MIC4807BN【PDF 1/8 页】IC DRIVER 80V 8CH ADDRESS 18-DIP

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MIC4807

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 (A IN , B IN , and C IN ) and Data-in logic inputs have an

internal 50 μ A pull-up current source, while the Output Enable

(OE), Chip Select (CS), and Clear logic inputs have an

internal 75 μ A pull-down sink. If the logic lines to the MIC4807

are severed, these currents guarantee that the outputs will

turn OFF.

Micrel

MIC4807

80V 8-Channel Addressable Low-Side Driver

Features

? 4.5V to 16V Operation

? Eight 80V 100mA Outputs

? Off-state Leakage less than 10 μ A at 25 ° C

? Short-Circuit Proof

? Thermal Shutdown with Hysteresis

? DMOS Output Devices (R ON ≤ 7 ? at 25 ° C)

Applications

? Lamp Drivers

? Solenoid Drivers

? Display Drivers

Individual latches in the MIC4807 are selected by a binary

address presented at inputs A IN , B IN , and C IN . 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 Data-

in = "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)

-Electroluminescent

-Vacuum Fluorescent

-Plasma

Relay Drivers

Print Head Drivers

Heater Drivers

Power Semiconductor Drivers

Security Systems

Environmental Controls

Process Controllers

Pin Diagram

Ordering Information

HVOUT 2 1

HVOUT 3 2

V DD 3

18 HVOUT 1

17 HVOUT 0

16 Data-in

MIC4807 15 A IN

Part

Number

MIC4807BN

Operating

Temperature-Range

-40 ° C to 85 ° C

Package

18-Pin Plastic DIP

Ground

Clear

HVOUT 4

HVOUT 5

14 B IN

13 C IN

12 V DD

11 HVOUT 7

10 HVOUT 6

Block Diagram

V DD 12

Thermal

Shutdown

Current

Limit

HVOUT 0

HVOUT 1

{

A IN 15

Addressing B IN 14

C IN 13

Address

Decoder

Latches

Driver

HVOUT 2

HVOUT 3

HVOUT 4

HVOUT 5

HVOUT 6

HVOUT 7

Data-in 16

Ground 5

Driver

October 1998

Clear

7-3

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