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HomeProductsIntegrated Circuits (ICs)PMIC - LED DriversLTC3214EDD#PBF
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LTC3214EDD#PBF - Analog Devices Inc.

Manufacturer Part Number
LTC3214EDD#PBF
Manufacturer
Analog Devices, Inc.
Allelco Part Number
32D-LTC3214EDD#PBF
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
9,482 pcs available, New & Original
Parts Description
IC LED DRIVER RGLTR 500MA 10DFN
Package
10-DFN (3x3)
Data sheet
LTC3214EDD#PBF.pdf

Environmental Information

Material Declaration LTC3214EDD#PBF.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 9482
  • Unit Price: $2.385
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $2.385 $2.39
200+ $0.924 $184.80
500+ $0.891 $445.50
1000+ $0.875 $875.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

LTC3214EDD#PBF Tech Specifications
Analog Devices Inc. - LTC3214EDD#PBF technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc. - LTC3214EDD#PBF

Product Attribute Attribute Value
Manufacturer Analog Devices, Inc.
Voltage - Supply (Min) 2.9V
Voltage - Supply (Max) 4.5V
Voltage - Output -
Type DC DC Regulator
Topology Switched Capacitor (Charge Pump)
Supplier Device Package 10-DFN (3x3)
Series -
Package / Case 10-WFDFN Exposed Pad
Package Tube
Product Attribute Attribute Value
Operating Temperature -40°C ~ 85°C (TA)
Number of Outputs 1
Mounting Type Surface Mount
Internal Switch(s) Yes
Frequency 900kHz
Dimming -
Current - Output / Channel 500mA
Base Product Number LTC3214
Applications Backlight, Lighting

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

LTC3214EDD#PBF Image
LTC3214EDD#PBF (1)

Manufacturer Part Number

LTC3214EDD#PBF

Manufacturer

Analog Devices

Introduction

The LTC3214EDD#PBF is a high-efficiency, single-output, switched-capacitor (charge pump) DC-DC regulator designed for LED backlight and lighting applications. It offers a compact and easy-to-use solution for driving LEDs from a wide range of supply voltages.

Product Features and Performance

Wide input voltage range: 2.9V to 4.5V

Single 500mA output

High switching frequency of 900kHz

Internal switches for efficient power conversion

Operates over a wide temperature range of -40°C to 85°C

Product Advantages

Compact and integrated solution for LED driving

High efficiency power conversion

Wide input voltage range compatibility

Robust thermal performance

Key Reasons to Choose This Product

Optimized for LED backlight and lighting applications

Ease of use with integrated power conversion circuitry

Reliable and long-lasting performance

Cost-effective solution for LED driver applications

Quality and Safety Features

Surface mount package for easy PCB integration

Exposed thermal pad for improved heat dissipation

Designed and manufactured to Analog Devices' high-quality standards

Compatibility

The LTC3214EDD#PBF is compatible with a wide range of LED-based applications, including:

LCD and OLED display backlighting

General lighting

Automotive lighting

Industrial lighting

Application Areas

Portable electronics

Handheld devices

Industrial equipment

Automotive systems

Product Lifecycle

The LTC3214EDD#PBF is an active and currently available product. There are no immediate plans for discontinuation. Customers are advised to contact our website's sales team for information on any potential alternative or equivalent models.

Frequently Asked Questions(FAQ)

How does the LTC3214EDD#PBF's 900kHz switching frequency influence thermal management in compact LED driver designs, and what are the implications for PCB layout and efficiency at high ambient temperatures?
The LTC3214EDD#PBF operates at a fixed 900kHz switching frequency, which enables smaller external capacitors and inductors compared to lower-frequency alternatives, contributing to space savings in portable lighting applications. However, higher frequencies increase switching losses, which can reduce overall efficiency—particularly noticeable under continuous 500mA load conditions in environments approaching 85°C. Engineers must ensure adequate thermal relief on the exposed pad and maintain sufficient copper area to manage junction temperature rise. At elevated ambient temperatures, derating may be necessary to prevent thermal shutdown, especially when operating near maximum output current.
What are the key differences between the LTC3214EDD#PBF and alternative charge pump solutions like the LM2758TL/NOPB or TPS61161DRVR in terms of input voltage tolerance, dimming capability, and suitability for battery-powered backlighting systems?
While both the LTC3214EDD#PBF and substitutes such as the LM2758TL/NOPB support similar output currents, the LTC3214 offers a wider input range from 2.9V to 4.5V, making it more suitable for Li-ion batteries discharging below 3.3V. Unlike some alternatives with pulse-skip mode operation, the LTC3214 maintains constant switching frequency, providing better EMI predictability. It also lacks dedicated PWM dimming inputs found in devices like the TPS61161DRVR, relying instead on analog control via an enable pin and external resistor programming. This trade-off favors simplicity over precise digital dimming but reduces flexibility in systems requiring high-resolution brightness adjustment.
In a multi-string LED backlight configuration using the LTC3214EDD#PBF, how should the feedback network be designed to ensure consistent brightness across LEDs with varying forward voltages, and what risks arise if the output current exceeds 500mA?
The LTC3214EDD#PBF regulates output current rather than voltage, so the feedback loop must sense current through a sense resistor placed in series with the LED string. To accommodate variations in LED forward voltage, designers should select a sense resistor value that allows the full 500mA range without saturating the internal comparator thresholds. Exceeding 500mA risks damaging the internal switch and reducing reliability due to increased power dissipation within the 10-DFN package. Thermal modeling under worst-case conditions—such as 4.5V supply driving white LEDs with high Vf—is essential to avoid exceeding the maximum junction temperature of 150°C, particularly during prolonged operation.
Can the LTC3214EDD#PBF be used in parallel to increase total LED drive current, and what challenges would this introduce regarding stability, phase margin, and current sharing?
Parallel operation of multiple LTC3214EDD#PBF units is generally not recommended due to lack of built-in current sharing mechanisms and independent switching phases. Without synchronization, beat frequencies could cause audible noise or flicker in LED arrays. Additionally, slight variations in supply voltage or component tolerances lead to disproportionate current distribution, increasing stress on one unit while underutilizing the other. Stability margins degrade further when combining switching regulators with different transient responses, risking subharmonic oscillations or instability in closed-loop configurations.
How does the LTC3214EDD#PBF’s switched capacitor topology impact efficiency compared to a traditional buck converter when driving high-current LED strings from a single-cell lithium battery?
Switched capacitor topologies like the one in the LTC3214EDD#PBF typically achieve 80–88% efficiency at 500mA load due to reduced conduction losses compared to linear regulators, but they fall short of synchronous buck converters, which can exceed 92% under similar conditions. However, buck converters require larger magnetics and additional components, increasing board space and BOM cost. For low-to-mid current applications (≤500mA) and where size is critical, the LTC3214 offers superior integration and fewer external parts despite lower peak efficiency.
What precautions should be taken when selecting input bypass capacitors for the LTC3214EDD#PBF in automotive-grade lighting systems subject to load dump transients?
Although the LTC3214EDD#PBF supports up to 4.5V, automotive environments may experience brief voltage spikes above this threshold during load dumps. While the device itself is not rated for such events, system-level protection—such as TVS diodes clamping the input—must be implemented externally. Input bypass capacitors should be placed within 1mm of the VIN and GND pins using low-ESR ceramics (e.g., X7R 1μF), but their values alone cannot suppress high-energy transients. Designers must coordinate with overvoltage protection circuits to prevent latch-up or damage during fault conditions.
How does the Moisture Sensitivity Level (MSL) rating of 1 for the LTC3214EDD#PBF affect storage and handling procedures in high-volume manufacturing environments?
With an MSL rating of 1, the LTC3214EDD#PBF has unlimited shelf life and requires no special drying before reflow soldering, simplifying inventory management and reducing production costs. However, operators must still follow standard ESD protocols due to its sensitive CMOS circuitry, even though moisture exposure poses minimal risk. This classification allows flexible scheduling of pick-and-place operations without baking, benefiting just-in-time assembly lines focused on minimizing lead time and waste.
What role does the internal oscillator’s 900kHz frequency play in EMI compliance for consumer lighting products using the LTC3214EDD#PBF, and how might shielding or filtering be applied?
The fixed 900kHz frequency simplifies EMI pre-compliance testing by avoiding modulation artifacts common in variable-frequency regulators. However, conducted emissions in the 150kHz–30MHz range can still exceed limits if layout parasitics resonate with bypass capacitors. Careful placement of input/output caps, use of ferrite beads on noisy nodes, and routing switch nodes away from sensitive analog traces help mitigate interference. Shielded enclosures or conductive coatings may be required in dense RF environments, though most portable lighting applications meet FCC Class B without additional measures when following best practices.
When substituting the LTC3214EDD#PBF with part numbers like NCP5030MTTXG or LM3530UME-40B/NOPB, what architectural differences must be considered in firmware or hardware design?
Substitutes often differ fundamentally: the NCP5030 is a dual-output boost converter, while the LM3530 includes integrated op-amps for analog dimming. Replacing the LTC3214 may require redesigning the feedback network, changing dimming interface logic, or adding external drivers if output current capability changes. Firmware controlling brightness via I²C or PWM may no longer apply unless the substitute supports equivalent interfaces. Always validate transient response, startup behavior, and thermal performance under actual load profiles before committing to substitution.
How does the absence of a dedicated enable pin affect power sequencing in systems using the LTC3214EDD#PBF alongside microcontrollers or other PMICs?
The LTC3214EDD#PBF uses a simple logic-level enable function controlled through the EN pin, allowing direct connection to microcontroller GPIOs for software-based power control. Unlike devices with soft-start or sequencing features, it powers up instantly when enabled, which avoids issues with staggered startup but demands careful coordination to prevent inrush surges on shared rails. If used with other regulators, external RC networks can introduce minimal delay, though precise timing requires simulation or empirical validation.
What impact does temperature derating have on the maximum output current capability of the LTC3214EDD#PBF, and how should this be reflected in reliability predictions for long-life LED fixtures?
The datasheet specifies a maximum junction temperature of 150°C, but continuous operation at 85°C ambient already approaches thermal limits under full load. As ambient temperature increases, internal resistance rises slightly, causing higher losses and necessitating current reduction to maintain reliability. For mission-critical applications like medical or industrial lighting, engineers should apply a derating factor—typically 0.8× nominal current above 60°C—to extend MTBF. Accelerated life testing under elevated temperatures confirms that conservative current margins significantly improve operational longevity.

Parts with Similar Specifications

The three parts on the right have similar specifications to Analog Devices Inc. LTC3214EDD#PBF

Product Attribute LTC3214EDD#TRPBF LTC3215EDD#TRPBF LTC3212EDDB#TRPBF LTC3215EDD#PBF
Part Number LTC3214EDD#TRPBF LTC3215EDD#TRPBF LTC3212EDDB#TRPBF LTC3215EDD#PBF
Manufacturer Analog Devices Inc. Analog Devices Inc. Analog Devices Inc. Analog Devices Inc.
Base Product Number - DAC34H84 MAX500 ADS62P42
Applications - - - -
Topology - - - -
Internal Switch(s) - - - -
Frequency - - - -
Number of Outputs - - - -
Series - - - -
Voltage - Supply (Max) - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Current - Output / Channel - - - -
Dimming - - - -
Voltage - Supply (Min) - - - -
Type - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Voltage - Output - - - -

LTC3214EDD#PBF Datasheet PDF

Download LTC3214EDD#PBF pdf datasheets and Analog Devices Inc. documentation for LTC3214EDD#PBF - Analog Devices Inc..

Datasheets
Cylindrical Battery Holders.pdf
Environmental Information
Material Declaration LTC3214EDD#PBF.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
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LTC3214EDD#PBF Image

LTC3214EDD#PBF

Analog Devices Inc.
32D-LTC3214EDD#PBF

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