Overview
The NCP1522BMUTBG is a monolithic integrated circuit step-down DC-DC converter produced by onsemi. This device is optimized for portable applications powered from one cell Li-Ion or three cell Alkaline/NiCd/NiMH batteries. It is available in adjustable output voltage versions ranging from 0.9 V to 3.3 V and can deliver up to 600 mA. The NCP1522B features synchronous rectification, which increases efficiency and reduces the external component count. It also includes a built-in 3 MHz oscillator, allowing for smaller inductors and capacitors, and automatic switching between PWM and PFM modes to improve system efficiency.
Key Specifications
| Parameter | Value |
|---|---|
| Output Voltage Range | 0.9 V to 3.3 V |
| Maximum Output Current | 600 mA |
| Switching Frequency | 3 MHz (nominal) |
| Efficiency | Up to 93% |
| Package Types | TSOP-5, UDFN6 |
| Input Voltage Range | 2.7 V to 5.2 V |
| Thermal Shutdown Temperature | 160°C |
| Enable Pin Threshold | Active HIGH, shutdown below 0.4 V |
| Quiescent Current in Shutdown | 0.3 µA (typical) |
Key Features
- Synchronous rectification for increased efficiency and reduced external component count
- Automatic switching between PWM and PFM modes for improved system efficiency
- Integrated soft-start to limit inrush current during startup
- Cycle-by-cycle current limiting and thermal shutdown protection
- Low dropout operation with 100% duty cycle capability
- Undervoltage lockout (UVLO) and short circuit protection
- Compact TSOP-5 and UDFN6 packages for space-saving designs
Applications
The NCP1522BMUTBG is suitable for a variety of portable and battery-powered applications, including handheld devices, mobile phones, and other compact electronic systems. Its high efficiency, low quiescent current, and compact packaging make it an ideal choice for designs where space and power efficiency are critical.
Q & A
- What is the output voltage range of the NCP1522BMUTBG?
The output voltage range is from 0.9 V to 3.3 V. - What is the maximum output current of the NCP1522BMUTBG?
The maximum output current is 600 mA. - What is the switching frequency of the NCP1522BMUTBG?
The switching frequency is 3 MHz (nominal). - How efficient is the NCP1522BMUTBG?
The efficiency can be up to 93%. - What are the package types available for the NCP1522BMUTBG?
The package types are TSOP-5 and UDFN6. - What is the input voltage range for the NCP1522BMUTBG?
The input voltage range is from 2.7 V to 5.2 V. - What is the thermal shutdown temperature of the NCP1522BMUTBG?
The thermal shutdown temperature is 160°C. - How does the enable pin work on the NCP1522BMUTBG?
The enable pin is active HIGH and the device shuts down when the pin is below 0.4 V. - What is the quiescent current in shutdown mode for the NCP1522BMUTBG?
The quiescent current in shutdown mode is 0.3 µA (typical). - What protection features does the NCP1522BMUTBG have?
The device includes cycle-by-cycle current limiting, thermal shutdown protection, undervoltage lockout, and short circuit protection.
