MAX8545EUB+
ActiveDC/DC CONTROLLER, BUCK (STEP DOWN), 2.7 V TO 28 V, 1 OUTPUT, 360 KHZ, µMAX-10
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MAX8545EUB+
ActiveDC/DC CONTROLLER, BUCK (STEP DOWN), 2.7 V TO 28 V, 1 OUTPUT, 360 KHZ, µMAX-10
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Technical Specifications
Parameters and characteristics for this part
| Specification | MAX8545EUB+ |
|---|---|
| Clock Sync | False |
| Control Features | Enable |
| Duty Cycle (Max) [Max] | 86 % |
| Frequency - Switching | 300 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 85 C |
| Operating Temperature [Min] | -40 ¯C |
| Output Configuration | Positive |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package / Case | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) |
| Supplier Device Package | 10-uMAX/uSOP |
| Synchronous Rectifier | True |
| Topology | Buck |
| Voltage - Supply (Vcc/Vdd) [Max] | 28 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 2.7 V |
| Part | Synchronous Rectifier | Operating Temperature [Max] | Operating Temperature [Min] | Voltage - Supply (Vcc/Vdd) [Min] | Voltage - Supply (Vcc/Vdd) [Max] | Control Features | Output Phases | Function | Mounting Type | Package / Case | Number of Outputs | Duty Cycle (Max) [Max] | Output Type | Output Configuration | Topology | Supplier Device Package | Clock Sync | Frequency - Switching |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Analog Devices Inc./Maxim Integrated | 85 C | -40 ¯C | 2.7 V | 28 V | Enable | 1 | Step-Down | Surface Mount | 10-TFSOP 10-MSOP (0.118" 3.00mm Width) | 1 | 86 % | Transistor Driver | Positive | Buck | 10-uMAX/uSOP | 300 kHz | ||
 Analog Devices Inc./Maxim Integrated | 85 C | -40 ¯C | 2.7 V | 28 V | Enable | 1 | Step-Down | Surface Mount | 10-TFSOP 10-MSOP (0.118" 3.00mm Width) | 1 | 86 % | Transistor Driver | Positive | Buck | 10-uMAX/uSOP | 300 kHz | ||
Analog Devices Inc./Maxim Integrated | 85 C | -40 ¯C | 2.7 V | 28 V | Enable | 1 | Step-Down | Surface Mount | 10-TFSOP 10-MSOP (0.118" 3.00mm Width) | 1 | 86 % | Transistor Driver | Positive | Buck | 10-uMAX/uSOP | 300 kHz |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
Description
General part information
MAX8545 Series
The MAX8545/MAX8546/MAX8548 are voltage-mode pulse-width-modulated (PWM), step-down DC-DC controllers ideal for a variety of cost-sensitive applications. They drive low-cost n-channel MOSFETs for both the high-side switch and synchronous rectifier, and require no external current-sense resistor. These devices can supply output voltages as low as 0.8V.The MAX8545/MAX8546/MAX8548 have a wide 2.7V to 28V input range, and do not need any additional bias voltage. The output voltage can be precisely regulated from 0.8V to 0.83 x VIN. These devices can provide efficiency up to 95%. Lossless short-circuit and current-limit protection is provided by monitoring the RDS(ON)of the low-side MOSFET. The MAX8545 and MAX8548 have a current-limit threshold of 320mV, while the MAX8546 has a current-limit threshold of 165mV. All devices feature foldback-current capability to minimize power dissipation under short-circuit condition. Pulling the COMP/EN pin low with an open-collector or low-capacitance, open-drain device can shut down all devices.The MAX8545/MAX8546 operate at 300kHz and the MAX8548 operates at 100kHz. The MAX8545/MAX8546/MAX8548 are compatible with low-cost aluminum electrolytic capacitors. Input undervoltage lockout prevents proper operation under power-sag operations to prevent external MOSFETs from overheating. Internal soft-start is included to reduce inrush current. These devices are offered in space-saving 10-pin µMAX® packages.ApplicationsCable Modems and RoutersDesktops and DesknotesGraphic Card and Video SuppliesNetworking Power SuppliesNotebook Docking Station SuppliesPCI Express® Power SuppliesSet-Top BoxesTelecom Power Supplies
Documents
Technical documentation and resources