LT7153SP
RECOMMENDED FOR NEW DESIGNS5V, ±25A High Efficiency Silent Switcher®2 Step-Down Regulator
- Part Models
- 2
- 1ku List Price
- Starting From $8.22
Overview
- Silent Switcher®2 Architecture
- Ultralow EMI
- Eliminates PCB Layout Sensitivity
- Internal Bypass Caps Reduce Radiated EMI
- SVIN: 2.7V to 5V; PVIN: 1.5V to 5V
- VOUT: 0.5V to 0.9∙VIN
- Accurate Reference: 0.5V ±0.8% Over Temp
- Integrated N-MOSFETs: 1.8mΩ/0.7m&Omega
- 15ns Min On-Time: Low Duty Cycle Operation
- Differential VOUT Remote Sense
- Configurable Fixed Output Options
- Programmable Load Line (3 settings)
- Programmable Current Limit (3 settings)
- Programmable, Synchronizable: 400kHz to 5MHz
- User Selectable Discontinuous Mode® (DCM) or Forced Continuous Mode (FCM) Operation
- Controlled TON, Current Mode: Excellent Transient
- Power Good status, Output Tracking, Clock-Out
- Supports Spread Spectrum Operation
- PolyPhase Operation: 2, 3, 4, 6, 8 or 12 Phases
- 36-Lead (4mm x 7mm) Exposed Back LQFN Package
The LT®7153SP is a high efficiency monolithic synchronous, Silent Switcher®2 buck regulator capable of delivering ±25A to the load. The unique constant frequency, controlled on-time, current mode architecture is ideal for high step-down ratio applications that operate at high frequencies while demanding fast transient response. PolyPhase operation allows multiple LT7153SP regulators to run out-of-phase, which reduces the amount of input and output capacitors needed while enables paralleling for higher output currents. The operating supply voltage range is from 2.7V to 5V.
The operating frequency is programmable from 400kHz to 5MHz with an external resistor or sync to an external clock signal. The high frequency capability allows the use of physically smaller inductors and capacitors.
The LT7153SP package features the second-generation Silent Switcher architecture to minimize EMI emissions while delivering high efficiency at high switching frequencies. This includes the integration of bypass capacitors to optimize high frequency current loops and makes it easy to achieve advertised EMI performance by reducing layout sensitivity. It also features an exposed back for heat sink attachment, which can be used to significantly improve thermal performance.
APPLICATIONS
- Optical Module Applications
- Distributed Power Systems, Server Power
- Point-of-Load Supply (i.e., ASIC, FPGA, DSP, μP)
Documentation
Data Sheet 1
User Guide 1
Application Note 1
Video 1
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 |
|---|---|---|---|
| LT7153SPAV#TRMPBF | 36-Lead LQFN (7mm × 4mm × 0.95mm) | ||
| LT7153SPAV#TRPBF | 36-Lead LQFN (7mm × 4mm × 0.95mm) |
Software Resources
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LTspice
Models for the following parts are available in LTspice:
- LT7153SP
LTpowerCAD
Design tools for the following parts are available in LTpowerCAD:
- LT7153SP
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
5V, ±25A High Efficiency Silent Switcher®2 Step-Down Regulator
Resources
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