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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, a modification of the component will be implemented soon. Please find the PCN 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 | 8 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, a modification of the component will be implemented soon. Please find the PCN 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 |
|---|