DS_H48SA53010_08042011

4

ELECTRICAL CHARACTERISTICS CURVES

Figure 5: Turn-on transient at zero load current (10 ms/div).

Top Trace: Vout, 10V/div; Bottom Trace: ON/OFF input, 5V/div.

Figure 6: Output voltage response to step-change in load current

(75%-50% of Io, max; di/dt = 2.5A/µs).

Load cap: 300µF, electrolytic capacitor and 100µF ceramic

capacitor. Top Trace: Vout (100mV/div), Bottom Trace: Iout

(5A/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 7: Output voltage response to step-change in load

current (50%-75% of Io, max; di/dt = 2.5A/µs).

Load cap: 300µF, electrolytic capacitor and 100µF ceramic

capacitor. Top Trace: Vout (100 mV/div), Bottom Trace: Iout

(5A/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: 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 (LTEST) of 12 µH. Capacitor Cs offset possible

battery impedance. Measure current as shown below.