Fujitsu MB39C026 User Manual
Fujitsu ASSP Product
Power Management
Evaluation Board Manual
Evaluation Board Manual
MB39C026
MB39C026
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(SON--
(SON
MB39C022--
MB39C022
(MB39C026 and MB39C022 share the same evaluation board)
(MB39C026 and MB39C022 share the same evaluation board)
Rev 1.0E
June, 2008
10)
10)
EVB03
EVB03
MB39C026 Evaluation Board
Fujitsu ASSP Product
Power Management
1. Description
1. Description
The MB39C026 is a two channels power supply IC. It consists of one channel
DC/DC Converter and one channel LDO regulator. The DC/DC converter has fast
line transient response and load regulation with current mode control topology.
Moreover, the integrated LDO provides an auxiliary output supply for noise
sensitive circuit.
2. Evaluation Board Specification
2. Evaluation Board Specification
Parameter
Input Voltage
Output Voltage
Output Current
Oscillation Frequency
MB39C026G
MB39C026J
MB39C026L
MB39C026N
CH1 0 - 600
CH2 0 - 300
CH1 0.8 1.2 5*
CH2 3.3#
CH1 0.8 1.2 5*
CH2 2.85
CH1 0.8 1.2 5*
CH2 1.8
CH1 0.8 1.8 5*
CH2 1.2
Min. Typ. Max.
3.2 3.7 5.5
- 2.0 -
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* CH1 Remark:
Maximum Output voltage is limited by the input voltage (VIN). The maximum
voltage CH1 could reach is 0.5V less than VIN.
# CH2 Remark:
The CH2 output voltage is limited by input voltage (VIN). The CH2 dropout of
MB39C026G is Vdrop. Thus the minimum input voltage should be Vdrop above
the CH2 output. Vdrop is 0.2V(Typ).
MB39C026 Evaluation Board
Fujitsu ASSP Product
Power Management
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
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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
MB39C026 Evaluation Board
Fujitsu ASSP Product
Power Management
5. Evaluation Board Layout
5. Evaluation Board Layout
MB39C022-EVB03 Rev 1.0 (Top View)
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Top Side Silkscreen
Bottom Side Silkscreen
MB39C026 Evaluation Board
Fujitsu ASSP Product
Power Management
Board Layout (Top View)
MB39C022-EVB03 Rev 1.0
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Top Side Metal
MB39C026 Evaluation Board
Bottom Side Metal
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