LTC2672 datasheet(13/27 Pages) AD

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Data Sheet

LTC2672

TYPICAL PERFORMANCE CHARACTERISTICS

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Rev. B | 13 of 27

5µs/DIV

AVERAGE OF 1024 EVENTS

tSETTLE = 3.8µs TO ±0.024%,

21.1µs TO ±0.0015%

VOUT, 1V/DIV

CS/LD

VOUT RESIDUAL 500µV/DIV

SPAN = 3.125mA

RLOAD = 800Ω

Figure 13. Settling 0 mA to 3.125 mA Step

2ms/DIV

tSETTLE = 3.5µs TO ±0.024%,

200µs TO ±0.0015%

AVERAGE OF 1024 EVENTS.

tSETTLE MEASURED AT VDDX = 3.6V

TO MINIMIZE THERMAL SETTLING TAIL

CS/LD

SPAN = 200mA

RLOAD = 15Ω

VOUTX, 2V/DIV

VOUTX RESIDUAL 100µV/DIV

VDDX = 5V

VDDX = 4.5V

VDDX = 3.6V

Figure 14. Settling 0 mA to 200 mA Step

Figure 15. Offset Current Error vs. Temperature

0.709V

0.473V

0.440V

0.432V

300mA

200mA

100mA

50mA

0.25

0.50

0.75

1.00

1.25

1.50

100

150

200

250

300

350

DROPOUT VOLTAGE (V)

VDDX – V– = 4.75V

Figure 16. IOUTx vs. Dropout Voltage for Multiple Current Ranges

0.60

0.55

0.50

0.45

0.40

TOTAL SUPPLY V DDx – V– (V)

200mA RANGE

IOUTx = 200mA

Figure 17. VDROPOUT vs. Total Supply VDDx − V−

–40

–20

100

120

140

1.246

1.247

1.248

1.249

1.250

1.251

1.252

1.253

1.254

TEMPERATURE (°C)

Figure 18. VREF vs. Temperature (LFCSP)

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