Elmo
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Elmo is the codename of the Power Management IC (PMIC) of the PS Vita. The PMIC is responsible for generating the various voltages required by Kermit and probably other devices on the board.
Hardware
The Elmo PMIC is manufactured by Fujitsu. All models are part of the custom "MB44" series but the exact model used depends on the unit.
Ernie can communicate with Elmo via I²C.
MB44C026
Seen in: DEM-3000G, PDEL-1000 (IRT-002)
Date codes: 1021, 1139
MB44026A
Seen in: PCH-1001 FCC application unit, PCH-1xxx (IRS-002), VTE-1xxx (DOL-1001)
Date codes: 1125, 1149, 1221
MB44C029
Seen in: PCH-1000 (IRS-1001)
Date codes: 1240
MB44C032
Uses a black package instead of white/metallic.
Seen in: PCH-2001 FCC application unit, PCH-2000 (USS-1001)
Date codes: 1448, 1330