tnd027sw Sanyo Semiconductor Corporation, tnd027sw Datasheet - Page 6

• Manufacturer Part Number: tnd027sw
• Description: Lamp, Solenoid, Motor Driver
• Manufacturer: Sanyo Semiconductor Corporation

Operation Description
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The output power MOSFET will be turned on when the input voltage exceeds the input threshold voltage (4 to 6V
is recommended), and then the lamp will be turned on by the current flowing to the lamp. Conversely, the output
power MOSFET will be turned off when the input voltage goes below the input threshold voltage, and the lamp
will be turned off.
The inrush current that occurs during normal lamp operation is limited to a preset value by the built-in overcurrent
protecting circuit, which makes the lamp life longer.
The internal overcurrent protection function limits the current of output power MOSFET when output current of at
least the overcurrent detecting current value flows at load short. Besides, if the device temperature exceeds the
allowable power dissipation, overheat protection function protects the power switch from being broken down by
turning off the current of output power MOSFET when Tj comes to 150°C (typical).
As an example of application circuit, DC voltage can also be controlled as a solenoid drive.
The diode between OUT and GND in the block diagram is parasitic diode of the MOSFET.
Not apply a voltage on IN terminal during the period when OUT voltage is lower then GND voltage when driving
a solenoid or a motor.
Be sure connect a diode between OUT terminal and GND terminal when you want to apply a voltage on IN
terminal under the above-stated state (that is, OUT Voltage < GND Voltage).
This catalog provides information as of December, 2007. Specifications and information herein are subject
to change without notice.
SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using
products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition
ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd.
products described or contained herein.
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semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or
malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise
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limited to protective circuits and error prevention circuits for safe design, redundant design, and structural
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product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the
SANYO Semiconductor Co.,Ltd. product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed
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TND027SW, 027TD
PS
No.7437-6/6