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Monolithic Power Systems NB685 | Demoboard EVNB685-Q-01A
26V, Low IQ, High Current Synchronous Buck Converter With+/-1A and Bufferd Refference
Overview
| Topology | Buck Converter |
| Input voltage | 4.5-26 V |
| Output 1 | 1.35 V / 12 A |
| IC revision | Rev.1.0 |
Description
The NB685 provides a complete power supply for DDR3, DDR3L, LPDDR3, and DDR4 memory with the highest power density. It integrates a high frequency synchronous rectified step-down switch mode converter (VDDQ) with a 1A sink/source LDO (VTT) and buffered low noise reference (VTTREF). The NB685 operates at high efficiency over a wide output current load rang based on MPS proprietary switching loss reduction tech and internal low Ron power MOSFETs.
Features
Wide 4.5V to 26V Operating Input Range
- Compatible for IMVP8
- 135uA low quiescent Current
- 12A Continous Output Current
- Selectable Ultrasonic Mode
- Selectable 500k/700k Switching Frequency
- Built-in +/- 1A VTTLDO
- 1% Buffered VTTREF Output
- Adaptive COT for Fast transient
- DC Auto Tune Loop
- Stable with POSCAP and Ceramic OutputCap
- Over Temperature Warning
- Internal Soft Start
- Output Discharge
- OCL, OVP, UVP, OTP
- Latch off Reset via EN or Power Cycle
Typical applications
- Networking Systems and Server
- Laptop Computer
- Distributed Power Systems
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC (mΩ) | fres (MHz) | Material | Operation Force (Value) (g) | Schematic | Packaging | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 744311068 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-HCI SMT Flat Wire High Current Inductor | 0.68 | 20.9 | 9.5 | 20 | 3.1 | 105 | Superflux | – | – | – | ||
 | 450301014042 | SPEC | – | 5 files | Active i| Production is active. Expected lifetime: >10 years. | WS-SLTV THT Mini Slide Switch, Opposite Side Connection 10x2.5 mm | – | – | – | – | – | – | – | 800 | SPDT | Bulk |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 744311068 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | |
| 450301014042 | SPEC | – |
| Samples |
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| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC (mΩ) | fres (MHz) | Material | Operation Force (Value) (g) | Schematic | Packaging | Samples |
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