PM6670 datasheet(7/53 Pages) STMICROELECTRONICS

部件名	PM6670

功能描述	Complete DDR2/3 memory power supply controller

PDF	53 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

7 / 53 page

PM6670

Pin settings

7/53

VCC

+5V Low-side Gate Driver Supply. Bypass with a 100nF capacitor to PGND.

CSNS

Current Sense Input for the switching section. This pin must be connected

through a resistor to the drain of the synchronous rectifier (RDSon sensing)

to set the current limit threshold.

PHASE

Switch Node Connection and return path for the High-side Gate Driver.

HGATE

High-side Gate Driver Output

BOOT

Bootstrap Capacitor Connection. Positive Supply Input of the High-side Gate

Driver.

LDOIN

Linear Regulator Input. Connect to VDDQ in normal configuration or to a

lower supply to reduce the power dissipation. A 10

µF bypass ceramic

capacitor is suggested for noise rejection enhancement. See Section 7:

Device description on page 19

VTT

LDO Linear Regulator Output. Bypass with a 20

µF (2x10µF MLCC) filter

capacitor.

Table 2. Pin functions (continued)

N°

Function

PM6670 数据表(PDF) 7 Page - STMicroelectronics