tda3683 NXP Semiconductors, tda3683 Datasheet - Page 9

• Manufacturer Part Number: tda3683
• Description: Tda3683 Multiple Voltage Regulator With Switch And Ignition Buffer
• Manufacturer: NXP Semiconductors

Philips Semiconductors
TDA3683_2
Product data sheet
level. In all other warning situations, the HOLD output rises to its HIGH level. In order to
generate standard CMOS logic compliant signals an external decoding circuit has to be
implemented; see
The HOLD output will be active HIGH when:
It should be noted that there is intentionally no out-of-regulation detection for REG7 since
it can be adjusted to maximum 10 V and would, in that event, activate the HOLD signal
very early.
The HOLD function includes hysteresis in order to avoid oscillations when the hold
threshold level is crossed. A schematic diagram of the HOLD function is illustrated in
Figure
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The output voltage of one or more switched regulators is out of regulation (except
REG7), due to overload or supply voltage drops
The power switch operates in the Foldback mode
In Standby or On mode the thermal shutdown is activated
In Standby or On mode the load dump protection is activated
In Standby mode a low battery voltage occurs (V
pull REG4 into regulation when switching it on.
3.
Figure
Rev. 02 — 7 October 2005
9.
Multiple voltage regulator with switch and ignition buffer
P1
) indicating that it is not possible to
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
TDA3683
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