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LM3478QMM The Texas Instruments LM3478QMM is a DC/DC switching regulator controller designed for high-efficiency power conversion. It supports Boost, SEPIC, and Flyback topologies.
Mfr Part #:

LM3478QMM

Available from 2 distributors
Mfr Name: Texas Instruments
Texas Instruments
The Texas Instruments LM3478QMM is a DC/DC switching regulator controller designed for high-efficiency power conversion. It supports Boost, SEPIC, and Flyback topologies.
✓ Total Stock: 37,160 pcs
$ Price Range: $1.08

LM3478QMM Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Romaks Technologies ✓
Non-Authorised Inventory information
36,160 pcs
On Request
36160 pcs On Request 1 On Request On Request On Request On Request On Request
Xingangxin ✓
Non-Authorised Inventory information
1,000 pcs
On Request
1000 pcs On Request 1 On Request On Request On Request On Request On Request
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LM3478QMM Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Halogen Free
SVHC Present
Tape & Reel
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LM3478QMM Description

Short technical summary and product information.

The Texas Instruments LM3478QMM is an automotive-grade DC/DC switching regulator controller. It is designed for Boost, SEPIC, and Flyback converter applications, offering flexibility in power supply design.

 

Key electrical specifications include a wide input voltage range from 2.97V to 40V and a maximum output voltage of 500V. The controller operates in current mode and features an adjustable clock frequency from 100kHz to 1MHz. It also includes features such as adjustable current limit, enable function, frequency synchronization, and light-load efficiency.

 

The device is housed in a compact 8-lead VSSOP package, suitable for surface mount applications. Its operating temperature range is -40°C to 125°C, making it suitable for demanding automotive environments. The LM3478QMM is AEC-Q100 qualified, ensuring reliability and performance for automotive-grade applications.

 

Additional features include an internal push-pull driver with 1A peak current capability, current limit, thermal shutdown, frequency compensation optimized with a capacitor and resistor, internal soft start, and undervoltage lockout with hysteresis.

LM3478QMM Quick Information

Product Type: DC/DC Switching Regulator Controller
Series: LM3478-Q1
Canonical Name: LM3478QMM
Subcategory: Power Management ICs

LM3478QMM Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Yes

LM3478QMM Estimated Pricing

Qty Low High
1+ $1.08 $1.08

Estimated market price range - modelled values for guidance only, not live distributor offers.

LM3478QMM Features

  • Wide 2.97V to 40V input voltage range.
  • Supports Boost, SEPIC, and Flyback topologies.
  • Adjustable clock frequency up to 1MHz.
  • AEC-Q100 qualified for automotive applications.
  • Compact 8-lead VSSOP package.

LM3478QMM Applications

  • Ideal for automotive power systems.
  • Suitable for high-efficiency DC/DC converters.
  • Used in SEPIC and Flyback designs.
  • General purpose boost converter applications.

LM3478QMM FAQs

7 frequently asked questions generated from this part’s specifications.
What is the input voltage range of the LM3478QMM?

2.97V to 40V.

What package is the LM3478QMM available in?

VSSOP-8 (DGK) with dimensions 3mm x 4.9mm.

What is the operating temperature range?

-40°C to 125°C.

What topologies does the LM3478QMM support?

Boost, Flyback, Forward, and SEPIC.

What is the typical quiescent current?

2.7 µA.

What is the adjustable clock frequency range?

100 kHz to 1 MHz.

What is the internal driver peak current?

1 A.

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