MELEXIS MLX10410 Datasheet
MLX10410
8 Fold High Side Driver
Features and Benefits
Small package (SOIC20)
Short-circuit protection
Diagnostic features
Current limitation
Low-power consumption
Over-temperature protection
Direct micro controller compatible
Integrated free wheel diodes
Applications
Automotive climate Control
Dashboard
Industrial Actuator control
Ordering Information
Part No. Temperature Suffix Package Temperature Range
MLX10410CA N/A SOIC-20 -40C to 85C Automotive
Functional Diagram
VDD
VCC1
VCC2
ADR2
ADR1
ADR0
CEN
STROBE
DATAI
DATAO
OTB
GND
OSCILLATOR
OVER-TEMP
PROTECT
BG OVER-VOLT
PROTECT
STAND-BY
LOGIC
LOGIC
LOGIC
LOGIC
LOGIC
LOGIC
LOGIC
LOGIC
OUTPUT
CURRENT LIMIT
OUTPUT
CURRENT LIMIT
OUTPUT
CURRENT LIMIT
OUTPUT
CURRENT LIMIT
OUTPUT
CURRENT LIMIT
OUTPUT
CURRENT LIMIT
OUTPUT
CURRENT LIMIT
OUTPUT
CURRENT LIMIT
Figure 1
DETECT C.C.
OUT7
OUT6
DETECT C.C.
OUT5
DETECT C.C.
OUT4
DETECT C.C.
OUT3
DETECT C.C.
OUT2
DETECT C.C.
OUT1
DETECT C.C.
OUT0
DETECT C.C.
Description
The 10410 is a high-side driver for automotive applications. It can drive small lamps, relays, coils etc. The output current
can be up to 250mA per driver (current limit at minimum 250mA).
The IC will only react to commands on the bus if the CEN (chip enable) signal is high. The CEN signal has nothing to do
with the power down mode, the IC will react to the micro controller commands if CEN is high.
MLX902xx Name of Sensor Rev Y.X 22/Aug/98 Page 1
MLX10410 8 Fold High Side Driver Page 1 Rev 1.1 16/Apr/01
MLX10410
8 Fold High Side Driver
In order to switch a particular output, it is necessary to apply its address on the 3 bit bus and the data on the input
DATAI. A high level on STROBE will latch the data and switch the output. When the IC is in active mode and CEN is
high, the logic level of the addressed output will be available on the pin DATAO.
When all 8 outputs are inactive (latched value is low) the circuit automatically switches to power down mode.
Diagnostic mode: when the DATAI is low and the STROBE is high, a 50K pull up to VCC is switched on, on the
corresponding output channel (addressed by ADR2, ADR1, ADR0) to see whether there is a load connected. The logic
level of the output can be observed on the pin DATAO. In this way, it is possible to scan all the outputs for an open
circuit.
When the IC is in active mode, then there is an over-temperature sensor that monitors the temperature of the IC. If the
die temperature goes above 165°C, all outputs are switched off and the output OTB will go low. As soon as the
temperature decreases below 125°C all outputs are switched back to their previous state.
The outputs are short-circuit proof against GND and VCC. When an output is shorted to GND, the current is limited and,
after a delay of typically 20ms, the output is switched off and the output OTB goes low. A delay is used to guarantee that
the output does not detect a short circuit when a normal lamp is driven. The latched value of the ouput is set to 0. A
rising edge on CEN will set OTB back to 1. When an output is shorted to a supply larger than VCC+100mV, the output
driver bulk is immediately disconnect from VCC, and after a delay of typically 20ms, the output is switched off and the
output OTB goes low. The latched value of the ouput is set to 0. A rising edge on CEN will set OTB back to 1
There is an over-voltage shut off that switches all the outputs off when the VCC voltage is above 18V for at least 1ms.
When an over-voltage occurs, CEN being low, DATAO pin will go low. The outputs will come on again as soon as the
voltage decreases below 18V. The status of all 8 outputs stays latched.
Every output stage is protected with a free wheel diode both to ground and to VCC.
Table 1
Active mode
CEN STROBE DATA I Description
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0 No Command Addressed
1 0 1 No Command
1 1 0 Addressed output 0 Load
turned OFF
1 1 1 Addressed output
DATA O
Chip 0 Over-voltage
Disabled 1 No Over-
voltage
OR
output
logic level
1 No Load
(Diagnostic mode)
Addressed
turned ON
output logic
level (always
1)
0 Over-temperature
Short-circuit to
1 No Over-
OTB
GND
temperature
MLX10410 8 Fold High Side Driver Page 2 Rev 1.1 16/Apr/01
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