• Small package (SOIC16)
• Current limitation Low power consumption
• Over temperature protection
• Direct microcontroller compatible
  

Figure 1

 

The IC drives directly small DC inductive or active loads like electric motors, lamps, etc.
There are four main driving modes. These are set by digital inputs "In1" and "In2" :

The current of the output-drivers is limited for protection against all kind of overload and short-circuit conditions, and this in the whole supply voltage and temperature range.

The outputs "M1" and "M2" are on-chip diode-protected against motor inductances (Nominal values of 12mH and 12 Ohm).

If the temperature of the chip exceeds a preset value (selectable with the "Auto" pin), the temperature-overload protection-circuit disables the outputs, preventing the chip from being overheated. In addition, this socalled "temp ovl"-state is signalled with a low level at the "overtemp" pin.

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Pinout

Pin	Symbol	Function
1	M2	Motor output 1
2	VCC	Supply
3	n.c.
4	GND	Ground
5	GND	Ground
6	n.c.
7	VCC	Supply
8	M1	Motor output 2
9	IN2	Control input 2
10	IN1	Control input 1
11	n.c.
12	VDD	Digital supply
13	OVERTEMP	Protection state output
14	GND Logic	Digital ground
15	n.c.
16	AUTO	Protection setting

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Absolute Maximum Ratings

Vcc	+16V
Maximum Output Current	700mA
Die Temperature	+160�C
Storage Temperature	-55 �C to 125�C

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Electrical Characteristics

Following characteristics are valid over the temperature range from -40�C to +85�C unless otherwise specified.

Table 1

Characteristics	Test Conditions	Limits			Units
		Min	Typ	Max
Supply voltage VCC		5	9	12	V
Supply voltage Vdd		4.5	5.0	5.5	V
Mean motor current	Vcc=9V	330			mA
	Vcc=6V	300			mA
Motor current limit	Vcc=9V			550	mA
	Vcc=6V			500	mA
Brake current	Vcc=9V	240			mA
	Vcc=6V	180			mA
Voltage drop at the output transistors	Vcc=9V, Icc=300mA			1.2	V
	Vcc=6V, Icc=200mA			1.2	V
Supply current Icc	fwd, back, brake, temp ovl			5.0	mA
	off mode			5.0	�A
Supply current Idd	fwd, back, brake, temp ovl			1	mA
	off mode			10	�A
Inputs In1 & In2	logic level		TTL, 1.4		V
Input "Auto" (Pull up)	Current sourced (if tied to GND)			25	�A
Output 'overtemp' (open drain)	temp ok output			HiZ
	temp ovl output @ 1mA sink			0.4	V

Temperature Characteristics

Table 2

Typical Application Circuit

Figure 2