Triple Driver with Thermal Monitoring U6803B Description tri

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Triple Driver with Thermal Monitoring U6803B Description tri

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Three Input Comparators with Schmitt-trigger Characteristic Input Clamping Current Capability Integrated Protection Cells (EMC, ESD, Dedicated Input Stages Common Shutdown Junction-temperature Monitor Reset with Hysteresis Voltage Protection According Human Body Model: ±2000V Output Stages: Short-circuit Protected Load-dump Protected Crosstalk Adjacent Channels Jump Start Possible
Triple Driver with Thermal Monitoring U6803B
Description
triple driver includes three non-inverted current-limited output stages with open collector. Common thermal shutdown protects outputs against critical junction temperatures. Each output sink current parallel output operation possible. digital inputs have Schmitt-trigger function with pull-up resistors Figure 1-1. Block Diagram
Thermal shutdown
Undervoltage detection
Rev. 4762B-AUTO-09/05
Configuration
Figure 2-1. Pinning
Table 2-1.
Description
Symbol Function Output Ground Output Output Input Input Supply voltage Input
Basic Circuitry
integrated circuit U6803B requires stabilized supply voltage ±5%) comply with electrical characteristics. external buffer capacitor recommended. integrated Zener diode between ground protects supply pin. input stages provided with integrated pull-up resistor directly connected microcontroller. output stages open collectors, each capable sinking Recommended external components: Pull-up resistor, Capacitor GND, Figure page
U6803B
4762B-AUTO-09/05
U6803B
Functional Description
General
state: level input stage activates corresponding output stage. state: internal pull-up resistor provides high level input comparator deactivates output stage. Zener diodes between each input capable clamping currents without crosstalk adjacent input stages. total clamping current should observed with respect power dissipation.
Current Limitation Output Stages Overtemperature Shutdown
temperature-dependent current limitation range protects stages case short. Additionally, chip temperature monitored. TChip 148°C, outputs disabled automatically enabled with hysteresis TChip 5°C.
Transients Load Dump
integrated Zener diode protects each output stage against transients load-dump (Schaffner pulses). With help external resistor, output transistor capable handling corresponding current which flows during each these conditions. Apart from that, outputs short-circuit overload protected.
Low-voltage Detection
When supply voltage switched power-on reset pulse generated internally which disables output stages until defined supply-voltage level reached. low-voltage detection provided with hysteresis Vhyst 0.5V typically.
Figure 4-1.
Application Schematic
VBatt Load Microcontroller
U6803B
4762B-AUTO-09/05
Absolute Maximum Ratings
Stresses beyond those listed under "Absolute Maximum Ratings" cause permanent damage device. This stress rating only functional operation device these other conditions beyond those indicated operational sections this specification implied. Exposure absolute maximum rating conditions extended periods affect device reliability. Parameters Supply voltage Ambient temperature range Storage temperature range Maximum junction temperature Symbol Tamb Tstg Value +125 +150 +150 Unit
Thermal Resistance
Parameters Junction ambient Symbol RthJA Value Unit
Electrical Characteristics
±5%, Tamb 27°C, reference point (GND), unless otherwise specified, Figure page Figure page Parameters Supply, Supply voltage Supply current Low-voltage detection threshold Low-voltage hysteresis Temperature shutdown Temperature shutdown hysteresis Input; Pins Zener-diode protection voltage Zener-diode clamping current Pull-up resistor Switching threshold Hysteresis Output; Pins Zener-diode protection voltage Integrated capacitor Leakage current Saturation voltage Current limitation Propagation delay (470 20V) ILeak VSat Ilimit 26.5 Vhyst Inputs open Inputs closed VTH(ON) VTH(OFF) Vhyst TChip Thyst 4.75 0.55 5.25 1.05 Test Conditions Symbol Min. Typ. Max. Unit
U6803B
4762B-AUTO-09/05
U6803B
Ordering Information
Extended Type Number U6803B-MFPY U6803B-MFPG3Y Package Remarks Tube, Pb-free Taped reeled, Pb-free
Package Information
Package
Dimensions
5.00 4.85 1.27 3.81 0.25 0.10 6.15 5.85
technical drawings according specifications
Revision History
Please note that following page numbers referred this section refer specific revision mentioned, this document. Revision 4762B-AUTO-09/05 History datasheet template Pb-free Logo page added Ordering Information page changed
4762B-AUTO-09/05
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4762B-AUTO-09/05

Triple Driver with Thermal Monitoring U6803B Description tri

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