Overview
The ADP2140ACPZ1218R7, produced by Analog Devices Inc., is a highly integrated power management IC that combines a high-efficiency, low-quiescent current 600 mA step-down DC-DC converter with a 300 mA low-dropout (LDO) regulator. This device is designed to optimize power efficiency and minimize component count, making it ideal for portable and battery-powered applications. The ADP2140 features a proprietary high-speed current-mode, constant frequency, pulse-width modulation (PWM) control scheme, ensuring excellent stability and transient response. The device operates over a wide input voltage range of 2.3 V to 5.5 V and supports output voltages of 1.2 V and 1.8 V, respectively, for the LDO and buck regulators.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range (VIN1) | 2.3 | 5.5 | V | |
| Buck Output Accuracy (VOUT) | -1.5% | +1.5% | % | |
| Transient Load Regulation (VTR-LOAD) | 75 mV | mV | ||
| Transient Line Regulation (VTR-LINE) | 25 mV | mV | ||
| Output Current (IOUT) | 600 mA | mA | ||
| LDO Output Current | 300 mA | mA | ||
| Operating Temperature | -40°C | +125°C | °C | |
| Switching Frequency | 3 MHz | MHz | ||
| Package Type | 10-Lead LFCSP |
Key Features
- High-efficiency, low-quiescent current 600 mA step-down DC-DC converter
- 300 mA low-dropout (LDO) regulator
- Proprietary high-speed current-mode, constant frequency, pulse-width modulation (PWM) control scheme
- Low shutdown current: < 0.3 μA
- Low LDO dropout voltage: 110 mV @ 300 mA load
- High LDO power supply rejection ratio (PSRR): 65 dB @ 10 kHz at VOUT2 = 1.2 V
- Low noise LDO: 40 μV rms at VOUT2 = 1.2 V
- Initial accuracy: ±1%
- Current-limit and thermal overload protection
- Power-good indicator
- Optional enable sequencing
Applications
- Mobile phones
- Personal media players
- Digital cameras and audio devices
- Portable and battery-powered equipment
Q & A
- Q: What is the input voltage range of the ADP2140ACPZ1218R7?
A: The input voltage range is from 2.3 V to 5.5 V.
- Q: What are the output voltages and currents of the ADP2140ACPZ1218R7?
A: The buck regulator can output up to 600 mA at 1.2 V or 1.8 V, and the LDO regulator can output up to 300 mA at 1.2 V or 1.8 V.
- Q: What is the switching frequency of the ADP2140ACPZ1218R7?
A: The switching frequency is 3 MHz.
- Q: What is the operating temperature range of the ADP2140ACPZ1218R7?
A: The operating temperature range is from -40°C to +125°C.
- Q: What type of package does the ADP2140ACPZ1218R7 come in?
A: The device comes in a 10-lead LFCSP package.
- Q: What are some key features of the ADP2140ACPZ1218R7?
A: Key features include low quiescent current, high PSRR, low noise LDO, current-limit and thermal overload protection, and a power-good indicator.
- Q: What applications is the ADP2140ACPZ1218R7 suitable for?
A: It is suitable for mobile phones, personal media players, digital cameras and audio devices, and other portable and battery-powered equipment.
- Q: How does the ADP2140ACPZ1218R7 ensure power efficiency?
A: It uses a proprietary high-speed current-mode, constant frequency, PWM control scheme and a power-saving variable frequency mode to reduce power consumption.
- Q: Does the ADP2140ACPZ1218R7 have any protection features?
A: Yes, it includes current-limit and thermal overload protection.
- Q: How can I obtain detailed information about the ADP2140ACPZ1218R7?
A: You can find comprehensive details, including application notes and datasheets, on the Analog Devices Inc. website or through authorized distributors like Dasenic.
