Overview
The MAX1630 series, which includes the MAX1630-MAX1635, are advanced buck-topology, step-down, switch-mode power-supply controllers designed by Analog Devices Inc./Maxim Integrated. These devices are optimized for generating logic-supply voltages in battery-powered systems, making them highly suitable for various mobile and computing applications. They offer high efficiency, adjustable output voltages, and multiple protection features, ensuring reliable and efficient power management.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Input Voltage Range | 4.2V to 30V | V |
| Output Voltage Range | 2.5V to 5.5V (adjustable), 3.3V and 5V (fixed) | V |
| Output Current | Up to 3A (main PWM outputs), 120mA (12V linear regulator) | A |
| Efficiency | Up to 96% | % |
| Operating Frequency | 200kHz/300kHz | kHz |
| Quiescent Power | 2.5mW (typical, +12V input, both SMPSs on) | mW |
| Shutdown Current | 4µA (typical) | µA |
| Package | 28-Pin SSOP | |
| Operating Temperature Range | 0°C to +70°C (MAX163_CAI), -40°C to +85°C (MAX163_EAI) | °C |
Key Features
- High efficiency up to 96%
- Wide input voltage range: +4.2V to +30V
- Dual adjustable outputs: 2.5V to 5.5V, with fixed 3.3V and 5V modes
- 12V linear regulator (up to 120mA)
- Adjustable secondary feedback (MAX1631/MAX1634)
- 5V/50mA linear regulator output
- Precision 2.5V reference output
- Programmable power-up sequencing
- Power-good monitor (active-low RESET output)
- Output overvoltage protection and undervoltage shutdown
- Low-noise, fixed-frequency operation (200kHz/300kHz)
- Low-dropout, 99% duty-factor operation
- Low quiescent power and shutdown current
- Oscillator sync input and low-noise mode control
Applications
- Desktop CPU local DC-DC converters
- Notebook and subnotebook computers
- PDAs and mobile communicators
Q & A
- What is the input voltage range of the MAX1630 series?
The input voltage range is from +4.2V to +30V.
- What are the adjustable output voltage ranges for the MAX1630 series?
The output voltages are adjustable from 2.5V to 5.5V, with fixed modes for 3.3V and 5V.
- What is the maximum output current for the main PWM outputs?
The maximum output current for the main PWM outputs is up to 3A.
- What is the efficiency of the MAX1630 series?
The efficiency can be up to 96%.
- What are the operating frequencies of the MAX1630 series?
The operating frequencies are 200kHz and 300kHz.
- What is the typical quiescent power consumption of the MAX1630 series?
The typical quiescent power consumption is 2.5mW (+12V input, both SMPSs on).
- What is the typical shutdown current of the MAX1630 series?
The typical shutdown current is 4µA.
- What package type is used for the MAX1630 series?
The devices are packaged in a 28-Pin SSOP.
- What are the operating temperature ranges for the MAX1630 series?
The operating temperature ranges are 0°C to +70°C (MAX163_CAI) and -40°C to +85°C (MAX163_EAI).
- What protection features are included in the MAX1630 series?
The devices include output overvoltage protection and undervoltage shutdown.
