S6BP501A Datasheet, PDF (12/23 Pages) Cypress Semiconductor – Wide input voltage range : 2.5V to 42V (DD3V)

PRELIMINARY
S6BP501A, S6BP502A
8. Functional Description
8.1 Operation Sequence
The operation sequence of this IC is described in this section.
Figure 8-1 Turn On and Turn Off Sequence
V_VIN
VVIN_START
V_EN5V
(*1)
VON_EN5V
V VUVLO_START
VB
V_IN3V
(DD3V output)
V_VOUT5V
Switchover from internal voltage to VVOUT5V
VUVLO_SHDN
VUVDR_PG5V
Natural discharge
Natural discharge
Natural discharge
V_PG5V
V_EN1V
tPOR_PG5V
VON_EN1V
VOFF_EN1V
V_VOUT1V
VUVDR_PG1V
Discharge
V_PG1V
V_EN3V
tPOR_PG1V
VON_EN3V
VOFF_EN3V
V_VOUT3V
VUVDR_PG3V
Discharge
V_PG3V
16 ms 8 ms
tPOR_PG3V
*1: When the VEN5V drops to the VOFF_EN5V while supplying a power to the VIN pin, the voltages, VPG1V, VPG3V, VPG5V and VHOT, are
undefined.
Document Number: 002-03396 Rev. *D
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