FZL4146GGEGHUMA1

FZL4146GGEGHUMA1 Datasheet


FZL 4146

Part Datasheet
FZL4146GGEGHUMA1 FZL4146GGEGHUMA1 FZL4146GGEGHUMA1 (pdf)
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Quad Driver Incl. Short-Circuit Signaling

Bipolar IC

Features q Short-circuit signaling q Four driver circuits for driving power transistors q Turn-ON threshold setting from to 7 V

FZL 4146

P-DSO-20-7

Type FZL 4146 G
Ordering Code Q67000-H8743

Package P-DSO-20-7 SMD

The IC comprises four driver circuits capable of driving power transistors PNP or PMOS . The output transistors are protected against short-circuit to ground and supply voltage. The turn-ON threshold can be set from V to 7 V. Overload at one or several outputs will be indicated at pin SQ signaling output . The corresponding power transistors are then protected by changeover to clock-governed operation.

Circuit 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 output is designed to drive the output transistors. The load current is sampled and, if necessary, limited 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 T. Its operation requires an external capacitor Ce at pin CE. If Ce is bridged by a break-key, switching-ON can only be carried out by
operating this key. The duty cycle of the clock generator is 1:47 e.g. 45 µs/2.1 ms with

Ce = 10 nF . The clock generator is privileged versus the current sensor shut down.

When the supply is connected, the internal RS-FF goes into the state corresponding to the released output.

Semiconductor Group

FZL 4146

The turn-ON threshold at input Dl and ENA can be set via pin TS from to 7 V.

VTS = 0 V VTS = V 7 V VTS = VS

Turn-ON threshold = V

Turn-ON threshold = VTS

Turn-ON threshold = 7 V

Inputs Dl, ENA and W are proof against line break, i.e. an open input at Dl or ENA
corresponds to input L, open input W corresponds to overcurrent. If input TS is open, the
highest turn-ON threshold is provided.

The internal current supply B and the undervoltage monitor UV ensure that in case of a
supply voltage that is below the VS turn-OFF threshold, outputs Q and SQ are disabled and the inputs go high-impedance. Basic functioning is possible within the range from VS
turn-OFF threshold to V.

In case of overcurrent or short-circuit to ground 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 shortcircuit or overload is present. SQ is an open-collector output.

Any input and output is ESD proof within the limit values.

Semiconductor Group

Pin Configuration top view

P-DSO-20-7

FZL 4146

Semiconductor Group

FZL 4146

Pin Definitions and Functions

N.C.

Function

Pin for Ce

Enable input for drivers 1 to 4 Input driver 1 Input driver 2 Not connected Ground Input driver 3 Input driver 4 Threshold changeover for all inputs Short-circuit signaling output for drivers 1 to 4 Output current sensor driver 4 Output driver 4 Output current sensor driver 3 Output driver 3 Supply voltage Ground Output current sensor driver 2 Output driver 2 Output current sensor driver 1 Output driver 1

Semiconductor Group

FZL 4146

Block Diagram

Semiconductor Group

FZL 4146

Absolute Maximum Ratings Parameter
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Datasheet ID: FZL4146GGEGHUMA1 638042