Diodes Incorporated AL3565DA-7

Overview

AL3565DA-7 from Diodes Incorporated is a triple-output Power Management IC (PMIC) designed specifically for biasing 500mA AMOLED display panels, integrating a buck-boost converter for VPOS (4.6–5.0V), an inverting buck-boost for VNEG (−5.4 to −1.4V), and a boost converter for AVDD (5.8–7.9V), all programmable via a single-wire PRG interface and operating from a 2.9–4.8V Li-ion input.

For engineers reviewing the AL3565DA-7 datasheet, AL3565DA-7 pinout, AL3565DA-7 application, or AL3565DA-7 equivalent, this PMIC delivers precise rail control for portable AMOLED power systems requiring simultaneous positive, negative, and high-voltage bias with fast discharge, short-circuit protection, and thermal shutdown.

Technical Context

The AL3565DA-7 implements three independent switching regulators: a fixed-frequency current-mode buck-boost for VPOS, a peak-current PWM inverting buck-boost for VNEG, and a fixed-frequency current-mode boost for AVDD - each with dedicated switch pins (SW1/SW2/SW3), ground domains (PGND1/PGND2/AGND), and output sensing (FBS). The PRG pin controls all three outputs via rising-edge counting with volatile storage.

Voltage regulation accuracy is ±0.5% at +25°C and ±0.8% over −40°C to +85°C for VPOS/VNEG, ±1.0% for AVDD; line regulation is ≤0.05%/V and load regulation ≤0.20%/A; fast discharge (FD) enables controlled shutdown of all rails when asserted, while EN independently enables AVDD.

Key Specifications

Pinout & Package

AL3565DA-7 is housed in a U-QFN3030-16 (Type B) 3.0mm × 3.0mm package with exposed thermal pad connected to PCB ground plane for enhanced thermal performance (θJC = 3.3°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar triple-rail AMOLED bias applications.

Compared with RTQ2132B-QT and TPS65136IRGER, the AL3565DA-7 uniquely combines one-wire programmability, fast discharge, and ultra-compact 3.0×3.0mm packaging - making it optimal for space-constrained, dynamically configurable AMOLED systems where GPIO count and layout area are critical.

Availability

AL3565DA-7 is available at Aetrix Electronics and suitable for smartphone AMOLED displays, wearable OLED modules, and automotive infotainment panels requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for AL3565DA-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 power management, signal integrity, and protection solutions for consumer, industrial, and automotive markets.

The AL3565DA-7 belongs to Diodes' AMOLED-specific PMIC product line, engineered to consolidate bias rail generation for next-generation organic displays while minimizing board space, component count, and software complexity.

FAQ

What is the purpose of the CT pin on the AL3565DA-7?

The CT pin is a dedicated oscillator timing connection that must be tied directly to ground to configure the device's internal switching frequency at 1.5MHz. No external capacitor is required, and leaving CT floating or connecting it to any other node will cause undefined operation or failure to regulate.

How does the PRG pin program all three outputs with a single signal?

The PRG pin uses a rising-edge counter architecture: each high pulse increments an internal register, and the cumulative count maps to specific VPOS, VNEG, and AVDD voltages per Tables 1–3 in the datasheet. The same edge count simultaneously sets all three rails - no time-multiplexing or state machine sequencing is needed.

Can VPOS and VNEG operate independently of AVDD?

Yes - VPOS and VNEG start automatically upon PRG assertion, while AVDD requires a separate high signal on the EN pin. This allows independent power sequencing: for example, enabling VPOS/VNEG first for panel initialization, then asserting EN to bring up AVDD for gate driver activation after stabilization.

Is the AL3565DA-7 qualified for automotive use?

The AL3565DA-7 itself is not AEC-Q100 qualified, but Diodes Incorporated offers automotive-grade variants (e.g., AL3565DAQ-7) with PPAP documentation, IATF 16949 manufacturing, and extended qualification testing. Standard AL3565DA-7 operates across −40°C to +85°C and meets ESD requirements (±2000V HBM) relevant to many infotainment applications.