Overview
The ADP2102YCPZ-1.37R7 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, which allows for the generation of very low output voltages at higher switching frequencies. This architecture also provides a fast load and line transient response with minimal external component count and size.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.7 V to 5.5 V |
| Output Voltage | 1.375 V (fixed) |
| Operating Frequency | Typical 3 MHz |
| Efficiency | Up to 95% |
| Output Voltage Accuracy | 1% |
| Shutdown Supply Current | 0.01 µA |
| Thermal Shutdown Threshold | 150 °C |
| Thermal Shutdown Hysteresis | 15 °C |
| Package Type | 8-Lead LFCSP |
| Operating Temperature Range | -40 °C to +85 °C |
Key Features
- Constant on-time current-mode control architecture with voltage feed forward
- Internal synchronous rectifier and soft start
- Undervoltage lockout, thermal shutdown, and short-circuit protection
- Valley current-mode control to prevent minimum on-time limitations
- Forced continuous conduction mode (CCM) and power save mode (PSM)
- Low duty cycle capability ideal for USB applications and 5 V systems
- Small, low-cost external components (e.g., 1 µH inductor, 2.2 µF ceramic capacitor)
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-1.37R7?
The input voltage range is from 2.7 V to 5.5 V. - What is the fixed output voltage of the ADP2102YCPZ-1.37R7?
The fixed output voltage is 1.375 V. - What is the typical operating frequency of the ADP2102YCPZ-1.37R7?
The typical operating frequency is 3 MHz. - What is the efficiency of the ADP2102YCPZ-1.37R7?
The efficiency is up to 95%. - What are the key protection features of the ADP2102YCPZ-1.37R7?
The key protection features include undervoltage lockout, thermal shutdown, and short-circuit protection. - What are the operating modes of the ADP2102YCPZ-1.37R7?
The device operates in forced continuous conduction mode (CCM) and power save mode (PSM). - What type of control architecture does the ADP2102YCPZ-1.37R7 use?
The device uses a constant on-time current-mode control architecture with voltage feed forward. - What is the thermal shutdown threshold of the ADP2102YCPZ-1.37R7?
The thermal shutdown threshold is 150 °C. - What is the package type of the ADP2102YCPZ-1.37R7?
The package type is an 8-Lead LFCSP. - What are some typical applications of the ADP2102YCPZ-1.37R7?
Typical applications include USB powered devices, WLAN and gateways, point of loads, and portable media players.
