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參數(shù)資料
| 型號： | PM6670S |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3 A SWITCHING CONTROLLER, QCC24 |
| 封裝： | 4 X 4 MM, LEAD FREE, VFQFPN-24 |
| 文件頁數(shù)： | 51/54頁 |
| 文件大?。?/td> | 742K |
| 代理商： | PM6670S |
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Pin settings
PM6670S
6/54
Doc ID 14432 Rev 4
2.2
Pin description
Table 2.
Pin functions
N°
Pin
Function
1
VTTGND
LDO power ground. Connect to negative terminal of VTT output capacitor.
2VTTSNS
LDO remote sensing. Connect as close as possible to the load via a low
noise PCB trace.
3DDRSEL
DDR voltage selector (if MODE is tied to VCC) or pulse-skip/no-audible
pulse-skip selector in adjustable mode (MODE voltage lower than 3 V). See
4VTTREF
Low noise buffered DDR reference voltage. A 22 nF (minimum) ceramic
bypass capacitor is required in order to achieve stability.
5SGND
Ground reference for analog circuitry, control logic and VTTREF buffer.
Connect together with the thermal pad and VTTGND to a low impedance
ground plane. See the Application Note for details.
6AVCC
+5 V supply for internal logic. Connect to +5 V rail through a simple RC
filtering network.
7VREF
High accuracy output voltage reference (1.237 V) for multilevel pins setting.
It can deliver up to 50
μA. Connect a 100 nF capacitor between VREF and
SGND in order to enhance noise rejection.
8VOSC
Frequency selection. Connect to the central tap of a resistor divider to set
the desired switching frequency. The pin cannot be left floating. See
9
VSNS
VDDQ output remote sensing. Discharge path for VDDQ in Non-Tracking
Discharge. Input for internal resistor divider that provides VDDQ/2 to
VTTREF and VTT. Connect as close as possible to the load via a low noise
PCB trace.
10
MODE
Mode of operation selector. If MODE pin voltage is higher than 4 V, the fixed
output mode is selected. If MODE pin voltage is lower than 4 V, it is used as
negative input of the error amplifier. See Section 7.1.4: Mode-of-operation
11
COMP
DC voltage error compensation Input for the switching section. Refer
12
DSCG
Discharge mode selection. Refer to Section 7.1.8: VDDQ output discharge
on page 34 for tracking/non-tracking discharge or no-discharge options.
13
S5
Switching controller enable. Connect to S5 system status signal to meet S0-
S5 power management states compliance. See Section 7.3: S3 and S5
power management pins on page 38, S5 pin can't be left floating.
14
S3
Linear regulator enable. Connect to S3 system status signal to meet S0-S5
power management states compliance. See Section 7.3: S3 and S5 power
management pins on page 38, S3 pin can't be left floating.
15
PG
Power Good signal (open drain output). High when VDDQ output voltage is
within ±10 % of nominal value.
16
PGND
Power ground for the switching section.
17
LGATE
Low-side gate driver output.
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| PM6670STR | 功能描述:DC/DC 開關(guān)控制器 Complete DDR2/3 Mem Pwr supply controllr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| PM6670TR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Complete DDR2/3 Mem Pwr supply controllr RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| PM6675 | 制造商:STMicroelectronics 功能描述: 制造商:STMicroelectronics 功能描述:LDO CNTRLR STDN 0.6V TO 3.3V/1.5V 24PIN VFQFPN - Rail/Tube |
| PM6675AS | 功能描述:DC/DC 開關(guān)控制器 DDR 2/3 Memory Pwr Cntrl RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
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