MIC4807BN

MIC4807BN Datasheet

MIC4807

Part	Datasheet
MIC4807BN	MIC4807BN (pdf)

PDF Datasheet Preview
MIC4807 Micrel MIC4807 80V 8-Channel Addressable Low-Side Driver 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 50µA pull-up current source, while the Output Enable OE , Chip Select CS , and Clear logic inputs have an internal 75µA 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 Pin Diagram • 4.5V to 16V Operation • Eight 80V 100mA Outputs • Off-state Leakage less than 10µA at 25°C • Short-Circuit Proof • Thermal Shutdown with Hysteresis DMOS Output Devices 25°C • 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 Ordering Information HVOUT2 HVOUT3 OE Ground CS Clear HVOUT4 HVOUT5 18 HVOUT1 17 HVOUT0 16 Data-in 4 MIC4807 15 AIN 14 BIN 13 CIN 12 VDD 11 HVOUT7 10 HVOUT6 Part Operating Package Number Temperature-Range MIC4807BN -40°C to 85°C 18-Pin Plastic DIP Block Diagram VDD 12 Addressing AIN 15 BIN 14 CIN 13 Data-in 16 Address Decoder Thermal Shutdown Latches Current Limit Driver • • • • • • Driver 17 HVOUT0 18 HVOUT1 1 HVOUT2 2 HVOUT3 8 HVOUT4 9 HVOUT5 10 HVOUT6 11 HVOUT7 Ground 5 6 CS Clear October 1998 MIC4807 General Description Continued turned on simultaneously, Gray Code address sequencing can be applied to Ain, Bin, Cin, while Data-in is held high and CS is held low. Data-in will be transferred to each address in turn, without the need to toggle CS. Similarly, a set of outputs could be simultaneously turned off by setting Data-in low. Gray Code ensures that no intermediate addresses are inadvertently accessed. A typical Gray Code is 0, 1, 3, 2, 6, 7, 5, Each output drive circuit has a high-voltage, power DMOS device configured as a transconductance loop. This loop limits the output current to typically 200mA. While current limiting keeps the output device within its allowable safeoperating area SOA , the power dissipation may be excessive. Long-term survival is guaranteed by thermal shutdown.

PDF Datasheet Preview

MIC4807

Micrel

MIC4807
80V 8-Channel Addressable Low-Side Driver

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 50µA pull-up current source, while the Output Enable OE , Chip Select CS , and Clear logic inputs have an internal 75µA 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

Pin Diagram
• 4.5V to 16V Operation
• Eight 80V 100mA Outputs
• Off-state Leakage less than 10µA at 25°C
• Short-Circuit Proof
• Thermal Shutdown with Hysteresis

DMOS

Output

Devices
25°C
• 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
Ordering Information

HVOUT2 HVOUT3

OE Ground

CS Clear HVOUT4 HVOUT5
18 HVOUT1
17 HVOUT0
16 Data-in
4 MIC4807 15 AIN
14 BIN
13 CIN
12 VDD
11 HVOUT7
10 HVOUT6

Part

Operating

Package

Number Temperature-Range

MIC4807BN
-40°C to 85°C
18-Pin Plastic DIP

Block Diagram

VDD 12

Addressing

AIN 15 BIN 14

CIN 13

Data-in 16

Address Decoder

Thermal Shutdown

Latches

Current Limit

Driver
•
•
•
•
•
•

Driver
17 HVOUT0 18 HVOUT1
1 HVOUT2 2 HVOUT3 8 HVOUT4 9 HVOUT5 10 HVOUT6 11 HVOUT7

Ground 5 6 CS

Clear

October 1998

MIC4807

General Description Continued
turned on simultaneously, Gray Code address sequencing can be applied to Ain, Bin, Cin, while Data-in is held high and CS is held low. Data-in will be transferred to each address in turn, without the need to toggle CS. Similarly, a set of outputs could be simultaneously turned off by setting Data-in low. Gray Code ensures that no intermediate addresses are inadvertently accessed. A typical Gray Code is 0, 1, 3, 2, 6, 7, 5,

Each output drive circuit has a high-voltage, power DMOS device configured as a transconductance loop. This loop limits the output current to typically 200mA. While current limiting keeps the output device within its allowable safeoperating area SOA , the power dissipation may be excessive. Long-term survival is guaranteed by thermal shutdown.

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived MIC4807BN Datasheet file may be downloaded here without warranties.

Datasheet ID: MIC4807BN 647901