Datasheet

TPS65735
www.ti.com SLVSAI6–JUNE 2011
Figure 3-2. Reducing System I
Q
with Addition of a FET
Along with this system configuration, the MCU code must be written such that the MCU sits in the lowest
power state that can support an interrupt on a GPIO from a switch (slider or push button). After a valid
button press or switch action, the device can begin the power on sequence and open the FET in the
previous figure (Figure 3-2). This will allow power flow into the PMU and the system can then operate
normally.
3.3 Boost Converter Application Information
3.3.1 Setting Boost Output Voltage
To set the boost converter output voltage of this device, two external resistors that form a feedback
network are required. The values recommended below (in Table 3-1) are given for a desired quiescent
current of 5 µA when the boost is enabled and switching. See Figure 3-3 for the detail of the applications
schematic that shows the boost feedback network and the resistor names used in the table below.
Figure 3-3. Boost Feedback Network Schematic
Copyright © 2011, Texas Instruments Incorporated APPLICATION INFORMATION 27
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