MLX902xx Name of Sensor

Rev Y.X

22/Aug/98

Page 3

MLX90804

Speed regulator for universal motors

MLX90804 Speed regulator for universal motors

Page 3

Rev 1.0

30/Jun/00

MLX90804 Electrical Specifications

Parameter

Symbol

Test Conditions

Min

Typ

Max Units

Ambient temperature

Tamb

0

85

°C

Maximum chip temperature Tch

150

°C

Thermal resistance

Rth

PDIP8 package

110

°C/W

Maximum allowed source

supply current

IDD4m

Drivers off, all the current flows in the chip

10

mA

Power supply

The 90804 supply pin (VDD1) must be connected by external series resistors and a rectifier diode to the AC

line. An internal zener function limits the voltage at VDD1 to approximately 16V. For proper operation a decou-

pling capacitor must be connected between VDD1 and VSS.

Parameter

Symbol

Test Conditions

Min

Typ

Max Units

Voltage applied at the sup-

ply pin

VDD1

IDD1 = 5mA

14

16

18

V

Internal 5V supply

VDD

4.6

5.0

5.4

V

Current consumption

IDD1

VDD1 = 14V

0.7

mA

For external circuitry

VEXT

IEXT = 8mA

4.5

5

V

Parameter

Symbol

Test Conditions

Min

Typ

Max Units

Hysteresis

Vdphyst

0.5

V

Analog Power-On Reset

This block tracks the voltage applied at VDD1. The triac firing is permitted if VDD1 > Vaporh and is stopped when

VDD1<Vaporl.

Parameter

Symbol

Test Conditions

Min

Typ

Max Units

High level threshold

Vaporh

13

V

Low level threshold

Vaporl

10

V

Hysteresis

Vaphyst

2

3

4

V

Power on Reset

This block ensures a correct start of the digital part. The reset signal (DPORB) goes up for VDD>Vdporh and

down for VDD<Vdporl.

High level threshold

Vdporh

2.5

V

Low level threshold

Vdporl

2.0

V