HITFET
Smart Low Side Power Switch
HITFET - BTS3046SDR
46 mOhm single channel smart low side power switch for 12V & 24V Application
Datasheet
Rev. 1.0, 2009-12-06
Automotive Power
HITFET - BTS3046SDR
Smart low side power switch
1
2
2.1
3
3.1
3.2
4
4.1
4.2
4.3
4.3.1
5
5.1
5.1.1
5.2
5.2.1
5.2.2
5.3
6
6.1
6.2
6.3
6.4
7
8
Overview
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Block Diagram
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin Configuration
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin Assignment BTS3046SDR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin Definitions and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
General Product Characteristics
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transient Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input and Power Stage
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Failure Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output On-state Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Protection Functions
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overvoltage Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Short Circuit Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7
7
7
8
9
10
10
11
11
11
13
14
16
16
17
18
19
Package Outlines BTS3046SDR
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Revision History
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Datasheet
2
Rev. 1.0, 2009-12-06
HITFET - BTS3046SDR
Smart low side power switch
BTS3046SDR
1
Features
•
•
•
•
•
•
•
•
•
Overview
Short circuit and over load protection
Thermal shutdown with restart behavior
ESD protection
Over voltage protection
Logic level input suitable for 5V and 3.3V
Analog driving possible
12V and 24V usability
Green Product (RoHS compliant)
AEC Qualified
PG-TO252-3-11
Description
The BTS3046SDR is a single channel low-side MOSFET power switch in PG-TO252-3-11 package providing
embedded protective functions.
The device is monolithically integrated with a N channel vertical power FET and embedded protection functions.
The BTS3046SDR is automotive qualified and can be used in 12V and 24V automotive and industrial applications.
Table 1
Product Summary
Drain voltage
1)
Maximum Input Voltage
Maximum On-State resistance at 150°C at 5V input voltage
Typical On-State resistance at 25°C and 10V input voltage
Nominal load current
Minimum current limitation level
1) Active clamped
V
D
V
IN
R
DS(ON)
R
DS(ON)
I
D(nom)
I
D(lim)
60 V
10 V
134 mΩ
46 mΩ
3.6 A
10 A
Type
BTS3046SDR
Datasheet
Package
PG-TO252-3-11
3
Marking
Rev. 1.0, 2009-12-06
HITFET - BTS3046SDR
Smart low side power switch
Overview
Protective Functions
•
•
•
•
•
Electrostatic discharge protection (ESD)
Active clamp over voltage protection
Thermal shutdown with restart behavior
Over load and Short circuit protection
Current limitation
Analog Fault Information
•
•
•
Thermal shutdown
Short to Battery
Overload
Applications
•
•
•
•
Designed for inductive and lamp loads in automotive and industrial applications.
12V and 24V applications
All types of resistive, inductive and capacitive loads
Replaces discrete circuits
Detailed Description
The device is able to switch all kind of resistive, inductive and capacitive loads, limited by
E
AS
and maximum
current capabilities.
The BTS3046SDR offers ESD protection on the IN Pin which refers to the Source pin (Ground).
The overtemperature protection prevents the device from overheating due to overload and/or bad cooling
conditions. The temperature information is given by a temperature sensor in the power MOSFET. During thermal
shutdown the device sinks an increased input current at the IN pin to feedback the fault condition.
The BTS3046SDR has a thermal-restart function. The device will turn on again, if input is still high, after the
measured temperature has dropped below the thermal hysteresis.
The over voltage protection gets activated during load dump or inductive turn off conditions. The power MOSFET
is limiting the drain-source voltage, if it rises above the
V
DS(clamp).
Datasheet
4
Rev. 1.0, 2009-12-06
HITFET - BTS3046SDR
Smart low side power switch
Block Diagram
2
Block Diagram
Drain
Over-
voltage
Protection
Over-
temperature
Protection
IN
Gate
Driving
Unit
ESD
Protection
Over-
current
limitation
Source
BlockDiagram.emf
Figure 1
Block Diagram
2.1
Terms
Figure 2
shows all external terms used in this data sheet.
V
bat
V
bat
Z
L
I
D
I
IN
IN
Drain
V
D
Source
I
Sourc e
GND
Terms.emf
R
IN
V
IN
Figure 2
Naming of electrical parameters
Datasheet
5
Rev. 1.0, 2009-12-06
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