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Analog Devices LT7153SP | Demoboard EVAL-LT7153SP-AZ
5V, ±25A High Efficiency Silent Switcher®2 Step-Down Regulator
Overview
| Topology | Buck Converter |
| Input voltage | 2.7-5 V |
| Switching frequency | 950-1050 kHz |
| Output 1 | 0.5 V / 25 A |
Description
The demonstration circuit EVAL-LT7153SP-AZ is a 5V, ±25A high efficiency synchronous step-down second-generation Silent Switcher® with spread spectrum frequency modulation featuring the LT®7153SP. The demo board is designed for 0.5V output from a 2.7V to 5V input, capable of delivering ±25A to the load. The LT7153SP is a compact, ultralow emission, high efficiency, and high speed synchronous monolithic step-down switching regulator. The integrated bypass capacitors optimize all the fast current loops and make it easier to minimize EMI/EMC emissions by reducing layout sensitivity. Selectable spread spectrum mode can further improve EMI/EMC performance. 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.
Features
- 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/0.7mΩ
- 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) orForced 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
Typical applications
- Distributed Power Systems, Server Power, Point-of-Load Supply (i.e., ASIC, FPGA, DSP, µP)
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 | Qty. | Z @ 100 MHz(Ω) | IR(A) | RDC max.(mΩ) | Z @ 25 MHz(Ω) | L(mm) | W(mm) | H(mm) | Version | Pins | Type | Mount | Working Voltage(V (AC)) | Operating Temperature | SamplesAvailability & Sample | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | SPECWE-HCI SMT Flat Wire High Current Inductor, 0.47 µH, 19.5 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-HCI SMT Flat Wire High Current Inductor | Inductance0.47 µH | Performance Rated Current19.5 A | Saturation Current @ 10%8 A | Saturation Current @ 30%16 A | DC Resistance2.75 mΩ | Self Resonant Frequency280 MHz | MaterialSuperflux | Packaging Unit1500 | – | – | DC Resistance3.025 mΩ | – | Length5.5 mm | Width5.3 mm | Height4 mm | VersionSMT | Pins2 | – | MountSMT | – | Operating Temperature -40 °C up to +150 °C | –Check availability | |||
 | SPECWE-PBF Flat Wire High Current SMT Ferrite Bead, –, – | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PBF Flat Wire High Current SMT Ferrite Bead | – | – | – | – | – | – | – | Packaging Unit500 | Impedance @ 100 MHz42 Ω | Rated Current16 A | DC Resistance0.6 mΩ | Impedance @ 25 MHz28 Ω | Length5 mm | Width3 mm | Height2.55 mm | VersionNot Glued | – | – | MountSMT | – | Operating Temperature -55 °C up to +125 °C | –Check availability | |||
 | SPECWR-PHD Jumper, –, – | Simulation– | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Jumper | – | – | – | – | – | – | – | Packaging Unit1000 | – | Rated Current3 A | – | – | – | – | – | – | Pins2 | – | – | Working Voltage200 V (AC) | Operating Temperature -25 °C up to +105 °C | –Check availability | ||
 | SPECWR-PHD Pin Header, –, – | Simulation– | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header | – | – | – | – | – | – | – | Packaging Unit1000 | – | Rated Current2 A | – | – | Length6 mm | – | – | – | Pins3 | TypeStraight | MountTHT | Working Voltage200 V (AC) | Operating Temperature -40 °C up to +105 °C | –Check availability |
Availability Forecast
WE item number Packaging unitsLead time
––– weeks
| Expected Availability | Opening inventory | Quantity |
|---|---|---|
| Current Availability | – | – |
There is no forecast for this quantity request.
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