參數(shù)資料
型號： PM6685TR
廠商： STMICROELECTRONICS
元件分類： 穩(wěn)壓器
英文描述： DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, QCC32
封裝： 5 X 5 MM, 1 MM HEIGHT, 0.50 MM PITCH, LEAD FREE, VFQFPN-32
文件頁數(shù)： 49/52頁
文件大小： 2536K
代理商： PM6685TR
Pin settings
PM6685
6/52
2.2
Functions
Table 2.
Pin functions
Pin
Name
Description
1
SGND1
Signal ground. Reference for internal logic circuitry. It must be connected to the
signal ground plan of the power supply. The signal ground plan and the power
ground plan must be connected together in one point near the PGND pin.
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 , allowing three different
values of switching frequencies for the 5V/3.3V switching sections.
4EN3
3.3V SMPS enable input.
– The 3.3V section is enabled applying a voltage greater than 2.4V to this pin.
– The 3.3V section is disabled applying a voltage lower than 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 switch off if the SHDN voltage is lower than 0.8V (Shutdown
mode)
– The device switch on if the SHDN voltage is greater than 1.7V.
The SHDN pin can be connected to the battery through a voltage divider to
program an undervoltage lockout. In shutdown mode, the gate drivers of the two
switching sections are in high impedance (high-Z).
6
PGOOD
LDO3
Power Good 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 output voltage
on LDO3 pin is lower than 2.6V.
7
LDO3
3.3V Linear regulator output. LDO3 can provide 100mA peak current.
8OUT3
Output voltage sense for the 3.3V switching section.This pin must be directly
connected to the output voltage of the switching section.
9BOOT3
Bootstrap capacitor connection for the switching 3.3V section. It supplies the
high-side gate driver.
10
HGATE3
High-side gate driver output 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 3.3V section. This pin must be connected through a
resistor to the drain of the synchronous rectifier (RDSON sensing) to set the
current limit threshold.
13
LGATE3
Low-side gate driver output for the 3.3V section.
14
PGND
Power ground. This pin must be connected to the power ground plan of the
power supply.
15
LGATE5
Low-side gate driver output for the 5V section.
16
SGND2
Signal ground for analog circuitry. It must be connected to the signal ground
plan of the power supply.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PM6686 制造商:STMicroelectronics 功能描述:
PM6686TR 功能描述:DC/DC 開關(guān)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(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
PM6-6F-L 功能描述:端子 Metric Fork Terminal non-insulated, 4.0 RoHS:否 制造商:AVX 產(chǎn)品:Junction Box - Wire to Wire 系列:9826 線規(guī):26-18 接線柱/接頭大小: 絕緣: 顏色:Red 型式:Female 觸點(diǎn)電鍍:Tin over Nickel 觸點(diǎn)材料:Beryllium Copper, Phosphor Bronze 端接類型:Crimp
PM6-6R-D 制造商:Panduit Corp 功能描述:
PM6-6R-L 功能描述:端子 Metric Ring Terminal non-insulated, 2.5 RoHS:否 制造商:AVX 產(chǎn)品:Junction Box - Wire to Wire 系列:9826 線規(guī):26-18 接線柱/接頭大小: 絕緣: 顏色:Red 型式:Female 觸點(diǎn)電鍍:Tin over Nickel 觸點(diǎn)材料:Beryllium Copper, Phosphor Bronze 端接類型:Crimp
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