Datasheet

BTS4300SGA
Power Stage
Data Sheet 10 Rev. 1.0, 2008-03-18
5 Power Stage
The power stage is built by an N-channel vertical power MOSFET (DMOS) with charge pump.
5.1 Output ON-State Resistance
The ON-state resistance R
DS(ON)
depends on the supply voltage as well as the junction temperature T
j
. Figure 4
shows the dependencies for the typical ON-state resistance. The behavior in reverse polarity is described in
Chapter 6.3.
Figure 4 Typical ON-state resistance
A high signal (See Chapter 8) at the input pin causes the power DMOS to switch ON with a dedicated slope, which
is optimized in terms of EMC emission.
5.2 Turn ON / OFF Characteristics
Figure 5 shows the typical timing when switching a resistive load.
Figure 5 Turn ON/OFF (resistive) timing
0
100
200
300
400
500
600
700
800
900
1000
01234 56789101112131415161718
Battery voltage (V)
Rdson (m
Ω
)
Rdson.vsd
0
100
200
300
400
500
600
-40
-2
0
0
20
40
6
0
80
1
00
12
0
140
Junction temperature (°C)
Rdson (m )
IN
t
V
OUT
t
ON
t
OFF
90% V
S
10% V
S
V
IN_H_min
V
IN_L_m ax
t
Switching times.vsd
30% V
S
70% V
S
dV/dt
ON
dV/dt
OFF