|
|
Part: TDF1778SP
Category:
Power Management
-> Motor Controller/Drivers
-> Power Controllers & Motor Drivers
Description: Dual 2-A Source Driver
Company: ST Microelectronics, Inc.
Datasheet: Download TDF1778SP datasheet File size : 455 kB
Request For quote: Find where to buy TDF1778SP
Datasheet text preview:
®
TDF1778
DUAL 2-A SOURCE DRIVER
. . . . .
OUTPUT CURRENT UP TO 2.5 A WIDE RANGE OF SUPPLY VOLTAGES : + 8 to + 32 V CAN WITHSTAND OVERVOLTAGES OF AS HIGH AS 60 V BETWEEN VCC AND GROUND INTERNAL ZENER DIODE PROVIDES FAST SWITCHING OF INDUCTIVE LOADS OUTPUT VOLTAGE CAN BE LOWER THAN GROUND
DESCRIPTION The TDF1778 is a dual source driver delivering high output currents and capable to drive any type of loads (Electrovalves, contactors, lamps). This device is essentially blow-out proof, each output is protected against short-circuits. If internal dissipation becomes too high, drivers will shut down to prevent excessive heating. An "ALARM" output is provided to indicate the action of the thermal protection. To reactivate the power outputs, the reset input must be forced to low state. "SENSE" information of both power outputs are ORed together and then processed internally. A "STROBE" input is also provided to offer the possibility of disabling the power outputs. PI N CONNECTION
MULTIWATT11 ORDERING NUMBER : TDF1778SP
1 2 3 4 5 6 7 8
- Output 1 - VCC - Output 2 - N.C. - Strobe - Ground - Input 2 - Sense output
9 - Alarm output 10 - Reset input 11 - Input 1
September 2003
1/10
TDF1778
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
Symbol VC C VI, Vreset Vstrobe IO Ptot Toper Tj Supply Voltage Input Voltage (pins 7, 10 and 11) Strobe Input Voltage Output Current Power Dissipation Operating Ambient Temperature Range Junction Temperature Parameter Value 35 V (60 V/10 ms) 30 to + 50 0.5 to VCC Internally Limited Internally Limited 40 to + 85 + 150 Unit V V V A W °C °C
THERMAL DATA
Symbol Rth(jc) Rth(ja) Parameter Junction-case Thermal Resistance Junction-ambient Thermal Resistance Max. Max. Value 3 40 Unit °C/W °C/W
2/10
TDF1778
ELECTRICAL CHARACTERISTICS (VCC = + 24V, 40oC < Tj < + 85oC, unless otherwise specified)
Symbol VC C ICC VIL VIH VI IIH IIL VOH VOL VCC VO1 VCC VO2 IOL VCC VO1 VCC VO2 IO1, IO2 IOalarm IOsense IIHsense VIHsense Power Supply Voltage Power Supply Current (pin 6), I01 = I02 = 2A Logic Input Voltage (pins 7, 10, 11) Logic Input Threshold (pin 5) High Level Input Current (pins 7, 10, 11) VI = + 2V Low Level Input Current (pins 7, 10, 11) VI = + 0.8V High Level Logic Output Voltage (pins 8, 9) I(8) = I(9) = 30 µA Low Level Logic Output Voltage (pins 8, 9) I(8) = I(9) = 2 mA Output Saturation Voltage (V(7) high, V(11) high, IO = 2A) Low Level Input Current (pins 1, 3) V(7) Low, V(11) Low, VO = 0V Switchoff Output Voltage (inductive load) Available Output Current (pins 1, 3), V(7) High, V(11) High, VCC VO = 32V, Tj = 25°C Available "Alarm" Output Current, V(9) = + 4V Available "Sense" Output Current, V(8) = + 4V Output Sensing High Level Input Current (pins 1, 3) VI = + 2V High Level "Sense" Input Voltage (pins 1, 3) 40 100 4 4 0.8 8 8 1 1.9 2 2.5 mA mA mA V Parameter Min. 8 2 5 2.4 Typ. 0.8 20 0 4 1.5 400 44 Max. 32 20 0.8 50 +5 V 0.4 V 1.8 1000 48 µA V mA Unit V mA V V µA µA V
3/10
Others parts begin by td
TD-1 TD-2 TD-3 TD-4 TD-5 TD-6 TD-7 TD-8 TD-9 TD-10 TD-11 TD-12 TD-13 TD-14 TD-15 TD-16 TD-17 TD-18 TD-19 TD-20 TD-21
|
|
|
