Datasheet

Pin settings PM6641
6/47 Doc ID 13510 Rev 3
2.2 Pin description
Table 2. Pin functions
n° Pin Function
1 AGND Analog and signal ground.
2 SET_SWF
Switching frequency setting input.
See Chapter 7.8: Switching frequency selection on page 29
3 VOUT_1S8 VDDQ/2 divider input and discharge path for 1.8 V rail.
4CSNS
Current limit setting input for all rails.
See Chapter 7.10: Peak current limit on page 31
5 SGND_1S8 Switcher power ground for 1.8 V rail.
6 SGND_1S8 Switcher power ground for 1.8 V rail.
7 VSW_1S8 Switch node for 1.8 V rail.
8 VSW_1S8 Switch node for 1.8 V rail.
9 VIN_1S8 Power supply input for 1.8 V rail.
10 VIN_1S8 Power supply input for 1.8 V rail.
11 VFB_1S8
Feedback input for 1.8 V rail.
See Chapter 7.5: Output voltage divider on page 27
12 COMP_1S8
Loop compensation output for 1.8 V rail. See Chapter 7.3: SW regulators
control loop on page 24 and Chapter 8.4: SW regulator compensation
components selection on page 38 sections for details.
13 SS_1S8
Positive terminal of the external soft-start capacitor for 1.8 V rail.
See Chapter 7.6: Outputs soft-start on page 28 section for details.
14 SS_1S05
Positive terminal of the external soft-start capacitor for 1.05 V rail.
See Chapter 7.6: Outputs soft-start on page 28 section for details.
15 COMP_1S05
Loop compensation output for 1.05 V rail. See Chapter 7.3: SW regulators
control loop on page 24 and Chapter 8.4: SW regulator compensation
components selection on page 38 for details.
16 VFB_1S05
Feedback input for 1.05 V rail.
See Chapter 7.5: Output voltage divider on page 27 section for details
17 SGND_1S05 Switcher power ground for 1.05 V rail.
18 SGND_1S05 Switcher power ground for 1.05 V rail.
19 VSW_1S05 Switch node for 1.05 V rail.
20 VSW_1S05 Switch node for 1.05 V rail.
21 VIN_1S05 Power supply input for 1.05 V rail.
22 VIN_1S05 Power supply input for 1.05 V rail.
23 PG_1S05
Power Good signal for 1.05 V rail. Open drain. See Chapter 7.2: Chipset
supply on page 22 section for details.
24 PG_1S8
Power Good signal for 1.8 V rail. Open drain. See Chapter 7.1.1: VDDQ
switching regulator on page 20 section for details.
25 PG_1S5
Power Good signal for 1.5 V rail. Open drain. See Chapter 7.2: Chipset
supply on page 22 section for details.