BTS3205G Datasheet, PDF (11/21 Pages) Infineon Technologies AG – Smart Low-Side Power Switch

Smart Low-Side Power Switch
BTS3205G
Block Description and CharacteristicsInput and Power Stage
5.1.2 Failure Feedback
During failure condition the BTS3205G tries to sink a increased input current I_INlim.
5.1.3 Output On-State Resistance
The on-state resistance depends on the junction temperature T_J. Figure 9 shows this dependancy for the typical
on-state resistance R_DS(on).
1,5
1,3
1,1
Vin = 5V
0,9
0,7
Vin = 10V
0,5
0,3
-50 -25 0
25 50 75 100 125 150
T [ °C ]
Figure 9 Typical On-State Resistance, R_DS(on) = f(T_J)
rdson.emf
5.1.4 Power Dissipation
The maximum allowed power dissipation in Figure 10 is calculated by R_thJC and R_thJA.
1,00
R_thJC=44 K/W
R_thJA=90 K/W
0,10
0,01
-50 -25 0 25 50 75 100 125 150
T / °C
Figure 10 Maximal Allowable Power Dissipation
Data Sheet
11
Rev. 1.0, 2007-12-06