Fujitsu ASSP Product
3/14
Power Management
MB39C026 Evaluation Board
4. Setup & Checkup
4. Setup & Checkup
(1) Setup
• Connect a 3.7V power supply the VIN and PGND.
• Connect EN1 and EN2 = VIN.
• Connect VO1 and VO2 to loadings or measurement devices.
(2) Confirmation of Operation
• Turn on the power to VIN(power supply voltage).
•When IC operates normally, the voltage level at each output are as follows:
MB39C026G: VO1=1.2V, VO2=3.3V, POR=VIN
MB39C026J: VO1=1.2V, VO2=2.85V, POR=VIN
MB39C026L: VO1=1.2V, VO2=1.8V, POR=VIN
MB39C026N: VO1=1.8V, VO2=1.2V, POR=VIN
3. Terminal information
3. Terminal information
Pin Name
Description
VIN
Input voltage terminal
PGND
Ground terminal for power supply
VO1
CH1 DC/DC converter output terminal
PGND1
Ground terminal for CH1 DC/DC converter
VO2
CH2 LDO output terminal
AGND
Ground terminal for LDO output
POR
Power-On-Reset output terminal
EN1
CH1 DC/DC converter control terminal
EN2
CH2 LDO control terminal
