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12

LVR Series

Low-TCR Current Sense Chips

The resistors are constructed using out-

standing TCR level material, which makes

LVR resistors excellent for current sensing

application in battery charger circuit & DC-DC

converter. The composition of the resistive

material is adjusted to give the LVR series

resistors more resistive stability than the

competition in very small package sizes.

Series

Size

Power

Rating

Resistance Range

TCR (ppm/°C)

Tolerance

LVR02A 0201

0.1W

5mΩ - 10mΩ

150ppm/°C

1%, 5%

LVR04A 0402

0.125W

2.5mΩ

5mΩ - 20mΩ

±350 ppm/°C

±150 ppm/°C

1%, 5%

Se R ie S Specification S

cha R acte R i S tic S

Operating

Temp. Range

–55°C to +125°C

Power

Rating

Standard rated power at 70°C; see chart above

Rated

Voltage

The DC or AC (rms) continuous working voltage cor-

responding to the rated power is determined by the

following formula:

V = √(PxR)

or max. working voltage whichever is less, where:

V = Cont. rated DC or AC (rms) working voltage (V)

P = Rated power (W)

R = Resistance value (Ω)

Temperature

Coeff. of

Resistance

Size

Resistance range

TCR

0201

5mΩ - 10mΩ

±150 ppm/°C

0402

2.5mΩ

±350 ppm/°C

5mΩ - 20mΩ

±150 ppm/°C

Terminations

Cu, Ni, matte Tin

100

Ambient Temperature, °C

60

20

0

80

40

-40

0

120 140 160

-20

-60

20

80 100

40 60

70°

-55°

125°

Derating

app L ica tion S

•Consumergoods

•Computer

•Telecom/Datacom

•Industrial/Powersupply

•AlternativeEnergy

•Carelectronics

•Battery

270°

190°

Time (sec.)

200

50

50

0

100

150

250

200

0

250

300

100

150

Preheating

ramp up

rate <3K/s

ramp up

rate <3K/s

ramp down

rate <6K/s

Reflow Soldering Conditions