TA8429HQ Toshiba, TA8429HQ Datasheet - Page 3

• Manufacturer Part Number: TA8429HQ
• Manufacturer: Toshiba

Specifications of TA8429HQ

• Functions: Driver
• Vopmax (vm*): 27V (30V)
• Io (lpeak): 3A (4.5A)
• Channel: 1-ch
• Pwm Drive: n/a
• Package: HZIP12
• Rohs Compatible†: yes‡

How Multi-Protection Works
Overheat Protection
The TA8429H/HQ incorporates two protection functions: over-current (ISD) and overheat (TSD).
Note 1: These protection functions are only a means of temporarily avoiding some output short circuits or other
Note 2: If used under conditions where the absolute maximum ratings are exceeded, the IC may break down before
● Basic operation
● Explanation of the operation
is equal to or lower than the TSD detection temperature. If the junction temperature becomes higher than
the TSD detection temperature, the output enters a high-impedance state regardless of the level of the input
signal.
lower than the internal reference voltage, the control logic is directed to turn off the output transistor. While
the V
The input signal of the IC controls the output while the junction temperature (chip temperature) of the IC
The junction temperature is detected by monitoring the V
the protection circuits start operating.
abnormal conditions and are not guaranteed to prevent damage to the IC.
F
is higher than the reference voltage, the input signal at pins 1 and 2 controls the logic section.
(TSD)
Control logic
3
F
of a diode on the chip. When the V
TA8429H/HQ
2010-02-23
F
becomes