Rainbow Electronics MAX8649 - Manual (Page 13)

MAX8649
1.8A Step-Down Regulator with Differential
Remote Sense in 2mm x 2mm WLP
______________________________________________________________________________________ 13
A: V
DD
PULLED LOW, I 2 C REGISTERS RESET TO DEFAULT VALUES (SEE TABLE 1) AND THE OUTPUT VOLTAGE CHANGES TO THE DEFAULT VALUE.
B: EN LOGIC INPUT PULLED LOW, STEP-DOWN REGULATOR ENTERS SHUTDOWN MODE.
IN
OUT
EN
V DD
A B
Figure 3a. Shutdown by Pulling V DD Low Before EN
A: EN LOGIC INPUT PULLED LOW, STEP-DOWN REGULATOR ENTERS I 2 C READY MODE, OUTPUT DISABLED.
B: V DD PULLED LOW, I 2 C REGISTERS RESET TO DEFAULT VALUES (SEE TABLE 1).
IN
OUT
EN
V DD
A B
Figure 3b. Shutdown by Pulling EN Low Before V
DD
A: IN1 DROPS BELOW UVLO, IC ENTERS SHUTDOWN MODE, I 2 C REGISTERS RESET TO DEFAULT VALUES (SEE TABLE 1).
IN1
OUT
EN
V
DD
A
Figure 3c. Shutdown Due to IN1 Undervoltage Lockout