Allicdata Part #: | MAX77231EZL+T-ND |
Manufacturer Part#: |
MAX77231EZL+T |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Maxim Integrated |
Short Description: | IC REG BOOST 11.2V 10MA 9WLP |
More Detail: | Boost Switching Regulator IC Positive Fixed 11.2V ... |
DataSheet: | MAX77231EZL+T Datasheet/PDF |
Quantity: | 1000 |
Voltage - Input (Max): | 4.8V |
Supplier Device Package: | 9-WLP (1.24x1.24) |
Package / Case: | 9-XFBGA |
Mounting Type: | Surface Mount |
Operating Temperature: | -40°C ~ 85°C (TA) |
Synchronous Rectifier: | No |
Frequency - Switching: | -- |
Current - Output: | 10mA |
Voltage - Output (Max): | -- |
Voltage - Output (Min/Fixed): | 11.2V |
Series: | -- |
Voltage - Input (Min): | 2.75V |
Number of Outputs: | 1 |
Output Type: | Fixed |
Topology: | Boost |
Output Configuration: | Positive |
Function: | Step-Up |
Part Status: | Active |
Packaging: | Tape & Reel (TR) |
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The MAX77231EZL+T is a 2-channel DC/DC step-down voltage converter with a maximum output current rating at 5A each channel in a 1.1mm x 0.9mm, RoHS-compliant package. It is part of Maxim Integrated\'s family of high-performance, cost-effective switch-mode power management (PMIC) solutions.
The MAX77231EZL+T operates from a 4.2V to 5.5V input voltage range, and provides two integrated switching power N-Channel MOSFETs to generate two high current, regulated outputs. It utilizes its integrated control circuitry and internal synchronous rectifier architecture to deliver low ripple, high efficiency output voltage regulation up to 95%. Additionally, it features a high switching frequency allowing tiny chip-count, board space saving designs.
The wide operating range and high switching frequency of MAX77231EZL+T make it an ideal choice for automotive, portable device, and other electronic systems requiring multiple switched DC/DC supply rails.
Features
- Input Voltage Range: 4.2V to 5.5V
- Integrated N-Channel Power Switches: 5A max each
- Integrated Soft-Start Circuit
- Integrated Output Over-Voltage Protection (OVP)
- Programmable Flash Over-Current Protection (OCP) with Auto-Retry
- Output Voltage: 0.9V to 3.3V (90% efficiency)
- Package Type: 1.1mm x 0.9mm, RoHS compliant package
Working Principle
The MAX77231EZL+T consists of an internal high-side and low-side power switch, an internal oscillator, and a slew rate limiter. The high-side (positive voltage) power switch regulates the output voltage of the power supply by modulating the signal passed to the low-side (negative voltage) switch. The low-side switch acts as a constant current source to maintain the output voltage steady.
The MAX77231EZL+T employs a synchronous rectifier architecture that maximizes the efficiency of the DC/DC converter. In this mode, the high-side switch passes a signal to the low-side switch, which in turn passes a current to the output load. When the load current decreases, the low-side switch decreases its duty cycle and the output voltage decreases accordingly. Comparatively, when the load current increases, the low-side switch increases its duty cycle and the output voltage increases accordingly. This architecture results in low ripple, high efficiency output voltage regulation.
Conclusion
The MAX77231EZL+T is a powerful and cost-effective solution for applications requiring multiple switched DC/DC supply rails. It is designed with integrated power switches and synchronous rectifier architecture to provide low ripple, high efficiency output voltage regulation up to 95%. It is ideal for automotive, portable device, and other electronic systems.
The specific data is subject to PDF, and the above content is for reference
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