- Digital cameras
- PDAs and palmtop computers
- Portable media players and GPS devices
Q & A
- What is the input voltage range of the ADP2102YCPZ-1.87R7?
The input voltage range is from 2.7 V to 5.5 V.
- What is the typical switching frequency of the ADP2102YCPZ-1.87R7?
The typical switching frequency is 3 MHz.
- What are the key protection features of the ADP2102YCPZ-1.87R7?
The key protection features include undervoltage lockout, thermal shutdown, and short-circuit protection.
- What are the operating modes of the ADP2102YCPZ-1.87R7?
The device operates in forced continuous conduction mode (CCM) and power save mode (PSM).
- What is the package type of the ADP2102YCPZ-1.87R7?
The package type is an 8-lead, 3 mm × 3 mm LFCSP.
- What is the thermal shutdown threshold of the ADP2102YCPZ-1.87R7?
The thermal shutdown threshold is 150°C.
- What are some typical applications of the ADP2102YCPZ-1.87R7?
Typical applications include USB powered devices, WLAN and gateways, point of loads, and portable media players.
- What is the output voltage of the ADP2102YCPZ-1.87R7?
The output voltage is 1.875 V.
- What is the maximum output current of the ADP2102YCPZ-1.87R7?
The maximum output current is 0.6 A.
- Is the ADP2102YCPZ-1.87R7 still in production?
No, the ADP2102YCPZ-1.87R7 is no longer manufactured.
