MELEXIS MLX10407 Datasheet

MLX10407

5-Channel Gauge Driver with Serial Link

Features and Benefits

 Supply voltage up to 12 V
 Interface directly with 5 V CMOS logic MCUs
 Serial link
 Can drive two 360° actuators & three 90° actuators simultaneously
 Open circuit / short -circuit detection of the drivers outputs
 Small size (SO24 package)
 Real Time Angle Tracking

Applications

 Logometer Driver Dashboard
 Industrial Metering

Ordering Information

Part No. Temperature Suffix Package Temperature Range
MLX11407CA N/A SO24 -40C to +85C Automotive

Functional Diagram

Description

The 10407 is a MCU peripheral for logometers control using SIN/COS PWM commands. The circuit controls two
independent sets of CMOS power bridges. A ten-bit angle is displayed with a 9 bit per quadrant resolution PWM whose
frequency is set by a crystal oscillator. A power-on self test detects open or short-circuit outputs for each logometer and
a real time angle tracking avoids display errors.
The 10407 can also drive three small angle logometers (90°). A three wire serial link allows bidirectional communication
with the MCU.

MLX902xx Name of Sensor Rev Y.X 22/Aug/98 Page 1

MLX10407 5-Channel Gauge Driver with Serial Link Page 1 Rev 1.1 28/Apr/01

MLX10407

5-Channel Gauge Driver with Serial Link

DC Electrical Characteristics

Tamb = -40 to 85°C, VDD = 4.5 V to 12 V unless otherwise specified.

Characteristics Test Conditions

Supply current Inputs at VDD or

VSS, No loads on
outputs

Maximum power dissipation

Inputs

Input capacitance

Pin 11

Pull-down resistance
Input voltage LOW

Input voltage HIGH
Hysteresis VDD = 8.5 V

Leakage current pin at VDD or VSS

Pin 12, 13, 14, 15, 17

Input voltage LOW
Input voltage HIGH

Hysteresis VDD = 8.5 V
Leakage current (pin 12, 15, 17) pin at VDD or VSS

Pull-down resistance (pin 14) Rpd 0.8 1.5 kOhm

Symbol Limits Unit

Min Typ Max

ICC

PDmax

Cin

Rpd 125

VIL -0.3

VIH 4

VHYS 0.5

IL -1

VIL -0.3

VIH 4

VHYS 0.5

IL -1

5.5 mA

620 mW

10 pF

750 kOhm

1 V

VDD+0.3 V

2.5 V
1 µA

1 V

VDD+0.3 V

2.5 V
1 µA

Outputs
Pin 16

Low level output voltage IOUT < 500 µA
High level output leakage current VOUT=VDD ILKG 10 µA

Pin 2, 3, 5, 6, 20, 21, 23, 24

Drop-out voltage for each pair of
buffers
Mismatch of drop -out voltage

Pin 7, 8, 9

Output voltage low VDD = 8.5V, Tamb=
Output voltage high VDD = 8.5V, Tamb=

Oscillator
Pin 18,19

Input pin capacitance

MLX10407 5-Channel Gauge Driver with Serial Link Page 2 Rev 1.1 27/Apr/01

VDD = 8.5V, Tamb =
25°C, Icoil = 30 mA

25°C, Isink = 40mA
25°C, Isource =

40mA

VOL

Vd

D Vd

VOL

VOH 6.8 7.8

Cin

0.3 V

1.6 V

± 50 mV

0.3 0.6 V

10 20 pF

V

5-Channel Gauge Driver with Serial Link

ABSOLUTE MAXIMUM RATINGS

MLX10407

Parameter Symbol

Min Max

Storage Temperature Range Tstg -40 +150 °C
Operating Temperature Range Tamb -40 +85 °C
Supply Voltage Range VDD -0.3 14.0 V
Input Voltage Range Vi -0.3 VDD +0.3 V

Value

AC Electrical Characteristics

Tamb = -40 to 85°C, VDD = 4.5 V to 12 V unless otherwise specified.

Characteristics Test Conditions

Symbol

Limits

Unit

Unit

Min Typ Max

Oscillator 0.95 8.4 MHz

Clock frequency Fclk 8 MHz

Serial communication

Serial data clock frequency Fsclk 500 kHz
Time for DIN stable to SCLK rise 100 ns
Hold time for DIN 100 ns

MLX902xx Name of Sensor Rev Y.X 22/Aug/98 Page 3

MLX10407 5-Channel Gauge Driver with Serial Link Page 3 Rev 1.1 28/Apr/01