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參數(shù)資料
| 型號(hào)： | PM6670AS |
| 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)： | 50/53頁 |
| 文件大?。?/td> | 745K |
| 代理商： | PM6670AS |
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Pin settings
PM6670AS
6/53
Doc ID 14436 Rev 2
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
Mode of Operation Selection section for details.
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 Device
Description section for details.
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 Mode of Operation Selection
section for details.
11
COMP
DC voltage error compensation input for the switching section. Refer to
Mode of Operation Selection section for more details.
12
DSCG
Discharge mode selection. Refer to output discharge selection section 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 Power Management Pins
section for details. 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 Power Management Pins section for details. 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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| PM6670ASTR | 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(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| PM6670ATR | 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(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| PM6670S | 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(fēng)格: 封裝 / 箱體:CPAK |
| 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(fēng)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(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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