ADN8834ACPZ-R2 datasheet(9/27 Pages) AD

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Data Sheet

ADN8834

Rev. B | Page 9 of 27

–0.10

–0.08

–0.06

–0.04

–0.02

0.02

0.04

0.06

0.08

0.10

100

120

140

160

180

200

TIME (Seconds)

T = 15°C

T = 25°C

T = 35°C

T = 45°C

T = 55°C

Figure 10. Thermal Stability over Ambient Temperature at VIN = 3.3 V,

VTEMPSET = 1 V

–0.10

–0.08

–0.06

–0.04

–0.02

0.02

0.04

0.06

0.08

0.10

100

120

140

160

180

200

TIME (Seconds)

T = 15°C

T = 25°C

T = 35°C

T = 45°C

T = 55°C

Figure 11. Thermal Stability over Ambient Temperature at VIN = 3.3 V,

VTEMPSET = 1.5 V

VIN = 2.7V AT NO LOAD

VIN = 3.3V AT NO LOAD

VIN = 5.5V AT NO LOAD

VIN = 2.7V AT 5mA LOAD

VIN = 3.3V AT 5mA LOAD

VIN = 5.5V AT 5mA LOAD

1.0

–50

AMBIENT TEMPERATURE (°C)

100

150

0.8

0.6

0.4

0.2

–0.2

–0.4

–0.6

–0.8

–1.0

Figure 12. VREF Error vs. Ambient Temperature

0.20

–0.20

–0.15

–0.10

–0.05

0.05

0.10

0.15

LOAD CURRENT AT VREF (mA)

VIN = 3.3V, ITEC = 0A

VIN = 3.3V, ITEC = 0.5A, COOLING

VIN = 3.3V, ITEC = 0.5A, HEATING

VIN = 5.0V, ITEC = 0A

VIN = 5.0V, ITEC = 0.5A, COOLING

VIN = 5.0V, ITEC = 0.5A, HEATING

Figure 13. VREF Load Regulation

–20

–15

–10

–5

0.5

1.0

1.5

TEC CURRENT (A)

VIN = 3.3V

VIN = 5V

Figure 14. ITEC Current Reading Error vs. TEC Current in Cooling Mode

–20

–15

–10

–5

–1.5

–1.0

–0.5

TEC CURRENT (A)

VIN = 3.3V

VIN = 5V

Figure 15. ITEC Current Reading Error vs. TEC Current in Heating Mode

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