ELECTRICAL CHARACTERISTICS CURVES
Figure 7: Output voltage response to step-change in load
current (75%-50% of Io, max; di/dt = 1A/µs). Load cap: 470µF
aluminum ,10uF Low ESR capacitor and 1µF ceramic
capacitor. Top Trace: Vout (200mV/div), Bottom Trace: Iout
(10
/div). Scope measurement should be made using a BNC
cable (length shorter than 20 inches). Position the load
between 51 mm to 76 mm (2 inches to 3 inches) from the
module.
Figure 8: Output voltage response to step-change in load
current (50%-75% of Io, max; di/dt = 1A/µs). Load cap: 470µF
aluminum,10uF Low ESR capacitor and 1µF ceramic capacitor.
Top Trace: Vout (200mV/div), Bottom Trace: Iout (10
/div).
Scope measurement should be made using a BNC cable
(length shorter than 20 inches
. Position the load between 51
mm to 76 mm (2 inches to 3 inches) from the module.
Figure 9: Test set-up diagram showing measurement points for
Input Terminal Ripple Current and Input Reflected Ripple
Current.
Note: Measured input reflected-ripple current with a simulated
source Inductance (L
TEST
) of 15 μH. Capacitor Cs offset
possible battery impedance. Measure current as shown above.
DS_F48SA28025_12072007
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