L6566B データシートの表示（PDF） - STMicroelectronics

部品番号

コンポーネント説明

メーカー

L6566B

Multi-mode controller for SMPS

STMicroelectronics 

L6566B

Application information

5.14

Summary of L6566B power management functions

It has been seen that the device is provided with a number of power management functions:

multiple operating mode upon loading conditions and protection functions. To help the

designer familiarize with these functions, in the following tables all of theme are summarized

with their respective activation mechanism and the resulting status of the most important

pins. This can be useful not only for a correct use of the IC but also for diagnostic purposes:

especially at prototyping/debugging stage, it is quite common to bump into unwanted

activation of some function, and these tables can be used as a sort of quick troubleshooting

guide.

Table 5. L6566B light load management features

Feature Description

Caused

by

IC Vcc_restart Consump. VREF

behavior

(V)

(Iqdis,mA) (V)

SS

VCOMP OSC

FMOD

(V)

(V)

Burst

mode

Controlled

ON-OFF

operation for VCOMP < Pulse

low power VCOMPBM skipping

consumptio - Hys operation

n at light

load

N.A.

VCOMPBM

1.34 mA 5 unchanged -HYS to 0/1 0

VCOMPBM

41/51

Share Link: