Texas Instruments TPS92513DGQR

Overview

TPS92513DGQR from Texas Instruments is a 1.5A step-down LED driver IC with integrated 220-mΩ high-side MOSFET, 4.5–42 V input range, ±5% LED current accuracy, and 100 kHz–2 MHz adjustable switching frequency. It delivers stable constant-current drive for multi-LED strings in street lighting and industrial illumination systems.

For engineers reviewing the TPS92513DGQR datasheet, TPS92513DGQR pinout, TPS92513DGQR application, or TPS92513DGQR equivalent, key selection criteria include analog/PWM dual dimming support, RT/CLK synchronization capability, UVLO hysteresis configuration, and thermal shutdown at 165°C - all validated for HVSSOP-10 layout compatibility and continuous conduction mode (CCM) operation.

Technical Context

The TPS92513DGQR implements peak-current mode control with fixed-frequency operation, enabling precise line/load regulation and simplified compensation via single 0.1 µF capacitor on COMP. Its internal oscillator supports both resistor-programmed (RT) and external clock-synchronized (CLK) modes, with PLL lock-in time under 100 µs and minimum pulse width of 140 ns.

It integrates analog current adjustment (IADJ → ISENSE scaling at 1:6), dedicated PWM dimming (PDIM), cycle-by-cycle overcurrent protection (6 A limit), and thermal shutdown with 20°C hysteresis. The BOOT-PH bootstrap circuit requires external capacitor, and UVLO threshold is externally set via resistor divider on UVLO pin.

Key Specifications

Pinout & Package

HVSSOP-10 package with exposed thermal pad (PowerPAD™); requires direct solder connection of pad to PCB ground plane for thermal performance and electrical stability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM3409HVMM/NOPB and MPQ4425AGU-AEC1-P, the TPS92513DGQR uniquely combines integrated 220-mΩ MOSFET, dual analog/PWM dimming, and RT/CLK synchronization in an industrial-qualified HVSSOP-10 package - making it optimal for cost-sensitive, thermally constrained, multi-string commercial lighting designs.

Availability

TPS92513DGQR is available at Aetrix Electronics and suitable for street lighting, emergency signage, and retail illumination requiring stable component supply, long-lifecycle support, and consistent parametric performance across manufacturing batches.

Supply support for TPS92513DGQR 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

Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and power management technologies with over 50 years of innovation in industrial and automotive power conversion.

The TPS92513DGQR belongs to TI's LED driver product line, designed specifically for high-efficiency, high-accuracy constant-current regulation in commercial and industrial solid-state lighting applications - emphasizing integration, thermal resilience, and flexible dimming.

FAQ

What is the maximum input voltage rating for the TPS92513DGQR?

The TPS92513DGQR has an absolute maximum input voltage rating of 45 V on the VIN pin, with recommended operation from 4.5 V to 42 V. Exceeding 42 V continuously may reduce reliability or trigger overvoltage stress; the TPS92513HV variant supports up to 60 V input and should be selected for higher-voltage applications. Always observe derating guidelines per TI SLVSCX6.

How does the IADJ pin function in the TPS92513DGQR?

The IADJ pin on the TPS92513DGQR sets the LED current regulation point by defining the target voltage at the ISENSE pin: V_ISENSE = V_IADJ/6. Applying 0–1.8 V to IADJ yields 0–300 mV at ISENSE, corresponding to 0–1.5 A output (with standard 0.2 Ω sense resistor). The TPS92513DGQR uses this analog interface for smooth, flicker-free dimming independent of PWM timing.

Can the TPS92513DGQR synchronize its switching frequency to an external clock?

Yes, the TPS92513DGQR supports external clock synchronization via the RT/CLK pin. When driven with a square wave transitioning below 0.63 V and above 1.81 V (≥51 ns pulse width), the device enters PLL mode and locks to frequencies from 300 kHz to 2 MHz. The TPS92513DGQR automatically reverts to resistor-programmed mode if the external clock stops, ensuring graceful fallback behavior.

What thermal management requirements apply to the TPS92513DGQR?

Thermal management of the TPS92513DGQR requires direct soldering of the exposed PowerPAD™ to a large copper area tied to PCB ground. With proper layout, the HVSSOP-10 package achieves 66.7°C/W junction-to-ambient thermal resistance. The TPS92513DGQR activates thermal shutdown at 165°C and resumes operation at 145°C, so board-level heatsinking must maintain T_J ≤125°C under full 1.5 A load at maximum ambient.

Does the TPS92513DGQR support both analog and PWM dimming simultaneously?

Yes, the TPS92513DGQR supports concurrent analog and PWM dimming: IADJ sets the maximum current level (e.g., 1.2 A), while PDIM modulates output between 0% and that ceiling. This enables hybrid dimming strategies - such as using analog to set baseline brightness and PWM for dynamic scene changes - without interaction or instability. The TPS92513DGQR maintains ±5% current accuracy across the full analog range.