Features

0.5A output current

8V to 35V power supply voltage range

Internal current limit

Open open Ground protection

Internal negative voltage clamping, rapid demagnetization

Division input

range and threshold lag

Relax hturium lock

Air load detection

Two diagnostic output

Output state LED drive

No short circuit protection

Anti -sudden transient (IEC 61000-4-4)

ESD protection (human model ± 2kV)

Instructions

L6375s is a switch in a single-chip smart power multi-power BCD technology. Use In the driver, there is an induction or resistance load voltage conversion rate and short -circuit protection that controls output. Internal clamping diodes make the rapid induction load demagnetization. Diagnosis of CPU feedback and extensive protection of electrical use makes this device very strong and specially applicable to industrial automation applications.

Fragics and pin descriptions

Electric characteristics

(vs u003d 24V; tj u003d -25 to+125 ° C, unless there are other regulations)

electrical characteristics (continued)

125 ° C, unless there are other regulations)

Switch waveform

Input segment

Width wide The voltage range of high noise single -end input TTL/CMOS immunity (due to built -in stagnation) is available.

Overheating protection (OVT)

The over -temperature protection on the chip is protected at extreme conditions. When the temperature-measured in the center of the chip to measure more than TMAX u003d 150OC (typical values), the device is closed, and the DIAG2 output becomes low. The chip temperature is restored to normal work (usually after a few seconds) lower than tmax-thlys u003d 130 ° C (typical value). Magnetic stagnation avoids intermittent behavior.

Impolosculent protection (UV)

The power supply voltage is expected to be between 8 and 35V. In this range, the equipment work is correct. In order to avoid any failure, the power supply voltage is continuously monitored to provide underwriting protection. When VS is lower than VSTH VSHYS (usually 7.5 V, see Figure 1) output power MOS closed, DIAG1 and DIAG2 (see the true value table). Once VS exceeds VSTH, normal operation is resumed. Standard behavior prevent intermittent work at low power voltage.

Overcurrent operation

In order to achieve short -circuit protection, the output power MOS is linearly driven by linearly limited ISC output current (1.1A typical value). This condition (current limit to ISC value) continues one ton time interval, which can be set by a capacitor (CDON) to connect to the on delayed foot: ton u003d 1.28 microsecond/pF for 50pf lt; cdon lt; 2NF ends at the end of the time interval. After that, the output power MOS closed TOFF time interval: TOFF u003d 64 tons.

When the TOFF interval is also outdated, the output power MOS is turned on. At this moment, there may be two cases at this moment

(a) overload still exists, and then the output power MOS is again driven by the linear mode (limiting the output current of ISC) to another, starting a new cycle, or or or.

(b) overloading the overload conditions, the output power MOS is driving for a longer time in the linear mode of NO. All these situations appear on Diag2 (see Figure 2). We call this unique characteristic of non -scattered short circuit protection, which ensures that it can run safely even under permanent overload conditions. Note that choosing the appropriate time interval value (ie, the value of the CDON capacitor) delay (TON itself) will prevent the output when displaying misleading short -circuit information on DIAG2 (expressed as short -circuit at the beginning) or incandescent lamp (at the beginning) or incandescent lamp ( The resistance value of cold filaments is low). Non -dissipated short -circuit protection (keep TON u003d 0, but the output current remains unchanged and limited to ISC, and the diagnostic function has been disabled) is just a short -term grounding of the on delay pin.

Diagnostic logic

The operating conditions of the device will be permanently monitored, and the event will send a signal through DIAG1/DIAG2 drain opening pins, please refer to the truth of the diagnosis. surface.

Short -circuit on the ground.

Short -circuit VS.

IOU (UV)

Over -temperature (OVT)

The opening load, if the output current is less than 3mA (typical value).

Edivation of the inductive load

The internal Qina diode restricted the voltage of the power MOS between 50 and 60V (VCL). No external clamping is required, which can safely and quickly remove the device. The maximum energy regulations that can be absorbed from the perceptual load are 200MJ (TJ u003d 85 ° C)

1. When IPS was originally opened.123]