L293D

Part: L293D, L293DD

Type: Push-Pull Four Channel Driver with Diodes

Key Specs:

• Output Current Capability: 600mA per channel
• Peak Output Current (non repetitive): 1.2A per channel
• Supply Voltage (Absolute Max): 36 V
• Logic Supply Voltage (Absolute Max): 36 V
• Input Low Voltage: up to 1.5 V
• Switching Frequency: up to 5 kHz

Features:

• 600mA output current capability per channel
• 1.2A peak output current (non repetitive) per channel
• Enable facility
• Overtemperature protection
• Logical "0" input voltage up to 1.5 V (high noise immunity)
• Internal clamp diodes
• Accepts standard DTL or TTL logic levels
• Designed to drive inductive loads and switching power transistors
• Two bridges, each pair of channels equipped with an enable input
• Separate supply input for logic

Applications:

• Driving inductive loads (relays, solenoids, DC and stepping motors)
• Driving switching power transistors
• Switching applications at frequencies up to 5 kHz

Package:

• L293D: 16 lead plastic Powerdip 16 package (Max D: 20.0 mm, Max E: 8.80 mm, Max F: 7.10 mm, Max I: 5.10 mm, Max L: 3.30 mm, Max Z: 1.27 mm)
• L293DD: 20 lead surface mount package

Symbol	Parameter	Value	Unit
VS	Supply Voltage	36	V
VSS	Logic Supply Voltage	36	V
Vi	Input Voltage	7	V
Ven	Enable Voltage	7	V
Io	Peak Output Current (100 µs non repetitive)	1.2	A
Ptot	Total Power Dissipation at Tpins = 90 °C	4	W
Tstg, Tj	Storage and Junction Temperature	– 40 to 150	°C

Symbol	Decription	DIP	SO	Unit
Rth j-pins	Thermal Resistance Junction-pins max.	–	14	°C/W
Rth j-amb	Thermal Resistance junction-ambient max.	80	50 (*)	°C/W
Rth j-case	Thermal Resistance Junction-case max.	14	–
(*) With 6sq. cm on board heatsink.

ELECTRICAL CHARACTERISTICS (for each channel, VS = 24 V, VSS = 5 V, Tamb = 25 °C, unless otherwise specified)

Symbol	Parameter	Test Conditions	Min.	Typ.	Max.	Unit
VS	Supply Voltage (pin 10)		VSS		36	V
VSS	Logic Supply Voltage (pin 20)		4.5		36	V
IS	Total Quiescent Supply Current	Vi = L ; IO = 0 ; Ven = H		2	6	mA
	(pin 10)	Vi = H ; IO = 0 ; Ven = H		16	24	mA
		Ven = L			4	mA
ISS	Total Quiescent Logic Supply	Vi = L ; IO = 0 ; Ven = H		44	60	mA
	Current (pin 20)	Vi = H ; IO = 0 ; Ven = H		16	22	mA
		Ven = L		16	24	mA
VIL	Input Low Voltage (pin 2, 9, 12, 19)		– 0.3		1.5	V
VIH	Input High Voltage (pin 2, 9,	VSS ≤ 7 V	2.3		VSS	V
	12, 19)	VSS > 7 V	2.3		7	V
IIL	Low Voltage Input Current (pin 2, 9, 12, 19)	VIL = 1.5 V			– 10	µA
IIH	High Voltage Input Current (pin 2, 9, 12, 19)	2.3 V ≤ VIH ≤ VSS – 0.6 V		30	100	µA
Ven L	Enable Low Voltage (pin 1, 11)		– 0.3		1.5	V
Ven H	Enable High Voltage (pin 1, 11)	VSS ≤ 7 V	2.3		VSS	V
		VSS > 7 V	2.3		7	V
Ien L	Low Voltage Enable Current (pin 1, 11)	Ven L = 1.5 V		– 30	– 100	µA
Ien H	High Voltage Enable Current (pin 1, 11)	2.3 V ≤ Ven H ≤ VSS – 0.6 V			± 10	µA
VCE(sat)H	Source Output Saturation Voltage (pins 3, 8, 13, 18)	IO = – 0.6 A		1.4	1.8	V
VCE(sat)L	Sink Output Saturation Voltage (pins 3, 8, 13, 18)	IO = + 0.6 A		1.2	1.8	V
VF	Clamp Diode Forward Voltage	IO = 600nA		1.3		V
tr	Rise Time (*)	0.1 to 0.9 VO		250		ns
tf	Fall Time (*)	0.9 to 0.1 VO		250		ns
ton	Turn-on Delay (*)	0.5 Vi to 0.5 VO		750		ns
toff	Turn-off Delay (*)	0.5 Vi to 0.5 VO		200		ns

^(*) See fig. 1.

TRUTH TABLE (one channel)

Input	Enable (*)	Output
H	H	H
L	H	L
H	L	Z
L	L	Z

Z = High output impedance

Figure 1: Switching Times

Figure 2: Junction to ambient thermal resistance vs. area on board heatsink (SO12+4+4 package)

^(*) Relative to the considered channel

| DIM. | | mm | | inch | |------|------|-------|------|-------|-------|-------| | | MIN. | TYP. | MAX. | MIN. | TYP. | MAX. | | a1 | 0.51 | | | 0.020 | | B | 0.85 | | 1.40 | 0.033 | | 0.055 | | b | | 0.50 | | | 0.020 | | b1 | 0.38 | | 0.50 | 0.015 | | 0.020 | | D | | | 20.0 | | | 0.787 | | E | | 8.80 | | | 0.346 | | e | | 2.54 | | | 0.100 | | e3 | | 17.78 | | | 0.700 | | F | | | 7.10 | | | 0.280 | | I | | | 5.10 | | | 0.201 | | L | | 3.30 | | | 0.130 | | Z | | | 1.27 | | | 0.050 |