Diodes Incorporated AP8802HSP-13

Overview

AP8802HSP-13 from Diodes Incorporated is a 60V input, 1A constant-current step-down DC/DC LED driver IC in SO-8EP package, operating up to 700kHz switching frequency with ±5% LED current accuracy and built-in open-circuit protection. It drives up to 13 series LEDs from 8–60V input, enabling uniform brightness without ballast resistors in commercial lighting and LCD backlighting.

For engineers reviewing the AP8802HSP-13 datasheet, AP8802HSP-13 pinout, AP8802HSP-13 application, or AP8802HSP-13 equivalent, key selection criteria include input voltage range (8–60V), dimming interface compatibility (PWM/DC on CTRL), thermal performance (θJA = 45°C/W), and external RSET-based current programming.

Technical Context

The AP8802HSP-13 integrates a high-side N-channel MOSFET switch (RDS(ON) = 0.65Ω typ) and internal 1.25V reference to regulate LED current via feedback at the SET pin. Its current-mode control architecture ensures stable operation across wide input voltage (8–60V) and duty cycle (10–95%) ranges.

Dimming is implemented through dual-mode CTRL pin functionality: analog voltage (0.3–2.5V) adjusts output current from 24% to 200% of nominal, while PWM signals (≤500Hz) enable precise digital brightness control. Built-in soft-start and open-LED protection enhance system reliability.

Key Specifications

Pinout & Package

AP8802HSP-13 uses the SO-8EP (exposed pad) package, with the EP internally connected to GND for enhanced thermal dissipation. The exposed pad must be soldered to a large GND copper area with ≥6 thermal vias (0.3mm diameter) for optimal thermal performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar constant-current LED driver applications.

Compared with AL8862SP-13 and MPQ4425AGU-AEC1-P, AP8802HSP-13 uniquely balances 60V input capability, 1A output, analog+PWM dimming, and open-circuit protection in a cost-optimized SO-8EP package-making it ideal for non-automotive commercial and industrial LED systems where design simplicity and thermal efficiency are prioritized.

Availability

AP8802HSP-13 is available at Aetrix Electronics and suitable for commercial lighting, LCD panel backlighting, appliance interior lighting, and architectural accent lighting requiring stable component supply, RoHS-compliant green packaging, and thermal robustness across −40°C to +125°C ambient.

Supply support for AP8802HSP-13 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 ICs, specializing in power management, signal integrity, and LED lighting solutions with operations across Asia, Europe, and the Americas.

The AP8802H belongs to Diodes' high-voltage LED driver product line, engineered specifically for efficient, thermally robust constant-current regulation in 8–60V input LED lighting systems where reliability and design simplicity are critical.

FAQ

What is the minimum input voltage required for AP8802HSP-13 to regulate 1A LED current?

The AP8802HSP-13 requires a minimum input voltage of 8V to maintain regulation at full 1A output. Below this, the internal control loop cannot sustain the required duty cycle, especially when driving multiple LEDs with cumulative forward voltage exceeding VIN. At 8V input, maximum supported LED string voltage is ~7.2V (accounting for R_DS(ON) and diode drop).

How does the CTRL pin behave when left floating?

When the CTRL pin is left floating, its internal 50kΩ pull-up to the 1.25V reference forces it to ~1.25V, resulting in 100% nominal LED current output. This default state avoids unintended shutdown and enables basic operation without external control circuitry-ideal for fixed-brightness applications.

Can AP8802HSP-13 drive LEDs with total forward voltage exceeding 60V?

No. The AP8802HSP-13's absolute maximum VIN rating is +65V, and recommended operating input voltage is capped at 60V. Driving an LED string whose total forward voltage exceeds VIN minus dropout (typically >5V) will cause regulation loss and uncontrolled current decay. Maximum supported string voltage is ~55V under worst-case conditions.

What thermal pad layout is required to achieve the rated 1A output continuously?

To sustain 1A continuous output at +125°C ambient, the SO-8EP exposed pad must be connected to a ≥25×25mm 2oz copper GND plane with ≥6 thermal vias (0.3mm diameter, spaced ≤2mm apart). Without this, junction temperature exceeds 150°C, triggering thermal shutdown per Figure 19 derating curve.