FZL4145D Siemens Semiconductor Group, FZL4145D Datasheet

no-image

FZL4145D

Manufacturer Part Number
FZL4145D
Description
Manufacturer
Siemens Semiconductor Group
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
FZL4145D
Manufacturer:
SIEMENS
Quantity:
1 450
Part Number:
FZL4145D
Manufacturer:
SIEMENS/西门子
Quantity:
20 000
Quad Driver Incl. Short-Circuit Signaling
Bipolar IC
Features
Type
FZL 4145 D
General Description
The IC comprises four driver circuits capable of driving power transistors for high output
currents. The output transistors are protected against short-circuit to ground and supply
voltage. The input threshold can be adjusted between 1.5 V and 7 V. Overload or short-
circuit failure at an output will be indicated at pin SQ (signaling output).
Functional Description
Each driver circuit has one active high driver input Dl and a common enable input (ENA)
(active high) is provided for all stages. The (Q) outputs are designed to drive the output
transistors. The load current is sampled via pin W. If the load current exceeds the preset
value, the output stage switches off. Switching-on again is provided by the built-in clock
generator. Its operation requires an external capacitor
break-key, switching on can only be carried out by operating a key. The duty cycle of the
clock generator is 1:50 (e.g. 40 s/2 ms with
In case of overcurrent or short-circuit failure at any output stage the signaling output
(SQ) will go low. In clock-governed operation (i.e. when there is automatic switching on
by the clock and not by a key), SQ goes high and low at the clock rate as long as a short-
circuit or overload exists. SQ is an open-collector output.
Unused W pins must be connected to
activate the signaling output.
Semiconductor Group
Short-circuit shutdown with clock generator
Four driver circuits for controlling
power transistors
Overload and short-circuit signaling
Ordering Code
Q67000-H8437
V
s
. Open W pins would simulate a short-circuit and
1
C
T
= 33 nF).
C
T
at pin C. If
P-DIP-18-1
Package
P-DIP-18-1
C
T
is bridged by a
FZL 4145 D
09.94

Related parts for FZL4145D

FZL4145D Summary of contents

Page 1

Quad Driver Incl. Short-Circuit Signaling Bipolar IC Features Short-circuit shutdown with clock generator Four driver circuits for controlling power transistors Overload and short-circuit signaling Type FZL 4145 D General Description The IC comprises four driver circuits capable of driving power ...

Page 2

Pin Configuration (top view) Semiconductor Group 2 FZL 4145 D ...

Page 3

Block Diagram The switching threshold at inputs Dl and ENA can be adjusted between 1.5 V and 7 V via connection TS input threshold = 1.5 V (for 5 V logic ...

Page 4

Absolute Maximum Ratings Parameter Supply voltage Input voltage at Dl and ENA Voltage at TS and SQ Output voltage V Q and voltage at C Voltage at W Input current at DI and ENA Output current at SQ Power dissipation ...

Page 5

Characteristics V Supply voltage 4 Parameter Supply current H-input voltage at DI, ENA H-input voltage at DI, ENA L-input voltage at DI, ENA L-input voltage at DI, ENA Input current at DI, ENA L-output voltage at SQ Output ...

Page 6

Schematic Circuit Diagram of One Stage Semiconductor Group DI Driver input ENA Enable input C Clock capacitor SQ Signaling output Q Output TS Input for threshold switching W Input for output current limiter 6 FZL 4145 D ...

Page 7

Mode of Operation: Switching-ON again after Overload with Key H Semiconductor Group 7 FZL 4145 D ...

Page 8

Mode of Operation: Automatic Switching-ON again after Overload Semiconductor Group 8 FZL 4145 D ...

Page 9

Typical Application Circuits The load conditions at Q depend on the permissible power dissipation of the used power transistors. The pulsed power dissipation in case of a short circuit must be observed. In order to suppress oscillations of the power ...

Page 10

Typical Application of Short-Circuit Signaling Output SQ 1. LED Display 2. TTL/CMOS/LSL Driving If the pulses appearing at SQ during clocked operation disturb the remainder of the circuit, a lowpass filter will be necessary. For a load current of of ...

Related keywords