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33887 Datasheet(PDF) 13 Page - Freescale Semiconductor, Inc

No. de pieza 33887
Descripción Electrónicos  5.0 A H-Bridge with Load Current Feedback
PDF  37 Pages
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Fabricante Electrónico  FREESCALE [Freescale Semiconductor, Inc]
Página de inicio  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

33887 Datasheet(HTML) 13 Page - Freescale Semiconductor, Inc

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Analog Integrated Circuit Device Data
Freescale Semiconductor
13
33887
ELECTRICAL CHARACTERISTICS
TIMING DIAGRAMS
Figure 10. Operating States
Figure 11. Example Short Circuit Detection Detail on Low-Side MOSFET
Active
Current
Limiting
>8A
6.5
Short Circuit Detection Threshold
Typical Current Limit Threshold
Hard Short Detection and Latch-OFF
0
IN1 or IN2
IN2 or IN1
IN1 or IN2
IN2 or IN1
IN1 IN2
[1]
[0]
[1]
[0]
[1]
[0]
[1]
[0]
Outputs
Tri-Stated
Outputs
Tri-Stated
Outputs Operation
(per Input Control Condition)
Time
High Current Load Being Regulated via Constant-OFF-Time PWM
Moderate Current Load
on Low-Side
MOSFET
Overcurrent Minimum Threshold
ta
tb
8.0
TIME
Typical PWM Load
Current Limiting
Waveform
Hard Output
Short Latch-OFF
ta = Tristate Output OFF Time
tb = Current Limit Blank Time
6.5
Hard Short Detection
Short Circuit Detect Threshold
ta = Output Constant-OFF Time
tb = Output Blanking Time
ISCL Short Circuit Detection Threshold
Typical Current
Limiting Waveform
tb
5.0
ta
8.0
Hard short occurs.
Hard short is detected during tb
ILIM Blanking Time
ton
0.0
and output is latched-off.



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