TYPICAL CHARACTERISTICS

RECOMMENDED OPERATING CONDITIONS

ABSOLUTE MAXIMUM RATINGS

INHIBIT

Input Voltage

• 18 to 40 VDC (19 to 40 VDC MTW2805S)

Output Power

• 30 watts

Lead Soldering Temperature (10 sec per lead)

• 300°C

Storage Temperature Range (Case)

• –55°C to +125°C

B4-10

MTW SERIES

30 WATT

Output Voltage Temperature Coefficient

• 100 ppm/°C, typical

Input to Output Capacitance

• 80 pF typical single output models

• 70 pF typical MTW2812D

• 60 pF typical MTW2815D

Current Limit

• 125% of full load typical

Isolation

• 100 megohm minimum at 500 V

Conversion Frequency

• 240 to 300 kHz

Inhibit Pin Voltage (unit enabled)

• 11 to 15 V single output models

• 8 to 12 V MTW2812D

• 10 to 14 V MTW2815D

Input Voltage Range

• 18 to 40 VDC continuous (19 to 40 MTW2805S)

• 50 V for 50 msec transient

Case Operating Temperature (Tc)

• –55°C to +85°C full power

• –55°C to +115°C absolute

Derating Output Power/Current

• Linearly from 100% at 85°C to 0% at 115° C

Inhibit TTL Open Collector

• Logic low (output disabled)

Inhibit pin current 1 mA typical

• Referenced to input common

• Logic high (output enabled)

Open collector

Electrical Characteristics: 25°C Tc, 28 VDC Vin, 100% load, unless otherwise specified.

MTW2805S

MTW2812S

MTW2815S

PARAMETER

CONDITIONS

MIN

TYP

MAX

MIN

TYP

MAX

MIN

TYP

MAX

UNITS

OUTPUT VOLTAGE

4.95

5.0

5.05

11.88

12.0

12.12

14.85

15.0

15.15

VDC

OUTPUT CURRENT

—

—

6.0

—

—

2.5

—

—

2.0

A

OUTPUT POWER

–55°C TO +85°C

—

—

30.0

—

—

30.0

—

—

30.0

W

OUTPUT RIPPLE

BW

≤ 2 MHz

—

30

50

—

30

65

—

30

65

mV p-p

—

7

20

—

10

25

—

10

25

mV

NO LOAD TO FULL

—

5

20

—

10

20

—

10

20

mV

INPUT VOLTAGE

NO LOAD TO FULL

19

28

40

18

28

40

18

28

40

VDC

–55°C TO +85°C

TRANSIENT 50 ms

—

—

50

—

—

50

—

—

50

INPUT CURRENT

NO LOAD

—

15

20

—

20

35

—

20

35

FULL LOAD

—

—

1370

—

—

1400

—

—

1400

mA

INHIBITED

—

—

15

—

—

22

—

—

22

INPUT RIPPLE

CURRENT

BW

≤ 2 MHz

—

5

10

—

10

20

—

10

20

mA p-p

EFFICIENCY

80

82

—

82

84

—

84

86

—

%

START-UP

—15

—

—

30

—

—

40

—

ms

OVERSHOOT

—

300

—

—

400

—

—

400

—

mV

Notes

1. For MTW2805S, with the remote sense pins connected to the load and no resistance between the output pins and load.

2. A low output impedance power source is required on the input to realize this start-up time. If less than full surge current is available, start-up time

will be longer

CAUTION

Permanent damage to the MTW2805S will result if pin 6 is shorted to ground. Damage may also result if pin 4 or pin 5 is disconnected from the load

during operation with the remote sense leads connected to the load. If remote sense pins are not connected to the load, the output voltage of the

MTW2805S will rise to approximately 6.2 VDC measured across pins 4 and 5.