TLE7237SL Infineon Technologies, TLE7237SL Datasheet - Page 15
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TLE7237SL
Manufacturer Part Number
TLE7237SL
Description
IC DRIVER SPI RELAY CTRL 24SSOP
Manufacturer
Infineon Technologies
Series
-r
Type
High Side/Low Side Driverr
Datasheet
1.TLE7237SL.pdf
(36 pages)
Specifications of TLE7237SL
Input Type
SPI
Number Of Outputs
8
On-state Resistance
900 mOhm, 1.6 Ohm
Current - Output / Channel
175mA, 380mA
Current - Peak Output
500mA, 1A
Voltage - Supply
9 V ~ 16 V
Operating Temperature
-40°C ~ 150°C
Mounting Type
Surface Mount
Package / Case
24-SSOP (0.154", 3.90mm Width)
Packages
PG-SSOP-24
Channels
8.0
Rds (on) (typ)
0.9 Ohm
Vdd
3.0 - 5.5 V
Vds(cl)
41.0 - 52.0 V
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
TLE7237SL
Manufacturer:
INFINEON
Quantity:
100
Part Number:
TLE7237SL
Manufacturer:
INFINEON/英飞凌
Quantity:
20 000
6
The TLE7237SL is an eight channel high-side and low-side relay switch. The power stages are built by N-channel
vertical power MOSFET transistors. The gates of the high-side switches are controlled by charge pumps.
6.1
There are three input pins available at TLE7237SL, which can be configured to be used for control of the output
stages. The INXn parameter of the input configuration register provide following possibilities:
•
•
•
•
Figure 4
Figure 4
The current sink to ground ensures that the channels switch off in case of open input pin. The zener diode protects
the input circuit against ESD pulses.
6.2
The TLE7237SL provides two auto-configuring high-side or low-side switches (channels 4 and 5). They adjust the
diagnostic and protective functions according their potentials at drain and source automatically.
In high-side configuration, the load is connected between ground and source of the power transistors (S4 or S5).
The drain of the power transistors (D4 and D5) can be connected to any potential between GND-pin potential and
VBB-pin potential. When the drain is connected to VBB, the channel behave like the other high side channels. The
drain can also be connected to a 5 V power supply and the source pin will be utilized as switched 5 V supply line.
In low-side configuration, the source of the power transistors are to be connected to GND.
The configuration can be chosen for each of these channels individually, so it is feasible to connect one channel
in low-side and the other in high-side configuration.
Data Sheet
channel is switched off
channel is switched according to signal level at input pin IN1
channel is switched according to signal level at input pin IN2or IN3
channel is switched on
shows the input circuit of TLE7237SL.
Power Stages
Input Circuit
Input Multiplexer
Channels 4 and 5
IN1
IN2
IN3
I
I
I
IN1
IN2
IN3
0
1
0
1
INX0
INX1
Channel 0
Channel 1
Channel 2
Channel 3
15
Channel 4
Channel 5
Channel 6
Channel 7
SPI Driver for Enhanced Relay Control
InputLogic3in .emf
Rev. 1.1, 2011-04-05
Power Stages
TLE7237SL