LTC6652

8

6652fb

PIN FUNCTIONS

DNC (Pin 1): Do Not Connect.

GND will improve PSRR.

SHDN (Pin 3): Shutdown Input. This active low input

powers down the device to <2μA. For normal operation

GND (Pin 4): Device Ground.

required. For some applications, a capacitor between 0.1μF

to 10μF can be beneficial. See the graphs in the Typical

Performance Characteristics section for further details.

GND (Pins 5,7,8): Internal function. Ground these pins.

LTC6652s. Curves from the LTC6652-1.25, LTC6652-2.5 and the LTC6652-5 represent the extremes and typical of the voltage options.

Characteristic curves for other output voltages fall between these curves and can be estimated based on their output.

Power Supply Rejection Ratio

vs Frequency

Output Impedance vs Frequency

FREQUENCY (kHz)

0.01

–60

–50

–40

–30

–20

0.1

1

10

100

1000

6652 G07

–70

–80

–90

–100

–10

0

FREQUENCY (kHz)

1

10

100

0.01

1

10

100

6652 G08

0.1

0.1

SHDN Input Voltage Thresholds

2

1.5

2.0

0.5

1.0

2.5

610

6652 G13

4

812

14

0