8.3.2 Temperature Drift

The REF60xx family is designed for minimal drift error, defined as the change in output voltage over

temperature. The drift is calculated using the box method, as described by the following equation:

REF(MAX)

REF(MIN)

6

REF

V

V

Drift

10

(ppm)

V

Temperature Range

§

·

x

¨

¸

x

©

¹

(3)

8.3.3 Load Current

The REF6025, REF6030, REF6033 and REF6041 are specified to deliver current load of ±4mA. The REF6045

is specified to deliver ±3.5mA, and the REF6050 is specified to deliver ±3mA. The REF60xx are protected from

short circuits at the output by limiting the output short-circuit current.

The short-circuit current limit (ISC) of the REF60xx family of devices is adjusted by connecting a resistor (RSS)

on the SS pin. The short-circuit current limit when the REF60xx device is sourcing current can be calculated as

shown in Equation 4:

9

3

SC

SS

I

(80 * 10

) * R

(3 * 10

)

(4)

The short circuit current limit when the REF60xx device is sinking is calculated as shown in Equation 5:

9

3

SC

SS

I

(115 * 10

) * R

(4.6 * 10

)

(5)

The recommended output current of the REF60xx also depends on the resistor connected to the SS pin. The

recommended output current (sourcing and sinking) for the REF6025, REF6030, REF6033 and REF6041 is

given by Equation 6:

9

3

L

SS

I

(31.25 * 10

) * R

(0.25 * 10

)

(6)

The recommended output current (sourcing and sinking) for the REF6045 is given by Equation 7:

9

3

L

SS

I

(27.08 * 10

) * R

(0.25 * 10

)

(7)

The recommended output current (sourcing and sinking) for the REF6050 is given by Equation 8:

9

3

L

SS

I

(23.75 * 10

) * R

(0.15 * 10

)

(8)

The temperature of the device increases according to Equation 9:

‡

J

A

D

-$

T

T

P

R

(9)

where:

• TJ = junction temperature (°C).

• TA = ambient temperature (°C).

• PD = power dissipated (W).

• RθJA = junction-to-ambient thermal resistance (°C/W).

The REF60xx maximum junction temperature must not exceed the absolute maximum rating of 150°C.

REF60

SBOS708C – MAY 2016 – REVISED APRIL 2026

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