STMicroelectronics E-L6452

Overview

E-L6452 from STMicroelectronics is a dual-channel 13×16 matrix ink jet print head driver IC with integrated thermal sensing, nozzle check, 8-bit A/D and 5-bit D/A converters, ±4 kV ESD-protected high-side DMOS outputs, and internal address scanning counter. It delivers 400 mA per power line (16 channels) at 33% duty cycle for printing or 66% for pre-heating, supports two independent print heads (A/B), and operates across 0–70°C in PQFP100 package.

For engineers reviewing the E-L6452 datasheet, E-L6452 pinout, E-L6452 application, or E-L6452 equivalent, this device is selected for precision thermal management in industrial inkjet printers, electrical nozzle diagnostics, and synchronized dual-head driving where column current sourcing, analog temperature feedback, and robust output protection are critical design requirements.

Technical Context

The E-L6452 integrates two independent high-side DMOS power stages-each capable of 400 mA continuous output into 16 column lines-with separate 13-line address drivers (HSA/HSB) supporting MOSFET-capacitive loads only. Its internal up/down counter and 4-to-13 decoder enable programmable row scanning, and can be disabled for external control via EnIC = 0.

Thermal measurement uses a programmable 12–13.5 mA constant current source (set by R_EXT) injected into aluminum resistors embedded in print heads A or B, with voltage sensed at VxA/VxB, amplified (g₁=1.2, g₂=3), offset-compensated by a 5-bit DAC (32-step V_OFFSET), and digitized by an 8-bit SAR ADC referenced to V_REF = 5 V ±1.5%.

Key Specifications

Pinout & Package

PQFP100 package with 100 leads; 0.65 mm pitch; exposed thermal pad not electrically connected; RoHS-compliant ECOPACK® construction.

Key Features

Applications

Equivalent & Alternatives

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

Compared with E-L6452, TB6584FG offers lower integration and no thermal闭环 capability, while DRV8876PWPR lacks essential matrix addressing, analog sensing, and nozzle test functions-making E-L6452 uniquely suited for thermally managed dual-head inkjet systems.

Availability

E-L6452 is available at Aetrix Electronics and suitable for industrial inkjet printers, label & packaging production lines, and POS receipt systems requiring stable component supply, long-lifecycle assurance, and traceable sourcing for mission-critical printing operations.

Supply support for E-L6452 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, mixed-signal, power, and microcontroller solutions for industrial, automotive, and consumer markets.

E-L6452 belongs to ST's dedicated print head driver product line, engineered specifically for high-reliability thermal inkjet systems requiring integrated current sourcing, analog sensing, and robust output protection in compact PQFP packages.

FAQ

What is the maximum allowable V_STEP-UP voltage for E-L6452?

The absolute maximum rating for V_STEP-UP is 28 V, and the typical operating value is V_C + 11 V (e.g., 23.5 V when V_C = 12.5 V). This voltage directly drives the high-side DMOS output stage and must remain within specification to avoid latch-up or permanent damage to the power transistors.

How does the electrical nozzle check (NcEn) function interact with LongPulse/ShortPulse?

When NcEn is high, all OUTPUT0–15 are disabled, and NCOUT reports open-load faults. The NcEn signal must be asserted ≥160 ns before LongPulse/ShortPulse activation (per T_set spec), and its deassertion has zero hold time requirement (T_hold = 0 ns), enabling rapid transition between normal drive and diagnostic modes.

Can both print heads operate simultaneously, or is strict time-division multiplexing required?

Strict time-division multiplexing is enforced: only one head (A or B) may be active at any time. Channel selection is controlled by ChSel and EnCh-setting EnCh = low enables the selected channel, while EnCh = high disables both. Simultaneous activation is electrically prohibited by internal logic.

What is the role of the 5-bit DAC in thermal measurement accuracy?

The 5-bit DAC adjusts V_OFFSET in 32 discrete steps (0–31) to compensate for initial aluminum resistor tolerance (±15%) and process variation. This allows precise nulling of baseline voltage before amplification, improving effective temperature resolution to ±1.5°C over the full 0–70°C operating range.