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Atmel Electronic Components Datasheet

U6820BM Datasheet

Dual Quad BCDMOS Driver IC

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Features
Four Short-circuit-protected High-side Drivers with a Maximum Current Capability of
50 mA Each
Four Short-circuit-protected Low-side Drivers with a Maximum Current Capability of
50 mA Each
ON Resistance High Side Ron < 10 Versus Total Temperature Range
ON Resistance Low Side Ron < 7 Versus Total Temperature Range
Short-circuit Detection of Each Driver Stage
Disabling of Driver Stages in the Case of Short-circuit and Overtemperature Detection
Independent Control of Each Driver Stage via an 8-bit Shift Register
Status Output Reports Short-circuit Condition
Status Output Reports when All Loads Are Switched Off
Timing of Status Output Reset Signalizes Failure Mode
Temperature Protection in Conjunction with Short-circuit Detection
Description
The U6820BM is a driver interface in BCDMOS technology with 8 independent driver
stages having a maximum current capability of 50 mA each. Its partitioning into 4
high-side and 4 low-side driver stages allows an easy connection of either 4 half-
bridges or 2 H-bridges on the pc board. The U6820BM communicates with a micro-
controller via an 8-bit serial interface. Integrated protection against short circuit and
overtemperature give added value. EMI protection and 2-kV ESD protection together
with automotive qualification referring to conducted interference (ISO/TR 7637/1)
make this IC ideal for both automotive and industrial applications.
Figure 1. Block Diagram
VCC
6
HS4 HS3 HS2 HS1
16 9 8 1
Dual Quad
BCDMOS
Driver IC
U6820BM
14
STATUS
CS 11
CLK 12
DI 13
V CC
Current
limiter
Current
limiter
HHHH L L L L
SSSSSSSS
43 2143 21
Input Register
Control
logic
V CC
Current
limiter
Current
limiter
Current
limiter
Current
limiter
3
VS
Thermal protection
V CC
Power-on reset
Current
limiter
Current
limiter
V CC
5 GND S
4
GNDCC
15
LS4
10
LS3
72
LS2 LS1
Rev. 4527ABCD03/02
1


Atmel Electronic Components Datasheet

U6820BM Datasheet

Dual Quad BCDMOS Driver IC

No Preview Available !

www.DataSheet4U.com
Pin Configuration
Figure 2. Pinning SO16
HS1 1
LS1 2
VS 3
GNDCC 4
GNDS 5
VCC 6
LS2 7
HS2 8
16 HS4
15 LS4
14 STATUS
13 DI
12 CLK
11 CS
10 LS3
9 HS3
Pin Description
Pin Symbol
1 HS1
2 LS1
3 VS
4 GNDCC
5 GNDS
6 VCC
7 LS2
8 HS2
9 HS3
10 LS3
11 CS
12 CLK
13 DI
14 STATUS
15 LS4
16 HS4
Function
Output high side 1
Output low side 1
Supply voltage 6 V to 18 V
Digital ground
Power ground
Supply voltage 5 V (external)
Output low side 2
Output high side 2
Output high side 3
Output low side 3
Set supply status (chip select)
Clock line for 8-bit control shift register
Data line for 8-bit control shift register
Status output (H = fault, diagnostic Hif all driver stages are switched off)
Output low side 4
Output high side 4
2 U6820BM
4527ABCD03/02


Part Number U6820BM
Description Dual Quad BCDMOS Driver IC
Maker ATMEL Corporation
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U6820BM Datasheet PDF






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1 U6820BM Dual Quad BCDMOS Driver IC
ATMEL Corporation





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