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參數(shù)資料
| 型號(hào)： | PM6641TR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, 1100 kHz SWITCHING FREQ-MAX, QCC48 |
| 封裝： | 7 X 7 MM, 1 MM HEIGHT, LEAD FREE, VQFP-48 |
| 文件頁數(shù)： | 45/47頁 |
| 文件大?。?/td> | 2254K |
| 代理商： | PM6641TR |
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PM6641
Pin settings
Doc ID 13510 Rev 3
7/47
26
SS_1S5
Positive terminal of the external soft-start capacitor for 1.5 V rail.
See Chapter 7.6: Outputs soft-start on page 28 section for details.
27
COMP_1S5
Loop compensation output for 1.5 V rail. Chapter 7.3: SW regulators control
selection on page 38 sections for details.
28
VFB_1S5
Feedback input for 1.5 V rail.
See Chapter 7.5: Output voltage divider on page 27 section for details
29
SGND_1S5
Switcher power ground for 1.5 V rail.
30
SGND_1S5
Switcher power ground for 1.5 V rail.
31
VSW_1S5
Switch node for 1.5 V rail.
32
VSW_1S5
Switch node for 1.5 V rail.
33
VIN_1S5
Power supply input for 1.5 V rail.
34
EN_1S05
Enable input for 1.05 V rail.
35
EN_1S5
Enable input for 1.5 V rail.
36
EN_VTT
Enable input for VTT rail. High in S0 system states. See Chapter 7.1.4: S3
and S5 power management pins on page 22 section for details.
37
EN_1S8
Enable input for 1.8 V (VDDQ) rail. High in S0-S3 system states.
for details.
38
AGND
Analog and signal ground.
39
SET_PH1
Switching regulator phase control.
See Chapter 7.9: Phase management on page 30 section for details.
40
AGND
Analog and signal ground.
41
AVCC
Analog circuitry supply. Connect to +5 V by a simple RC filter.
42
VTTGND
LDO linear regulator power ground.
43
VTT
LDO linear regulator output. DDR2-3 termination voltage. See Chapter 7.1:
buffered reference on page 21 sections for details.
44
LDOIN
LDO linear regulator input. Typically connected to the 1.8 V rail.
45
VTTREF
Reference voltage buffer output. See Chapter 7.1: Memory supply on
page 21 sections for details.
46
DSCG
Tracking/non-tracking discharge selection for DDR2-3 section. See
Chapter 7.7: Outputs soft-end on page 29 section for details.
47
VTTFB
Feedback input for VTT linear regulator output.
48
VCC
+5 V switching circuitry supply. Bypass to AGND by a 100 nF capacitor.
Table 2.
Pin functions (continued)
n°
Pin
Function
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