ELECTRICAL CHARACTERISTICS CURVES
Figure5: Turn-on transient at zero load current (1 ms/div). Top
Trace: Vout (500mV/div); Bottom Trace: ON/OFF Control
(5V/div).
Figure 6: Output voltage response to step-change in load
current (50%-75% of Io, max; di/dt = 0.1A/µs). Load cap: 10µF,
100 mΩESR tantalum capacitor and 1µF ceramic capacitor.
Top Trace: Vout (50mV/div), Bottom Trace: Iout (5A/div).
is
Cs : 220uF
ESR < 0.1Ω
@20℃ 100KHZ
Cs :100uF
ESR < 0.5Ω
@20℃ 100KHZ
Vi (+)
Vi (-)
Figure 7: Output voltage response to step-change in load
current (75%-50% of Io, max; di/dt = 0.1A/µs). Load cap:
10µF, 100 mΩESR tantalum capacitor and 1µF ceramic
capacitor. Top Trace: Vout (50mV/div), Bottom Trace: Iout
5A/div).
Figure 8: Test set-up diagram showing measurement points
for Input Reflected Ripple Current (Figure 9).
Note: Measured input reflected-ripple current with a simulated
source Inductance (LTEST) of 12 µH. Capacitor Cs offset
possible battery impedance.
4
DS_S24SA1R212_05102006