eFuse Application Circuit (with Thermal Shutdown)

This reference design provides design guide, data and other contents of eFuse IC Application Circuit (with Thermal Shutdown) built on a small board. This circuit provides over temperature detection and protection by combining the eFuse IC and the ThermoflaggerTM (Over Temperature Detection IC).

This is a picture of eFuse Application Circuit (with Thermal Shutdown).
TCTH021BE TCTH021BE TC7SH34FU TC7SH34FU TCKE905ANA TCKE905ANA CEZ6V8 CEZ6V8 CEZ6V8 CEZ6V8 SSM3K35MFV SSM3K35MFV SSM3J35AMFV SSM3J35AMFV

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Features

  • Provides simple over temperature detection solution in addition to various eFuse IC protection functions
  • Can be combined with multiple PTC thermistors
  • Built on a small 2 x 2cm board

Description

Input Power Supply Voltage DC 2.7V to 6V
Rated Output Current 1.1A (Typ.), up to 4A with appropriate resistor setting

Design Documents

Materials for designers, such as an overview of circuit operation and explanations of design considerations. Please click on each tab to view the contents.

Design Data

Provides circuit data that can be loaded into EDA tools, PCB layout data, and data used in PCB manufacturing. Available in formats from multiple tool vendors. You can freely edit it with your preferred tool.

Used Toshiba Items

Part Number Device Category Portion Usage Description
eFuse IC Module Board・1 2.7 to 23 V/4.0 A eFuse IC, 34 mΩ, WSON8
Over Temperature Detection IC Module Board・1 10 μA, Open-drain, Over temperature detection IC
Small-signal MOSFET Module Board・1 N-ch MOSFET, 20 V, 0.18 A, 3.0 Ω@4V, SOT-723(VESM)
Small-signal MOSFET Module Board・1 P-ch MOSFET, -20 V, -0.25 A, 1.4 Ω@4.5V, SOT-723(VESM)
L-MOS VHS series Module Board・1 One-Gate Logic(L-MOS), Non-Inverter Buffer, SOT-353(USV)
Zener diode Module Board・2 6.8 V Zener Diode, SOD-523(ESC)
Power MOSFET (N-ch single 30V<VDSS≤60V) Base Board・4 N-ch MOSFET, 40 V, 0.00085 Ω@10V, SOP Advance(N), U-MOSⅨ-H
Load switch IC Base Board・4 2.7 to 28 V External MOSFET Driver IC, WCSP6E
L-MOS SHS series (TC74LCX-equivalent) Base Board・4 One-Gate Logic(L-MOS), Schmitt Buffer, SOT-363(US6)
74HC CMOS logic IC series Base Board・2 Dual Monostable Multivibrator, SOIC16
Point regulator (single output) Base Board・1 200 mA Fixed Output LDO Regulator, 4.8 V, SOT-25(SMV)
Bias resistor built-in transistor (BRT) Base Board・1 NPN Bias Resistor Built-in Transistors (BRT), 10 kΩ/10 kΩ, SOT-723(VESM)
Bias resistor built-in transistor (BRT) Base Board・4 PNP Bias Resistor Built-in Transistors (BRT), 10 kΩ/10 kΩ, SOT-723(VESM)
Switching diode Base Board・2 80 V/0.1 A Switching diode, SOD-523(ESC)

Related Documents

We provide materials useful for designing and considering similar circuits, such as application notes for installed products. Please click on each tab to view the contents.

Related Reference Design

Over Temperature Detection IC Thermoflagger™ Application Circuit (TCTH021BE / Open-drain type)
Over Temperature Detection IC Thermoflagger™ Application Circuit (TCTH021AE / Push-pull type)
Application Circuits of eFuse IC TCKE805 Series

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