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PDF STK681-332-E Data sheet ( Hoja de datos )
| Número de pieza | STK681-332-E | |
| Descripción | Forward/Reverse Motor Driver | |
| Fabricantes | Sanyo Semicon Device | |
| Logotipo |  |
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Ordering number : ENA1591B
STK681-332-E
Thick-Film Hybrid IC
Forward/Reverse Motor Driver
Overview
The STK681-332-E is a hybrid IC for use in current control forward/reverse DC motor driver with brush.
Applications
• Office photocopiers, printers, etc.
Features
• Allows forward, reverse, and brake operations in accordance with the external input signal.
• 12A peak startup output current and 12A peak brake output current.
• On-chip output short-circuit detection function.
• Connecting an external current detection resistor allows overcurrent detection and peak current control in the PWM
operation mode.
• Obviate the need to design for the dead time in order to turn off the upper- and lower drive devices when switching
between the forward and reverse operation mode.
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer's products or
equipment.
70611HKPC 018-09-0026/22311HKIM/N1809HKIM No. A1591-1/14
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
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Internal Block Diagram
Unassigned pins
5 11
STK681-332-E
OUT1
8 10
VCC
97
OUT2
46
IN2
17
ENABLE
18
F1
F3
F2
F4
VDD (5V)
15
FAULT
13
Vref
19
S.GND
14
PWM
(46kHz typ)
Constant-
current control
Latch
Output short-circuit
detection
Overheat
Detection
Overcurrent
Detection
Setting voltage
(0.48V typ)
IN1
16
GND
1
2
3
No. A1591-5/14
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
www.DataSheet.co.kr
STK681-332-E
2. Output short-circuit detection, Overcurrent Detection and Overheat Detection
Each detection function operates using a latch system and turns output off. To restore output operation, turn the VDD
power supply off and then on again to apply a power-on reset.
[Output Short-circuit Detection, Overcurrent Detection]
When the output pin is simply connected to the circuit GND or VCC, or when the output load is short-circuited, the
output short circuit detector must be activated and turn the output off.
Constant current PWM control can be performed by connecting a current detection resistor to pins 1, 2 and 3, and
setting the Vref pin voltage to less than 2.0V. In addition, when this current detection resistor voltage exceeds 0.48V
(typ.), the overcurrent detector is activated and shuts the output off.
[Overheat Detection]
Rather than directly detecting the temperature of the semiconductor device, overheat detection detects the temperature
of the aluminum substrate (144°C typ).
Within the allowed operating range of IO1 (6.1A) recommended in the specifications, if a heat sink attached for the
purpose of reducing the operating substrate temperature, Tc, comes loose, the semiconductor can operate without
breaking.
However, we cannot guarantee operations without breaking in the case of operation other than those recommended,
such as operations at a current exceeding IOH max (6.1A) that occurs before overcurrent detection is activated.
3. Mitigated Curve of Package Power Loss, PdPK, vs. Ambient Temperature, Ta
Package power loss, PdPK, refers to the average internal power loss, PdAV, allowable without a heat sink.
The figure below represents the allowable power loss, PdPK, vs. fluctuations in the ambient temperature, Ta.
Power loss of up to 2.8W is allowable at Ta=25°C, and of up to 1.5W at Ta=60°C.
Allowable power dissipation, PdPK (no heat sink) - Ambient temperature, Ta
PdPK - Ta
3.0
2.5
2.0
1.0
1.5
0.5
0
0 20 40 60 80 100 120
Ambient temperature, Ta - °C
ITF02714
No. A1591-11/14
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
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