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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 | ON Semiconductor | |
| Logotipo |  |
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Ordering number : ENA1591C
STK681-332-E
Thick-Film Hybrid IC
Forward/Reverse Motor Driver
http://onsemi.com
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.
Specifications
Absolute maximum ratings at Tc = 25C
Parameter
Maximum supply voltage 1
Maximum supply voltage 2
Input voltage
Output current1
Output current2
Brake current
Symbol
VCC max
VDD max
VIN max
IO1 max
IO2 max
IOB max
Allowable power dissipation
Operating substrate temperature
Junction temperature
Storage temperature
PdPK max
Tc
Tj max
Tstg
Conditions
VDD=0V
No signal
Logic input pins
VDD=5.0V, DC current
VDD=5.0V, Pulse current: 5ms
VDD=5.0V, square wave current, operating time 15ms
(single pulse, low side brake)
No heat sink
Metal surface temperature of the package
Ratings
52
-0.3 to +6.0
-0.3 to +6.0
8.5
12
12
2.8
-20 to +105
150
-40 to +125
unit
V
V
V
A
A
A
W
C
C
C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
ORDERING INFORMATION
See detailed ordering and shipping information on page 14 of this data sheet.
Semiconductor Components Industries, LLC, 2013
June, 2013
61913HK 013-13-0024/70611HKPC/22311HKIM/N1809HKIM No. A1591-1/14
1 page  
Internal Block Diagram
Unassigned pins
5 11 12
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
5 Page 
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 (144C 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=25C, and of up to 1.5W at Ta=60C.
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
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet STK681-332-E.PDF ] | |
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