Overview
The MAX40203AUK+T, produced by Analog Devices Inc./Maxim Integrated, is an ultra-tiny nanoPower, 1A ideal diode current-switch. This device is designed to mimic a near-ideal diode, offering a forward voltage drop that is significantly lower than traditional Schottky diodes. With a voltage drop of approximately 90mV when conducting up to 1A, it is particularly suited for low-voltage, portable electronic devices. The MAX40203 operates from a supply voltage of 1.2V to 5.5V and features an active-high enable input, thermal protection, and current limiting capabilities.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SOT23-5 |
| Operating Temperature Range | -40°C to +125°C |
| Junction Temperature | +150°C |
| Supply Voltage Range | 1.2V to 5.5V |
| Forward Voltage Drop | Approximately 90mV |
| Maximum Continuous Current | 1A (SOT), 1.5A (WLP) |
| Enable Input Type | Active-High with Weak Internal Pullup |
| Thermal Protection | Self-protecting against overcurrent conditions |
| Power Dissipation (TA = +70°C) | 312.60mW (SOT), 766mW (WLP) |
Key Features
- Ultra-low forward voltage drop of approximately 90mV, significantly lower than Schottky diodes.
- Operates from a supply voltage of 1.2V to 5.5V.
- Active-high enable input with a weak internal pullup.
- Thermal protection to prevent overcurrent conditions.
- Current limiting up to 2A during short-circuit or fast power-up.
- Available in tiny 0.77mm x 0.77mm, 4-bump WLP and 5-pin SOT23 packages.
- Low supply current of typically 300nA.
- Blocks reverse voltages and passes current when forward biased.
Applications
- Cable drop compensation.
- Current limit switches.
- Digital power system management.
- Energy monitors.
- High-side switches and MOSFET drivers.
- Hot swap controllers.
- Ideal diode bridges.
- PowerPath, ideal diodes, and load switches.
- Power-over-Ethernet (PoE) interface controllers.
- Low-voltage, portable electronic devices.
Q & A
- What is the forward voltage drop of the MAX40203AUK+T? The forward voltage drop is approximately 90mV when conducting up to 1A.
- What is the operating temperature range of the MAX40203AUK+T? The operating temperature range is -40°C to +125°C.
- What are the available package types for the MAX40203AUK+T? The device is available in a 5-pin SOT23 package and a 4-bump WLP package.
- How does the enable input work on the MAX40203AUK+T? The enable input is active-high with a weak internal pullup. It must be turned on after the supply voltage (VDD) is ready.
- What is the maximum continuous current for the MAX40203AUK+T? The maximum continuous current is 1A for the SOT package and 1.5A for the WLP package.
- Does the MAX40203AUK+T have thermal protection? Yes, the device thermally protects itself and any downstream circuitry from overcurrent conditions.
- What is the supply voltage range for the MAX40203AUK+T? The supply voltage range is from 1.2V to 5.5V.
- How much power does the MAX40203AUK+T typically consume? The supply current is typically 300nA.
- What are some common applications for the MAX40203AUK+T? Common applications include cable drop compensation, current limit switches, digital power system management, and low-voltage portable electronic devices.
- Is the MAX40203AUK+T RoHS-compliant? Yes, the MAX40203AUK+T is RoHS-compliant.
