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參數資料
| 型號： | PM6685 |
| 廠商： | 意法半導體 |
| 英文描述： | DUAL STEP-DOWN CONTROLLER WITH AUXILARY VOLTAGES FOR NOTEBOOK SYSTEM POWER |
| 中文描述： | 雙通道降壓控制器，紡織印染助劑用于筆記本系統的電源電壓 |
| 文件頁數： | 6/16頁 |
| 文件大小： | 889K |
| 代理商： | PM6685 |
3 Block & pin connection diagrams
PM6685
6/16
Table 3.
Pin description
Pin No
PM6685
Function
1
SGND
Signal ground. Reference for internal logic circuitry.
2
COMP3
DC voltage error compensation pin for the 3.3V switching section.
3
FSEL
Frequency selection pin. It provides a selectable switching frequency, allowing
either 200kHz/300kHz, 300kHz/400kHz or 400kHz/500kz operation of the 5V/
3.3V switching sections.
4
EN3
3.3V SMPS enable input. The 3.3V section is enabled appling a high logic level
(>2.4V) to this pin, while is disabled appling a low logic level (<0.8V). When the
section is disabled the High Side gate driver goes low and Low Side gate driver
goes high. If both EN3 and EN5 pins are low and SHDN pin is high the device
enters in standby mode.
5
SHDN
Shutdown control input. The device enters its shutdown mode with 9μA of supply
current if VSHDN is less than the device off threshold voltage and doesn't restart
until VSHDN is greater than the device on threshold voltage. The SHDN pin can
be connected to Vbatt through a voltage divider to program an undervoltage
lockout. In shutdown mode, the gate drivers of the two switching sections are in
high impedance.
6
PGOOD LDO3
Power Good ouput signal for the 3.3V linear regulator. This pin is an open drain
output. It is shorted to GND if LDO3_SEL pin is at its low level or if the ouput
voltage on LDO3 pin is lower than 2.6V.
7
LDO3
3.3V Linear regulator output. LDO3 can provide 100mA peak current. If
LDO3_SEL pin is connected to VREF and OUT3 is greater than the LDO3
bootstrap switch threshold, the LDO3 regulator shuts down and the LDO3 pin will
be directly connected to OUT3 through a 3 (max) switch.
If LDO3_SEL pin is at its low level the LDO3 is always OFF.
If LDO3_SEL pin is at its high level the LDO3 is always ON.
8
OUT3
Output voltage sense for the 3.3V switching section.This pin must be directly
connected to the output voltage of the switching section.
9
BOOT3
Bootstrap capacitor connection for the switching 3.3V section. It supplies the high-
side gate driver.
10
HGATE3
High-side gate driver ouput for the 3.3V section.
11
PHASE3
Switch node connection and return path for the high side driver for the 3.3V
section.
12
CSENSE3
Current sense input for the switching 3.3V section. This pin must be connected
through a resistor to the drain of the synchronous rectifier (RDSON sensing) or to
the source of the synchronous rectifier (RSENSE sensing) to set the current limit
threshold.
13
LGATE3
Low-side gate driver output for the 3.3V section.
14
PGND
Power ground.
15
LGATE5
Low-side gate driver output for the 5V section.
16
SGND2
Signal ground for analog circuitry.
17
V5SW
Internal 5V regulator bypass connection. When the main 5V ouput voltage is
greater than the boostrap switch threshold, the LDO5 regulator shuts down and
the LDO5 pin will be directly connected to OUT5 through a 3 (max) switch.
If not used, it must be tied to ground.
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相關代理商/技術參數 |
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|---|---|
| PM6685_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Dual step-down main supply controller with auxilary voltages for notebook system power |
| PM6685TR | 功能描述:DC/DC 開關控制器 Monolithic VR RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| PM6686 | 制造商:STMicroelectronics 功能描述: |
| PM6686TR | 功能描述:DC/DC 開關控制器 Step-down Controller w/adj. voltages-dual RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| PM6-6F-L | 功能描述:端子 Metric Fork Terminal non-insulated, 4.0 RoHS:否 制造商:AVX 產品:Junction Box - Wire to Wire 系列:9826 線規:26-18 接線柱/接頭大小: 絕緣: 顏色:Red 型式:Female 觸點電鍍:Tin over Nickel 觸點材料:Beryllium Copper, Phosphor Bronze 端接類型:Crimp |
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