Datasheet

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2.1.12 J12 — GND
2.1.13 J13 — VINLDO/GND
2.1.14 J14 — VDD_ALIVE/GND
2.1.15 J5 — PWRFAIL
2.1.16 JP1 — DEF1
2.1.17 JP2 — DEF2
2.1.18 JP5 — DEF3
2.1.19 JP3 — DCDC1 ON/OFF
2.1.20 JP4 — DCDC2 ON/OFF
2.1.21 JP6 — DCDC3 ON/OFF
2.1.22 JP7 — PWM/PFM MODE
2.1.23 JP8 — LDO ON/OFF
2.1.24 JP9 — VDD_ALIVE/GND
Setup
Return for VLDO2.
Input voltage from the external power supply, recommended maximum 5.5V. The input current is
dependent on the load but is typically below 2A.
The EVM has this input connected to the VDCDC1 output via R11.
Output from the low drop out regulator VLDO3, maximum output current is 30mA. The default value is
1.2V.
PWRFAIL – Fault occurs when the input voltage is below 3V. It is pulled up to VIN when safe, low for fail.
Sets the default voltage for DCDC1, 2.8V or 3.3V.
Sets the default voltage for DCDC2, 1.8V or 2.5V.
Sets the default voltage for DCDC3, 0.9V or 1.375V.
EN for the DCDC1 converter. The default setting is ON.
EN for the DCDC2 converter. The default setting is ON.
EN for the DCDC3 converter. The default setting is ON.
PWM or PFM Mode jumper. The default setting is PWM.
EN for both the LDO1 and LDO2 regulators. The default setting is ON.
EN for the VDD_ALIVE low dropout regulator. The default setting is ON.
SLVU218 – August 2007 TPS650241EVM 3
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