Texas Instruments TLC59211IPWR

Overview

TLC59211IPWR from Texas Instruments is an 8-bit DMOS sink current driver IC designed for LED and solenoid load control in 5-V systems. It delivers up to 200 mA per channel at 30 V output voltage, features integrated parasitic clamp diodes, and operates across –40°C to 85°C. It is used in LED display matrix drivers where individual cathode current sinking enables precise pattern illumination.

For engineers reviewing the TLC59211IPWR datasheet, TLC59211IPWR pinout, TLC59211IPWR application, or TLC59211IPWR equivalent, key selection criteria include per-channel current capability (200 mA max), high-voltage output tolerance (30 V), latch-up immunity (>250 mA), ESD robustness (2000-V HBM), and TSSOP-20 package thermal performance (RθJA = 94.3°C/W).

Technical Context

The TLC59211IPWR implements eight independent DMOS N-channel sink switches, each controlled directly by a logic-level input (D1–D8). No internal shift register or latching logic is present - inputs drive outputs synchronously with no clock or data serialization.

Each output features a parasitic body diode that clamps inductive kickback during solenoid de-energization, enabling direct drive of relays and lamps without external flyback diodes. Output ON-state resistance is 2 Ω (typ) at VCC = 4.5 V and IO = 100 mA, supporting low-loss current sinking.

Key Specifications

Pinout & Package

TLC59211IPWR is housed in a 20-pin TSSOP (PW) package measuring 6.50 mm × 4.40 mm with 0.65-mm lead pitch and 1.2-mm maximum height. The package includes exposed thermal pad (non-electrical) and is RoHS-compliant with NiPdAu lead finish and MSL Level-1 rating.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit sink driver applications.

Compared with ULN2803A and TLC5916IPW, the TLC59211IPWR uniquely combines DMOS efficiency, 30-V output tolerance, integrated clamp diodes, and parallel-input simplicity - making it optimal for mixed-load (LED + relay) industrial control where thermal density and BOM reduction are prioritized.

Availability

TLC59211IPWR is available at Aetrix Electronics and suitable for LED display systems, industrial PLC I/O modules, and automotive indicator lamp circuits requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.

Supply support for TLC59211IPWR 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 digital signal technologies, with over 50 years of innovation in industrial, automotive, and communications markets.

The TLC59211IPWR belongs to TI's LED and solenoid driver product line, engineered specifically for high-voltage, high-current parallel-interface load switching in space-constrained industrial control and display applications.

FAQ

What is the maximum continuous current per channel for TLC59211IPWR at 85°C?

The TLC59211IPWR supports 200 mA per channel only at ≤24% duty cycle when all eight outputs are active simultaneously in the TSSOP package at 85°C. At 100% duty cycle, the limit drops to 95 mA per channel. These derating curves are defined in Figure 5 of the SCLS712A datasheet and must be applied based on actual thermal design and number of concurrently active channels.

Does TLC59211IPWR include an internal shift register or latching logic?

No, the TLC59211IPWR has no internal shift register, latch, or clock circuitry. It is a direct-logic sink driver: each Dn input pin controls its corresponding Yn output pin in real time. To implement serial-to-parallel conversion, an external shift register such as SN74LV595A must be used upstream of the TLC59211IPWR inputs.

Can TLC59211IPWR drive 24-V incandescent lamps directly?

Yes, the TLC59211IPWR can drive 24-V incandescent lamps directly due to its 30-V Vds rating and 200 mA per-channel current capability. However, inrush current must be considered: cold filament resistance is ~1/10th of hot resistance, so peak current may exceed 200 mA momentarily. Use soft-start or current limiting if lamp life or device reliability is critical.

Is a pull-up resistor required on the Yn outputs of TLC59211IPWR?

Yes, each Yn output is an open-drain (high-impedance when OFF) and requires an external pull-up resistor to VLED or the load supply rail. The value is determined by desired LED current or load voltage drop - e.g., for a 20-mA LED with 24-V supply and 2-V forward voltage, use R = (24 V − 2 V) / 0.02 A = 1.1 kΩ. Pull-ups are mandatory for proper HIGH-state logic level definition.

What thermal considerations apply to TLC59211IPWR in TSSOP-20 package?

The TLC59211IPWR in TSSOP-20 has RθJA = 94.3°C/W. At full 200 mA per channel (8 channels = 1.6 A total), power dissipation reaches ~320 mW minimum (based on 2 Ω R_ON). This yields ~30°C junction rise above ambient - acceptable at 85°C ambient only with adequate copper pour and airflow. TI recommends ≥100 mm² of 1-oz copper connected to the exposed pad (if used) and thermal vias to inner ground planes.