4

ML4425

ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

REFERENCE

Total Variation

Line, Temp

6.5

6.9

7.5

V

PWM OSCILLATOR

Total Variation

28

kHz

Ramp Peak

3.9

V

Ramp Valley

1.7

V

Ramp Charging Current

?

µA

SPEED CONTROL LOOP

SPEED SET Input Voltage Range

0

V

SPEED FB Input Voltage Range

0

V

SPEED COMP Output Current

±5

±20

µA

SPEED SET Error Amp Transconductance

144

µ

START-UP

C Suffix

0.68

0.98

µA

I Suffix

0.5

1.1

µA

1.4

1.7

V

C Suffix

0.68

0.98

µA

I Suffix

0.5

1.1

µA

1.4

1.7

V

VOLTAGE CONTROLLED OSCILLATOR

Frequency Range

1.5

1.85

2.2

kHz

Frequency vs. SPEED FB

300

Hz/V

CURRENT LIMIT

4.5

5.0

5.5

V/V

One Shot OFF-Time

C Suffix

9

18

µs

I Suffix

9

20

µs

ABSOLUTE MAXIMUM RATINGS

Absolute maximum ratings are those values beyond which

the device could be permanently damaged. Absolute

maximum ratings are stress ratings only and functional

device operation is not implied.

Logic Inputs (, SPEED FB, BRAKE) .......... GND - 0.3 to 7V

Output Current (LA, LB, LC, HA, HB, HC) ............ ±50mA

Junction Temperature .............................................. 150ºC

Storage Temperature Range ...................... –65ºC to 150ºC

Lead Temperature (Soldering 10 sec.) ..................... 260ºC

Thermal Resistance (

28-Pin Narrow PDIP ......................................... 48ºC/W

28-Pin SOIC ..................................................... 75ºC/W

32-Pin TQFP ..................................................... 80ºC/W

OPERATING CONDITIONS

Temperature Range

ML4425CX................................................. 0ºC to 70ºC

ML4425IX ............................................... –40ºC to 85ºC