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The L9821 High Side Driver realized with Multipower - BCDmixed technology, drives resistive or inductive loads with one side connectedto ground.
The input control is TTL compatible and a diagnostic output provides an indication of load (open and short) and device status (thermal and overvoltage shutdown).Onchip thermalprotectionandshort circuit protection are provided.
The device is assembled in the Pentawattpackage with the tab connected to the ground terminal.
L9821 Maximum Ratings
Symbol
Parameter
Value
VS
Max Forward Voltage Positive Transient Peak Voltage (dump :f fall time constant = 100ms, 5ms trise 10ms, Rsource 0.5) Resistive Load Inductive Load
50Vdc 60V 50V (*)
Reverse Input Voltage
0.3Vdc
VI V4 V5
Input Voltage Pin 2 (to GND) Pin 4 Voltage Pin 5 Voltage (to GND) (to GND)
0.3V / + Vs (Vs < 20V) 0.3V / + Vs (Vs < 20V) 3V / + Vs (Vs < 20V)
I1 I2 I4 I5
Pin 1 Current Pin 2 Current (forced) Pin 4 Current (sink) Pin 5 Current
Internally Limited 0.5mA 10mA Internally Limited
PTOT
Power Dissipation
Internally Limited
TJ, TSTG
Junction and Storage Temperature Range
55°C to + 150°C
* due to the negative voltage at the output during the switching off.
L9821 Features
`25A PEAK OUTPUT CURRENT `RON = 100m `DIAGNOSTICAND PROTECTION FUNCTIONS `P COMPATIBLE `GROUNDED CASE `INRUSH CURRENT LIMITING CIRCUIT