Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > LED Drivers

Diodes Incorporated DLD101-7

Name: DLD101-7
Brand: Diodes Incorporated
SKU: DLD101-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: DLD101-7

Manufacturer:: Diodes Incorporated

Category:: LED Drivers

Package:: 8-PowerUDFN

Datasheet:: DLD101-7.pdf

Description:: IC LED DRIVER LINEAR DIM 1A 8DFN

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:41,475

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

DLD101-7 from Diodes Incorporated is a dual-element linear-mode LED current sink driver integrating an N-channel MOSFET (Q1) and a base-accessible pre-biased NPN transistor (Q2) in a single DFN3030D-8 package. It delivers 1.0 A continuous drain current, supports up to 50 V supply voltage, and implements V_BE-referenced current regulation for stable LED string biasing in signage and backlighting applications.

For engineers reviewing the DLD101-7 datasheet, DLD101-7 pinout, DLD101-7 application, or DLD101-7 equivalent, key selection considerations include its dual-element topology, thermal resistance (R_θJA down to ~40 °C/W with 35 mm² copper), linear-mode power dissipation capability (1.4 W max), and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

The DLD101-7 operates as a self-biasing current sink: the LED string current develops a voltage across external sense resistor R_S, which forward-biases Q2's base-emitter junction, turning on Q1 via R_C. This closed-loop configuration maintains constant current independent of LED forward voltage variation.

Q1 (100 V V_DSS, R_DS(on) = 0.99 Ω @ V_GS = 6 V) handles high-current conduction while Q2 (V_CC = 50 V, I_O = 100 mA) provides precise V_BE-based reference generation and gate drive control - enabling accurate, temperature-compensated current regulation without external op-amps or references.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	100 V - Enables use with high-voltage LED strings up to 60 V forward drop plus margin.
I_D (continuous)	1.0 A @ T_A = 25°C - Supports medium-power LED arrays without external heatsinking under standard PCB layout.
R_DS(on)	0.99 Ω @ V_GS = 6 V - Limits conduction loss to ≤0.99 W at 1 A, critical for thermal management in linear mode.
V_CC (Q2)	50 V - Allows direct connection to common industrial/automotive supply rails without level-shifting.
P_D (max)	1.4 W @ 35 mm² 2 oz Cu - Defines maximum sustainable linear-mode power with optimized board layout.
R_θJA	~40 °C/W @ 35 mm² Cu - Enables junction temperature rise of ≤56°C at 1.4 W, supporting operation up to +125°C ambient.
AEC-Q101	Qualified - Confirms suitability for automotive interior lighting, dashboard backlighting, and under-hood signage.

Pinout & Package

Package: DFN3030D-8, 3.0 × 3.0 × 0.65 mm, lead-free/RoHS-compliant, moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
1 (D2)	MOSFET Drain	Main high-side current path for LED string return; connects to cathode side of LEDs.
2 (G2)	MOSFET Gate	Control input for Q1; driven by Q2 collector through R_C; PWM dimming point.
3 (NC)	No Connect	Internally unconnected; must be left floating or tied to GND per layout guidelines.
4 (C1)	Q2 Collector	Output node driving Q1 gate; internal connection to R_C termination.
5 (S2)	MOSFET Source	Current sense node; ties to external R_S to generate V_BE feedback voltage.
6 (B1)	Q2 Base	Direct access to transistor base; enables external bias override for analog/PWM dimming.
7 (B1')	Q2 Base (alternate)	Redundant base terminal; electrically identical to Pin 6; used for layout flexibility.
8 (E1)	Q2 Emitter	Reference node tied to system ground; completes V_BE sensing loop with R_S.

Key Features

Feature	Design Value
V_BE-Referenced Regulation	Uses inherent Q2 base-emitter voltage (~0.7 V) as stable current reference, eliminating need for precision voltage references or op-amps.
Dual-Element Integration	Combines power MOSFET and pre-biased BJT in one die, reducing component count, PCB area, and interconnect parasitics vs. discrete solutions.
Linear-Mode Optimized Thermal Design	Low R_θJC (≤0.8 °C/W) and exposed thermal pad enable efficient heat transfer to PCB copper, sustaining 1.4 W dissipation.
AEC-Q101 Qualification	Validated for automotive temperature range (−55°C to +150°C) and stress testing, supporting under-dash and exterior lighting designs.
Flexible Dimming Interface	Supports both analog dimming (via Pin 6/B1) and PWM dimming (via Pin 2/G2), compatible with MCU GPIO or 555 timer outputs.

Applications

Automotive Interior Lighting

Commercial Signage

Use Scenario: Illuminating instrument cluster backlighting and ambient footwell lighting in vehicles.

IC Role / Device Role / Timing Role: Linear current sink regulating 350–700 mA through white LED strings, maintaining consistent luminance across battery voltage swing (9–16 V).

Use Value: Eliminates switching noise that interferes with RF receivers; AEC-Q101 rating ensures reliability over 15-year vehicle lifetime.

Use Scenario: Powering edge-lit channel letters and illuminated storefront logos.

IC Role / Device Role / Timing Role: Constant-current driver for multi-LED series strings operating from 24 V DC supplies.

Use Value: High V_DSS (100 V) accommodates long LED strings (up to 18× white LEDs); low thermal resistance enables compact, fanless enclosures.

Industrial Control Panel Backlighting

Architectural Accent Lighting

Use Scenario: Driving uniform backlight for membrane switch panels in factory HMIs.

IC Role / Device Role / Timing Role: Precision current regulator compensating for LED V_F drift over temperature (−40°C to +85°C).

Use Value: V_BE-based topology provides inherent negative temperature coefficient, counteracting LED forward voltage decrease with heat.

Use Scenario: Low-noise, flicker-free illumination of retail display shelves and museum exhibits.

IC Role / Device Role / Timing Role: Linear-mode LED driver accepting 0–10 V analog dimming input or 200 Hz–2 kHz PWM signals.

Use Value: No EMI from switching harmonics; smooth dimming response preserves color rendering index (CRI >90) across full intensity range.

Equivalent & Alternatives

The following parts are listed as comparable options for similar linear LED current sink applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AL8862T-7	Switching buck LED driver (not linear); requires inductor, higher efficiency but generates EMI.	Preferred where >85% efficiency is mandatory and EMI filtering is acceptable.	Select AL8862T-7 only when thermal constraints prevent linear operation or when input voltage exceeds 50 V.
NSI45020AZT1G	Single-element adjustable current regulator (no MOSFET); max 200 mA, no PWM capability.	Limited to low-current indicator LEDs; lacks dimming interface and high-current capability.	Choose NSI45020AZT1G only for simple status indicators requiring <200 mA and minimal BOM cost.

Compared with AL8862T-7 and NSI45020AZT1G, the DLD101-7 uniquely combines high-current linear regulation (1 A), integrated dual-element topology, and automotive qualification - making it the only option for noise-sensitive, thermally constrained, AEC-Q101–compliant medium-power LED applications.

Availability

DLD101-7 is available at Aetrix Electronics and suitable for automotive interior lighting, commercial signage, and industrial HMI backlighting requiring stable component supply, AEC-Q101 compliance, and linear-mode EMI performance.

Supply support for DLD101-7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and lighting solutions.

The DLD101-7 belongs to Diodes' linear LED driver product line, engineered specifically for noise-critical, thermally demanding solid-state lighting applications where switching regulators are unsuitable.

FAQ

What is the maximum allowable power dissipation for DLD101-7 in a typical 2-layer FR-4 PCB layout?

The DLD101-7 achieves 0.9 W maximum power dissipation on a standard 2-layer FR-4 board with 2 oz copper and 6 mm² thermal pad area (per Note 4 in datasheet). This assumes ambient temperature ≤70°C and accounts for R_θJA ≈ 100 °C/W. Exceeding this requires increased copper area or forced-air cooling.

Can DLD101-7 drive multiple parallel LED strings?

No - DLD101-7 is designed exclusively for single-string current sinking. Driving parallel strings would cause current imbalance due to V_F mismatch, risking thermal runaway. For multi-string applications, one DLD101-7 per string or a matrix-switched architecture is required.

How does the DLD101-7 achieve thermal stability during extended operation?

The DLD101-7 leverages the negative temperature coefficient of Q2's V_BE to reduce output current as junction temperature rises - inherently limiting thermal runaway. Combined with low R_θJC (0.8 °C/W) and an exposed thermal pad, this enables stable 1.0 A operation up to +125°C ambient when properly mounted.

Is external compensation required for stable current regulation?

No external compensation is needed for basic current regulation. The internal V_BE feedback loop is inherently stable. However, Option 2 in the typical application (capacitor across R₂) is recommended for improved noise immunity in EMI-prone environments - not for loop stability.

DLD101-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 8-PowerUDFN

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Linear

Topology:: -

Internal Switch(s):: Yes

Number of Outputs:: 1

Voltage - Supply (Min):: -

Voltage - Supply (Max):: 50V

Voltage - Output:: -

Current - Output / Channel:: 1A

Frequency:: -

Dimming:: PWM

Applications:: Backlight, Signage

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: DFN3030D-8

DLD101-7 FAQ

1.How can I place an order for DLD101-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for DLD101-7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for DLD101-7 reliable?

The price and inventory of DLD101-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DLD101-7 is usually 5 days.

3.What payment methods are accepted for DLD101-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DLD101-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DLD101-7?

DLD101-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DLD101-7 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for DLD101-7?

For technical support, including DLD101-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DLD101-7 requirements.

6.How does Aetrix verify that DLD101-7 is sourced from the original manufacturer or authorized distributors?

All DLD101-7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DLD101-7 meets industry standards.

7.What is the process for return or replacement of DLD101-7?

All DLD101-7 units undergo pre-shipment inspection (PSI). If there is an issue with DLD101-7, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The DLD101-7 part is unused and in its original packaging.

Return procedure for DLD101-7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…