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Analog Devices LTM8051EY | Demoboard DC2860A
Quad 40VIN Silent Switcher μModule Regulator with Configurable 1.2A Output Array
Overview
| Topology | Buck Converter |
| Input voltage | 7-40 V |
| Output 1 | 2.5 V / 1.2 A |
| Output 2 | 3.3 V / 1.2 A |
| Output 3 | 1.8 V / 1.2 A |
| Output 4 | 5 V / 1.2 A |
Description
Demonstration circuit 2860A is a quad step-down DC/DC switching converter featuring the LTM8051 silent switcher μModule® regulator. The demo board is designed to deliver quad 5V/1.2A, 3.3V/1.2A, 2.5V/1.2A and 1.8V/1.2A outputs from a 7V to 40V input. The Silent Switcher® architecture minimizes EMI while achieving high efficiency at frequencies up to 3MHz. The modes of operation (Burst Mode® operation or discontinuous mode/SYNC) are jumper selectable. Burst Mode operation improves efficiency at light loads.The LTM8051 is a fixed frequency PWM regulator with current mode control scheme. The switching frequency of channel 1 and channel 4 is set by an appropriate resistor (R11) from the RT14 pin to ground. The switching frequency of channel 2 and channel 3 is set by another appropriate resistor (R23) from the RT23 pin to ground. The RUN14 pin (RUN14 terminal) can be used to set the LTM8051 channel 1 and channel 4 in micro power shut-down mode, while the RUN23 pin (RUN23 terminal) can be used to set the channel 2 and channel 3 in shutdown mode. Output tracking and soft start pins (TRSS1/TRSS2/TRSS3/TRSS4) allow user control of output voltage ramp rate during startup. The power good output of each channel (PG1/PG2/PG3/PG4) will be low when that channel’s output voltage is outside of the ±7.5% regulation window.
Features
- Four Complete Step-Down Switching Power Supplies
- Low Noise Silent Switcher® Architecture
- CISPR22 Class B Compliant
- CISPR25 Class 5 Compliant
- Wide Input Voltage Range: 3V to 40V
- Wide Output Voltage Range: 0.8V to 8V
- Selectable Switching Frequency: 300kHz to 3MHz
- 1.2A Continuous Output Current per Channel at 12VIN, 3.3VOUT, TA = 85°C
- 1.5A Continuous Output Current per Channel at 12VIN, 3.3VOUT, TA = 60°C
- Multiphase or Multi-μModule Parallelable for Increased Output Current
- Compact Package (6.25mm × 11.25mm × 2.22mm) Surface Mount BGA
Typical applications
- ADI in 5G, Radar system, RadioVerse, Sensor interface
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (mm) | f (mm) | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Mount | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR (mA) | Z @ 1 GHz (Ω) | H (mm) | Type | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 744373240022 | 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-LHMI SMT Power Inductor | 4.45 | – | 0.22 | 11.4 | 10.8 | 22.3 | 7.3 | 195 | SMT | – | – | – | – | – | 1.8 | – | ||
 | 74279226101 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-MPSB EMI Multilayer Power Suppression Bead | 4.5 | – | – | – | – | – | 6 | – | SMT | 100 | 160 | 1100 MHz | 8000 | 150 | 2.3 | High Current | ||
 | 702931000 | SPEC | – | 3 files | Active i| Production is active. Expected lifetime: >10 years. | WA-SNSR Self-Retaining Spacer | 6.4 | 4.8 | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 744373240022 | 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. | |
| 74279226101 | SPEC | |
| 702931000 | SPEC | – |
| Samples |
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| Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (mm) | f (mm) | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC max. (mΩ) | fres (MHz) | Mount | Z @ 100 MHz (Ω) | Zmax (Ω) | Test Condition Zmax | IR (mA) | Z @ 1 GHz (Ω) | H (mm) | Type | Samples |
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