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Name: LM5105SD
Brand: Texas Instruments
SKU: LM5105SD
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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Texas Instruments LM5105SD

Part No.:: LM5105SD

Manufacturer:: Texas Instruments

Package:: 10-WDFN Exposed Pad

Datasheet:: LM5105SD.pdf

Description:: IC GATE DRVR HALF-BRIDGE 10WSON

In Stock:: 3965

Quantity:: Add To Cart

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LM5105SD Specifications

Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
ProductStatus:
Obsolete
DrivenConfiguration:
Half-Bridge
ChannelType:
Synchronous
NumberofDrivers:
2
GateType:
N-Channel MOSFET
Voltage-Supply:
8V ~ 14V
LogicVoltage-VILVIH:
0.8V, 2.2V
Current-PeakOutput(SourceSink):
1.8A, 1.8A
InputType:
Non-Inverting
HighSideVoltage-Max(Bootstrap):
118 V
Rise/FallTime(Typ):
15ns, 15ns
OperatingTemperature:
-40°C ~ 125°C (TJ)
MountingType:
Surface Mount

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LM5105SD information

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LM5105SD Typical application Circuitry

Designed for driving high-voltage N-Channel MOSFETs in power topologies such as synchronous buck, half-bridge, or similar configurations, the LM5105SD is a gate driver that handles both the high-side and low-side operations.

Key Features of LM5105SD

1. High-Speed Operation: The LM5105SD offers fast propagation delays, ensuring quick responses in the operation of the system.

2. High-Voltage Capabilities: This gate driver can withstand a high voltage of up to 100V on its VDD and HB pins.

3. Independent Inputs: The chip has independent high-side and low-side inputs, providing flexibility in controlling the MOSFETs.

4. Adaptive Dead Time Protection: LM5105SD features a unique adaptive dead time circuitry to prevent both MOSFETs from conducting simultaneously.

Typical Applications for LM5105SD

LM5105SD is typically used in various applications such as synchronous buck converters, half-bridge converters, and full-bridge converters, and motor drives.

Design Guide for LM5105SD

One potential application of the LM5105SD is in a synchronous buck converter circuit:

1. VDD Pin (Pin 2): This pin is the power supply input for the chip's low-side driver. Connect it to a 10V power supply.

2. HB Pin (Pin 6): This pin is connected to a bootstrap capacitor. The HB and HS pins should be connected to the bootstrap capacitor.

3. HS Pin (Pin 5): This is the floating ground reference for the high-side gate driver and should be connected to the source of the high-side MOSFET.

4. HI and LI Pins (Pins 1 and 3): These are the input pins for the high-side and low-side gate drivers, respectively. Connect them to your PWM signals.

5. HO and LO Pins (Pins 7 and 8): These pins output the gate drive signals for the high-side and low-side MOSFETs. Connect them to the gate of your respective high-side and low-side MOSFETs.

Design Considerations:

1. Bootstrap Circuit: Be sure to properly size your bootstrap capacitor. This capacitor powers the high-side driver when it's activated.

2. Dead Time: Carefully design the PWM signals to include a "dead time" where both signals are off. This is important to prevent shoot-through.

3. Component Ratings: Ensure the power supply voltage, the MOSFETs' voltage, and the current ratings match with the system requirements.

4. PCB Layout: A good PCB layout minimizes trace inductances, which helps to reduce ringing and prevent potential damage to the LM5105SD or the MOSFETs.

Always refer to the LM5105SD datasheet for more comprehensive details and sample application circuits.

LM5105SD FAQ

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6. What is the process for return or replacement of LM5105SD?

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 LM5105SD we delivered, we will accept the replacement or return of the LM5105SD 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 LM5105SD.

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

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations