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TDE3247-TDE3247FP-TDE3247FPT
Interface circuit (relay and lamp driver)
June 2006 Rev 2 1/15
Features High output current Adjustable short-circuit protection to ground Internal thermal protection with hysteresis to
avoid the intermediate output levels Large supply voltage range: 8 to 30V Short-circuit protection to VCC Open ground protection
DescriptionThe TDE3247 is a monolithic amplifier designed
for high current and high voltage applications,
specifically to drive lamps, relays and stepping
motors.
The Device is essentialy blow-out proof. Current
limiting is available to limit the peak output current
to a safe value, the adjustment only required an
external resistor.
In addition, thermal shut-down is provided to keep
the IC from overheating.
If external dissipation becomes too high, the
driver will shut-down to prevent excessive
heating.
The output is also protected against short-circuit
with the positive power supply.
The device operates over a wide range of supply
voltage from standard ±15V operational amplifier
supplies down to the single 12V or 24V used for
industrial electronic systems.
TDE3247Interface circuit (relay and lamp driver)
Order codes
Contents TDE32472/15
Contents Schematic diagram and pin connections . . . . . . . . . . . . . . . . . . . . . . . . 3 Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53.1 Electrical characteristics (curves) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
TDE3247 Schematic diagram and pin connections 3/15 Schematic diagram and pin connections
Figure 1. Schematic diagram
Figure 2. Pin connections
Electrical ratings TDE3247
4/15
2 Electrical ratings
Table 1. Absolute maximum ratings
Table 2. Thermal data
TDE3247 Electrical characteristics 5/15
3 Electrical characteristics
(-25°C ≤ TA 85°C, 8V ≤ VCC ≤ 30V, IO ≤ 150mA, TJ ≤ 150°C, unless otherwise specified) Note: 1
Note: 1 For operating at high temperatures, the device must be derated based on a 150°C
maximum junction and a junction to ambient thermal resistance of 110°C/W The offset voltage given in the maximum value of input voltage required to drive the output
voltage within 2V of the ground or the supply voltage.
Table 3. Electrical characteristics
Electrical characteristics TDE3247
6/15
3.1 Electrical characteristics (curves)
Figure 3. Available output current vs. limiting
resistor
Figure 4. Supply current vs. junction
temperature
Figure 5. Saturation output voltage vs. case
temperature and available output
current
Figure 6. Supply current vs. supply voltage
TDE3247 Electrical characteristics 7/15
Figure 7. Supply voltage vs. minimum limiting
resistor value
Figure 8. Response time
Figure 9. Response time
Application circuit TDE3247
8/15
4 Application circuit
Figure 10. Basic application circuit
Figure 11. Output current boosting (5A)
