AN2937 datasheet(22/41 Pages) STMICROELECTRONICS

Part #	AN2937

Description	Power system demonstration kit based on the PM6686 dual

PDF	41 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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22 / 41 page

Jumper settings

AN2937

22/41

Doc ID 15418 Rev 1

9.12

Connection of LDO output (5 V) to the PVCC pin

(LDO5V_BYP)

9.13

Regulation of the charge pump CP (CP SEL)

9.14

Output 1, virtual ESR connection

Table 14.

Jumper S12 LDO5V BYP (connect PVCC pin to S12)

Position

Connection of LDO output (5 V) to PVCC pin

Shorted

If LDOREFIN = GND, LDO regulates 5 V. In this case the PVCC and VCC pin of the

device can be supplied with the LDO by setting the jumper in this position.

Open

PVCC and VCC need to be supplied with an external 5 V source. The LDO is

disconnected from the PVCC pin.

Table 15.

Jumper S13 CP SEL (connect CP_FB pin to S13)

Position

Regulation of the charge pump CP

VCC

or left floating

The charge pump controller is disabled.

External divider

The charge pump regulates the voltage set with the external divider.

Table 16.

Jumper S14 VESR1

Position

Virtual ESR enable circuit for section 1

Left floating

Virtual ESR circuit is disabled.

VESR1

Virtual ESR circuit is enabled.

AN2937 Datasheet(PDF) 22 Page - STMicroelectronics