SS8841T-ET-TP Chip Addresses Dual Needs of Thermal Management and Environmental Compatibility

^{September 3, 2025 News — Against the backdrop of growing demand for micro motor drives and precision control, the single-channel H-bridge motor driver SS8841T-ET-TP is emerging as an ideal solution for portable devices and consumer electronics, leveraging its high integration and exceptional performance. Utilizing advanced CMOS process technology, the chip supports a wide voltage input range of 2.7V to 13V, delivers a continuous output current of 1.5A with a peak current of up to 2A, providing efficient motor drive support for micro pumps, camera modules, and smart home devices.}

^{The SS8841T-ET-TP adopts a compact TSSOP-16 package measuring only 5.0mm×4.4mm with a thickness of 1.2mm, making it particularly suitable for space-constrained portable devices. The chip integrates low-resistance MOSFET power switches, with a total high-side + low-side on-resistance of only 0.8Ω, significantly reducing power loss and achieving system efficiency up to 92%. Its wide voltage input range allows direct power supply from lithium batteries or USB sources, greatly simplifying system power design.}

^{The SS8841T-ET-TP motor driver chip supports a flexible PWM control interface with an operating frequency of up to 500kHz, enabling precise speed regulation and bidirectional control for DC motors and stepper motors. This makes it suitable for fine-tuned driving requirements in automation equipment and consumer electronics. The chip features built-in current regulation functionality, allowing the output current limit threshold to be easily set via an external resistor, effectively preventing motor overload or circuit damage from overcurrent and reducing the need for external protection circuitry. In low-power standby mode, its current consumption is only 1μA, significantly extending the battery life of handheld devices and other battery-powered applications. Additionally, the chip integrates comprehensive safety protection mechanisms, including thermal shutdown (to prevent chip overheating), undervoltage lockout (to avoid abnormal operation under low voltage), and overcurrent protection (to handle sudden current surges), ensuring the overall stability and reliability of the drive system.}

^{1.Medical Devices: Used for micro-fluid control in insulin pumps and portable monitors.}

^{2.Consumer Electronics: Drives auto-focus mechanisms and optical image stabilization modules in smartphones.}

^{3.Smart Home Systems: Controls motor drives for smart locks and enables precise control of curtain motors.}

^{4.Industrial Automation: Suitable for positioning control in micro robotic arms and precision instruments.}

^{1.The SS8841T-ET-TP adopts a TSSOP-16 package with precisely designed and practical pin functions. The VCC pin serves as the positive power supply input, supporting a wide voltage range of 2.7V to 13V, and requires an external 10μF ceramic capacitor and 0.1μF decoupling capacitor during operation. The GND pin is the power ground terminal, and it is recommended to ensure full connection to the PCB ground plane to guarantee system stability.}

^{2.The OUT1 and OUT2 pins form an H-bridge output, directly connected to the motor terminals with a maximum continuous current of 1.5A. Trace width must be optimized to ensure current-carrying capacity. The nSLEEP pin is the enable control input (active low), with an internal 100kΩ pull-up resistor; when left floating, the chip automatically enters sleep mode.}

^{3.The PHASE pin controls motor direction: high level sets OUT1 to positive voltage, low level sets OUT2 to positive voltage. The MODE pin selects the operating mode, supporting PWM control and direct mode, with an external resistor to set the current limit threshold.}

^{4.The nFAULT pin is an open-drain fault indicator outputting low level during overtemperature, overcurrent, or undervoltage events, requiring an external 10kΩ pull-up resistor. Other pins include current sense and reference voltage settings, providing flexible configuration options for the system.}

^{5.This meticulous pin layout enables the SS8841T-ET-TP to deliver complete motor drive functionality within a compact space while ensuring signal integrity and thermal performance, offering a reliable hardware foundation for various micro motor control applications.}

^{1.Power Input: Place a 10μF ceramic capacitor in parallel with a 0.1μF decoupling capacitor as close as possible to the VCC pin.}

^{2.Motor Output: Add a 0.1μF ceramic capacitor to filter noise, and incorporate Schottky diodes on each bridge arm for freewheeling protection.}

^{3.Current Sensing: Use a 0.1Ω/0.5W precision resistor for current detection.}

^{4.Power Ground Trace Width: Ensure a minimum width of 1mm for power ground traces.}

^{The eTSSOP28 (Extended Thin Shrink Small Outline Package, 28-pin) is a common integrated circuit package type suitable for high-density surface mount designs. The following are the key dimensional parameters of this package (based on JEDEC standards):}

• ^{​Package Characteristics:}
• ^{Number of Pins: 28}
• ^{Pin Pitch: 0.5 mm (≈19.69 mil)}
• ^{Package Width: 4.4 mm (≈173.2 mil)}
• ^{Package Length: 6.5 mm (≈255.9 mil)}
• ^{Package Thickness: 0.8 mm (≈31.5 mil)}
• ^{Pad Width: 0.22–0.38 mm (typical)}

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^Notes:

^{Actual layout should follow the specific chip datasheet, as minor variations may exist between manufacturers.}

^{It is recommended to use IPC-7351 standard pad designs to improve soldering reliability.}

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