Data Sheet

ADM3260

Rev. E | Page 13 of 19

(1ms/DIV)

10% LOAD

90% LOAD

Figure 11. Typical VISO Transient Load Response, 5 V Input, 3.3 V Output,

10% to 90% Load Step

TIME (µs)

4.970

4.965

4.960

4.955

4.950

4.945

4.940

1

0

2

3

4

Figure 12. Typical VISO = 5 V Output Voltage Ripple at 90% Load

TIME (µs)

3.280

3.278

3.276

3.274

3.272

3.270

1

0

2

3

4

Figure 13. Typical VISO = 3.3 V Output Voltage Ripple at 90% Load

2.0

2.5

3.0

3.5

4.0

4.5

5.0

3.0

3.5

4.0

4.5

5.0

5.5

6.0

OUTPUT VOLTAGE (V)

30mA LOAD

20mA LOAD

10mA LOAD

Figure 14. Relationship Between Output Voltage and Required Input Voltage,

Under Load to Maintain >80% Duty Factor in the PWM

500

450

400

350

300

250

200

150

100

–20

0

20

40

AMBIENT TEMPERATURE (°C)

60

80

100

120

–40

VIN = 5V/VISO = 5V

VIN = 5V/VISO = 3.3V

Figure 15. Power Dissipation with a 30 mA Load vs. Ambient Temperature

500

450

400

350

300

250

200

150

100

–20

0

20

40

AMBIENT TEMPERATURE (°C)

60

80

100

120

–40

VIN = 5V/VISO = 3.3V

VIN = 3.3V/VISO = 3.3V

VIN = 5V/VISO= 5V

Figure 16. Power Dissipation with a 20 mA Load vs. Ambient Temperature