MAX14578E_12 Datasheet, PDF (15/23 Pages) Maxim Integrated Products – USB Battery Charger Detectors

MAX14578E/MAX14578AE
USB Battery Charger Detectors
DORMANT
CE_ = HI-Z
VB < VVBDET
V_B > V_VBDET
MAX14578E: USB_CHGDET = 1
MAX14578AE: VEN = 0V
DCD COMPLIANT
DCD
BEGIN DCD TEST
NOT DCD COMPLIANT
D+/D- SHORT TEST
SPECIAL CHARGER
SONY CHARGER TEST
APPLE CHARGER TEST
DCP/CDP TEST
() MAX14578AE ONLY.
Figure 1. Charger-Type-Detection Sequence
VB
CHARGER CONFIGURATION
(USB SWITCH CLOSED)
CONFIGURE CE_
VB < VVBDET
tMDEB
tDP_SRC_ON
t_MDEB
tMDEB
tMDEB
DCD START
ENABLE STANDARD DOWNSTREAM
PORT DETECTION
ENABLE
COMPARATORS
ENABLE CHARGING DOWNSTREAM
PORT DETECTION
LOUT ENABLE (MAX14578AE)
(SFOUTASRT = 0)
CHGRUN
Figure 2. Charger-Detection Timing
Maxim Integrated
VVBDET DCD PASS
D+/D- SHORT
DEDICATED CHARGER
CHG_TYP = 011
  15