Datasheet TDE1747 Datasheet (ST)

Interface circuit - relay and lamp-driver

Features

■ Open ground protection

■ High output current

■ Adjustable short-circuit protection to ground

■ Thermal protection with hysteresis to avoid the

intermediate output levels

■ Large supply voltage range: + 8V to +45V

■ Short-circuit protection to V

Description

The TDE1747 is a monolithic comparator
designed for high current and high voltage
applications, specifically to drive lamps, relays,
stepping motors.

CC

SO14

TDE1747

DIP-8

This device is essentially blow-out proof. Current
limiting is available to limit the peak output current
to safe values.
Adjustment only requires one external resistor. In
addition, thermal shut down is provided to keep
the IC from overheating. If internal dissipation
becomes too high, the driver will shut down to
prevent excessive heating. TDE1747 has an open
ground protection. The output is also protected
from shortcircuits with the positive power supply.
The device operates over a wide range of supply
voltages from standard

± 15V operational

amplifier supplies down to the single +12V or
+24V used for industrial electronic systems.

Order codes

Part number Temp range, ° CPackage Packing

TDE1747DP -25°C to +85°C DIP-8 Tube

TDE1747FP -25°C to +85°C SO14 Tube

TDE1747FPT -25°C to +85°C SO14 Tape and reel

.

September 2006 Rev 1 1/17

www.st.com

17

Contents TDE1747

Contents

1 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3 Pin connections and schematic diagrams . . . . . . . . . . . . . . . . . . . . . . . . . 5

4 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

5 Typical applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

6 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2/17

TDE1747 Maximum ratings

1 Maximum ratings

1.1 Absolute maximum ratings

Table 1. Absolute maximum ratings

Symbol Parameter Value Unit

V

V

P

T

oper

T

STG

1. 60V, t ≤ 10ms

Supply voltage

CC

VI

Input voltage 50 V

Differential input voltage 50 V

ID

I

Output current 1 A

O

Power dissipation (TA = +25°C)

tot

Operating Free–air Temperature Range – 25 to + 85 °C

Storage temperature range – 65 to + 150 °C

Internally Limited W

50

(1)

1.2 Thermal data

Table 2. Thermal data

Symbol Description Value Unit

R

R

thJA

thJC

R

R

Thermal Resistance Junction-ambient 120 °C/W

Thermal Resistance Junction-case 50 °C/W

Junction-ceramic Substrate (case glued to substrate) SO14 90 °C/W

th

Junction-ceramic Substrate (case glued to substrate, substrate

th

temperature maintained constant) SO14

65 °C/W

V

3/17

Electrical characteristics TDE1747

2 Electrical characteristics

TJ = −25 to +85°C, VCC = 8 to 45 V, unless otherwise specified (note 1)

Table 3. Electrical characteristics

Symbol Parameter Min Typ Max Unit

V

I

V

I(max)

Input offset voltage

IO

I

Input bias current – 0.1 1.5 mA

IB

Supply Current (V

High level

CC

Low level

Common–mode input voltage range 2 –

(1)(2)

= +24V, IO = 0)

CC

– 2 50 mV

4

–
–

2

6
4

VCC–2

mA
mA

Short–circuit Current Limit (TA = 25°C, VCC = +24V)

SC

R

SC

R

= ∞

SC

–

480

–

35

50

–

mA
mA

I

= 1.5Ω

Output saturation voltage (output low)

+

– V

I

= + 25°C

J

= + 25°C

A

-

≥ 50mV, R

I

CC

SC

= +24V, TA = + 25°C)

= 0, IO = 300mA, )

–

1.15

–

1.05

1.4

1.3

– 0.01 10 µA

(V

CC–VO

T

V

T

Output leakage current (output high)

I

OL

(VO = 0, V

1. For operating at high temperature, the TDE1747, must be derated based on a +150°C maximum junction temperature and
junction-ambient thermal resistance of 120°C/W for DIP-8 and 100°C/W for the SO14.

2. The offset voltage given is the maximum value of input voltage required to drive the output voltage within 2V of the ground
or the supply voltage.

V

V
V

4/17

TDE1747 Pin connections and schematic diagrams

3 Pin connections and schematic diagrams

Figure 1. Pin connections (top views)

Figure 2. Schematic diagram

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Pin connections and schematic diagrams TDE1747

Figure 3. Test circuit

Figure 4. Simplified schematic

6/17

TDE1747 Typical characteristics

4 Typical characteristics

Figure 5. Available output current vs

limiting resistors

Figure 7. Short-circuit current vs

case temperature

Figure 6. Peak short-circuit vs

limiting resistor

Figure 8. Minimum limiting resistor value vs

supply voltage

7/17

Typical characteristics TDE1747

Figure 9. Output current vs

output saturation voltage

Figure 11. Supply current vs

junction temperature

Figure 10. Supply current vs supply voltage

Figure 12. Safe operating area

(not repetitive surge)

8/17

TDE1747 Typical characteristics

Figure 13. Response time

9/17

Typical applications TDE1747

5 Typical applications

Figure 14. Base circuit

Figure 15. Output current extension (5A)

10/17

TDE1747 Typical applications

Figure 16. Driving low impedance relays (IO = 300mA)

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Wavefor ms TDE1747

6 Waveforms

Figure 17. Input current vs time

Figure 18. Response time with zener diode

Figure 19. Response time without zener diode

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TDE1747 Package mechanical data

7 Package mechanical data

In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a Lead-free second level interconnect. The category of
second level interconnect is marked on the package and on the inner box label, in compliance
with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also
marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are
available at: www.st.com

13/17

Package mechanical data TDE1747

Table 4. SO14 Mechanical data

Dim.

Min Typ Max Min Typ Max

A 1.35 1.75 0.053 0.069

A1 0.10 0.30 0.004 0.012

A2 1.10 1.65 0.043 0.065

B 0.33 0.51 0.013 0.020

C 0.19 0.25 0.007 0.01

(1)

D

8.55 8.75 0.337 0.344

E 3.80 4.0 0.150 0.157

e 1.27 0.050

H 5.8 6.20 0.228 0.244

h 0.25 0.50 0.01 0.02

L 0.40 1.27 0.016 0.050

k 0° (min.), 8° (max.)

ddd 0.10 0.004

1. “D” dimension does not include mold flash, protusions or gate burrs. Mold flash, protusions or gate burrs shall not exceed

0.15mm per side.

mm Inch

Figure 20. Package dimensions

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0016019 D

TDE1747 Package mechanical data

Table 5. DIP-8 Mechanical data

Dim.

Min Typ Max Min Typ Max

A 3.32 0.131

a1 0.51 0.020

B 1.15 1.65 0.045 0.065

b 0.356 0.55 0.014 0.022

b1 0.204 0.304 0.008 0.012

D 10.92 0.430

E 7.95 9.75 0.313 0.384

e 2.54 0.100

e3 7.62 0.300

e4 7.62 0.300

F 6.6 0.260

I 5.08 0.200

L 3.18 3.81 0.125 0.150

Z 1.52 0.060

mm Inch

Figure 21. Package dimensions

15/17

Revision history TDE1747

8 Revision history

Table 6. Revision history

Date Revision Changes

20-Sep-2006 1 New template

16/17

TDE1747

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