LW025F datasheet(3/16 Pages) MACOM

3 / 16 page

Tyco Electronics Corp.

Advance Data Sheet

March 1999

36 Vdc to 75 Vdc Inputs; 25 W

LW025 Single-Output-Series Power Modules:

Electrical Specifications (continued)

Table 2. Output Specifications

Table 3. Isolation Specifications

General Specifications

Parameter

Device

Symbol

Min

Typ

Max

Unit

Output Voltage Set Point

(VI = 48 V; IO = IO, max; TC = 25 °C)

LW025F

LW025A

VO, set

3.25

4.92

3.3

5.0

3.35

5.08

Vdc

Output Voltage

(Over all line, load, and temperature conditions

until end of life; see Figure 12.)

LW025F

LW025A

3.17

4.85

—

3.43

5.15

Vdc

Output Regulation:

Line (VI = 36 V to 75 V)

Load (IO = IO, min to IO, max)

Temperature (TC = –40 °C to +100 °C)

All

—

0.01

0.05

0.5

0.1

0.4

1.0

%VO

Output Ripple and Noise (See Figure 11.):

RMS

Peak-to-peak (5 Hz to 20 MHz)

All

—

100

mVrms

mVp-p

Output Current

(At IO < IO, min, the modules may exceed output

ripple specifications.)

All

0.4

—

5.0

Output Current-limit Inception

(VO = 90% x VO, set; see Figures 3 and 4.)

All

103

—

150

%IO, max

Output Short-circuit Current (VO = 250 mV)

All

—135

200

%IO, max

Efficiency

(VI = VI, nom; IO = IO, max; TC = 25 °C; see Figures 5,

6, and 12.)

LW025F

LW025A

—

Switching Frequency

All

—

256

—

kHz

Dynamic Response

(ýIO/ýt = 1 A/10 µs, VI = VI, nom, TA = 25 °C):

Load Change from IO = 50% to 75% of IO, max:

Peak Deviation

Settling Time (VO < 10% peak deviation)

Load Change from IO = 50% to 25% of IO, max:

Peak Deviation

Settling Time (VO < 10% peak deviation)

All

—

0.5

—

%VO, set

Parameter

Min

Typ

Max

Unit

Isolation Capacitance

—

0.002

—

µF

Isolation Resistance

—

M¾

Parameter

Min

Typ

Max

Unit

Calculated MTBF (IO = 80% of IO, max; TC = 40 °C)

5,500,000

hours

Weight

—

54 (1.9)

g (oz.)

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