Typical Performance Characteristics
Feedback
Pin Current
(Circuit of
Figure 2)
(Continued)
Junction to Ambient
Thermal Resistance
DS011394-39
DS011394-40
Continuous Mode Switching Waveforms
V
OUT
= 5V, 500 mA Load Current, L = 330 µH
Discontinuous Mode Switching Waveforms
V
OUT
= 5V, 100 mA Load Current, L = 100 µH
DS011394-6
DS011394-7
Notes:
A: Output Pin Voltage, 10V/div
B: Inductor Current, 0.2 A/div
C: Output Ripple Voltage, 20 mV/div,
AC-Coupled
Horizontal Time Base: 5 µs/div
Notes:
A: Output Pin Voltage, 10V/div
B: Inductor Current, 0.2 A/div
C: Output Ripple Voltage, 20 mV/div,
AC-Coupled
Horizontal Time Base: 5 µs/div
500 mA Load Transient Response for Continuous
Mode Operation. L = 330 µH, C
OUT
= 300 µF
250 mA Load Transient Response for Discontinuous
Mode Operation. L = 68 µH, C
OUT
= 470 µF
DS011394-8
DS011394-9
Notes:
A: Output Voltage, 50 mV/div.
AC Coupled
B: 100 mA to 500 mA Load Pulse
Horizontal Time Base: 200 µs/div
Notes:
A: Output Voltage, 50 mV/div.
AC Coupled
B: 50 mA to 250 mA Load Pulse
Horizontal Time Base: 200 µs/div
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