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

Diodes Incorporated AP3036KTR-G1

Name: AP3036KTR-G1
Brand: Diodes Incorporated
SKU: AP3036KTR-G1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP3036KTR-G1

Manufacturer:: Diodes Incorporated

Category:: LED Drivers

Package:: SOT-23-6

Datasheet:: AP3036KTR-G1.pdf

Description:: IC LED DRVR RGLTR PWM SOT23-6

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AP3036KTR-G1 from BCD Semiconductor Manufacturing Limited is a white LED step-up DC/DC converter IC designed to drive up to eight series-connected WLEDs in backlight systems. It features a fixed 1.0MHz switching frequency, integrated Schottky diode, 200mV feedback reference voltage (AP3036 variant), and output over-voltage protection clamping at 30V - enabling compact, high-efficiency backlight power for space-constrained portable displays.

For engineers reviewing the AP3036KTR-G1 datasheet, AP3036KTR-G1 pinout, AP3036KTR-G1 application, or AP3036KTR-G1 equivalent, key selection considerations include its SOT-23-6 package compatibility, 2.5–16V input range, PWM dimming support via CTRL pin, and inherent current uniformity across series LEDs without external current-setting resistors per string.

Technical Context

The AP3036KTR-G1 implements a constant-frequency current-mode boost controller with internal 550mA switch and integrated Schottky diode, eliminating external diode requirements. Its feedback loop regulates LED current using a precision 200mV reference at the FB pin, enabling stable brightness control with a single external resistor.

It supports three operational modes via the CTRL pin: enable (≥1.8V), shutdown (≤0.4V), and PWM dimming (0.5–100kHz duty-controlled signal). Output over-voltage protection activates when open-circuit LED conditions cause VOUT to exceed 30V, clamping voltage to protect downstream components.

Key Specifications

Parameter	Value and Actual Design Meaning
Switching Frequency	Fixed 1.0MHz - enables use of ultra-small 1mm-height inductors and 0.22µF ceramic output capacitor.
Feedback Reference Voltage	200mV (AP3036) - sets LED current with single resistor; tolerance ±6% ensures ±12% current accuracy over temp.
Output Over-Voltage Threshold	30V - protects LEDs and IC during open-circuit or thermal fault conditions by clamping VOUT.
Efficiency	Up to 84% at 3.6V input, 5 LEDs - minimizes thermal load in battery-powered handheld devices.
CTRL Pin Logic Threshold	Enable ≥1.8V, Disable ≤0.4V - compatible with 1.8V/3.3V GPIOs and standard PWM signals without level-shifting.
Integrated Schottky Diode	V_F = 0.7V @ 150mA - eliminates external diode footprint and reduces BOM count in compact designs.
Operating Input Range	2.5V to 16V - supports single-cell Li-ion (2.7–4.2V), dual-cell alkaline (2.4–3.2V), and USB-powered systems.

Pinout & Package

SOT-23-6 package (3.02 × 2.82 × 0.95 mm, RoHS-compliant "G1" green finish), thermally optimized with θ_JA = 265°C/W and θ_JC = 60°C/W - suitable for low-power portable applications with limited PCB area and no heatsink.

Pin/Terminal	Circuit Role	Design Meaning
1 SW	Switch node	Connects to inductor; carries pulsed 550mA peak current; requires low-inductance layout to minimize EMI.
2 GND	Power ground	Primary return path for switch current and FB/CTRL bias; must be low-impedance copper pour.
3 FB	Voltage feedback input	Senses output current via resistor divider; 200mV reference sets I_LED = 200mV / R_SET.
4 CTRL	Enable/dimming control	Dual-function: logic-level shutdown or PWM input (0.5–100kHz) for analog-equivalent brightness control.
5 VOUT	Boost output	Anode of internal Schottky diode; connects directly to LED string cathodes; routed away from noise-sensitive nodes.
6 VIN	Input supply	Requires local 1–10µF ceramic bypass capacitor close to pin to suppress input ripple and stabilize regulation.

Key Features

Feature	Design Value
Inherently uniform LED current	Series topology + single-current-loop regulation ensures identical current across all 8 LEDs - no binning or per-string compensation needed.
No external Schottky diode required	Integrated diode reduces component count by one, saves ~0.8mm² PCB area, and eliminates diode forward-voltage variation impact.
High-frequency PWM dimming	CTRL pin accepts 0.5–100kHz PWM signals - enables flicker-free dimming down to 0.1% duty cycle without audible noise.
Output over-voltage protection	Clamps VOUT at 30V during LED open-circuit faults - prevents damage to LEDs, driver, and display flex circuits.
Tiny passive component footprint	Supports 1mm-height inductor and 0.22µF X5R/X7R output capacitor - ideal for <10mm² total solution size in mobile frontlight modules.

Applications

Cellular Phones

Digital Cameras

Use Scenario: Backlighting for 3.5–5.5-inch AMOLED/LCD panels in smartphones with dynamic brightness control.

IC Role / Device Role / Timing Role: Primary WLED boost controller regulating constant current across 6–8 series LEDs using single-resistor feedback.

Use Value: 84% efficiency extends battery runtime; 1.0MHz switching avoids audible noise; integrated diode simplifies layout for narrow bezel designs.

Use Scenario: Flash-assisted LCD viewfinder and rear-panel display backlight in compact digital still cameras.

IC Role / Device Role / Timing Role: High-efficiency boost converter delivering 20mA per LED at up to 27V total string voltage (8×3.45V).

Use Value: 30V OVP prevents overvoltage damage during flash-triggered transient load changes; CTRL pin enables scene-based dimming profiles.

LCD Modules

GPS Receivers

Use Scenario: Industrial and automotive-grade monochrome/color LCD modules requiring stable brightness over -40°C to +85°C.

IC Role / Device Role / Timing Role: Temperature-stable LED driver with ±6% FB reference drift over full operating range.

Use Value: 200mV reference maintains ±12% LED current accuracy across temperature; SOT-23-6 package withstands reflow and mechanical stress.

Use Scenario: Outdoor navigation devices with sunlight-readable displays needing consistent backlight intensity under varying battery voltage.

IC Role / Device Role / Timing Role: Wide-input (2.5–16V) boost controller compensating for Li-ion discharge curve (4.2V → 3.0V).

Use Value: Maintains regulated LED current down to 2.5V input - avoids dimming during low-battery operation; 16V max rating accommodates surge transients.

Equivalent & Alternatives

The following parts are listed as comparable options for similar white LED boost converter applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AP3036AKTR-G1	250mV FB reference (vs. 200mV); otherwise identical pinout, specs, and package.	Requires different R_SET value to achieve same LED current; not drop-in compatible without resistor change.	Select AP3036AKTR-G1 only if system design targets 250mV reference for tighter current tolerance or legacy compatibility.
RT9397BZSP	2.5–5.5V input range (narrower); 1.2MHz switching; no integrated Schottky diode.	Requires external diode and larger inductor; unsuitable for >5.5V input or space-constrained layouts.	Choose RT9397BZSP only for ultra-low-noise 1.2MHz designs where external diode placement is acceptable and input stays below 5.5V.

Compared with AP3036AKTR-G1, the AP3036KTR-G1 offers lower FB reference for higher current resolution at same R_SET; versus RT9397BZSP, it delivers broader input range, integrated diode, and proven 8-LED capability - making it optimal for portable display backlighting where size, voltage range, and integration are critical.

Availability

AP3036KTR-G1 is available at Aetrix Electronics and suitable for cellular phone backlighting, digital camera displays, LCD module illumination, and GPS receiver panels requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for AP3036KTR-G1 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

BCD Semiconductor Manufacturing Limited is a Shanghai-based analog IC designer and foundry specializing in high-performance power management and mixed-signal solutions for consumer, industrial, and automotive markets.

The AP3036 product line targets portable display backlighting, emphasizing integration (integrated Schottky), miniaturization (1MHz/1mm inductor), and robustness (30V OVP) for battery-powered handheld electronics.

FAQ

What is the maximum number of white LEDs the AP3036KTR-G1 can drive?

The AP3036KTR-G1 is specified to drive up to eight white LEDs in series, assuming typical forward voltage of 3.45V per LED at 20mA - resulting in a maximum output voltage requirement of ~27.6V, well within its 30V OVP threshold and 38V SW pin rating.

Does the AP3036KTR-G1 require an external Schottky diode?

No. The AP3036KTR-G1 integrates a Schottky diode with 0.7V forward drop at 150mA, eliminating the need for an external diode and reducing PCB area, BOM count, and potential failure points in the boost path.

How does PWM dimming work on the CTRL pin?

The CTRL pin accepts a PWM signal (0.5–100kHz) to modulate LED brightness: high pulses enable the converter, low pulses disable it. Duty cycle directly controls average LED current - e.g., 50% duty yields ~50% perceived brightness without color shift.

What is the purpose of the 200mV feedback reference voltage?

The 200mV reference at the FB pin sets LED current via I_LED = 200mV / R_SET. This low-voltage reference minimizes power loss in the setting resistor and improves accuracy by reducing sensitivity to resistor tolerance and layout parasitics.

AP3036KTR-G1 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: SOT-23-6

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Type:: DC DC Regulator

Topology:: Step-Up (Boost)

Internal Switch(s):: Yes

Number of Outputs:: 1

Voltage - Supply (Min):: 2.5V

Voltage - Supply (Max):: 16V

Voltage - Output:: 38V

Current - Output / Channel:: 550mA (Switch)

Frequency:: 1MHz

Dimming:: PWM

Applications:: Backlight

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-6

AP3036KTR-G1 FAQ

1.How can I place an order for AP3036KTR-G1 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP3036KTR-G1 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 AP3036KTR-G1 reliable?

The price and inventory of AP3036KTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP3036KTR-G1 is usually 5 days.

3.What payment methods are accepted for AP3036KTR-G1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP3036KTR-G1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP3036KTR-G1?

AP3036KTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP3036KTR-G1 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 AP3036KTR-G1?

For technical support, including AP3036KTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP3036KTR-G1 requirements.

6.How does Aetrix verify that AP3036KTR-G1 is sourced from the original manufacturer or authorized distributors?

All AP3036KTR-G1 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 AP3036KTR-G1 meets industry standards.

7.What is the process for return or replacement of AP3036KTR-G1?

All AP3036KTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AP3036KTR-G1, 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 AP3036KTR-G1 part is unused and in its original packaging.

Return procedure for AP3036KTR-G1:

1.Submit a request within 90 days.

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

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