BTS621L1 Datasheet, PDF (7/15 Pages) Siemens Semiconductor Group – Smart Two Channel Highside Power Switch (Overload protection Current limitation Short circuit protection Thermal shutdown)

PROFET® BTS621L1
Truth Table
IN1 IN2 OUT1 OUT2
ST
BTS621L1
Normal operation
L
L
L
L
H
L
H
L
H
H
H
L
H
L
H
H
H
H
H
H
Open load
Channel 1
Channel 2
L
L
Z
L
H
Z
H
X
H
L
L
L
L
H(L¹³⁾⁾
H
H
X
L
Z
H(L¹³⁾⁾
H
L
H
Z
H
X
H
X
H
L
Short circuit to Vbb
Channel 1
Channel 2
L
L
H
L
H
H
H
X
H
L
L
L
L
L¹⁴⁾
H
H
X
H(L¹⁵⁾⁾
H
L¹⁴⁾
H
L
H
X
H
X
H
H
H
H(L¹⁵⁾⁾
Overtemperature
both channel
L
L
L
L
H
X
H
L
L
L
H
X
L
L
L
Channel 1
L
X
L
X
H
H
X
L
X
L
Channel 2
X
L
X
L
H
X
H
X
L
L
Undervoltage/ Overvoltage
X
X
L
L
H
L = "Low" Level
X = don't care
Z = high impedance, potential depends on external circuit
H = "High" Level
Status signal after the time delay shown in the diagrams (see fig 5. page 12...13)
Terms
Input circuit (ESD protection)
Vbb
I _IN1
3 _IN1
I _IN2
Ibb
4
Vbb
VON1
VON2
OUT1 ¹
I _L1
6 ^IN2
I _ST
VIN1 VIN2 _{VST 5} ^ST
PROFET
GND
OUT2
7
2
I _L2
VOUT1
R _GND
IGND
VOUT2
IN
RI
ESD-ZD _I
II
GND
ESD zener diodes are not to be used as voltage clamp
at DC conditions. Operation in this mode may result in
a drift of the zener voltage (increase of up to 1 V).
13) _{With additional external pull up resistor}
14) _{An external short of output to Vbb, in the off state, causes an internal current from output to ground. If RGND}
is used, an offset voltage at the GND and ST pins will occur and the V_{ST low} signal may be errorious.
15) _{Low resistance to Vbb may be detected in the ON-state by the no-load-detection}
Semiconductor Group
7
2003-Oct-01