tda3609jr NXP Semiconductors, tda3609jr Datasheet - Page 6

• Manufacturer Part Number: tda3609jr
• Description: Multiple Voltage Regulator With Switch And Ignition Buffers
• Manufacturer: NXP Semiconductors

Philips Semiconductors
The power switch can also be controlled by means of a
separate enable input (pin 11).
All output pins are fully protected. The regulators are
protected against load dump (regulator 1 and 3 will switch
off at supply voltages >18 V) and short-circuit (foldback
current protection).
The switch contains a current protection, but this
protection is delayed at short-circuit condition for at least
10 ms. During this time the output current is limited to a
peak value of at least 3 A and 2 A continuous (V
1997 Aug 15
handbook, full pagewidth
Multiple voltage regulator with switch and
ignition buffers
ignition 1
ignition 1
ignition 2
ignition 2
output
output
input
input
V P
V P
3.25 V
100 V
100 V
7.0 V
4.5 V
1.1 V
5.0 V
2.2 V
2.0 V
5.0 V
50 V
50 V
Fig.3 Timing diagram ignition Schmitt triggers.
Enable Schmitt trigger ignition 2
Enable Schmitt trigger ignition 1
P
load dump
18 V).
6
At supply voltages >17 V the switch is clamped at
maximum 16 V (to avoid external connected circuitry being
damaged by an overvoltage) and the switch will switch off
at load dump.
By means of two independent ignition Schmitt triggers and
ignition output buffers (one open collector and one
push-pull output), interfacing with the microcontroller can
be accomplished (simple full/semi on/off logic
applications). The ignition 1 output is inverted.
The total timing diagrams are shown in Figs 3 and 4.
load dump
Preliminary specification
TDA3609JR
MGK611