NXP Semiconductors KIT34704BEPEVBE, Руководство пользователя

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KIT34704BEPEVBE Evaluation Board , Rev 1.0
Freescale Semiconductor 4
Introduction
3 Introduction
This Evaluation Board demonstrates the capability of the MC34704B as a multi-channel
power management IC (PMIC) meant to address power management needs for various
multimedia application microprocessors. It provides 5 independent voltages through
terminal block connector for an easier out-of-the-box evaluation. A single Terminal block
connector for input power supply allows the user to supply the board with either a
external DC power supply or a Li-Ion battery to fully evaluate the performance
accordingly.
The KIT34704BEPEVBE has the ability to program the switching frequency of VG and
regulators 2 through 5 as well as the default soft start timing for all regulators during
startup by changing few external components. All other features can be programmed
via I
2
C communication using a standard 100mils 4-pin header to communicate with
either the USB-I
2
C bridge included in this package or with any other I
2
C communication
device preferred by the user.
4 EVB Features
• Input voltage operation range from 2.7 to 5.5V
• 5 independent output voltages accessible through terminal blocks.
• Capable to be programmed via I
2
C
• On/Off push button
• Programable Switching frequency for REG2-5 by changing external components
• Programable default soft start for all regulators by changing external components
• 100mils 4-pin standard header connector for I
2
C communication
• Small Board Size (6.2cm x 6.2cm)
4.1 AMPD Device Description/Features
• Input voltage operation range from 2.7 to 5.5V
• 5-DC/DC switching regulators with +/-2% output voltage accuracy
• Capable of operating at up to 2.0 MHz switching frequency I2C programmability
• Output under voltage and over voltage detection for each regulator
• Over current limit detection and short circuit protection for each regulator
• Thermal limit detection for each regulator.
• Integrated Compensation for REG3 and REG8
• 5
μ
A maximum shutdown current (All regulators are off, 5.5V VIN)
• True Cut-off on all of the boost and buck-boost regulators.