MIC4807 80V 8-Channel Addressable Low-Side Driver - Micrel - #1

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MIC4807 Micrel October 1998 7-3 7 CS Data-in 18 HVOUT0 HVOUT2 HVOUT1 HVOUT3 HVOUT4 HVOUT5 HVOUT6 HVOUT7 VDD OE Ground Clear AIN CIN BIN VDD MIC4807 17 16 15 14 13 12 11 9 10 8 7 6 5 4 3 2 1 General Description The MIC4807 is an 80V, 8-channel, addressable low side driver with latches and TTL/CMOS compatible logic inputs. Each logic input is composed of a comparator with a 1.4V bandgap-derived reference serving as the trip point. The addresses (AIN, BIN, and CIN) and Data-in logic inputs have an internal 50mA pull-up current source, while the Output Enable (OE), Chip Select (CS), and Clear logic inputs have an internal 75mA pull-down sink. If the logic lines to the MIC4807 are severed, these currents guarantee that the outputs will turn OFF. Individual latches in the MIC4807 are selected by a binary address presented at inputs AIN, BIN, and CIN. Data-in is directed to the addressed latch while CS is held low, allowing an individual output to be pulse-width modulated. When CS is set high again, the last Data-in is stored in the latch. If Datain = "1", the addressed output is turned on, and if Data-in = "0", the addressed output is turned off. Information presented to Data-in and the address inputs is transferred to the latches while CS is pulled low. For application, where several outputs must be (Continued) Features • 4.5V to 16V Operation • Eight 80V 100mA Outputs • Off-state Leakage less than 10mA at 25°C • Short-Circuit Proof • Thermal Shutdown with Hysteresis • DMOS Output Devices (RON £ 7W at 25°C) Applications • Lamp Drivers • Solenoid Drivers • Display Drivers -Electroluminescent -Vacuum Fluorescent -Plasma • Relay Drivers • Print Head Drivers • Heater Drivers • Power Semiconductor Drivers • Security Systems • Environmental Controls • Process Controllers MIC4807 80V 8-Channel Addressable Low-Side Driver Part Operating Package Number Temperature-Range MIC4807BN -40°C to 85°C 18-Pin Plastic DIP Block Diagram Pin Diagram Ordering Information Latches Driver Address Decoder Driver • • • • • • 15 14 13 16 12 5 6 7 4 17 18 11 1 2 10 9 8 HVOUT HVOUT HVOUT HVOUT HVOUT HVOUT HVOUT HVOUT 0 1 2 3 4 5 6 7 VDD AIN BIN CIN Data-in Ground CS Clear OE Addressing{ Thermal Shutdown Current Limit