_______________________________________________________________________________________

7

_____________Applications Information

Setting the MAX6160 Output Voltage

Set the output voltage on the MAX6160 by connecting

a resistor divider between OUT, ADJ, and GND

(Figure 1). Choose R1 according to the following equa-

tion:

Ω)

compensates for the MAX6160's change in ADJ input

current over temperature. When R1 is chosen correctly,

the change in voltage across R1 caused by the ADJ

input current is properly cancelled. Choose R1 to within

±5% of this calculated value (nearest standard value

plus specified resistor tolerance) to optimize the output

voltage temperature coefficient. Using R1 = 215k

Ω:

which is also the nearest 0.1% resistor value.

Choose R2 according to the following equation:

(2.5V / 1.23V)

≈ 215Ω, which is the nearest standard-

value 0.1% resistor.

Input Bypassing

For the best line-transient performance, decouple the

input with a 0.1µF ceramic capacitor, as shown in the

Typical Operating Circuit. Locate the capacitor as

close to the device pin as possible. Where transient

performance is less important, no capacitor is

necessary.

Output Bypassing

The MAX6125/MAX6141/MAX6145/MAX6150/MAX6160

do not require an output capacitor. They are stable for

capacitive loads from 0nF to 10nF. If your application

requires an output charge reservoir (e.g., to decouple

the reference from a DAC’s input), then make sure that

the total output capacitive load does not exceed 10nF

for optimum settling-time performance.

SOT23, Low-Cost, Low-Dropout,

3-Terminal Voltage References

______________________________________________________________Pin Description

Adjustable output voltage feedback input. Connect a resistor

divider between OUT, ADJ, and GND (Figure 1).

ADJ

5**

Input Voltage

IN

8

Ground

GND

4

No Connection. Not internally connected.

N.C.

2, 3, 5*, 6, 7

Reference Output

OUT

1

FUNCTION

NAME

SO

—

1

3

—

2

SOT23-3

2

3

1

—

4

SOT143

*

Except MAX6160.

**

MAX6160 only.

MAX6160

OUT

ADJ

GND

IN

R2 = –—––––

R1

R1

R2

Figure 1. MAX6160 Adjustable Output Circuit

PIN

R2 = 215k

2.5V

1.23V

- 1

208k

Ω









≈Ω,