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Name: LTM4644IY#PBF
Brand: Analog Devices Inc.
SKU: LTM4644IY#PBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Analog Devices Inc. LTM4644IY#PBF

Part No.:: LTM4644IY#PBF

Manufacturer:: Analog Devices Inc.

Package:: 77-BBGA Module

Datasheet:: LTM4644IY#PBF.pdf

Description:: DC DC CONVERTER 4X0.6-5.5V

In Stock:: 3492

Quantity:: Add To Cart

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LTM4644IY#PBF Specifications

Package/Case:
77-BBGA Module
Packaging:
Tray
Series:
µModule®
ProductStatus:
Active
Type:
Non-Isolated PoL Module
NumberofOutputs:
4
Voltage-Input(Min):
4V
Voltage-Input(Max):
14V
Voltage-Output1:
0.6 ~ 5.5V
Voltage-Output2:
0.6 ~ 5.5V
Voltage-Output3:
0.6 ~ 5.5V
Voltage-Output4:
0.6 ~ 5.5V
Current-Output(Max):
4A, 4A, 4A, 4A
Power(Watts):
-
Voltage-Isolation:
-
Applications:
ITE (Commercial)
Features:
OCP, OTP, OVP
OperatingTemperature:
-40°C ~ 125°C
Efficiency:
-
MountingType:
Surface Mount
Size/Dimension:
0.59 L x 0.35 W x 0.20 H (15.0mm x 9.0mm x 5.0mm)
ControlFeatures:
ApprovalAgency:

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LTM4644IY#PBF information

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LTM4644IY#PBF Typical application Circuitry

LTM4644IY PBF

LTM4644IY#PBF is a high efficiency, quad output step-down (buck) DC-DC converter chip designed for powering low voltage digital circuits and providing power management solutions.

Application Scenarios: LTM4644IY#PBF is commonly used in applications that require multiple regulated power supply outputs with high efficiencies, such as telecommunications equipment, networking devices, industrial control systems, and embedded systems. It provides a compact and efficient power solution for powering various digital components in these applications.

Main Parameters: The high efficiency, low quiescent current, and wide input voltage range of the LTM4644IY#PBF make it ideal for a variety of power supply applications. It provides four independent outputs, allowing for different voltage levels to power different parts of the circuit. The chip supports synchronous rectification, and current mode control, and offers protection features such as overcurrent protection, overvoltage protection, and thermal shutdown.

Circuit Connection: Let's consider an example circuit using LTM4644IY#PBF to power a system with multiple voltage requirements:

1. Input Power Connection:

- Connect the VIN pin of LTM4644IY#PBF to the power supply voltage source (e.g., 12V).

- Join the LTM4644IY#PBF is GND pin to the power supply's ground reference.

2. Output 1 (VOUT1) Connection:

- Connect the VOUT1 pin of LTM4644IY#PBF to the input pin of the first load (e.g., microcontroller or FPGA) that requires a specific voltage level.

- Join the load's GND pin to the ground reference.

3. Output 2 (VOUT2) Connection:

- Connect the VOUT2 pin of LTM4644IY#PBF to the input pin of the second load (e.g., memory module or sensor) that requires a different voltage level.

- Join the load's GND pin to the ground reference.

4. Output 3 (VOUT3) Connection:

- Connect the VOUT3 pin of LTM4644IY#PBF to the input pin of the third load (e.g., display or communication module) that requires another voltage level. - Join the load's GND pin to the ground reference.

5. Output 4 (VOUT4) Connection:

- Connect the VOUT4 pin of LTM4644IY#PBF to the input pin of the fourth load (e.g., audio amplifier or motor driver) that requires a different voltage level.

- Attach the load's GND pin to the ground reference.

6. Enable and Mode Control:

- Connect the EN (Enable) pin of LTM4644IY#PBF to the enable signal source (e.g., a microcontroller GPIO pin) to control the power operation.

- Connect the MODE pin of LTM4644IY#PBF to set the desired operation mode (e.g., pulse skipping or forced continuous) based on the application requirements.

7. Feedback and Compensation:

- Connect the FB1, FB2, FB3, and FB4 (Feedback) pins of LTM4644IY#PBF to the voltage feedback resistors for each output to set the desired output voltage levels.

- Connect the COMP pin of LTM4644IY#PBF to the external compensation components (e.g., resistor and capacitor) to stabilize the control loop and improve transient response.

Design Considerations: When designing a circuit with LTM4644IY#PBF, consider the following:

1. Output Voltage and Load Requirements: Determine the required output voltage levels and current ratings for each load in the system.

2. Efficiency and Heat Dissipation: Consider the power dissipation and thermal management requirements to ensure efficient operation and prevent overheating.

3. Input and Output Capacitors: Choose appropriate input and output capacitors based on the desired transient response, ripple voltage, and stability.

4. Protection and Fault Handling: Implement proper protection measures, such as overcurrent and overvoltage protection, to safeguard the circuit and connected devices.

In summary, LTM4644IY#PBF is a quad output step-down DC-DC converter chip used for efficient power conversion in applications requiring multiple regulated power supply outputs. When designing a circuit with LTM4644IY#PBF, considerations should be given to output voltage requirements, efficiency, thermal management, and protection features for reliable and optimal power delivery.

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6. What is the process for return or replacement of LTM4644IY#PBF?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the LTM4644IY#PBF we delivered, we will accept the replacement or return of the LTM4644IY#PBF only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of LTM4644IY#PBF.

(3)The PartNo is unused and only in the original unpacked packaging.

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(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations