CMPWR150 datasheet(10/15 Pages) ONSEMI

10 / 15 page

CMPWR150

Rev. 3 | Page 10 of 15 | www.onsemi.com

OUT offset = 3.3V,

CC offset = 4.3V

PowerUpVaux30v.bmp

Figure 8. V

CC Power-up (VAUX = 3.0V)

CC Power-down (VAUX = 3.3V).

Figure 9 shows the output response as V

CC approaches the deselect threshold

during a power-down transition. V

AUX of 3.3V remains present. When VCC reaches the deselect threshold (4.1V),

the regulator turns off. This causes a step change reduction in V

CC current resulting in a small voltage increase

at the V

CC input. This disturbance is approximately 100mV and the built-in hysteresis of 250mV ensures the

regulator remains disabled throughout the transient. The output voltage experiences a disturbance of

approximately 100mV during the transition.

OUT offset = 3.3V,

CC offset = 4.3V

PowerDwnVaux33v.bmp

Figure 9. V

CC Power-down (VAUX = 3.3V)

Load Step Response. Figure 10 shows the output response of the regulator during a step load change from

5mA to 500mA (represented on Ch1). An initial transient overshoot of 50mV occurs and the output settles to its

final voltage within a few microseconds. The dc voltage disturbance on the output is approximately 75mV,

which demonstrates the regulator output impedance of 0.15

Ω.

OUT offset = 3.3V

CMPWR150 数据表(PDF) 10 Page - ON Semiconductor