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MIC4807

Description
80V 8-Channel Addressable Low-Side Driver
File Size102KB,8 Pages
ManufacturerMicrochip
Websitehttps://www.microchip.com
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MIC4807 Overview

80V 8-Channel Addressable Low-Side Driver

MIC4807
Micrel
MIC4807
80V 8-Channel Addressable Low-Side Driver
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 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 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)
Features
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 (R
ON
7Ω at 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
Applications
Pin Diagram
HVOUT
2
1
HVOUT
3
2
V
DD
3
OE
Ground
CS
Clear
HVOUT
4
HVOUT
5
5
6
7
8
9
18
HVOUT
1
17
HVOUT
0
Ordering Information
Part
Number
MIC4807BN
Operating
Temperature-Range
-40°C to 85°C
Package
18-Pin Plastic DIP
7
16
Data-in
4
MIC4807
15
A
IN
14
B
IN
13
C
IN
12
V
DD
11
HVOUT
7
10
HVOUT
6
Block Diagram
V
DD
12
Thermal
Shutdown
Current
Limit
17
18
1
HVOUT
0
HVOUT
1
HVOUT
2
HVOUT
3
HVOUT
4
HVOUT
5
HVOUT
6
HVOUT
7
Addressing
{
A
IN
15
B
IN
14
C
IN
13
Address
Decoder
Latches
Data-in 16
Ground 5
6
CS
7
Clear
Driver
Driver
2
8
9
10
11
4
OE
October 1998
7-3

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Description 80V 8-Channel Addressable Low-Side Driver 80V 8-Channel Addressable Low-Side Driver 80V 8-Channel Addressable Low-Side Driver
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