Features and Benefits
- Monitor Up to 6 Voltages/Sequence Up to 5 Voltages (MAX16051)
- Pin-Selectable Sequencing Order (MAX16050 Only)
- Reverse-Sequencing Capability on Shutdown
- Overvoltage Monitoring with Independent Output
- ±1.5% Threshold Accuracy
- 2.7V to 16V Operating Voltage Range
- Charge Pump to Fully Enhance External n-Channel FETs
- Capacitor-Adjustable Sequencing Delay
- Fixed or Capacitor-Adjustable Reset Timeout
- Internal 85mA Pulldowns for Discharging Capacitive Loads Quickly
- Daisy-Chaining Capability to Communicate Across Multiple Devices
- Small 4mm x 4mm, 28-Pin TQFN Package
The MAX16050 monitors up to 5 voltages and sequences up to 4 voltages, while the MAX16051 monitors up to 6 voltages and sequences up to 5 voltages. These devices provide an adjustable delay as each supply is turned on and they monitor each power-supply voltage, including the input voltage VCC. When all of the voltages reach their final values and the reset delay timer expires, a power-on-reset (active-low RESET) output deasserts allowing the micro controller (µC) to operate. If any voltage falls below its threshold, the reset output asserts and all voltage supplies are turned off. The MAX16050/MAX16051 can be daisy-chained to control a higher number of voltages in a system.
During a power-down event, the MAX16050/MAX16051 can reverse sequence the outputs. In this situation, each voltage is turned off sequentially until it reaches a 250mV level, at which point, the next supply is turned off. The MAX16050/MAX16051 also provide internal pulldown circuitry that turns on during power-down, to help discharge large output capacitors.
The MAX16050/MAX16051 feature a charge-pump supply output that can be used as a pullup voltage for driving external n-channel MOSFETs and an overvoltage output that indicates when any of the monitored voltages exceeds its overvoltage threshold. The MAX16050 also provides three sequence control inputs for changing the sequence order, while the MAX16051 has a fixed sequence order.
The MAX16050/MAX16051 are available in a 28-pin (4mm x 4mm) thin QFN package and are fully specified over the
- Networking Systems
- Storage Systems
- Telecom Equipment
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
The MAX16050 evaluation kit (EV kit) is a complete, fully assembled and tested multivoltage sequencer circuit that demonstrates the capability of the 4-channel MAX16050 and 5-channel MAX16051 sequencing ICs. The MAX16050 EV kit monitors up to nine DC-DC converter outputs and ensures proper power-up and power-down conditions for systems requiring voltage sequencing.
The EV kit features active-low RESET output signals to indicate an undervoltage condition, or when active-low SHDN or active-low FAULT signals are pulled low. Additionally, dedicated active-low OV_OUT outputs indicate an overvoltage fault when any of the EV kit's inputs go above the overvoltage threshold. The EV kit is capable of evaluating the MAX16050 and MAX16051 individually. The EV kit can be configured for daisy chaining these two devices together, which enables the user to sequence and monitor up to nine voltages across both devices. The MAX16050 EV kit also provides PCB pads for low-current MOSFETs that are controlled using the MAX16050 and MAX16051 charge-pump outputs.
The MAX16050 EV kit utilizes two power supplies, one for each IC. Each power supply can range from 2.7V to 13.2V, allowing the user to operate directly from an intermediate bus voltage. The MAX16050 EV kit also requires an additional 2.2V to 5.5V power supply for the pullup resistors' open-drain logic outputs.
- Networking Systems
- Storage Systems
- Telecom Equipment
Features & Benefits
- Quick Demo Mode Evaluation Without DC-DC Converters
- Monitors and Sequences Up to Nine DC-DC Converter Outputs
- Reverse-Sequencing Operation
- Configurable Sequencing Order (MAX16050 Only)
- Daisy-Chaining Operation of the MAX16050 and MAX16051
- Overvoltage and Power-Good Monitoring
- Fully Assembled and Tested
Documentation & Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
|Part Number||Material Declaration||Reliability Data||Pin/Package Drawing||CAD Symbols, Footprints & 3D Models|
|MAX16051ETI+||Material Declaration||Reliability Data||Thin Quad Flatpack, No Leads|
|MAX16051ETI+T||Material Declaration||Reliability Data||Thin Quad Flatpack, No Leads|
|Wafer Fabrication Data||MAX16051 Reliability Data|
Sample & Buy
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.