ST L9820 User Manual
®
L9820
HIGH SIDE DRIVER
OPERATING SUPPLY VOLTAGE UP TO 25V
DC CURRENT 0.3A
RON < 800m
DIAGNOSTIC AND PROTECTION FUNC-
TIONS
P COMPA TIBLE
µ
ENABLE INPUT FOR STAND-BY MODE
DESCRIPTION
The L9820 High Side Driver realized with Multipower - BCD mixed technology, drives resistive
or inductive loads with one side connected to
ground.
The ENABLE input is TTL compatible and a diagnostic output provides an indication of short circuit
and device status (thermal and overvoltage shutdown). Onchip thermal protection and short circuit
protection are provided.
BLOCK DIAGRAM
Ω
MULTIPOWER BCD TECHNOLOGY
Minidip SO8
ORDERING NUMBERS:
L9820 L9820D
September 2003
40mΩ
1/6
L9820
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
V
V
V
T
Tj, T
T
S
I
R
5
8
1
I
4
I
5
I
8
I
1
op
stg
jp
Max Forward Voltage 50 Vdc
Reverse Bias Current at -1.3V –0.46 A
Input Voltage (to GND) –0.3 to 20 V
Diag. Output Voltage (to GND) –0.3 to 20 V
Output Voltage (to GND) –0.3 to 25 V
Supply Current Internally limited
Enable Input Current 0.5 mA
Diag. Out Current (sink) 10 mA
Output Current Internally limited
Operation Temperature –40 to 85 °C
Junction and Storage Temperature Range –55 to 150 °C
Detecting Temperature 150 °C
PIN CONNECTION
(Top views)
Minidip
SO8
THERMAL DATA
Symbol Parameter Minidip SO8 Unit
R
th j-amb
Thermal Resistance Junction-ambient Max. 100 200 °C/W
TRUTH TABLE
H: high level
L: low level
2/6
ENABLE FUNCTION DIAG. STATUS POWER STATUS
L Operating OFF H L
H Normal Operation H H
H Overvoltage Protection ON L L
H Overcurrent Protection ON L L
H Overtemperature
LL
Protection ON
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