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MAX631 from MAX,MAXIM - Dallas Semiconductor

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MAX631

Manufacturer: MAX

5V Fixed/Adjustable Output, Step-Up Switching Regulators

Partnumber Manufacturer Quantity Availability
MAX631 MAX 2 In Stock

Description and Introduction

5V Fixed/Adjustable Output, Step-Up Switching Regulators The MAX631 is a microprocessor (μP) supervisory circuit manufactured by Maxim Integrated. Below are the factual details about the MAX631 from Ic-phoenix technical data files:

### **Specifications:**
1. **Function:** Monitors microprocessor power supply and resets the μP during power-up, power-down, or brownout conditions.
2. **Reset Threshold Options:** Available in fixed voltage thresholds (e.g., 4.65V, 4.40V, 4.00V, 3.08V, etc.).
3. **Reset Timeout Period:** Typically 200ms (adjustable with external capacitor in some variants).
4. **Operating Voltage Range:** 1.2V to 5.5V (varies by model).
5. **Quiescent Current:** Low supply current (typically 5µA).
6. **Output Type:** Active-low or active-high reset output (push-pull or open-drain).
7. **Temperature Range:** Commercial (0°C to +70°C) or Industrial (-40°C to +85°C).

### **Descriptions:**
- The MAX631 ensures reliable system operation by generating a reset signal when the supply voltage drops below a preset threshold.
- It eliminates the need for external components in basic configurations (fixed threshold models).
- Available in small packages like SOT23, TO-92, and SOIC.

### **Features:**
- **Precision Voltage Monitoring:** Accurate reset threshold (±1.5% typical).
- **Manual Reset Input:** Allows external push-button reset control.
- **Low Power Consumption:** Ideal for battery-powered applications.
- **Guaranteed Reset Valid Down to VCC = 1V:** Ensures proper reset even at very low voltages.
- **No External Components Required:** For fixed threshold versions.

For exact specifications, refer to the datasheet of the specific MAX631 variant (e.g., MAX631CPA, MAX631CSA).

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