L6370QTR STMicroelectronics, L6370QTR Datasheet - Page 10

• Manufacturer Part Number: L6370QTR
• Description: Power Switch ICs - Power Distribution 2.5A Single Highside 9.5 to 35V Smart PWR
• Manufacturer: STMicroelectronics

Specifications of L6370QTR

• Product Category: Power Switch ICs - Power Distribution
• On Resistance (max): 100 mOhms
• Operating Supply Voltage: 9.5 V to 35 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-48
• Minimum Operating Temperature: - 25 C
• Switch Current (max): 20 mA

Circuit description
3.1
3.2
3.3
10/16
Diagnostic truth table
Table 7.
1. A cold lamp filament, or a capacitive load may activate the current limiting circuit of the IPS, when the IPS
Input section
The input section is an high impedance differential stage with high common and differential
mode range. There’s built-in offset of +1.4 V (typical value) and an hysteresis of 400 mV
(maximum value), to ensure high noise immunity.
Diagnostic logic
The operating conditions of the device are permanently monitored and the following
occurrences are signalled via the DIAG1/DIAG2 open-drain output pins:
●
●
●
●
●
●
Normal operation
Open load condition (I
Short to V
Short circuit to ground (I
(pin ON-DELAY grounded)
Output DMOS open
Overtemperature
Supply undervoltage (V
is initially turned on.
Short circuit versus ground. A current limiting circuit fixes at I
the maximum current that can be sourced from the OUTPUT pin (for more details see
short circuit operation section).
Short circuit versus Vs.
Under voltage (UV)
Over temperature (OVT)
Open load, if the output current is less than 3 mA (typical value).
Output DMOS open according to the diagnostic truth
S
Diagnostic truth table
Diagnostic conditions
o
< I
S
O
< V
old
= I
)
sth2
SC
)
)
Doc ID 022313 Rev 1
(1)
Input
H
H
H
H
H
H
H
L
L
L
L
L
L
L
Table
Output
H
H
H
H
X
L
L
L
L
L
L
L
L
L
7.
sc
= 3.2 A (typical value)
Diag1
H
H
H
H
H
H
H
H
L
L
L
L
L
L
Diag2
L6370Q
H
H
H
H
H
H
H
H
H
H
L
L
L
L