Texas Instruments TPS92200D2DDCR

Overview

TPS92200D2DDCR from Texas Instruments is a 1.5-A synchronous buck LED driver IC with 4-V to 30-V input range, integrated 150-mΩ high-side and 90-mΩ low-side NMOS FETs, 1-MHz switching frequency, and analog dimming controlled by PWM duty cycle (1%–100%). It delivers precise constant-current drive for IR/white LEDs in facial recognition and surveillance lighting systems.

For engineers reviewing the TPS92200D2DDCR datasheet, TPS92200D2DDCR pinout, TPS92200D2DDCR application, or TPS92200D2DDCR equivalent, key selection considerations include its SOT-23-THIN (6) package, 99-mV ±3-mV FB reference voltage, ultra-low 1-μA shutdown current, hiccup-mode fault recovery, and dedicated analog-dimming-by-PWM architecture exclusive to the D2 variant.

Technical Context

The TPS92200D2DDCR implements peak-current-mode control with full internal compensation and fixed 1-MHz switching frequency-reducing external component count. Its dimming interface accepts a digital PWM signal (20 kHz–200 kHz), where output current scales linearly with duty cycle from 1% to 100%, enabling deep analog dimming without external DACs or op-amps.

Protection architecture includes auto-retry thermal shutdown (165°C trip, 15°C hysteresis), LED open/short detection via FB voltage thresholds (VFB_OVP = 140 mV), and dual-path overcurrent limiting on both high-side (3.3-A typical) and low-side (3-A sourcing / 1.8-A sinking) FETs-ensuring robust operation under fault conditions without latch-off.

Key Specifications

Pinout & Package

SOT-23-THIN (6-pin) package: 1.60 mm × 2.90 mm footprint, exposed pad not present, compatible with standard pick-and-place and reflow processes.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS92200D1DDCR, the TPS92200D2DDCR provides deeper, more linear dimming control from a single PWM input, while versus LM3409QMHX/NOPB it delivers higher integration, tighter current accuracy, and simpler layout - making it optimal for compact, cost-sensitive IR and UV LED systems requiring 1%–100% analog-equivalent dimming.

Availability

TPS92200D2DDCR is available at Aetrix Electronics and suitable for video surveillance, facial recognition lighting, and medical UV disinfection systems requiring stable component supply, long-term manufacturability, and automotive-grade reliability.

Supply support for TPS92200D2DDCR 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 leader specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-reliability LED driver design.

The TPS92200 product line delivers highly integrated, thermally robust synchronous buck LED drivers optimized for compact, high-efficiency illumination in security, biometrics, and industrial applications - with the D2 variant specifically engineered for single-signal, high-fidelity analog dimming.

FAQ

What dimming method does the TPS92200D2DDCR support?

The TPS92200D2DDCR supports analog dimming controlled exclusively by the duty cycle of a digital PWM signal applied to the DIM pin (20–200 kHz range). Unlike the D1 variant, it does not support direct analog voltage input or standalone PWM switching - the internal reference scales linearly from 1% to 100% based on PWM duty, enabling flicker-free deep dimming without external components.

Can the TPS92200D2DDCR operate with input voltages below 4 V?

No. The TPS92200D2DDCR has a specified minimum input voltage of 4 V per its recommended operating conditions. Below this threshold, the device enters undervoltage lockout (UVLO) and disables switching. The UVLO rising threshold is 3.7 V typical with 0.2-V hysteresis, so reliable operation requires VIN ≥ 4 V - making it unsuitable for single-cell Li-ion (<3.6 V) or alkaline battery systems without boost pre-regulation.

How is LED current set on the TPS92200D2DDCR?

LED current is set by an external sense resistor (R_SENSE) connected between the LED cathode and GND. Because the TPS92200D2DDCR maintains a precise 99-mV ±3-mV reference at the FB pin, the current is calculated as I_LED = 0.099 V / R_SENSE. For example, a 66-mΩ resistor sets 1.5-A output current. R_SENSE must be a low-inductance, ±1% tolerance metal-shunt or thin-film resistor placed adjacent to the FB pin.

Does the TPS92200D2DDCR require external compensation components?

No. The TPS92200D2DDCR features full internal compensation for its peak-current-mode control loop. No external compensation network (e.g., Type II/III compensator) is required - simplifying design, reducing component count, and improving stability across input voltage, load, and temperature variations. This allows a complete functional LED driver to be implemented with only five external components: input capacitor, output capacitor, inductor, R_SENSE, and bootstrap capacitor.

What protection features are built into the TPS92200D2DDCR?

The TPS92200D2DDCR integrates comprehensive protection: LED open-load detection (forces max duty), LED+ short-to-GND and LED short-circuit detection (triggers auto-retry), sense-resistor open/short protection, thermal shutdown (165°C trip, 15°C hysteresis), and FB overvoltage protection (140 mV threshold). All fault responses use hiccup-mode auto-retry - cycling on/off until fault clears - eliminating need for external watchdog or reset circuitry.