MAX1714B
High-Speed Step-Down Controller for Notebook Computers
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Low-Cost, Ultra-Fast, 1%-Accurate Controllers Power Next-Generation Notebook CPU Core and I/O
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Features
- Ultra-High Efficiency
- No Current-Sense Resistor (Lossless ILIMIT)
- Quick-PWM with 100ns Load-Step Response
- 1% VOUT Accuracy Over Line and Load
- 2.5V/3.3V Fixed or 1V to 5.5V Adjustable Output Range
- 2V to 28V Battery Input Range
- 200/300/450/600kHz Switching Frequency
- Overvoltage Protection (MAX1714A)
- Undervoltage Protection
- 1.7ms Digital Soft-Start
- Drives Large Synchronous-Rectifier FETs
- 2V ±1% Reference Output
- Power-Good Indicator
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The MAX1714 pulse-width modulation (PWM) controller provides the high efficiency, excellent transient response, and high DC output accuracy needed for stepping down high-voltage batteries to generate low-voltage CPU core or chip-set/RAM supplies in notebook computers.
Maxim's proprietary Quick-PWM™ quick-response, constant-on-time PWM control scheme handles wide input/output voltage ratios with ease and provides 100ns "instant-on" response to load transients while maintaining a relatively constant switching frequency.
The MAX1714 achieves high efficiency at a reduced cost by eliminating the current-sense resistor found in traditional current-mode PWMs. Efficiency is further enhanced by an ability to drive very large synchronous-rectifier MOSFETs.
Single-stage buck conversion allows these devices to directly step down high-voltage batteries for the highest possible efficiency. Alternatively, two-stage conversion (stepping down the +5V system supply instead of the battery) at a higher switching frequency allows the minimum possible physical size.
The MAX1714 is intended for CPU core, chipset, DRAM, or other low-voltage supplies as low as 1V. The MAX1714A is available in a 20-pin QSOP package and includes overvoltage protection. The MAX1714B is available in a 16-pin QSOP package with no overvoltage protection. For applications requiring VID compliance or DAC control of output voltage, refer to the MAX1710/MAX1711 data sheet. For a dual output version, refer to the MAX1715 data sheet.
Applications
- 1.8V and 2.5V I/O Supplies
- Chipset/RAM Supplies as Low as 1V
- CPU Core Supplies
- Notebook Computers
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MAX1714B
Documentation
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Data Sheet
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MAX1714-MAX1714B: High-Speed Step-Down Controller for Notebook Computers Data Sheet (Rev.2)
Documentation
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 Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX1714BEEE+ |
16-QSOP-150_MIL
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| MAX1714BEEE+T |
16-QSOP-150_MIL
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- MAX1714BEEE+
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16-QSOP-150_MIL
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HTML
Material Declaration
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HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
- MAX1714BEEE+T
- Pin/Package Drawing
-
16-QSOP-150_MIL
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
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Ultra Librarian
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SamacSys
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Part Models
Product Lifecycle
PCN
Apr 27, 2023
- 2361N1
WAFER FAB
MAX1714BEEE+
PRODUCTION
MAX1714BEEE+T
PRODUCTION
Filter by Model
Part Models
Product Lifecycle
PCN
Apr 27, 2023
- 2361N1
WAFER FAB
Software & Part Ecosystem
Evaluation Kits 2
MAX1714AEVKIT
Evaluation Kit for the MAX1714A
Features and Benefits
- +5V to +24V Input Voltage Range
- Preset 2.5V Output Voltage
- 1.0V to 5.5V Adjustable Output
- 4A Output Current
- 94% Efficient (VOUT = 2.5V, VBATT = 7V, ILOAD = 2A)
- 300kHz Switching Frequency
- No Current-Sense Resistor
- Power-Good Output
- Low-Profile Components
- Fully Assembled and Tested
Product Detail
The MAX1714A evaluation kit (EV kit) demonstrates a standard 4A application circuit. This DC-DC converter steps down high-voltage batteries and/or AC adapters, generating a precision, low-voltage rail for use as chipset, DRAM, and other low-voltage supplies. For higher current applications up to 12A, refer to the MAX1714A data sheet.
The MAX1714A EV kit provides a 2.5V output voltage from a +5V to +24V battery input range. It delivers up to 4A output current with greater than 90% efficiency while operating at a 300kHz switching frequency, and has superior line- and load-transient response.
This EV kit is a fully assembled and tested circuit board. It also allows evaluation of other output voltages in the 1.0V to 5.5V range by changing feedback resistors R1 and R2.
Applications
- 1.8V and 2.5V I/O Supplies
- Chipset/RAM Supplies as Low as 1V
- CPU Core Supplies
- Notebook Computers
MAX1714BEVKIT
Evaluation Kit for the MAX1714B
Features and Benefits
- +4.5V to +24V Input Voltage Range
- Preset 2.5V Output Voltage
- 1.0V to 5.5V Adjustable Output
- 4A Output Current
- 94% Efficient (VOUT = 2.5V, VBATT = 7V, ILOAD = 2A)
- 300kHz Switching Frequency
- No Current-Sense Resistor
- Power-Good Output
- 16-Pin QSOP Package
- Low-Profile Components
- Fully Assembled and Tested
Product Detail
The MAX1714B evaluation kit (EV kit) demonstrates a standard 4A application circuit. This DC-DC converter steps down high-voltage batteries and/or AC adapters, generating a precision, low-voltage rail for use as chipset, dynamic random-access memory (DRAM), and other low-voltage supplies.
The MAX1714B EV kit provides a 2.5V output voltage from a +4.5V to +24V battery input range. It delivers up to 4A output current with greater than 90% efficiency while operating at a 300kHz switching frequency, and has superior line- and load-transient response.
This EV kit is a fully assembled and tested circuit board. It also allows evaluation of other output voltages in the 1.0V to 5.5V range by changing feedback resistors R1 and R2.
Applications
- 1.8V and 2.5V I/O Supplies
- Chipset/RAM Supplies as Low as 1V
- CPU Core Supplies
- Notebook Computers