- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383238 > L6731B (意法半導(dǎo)體) Transistor; Type: Amplifiers/Bipolar; VCEO (V): 25; Ic (A): 1; Pc (W): 0.8; hFE: 85 to 330; VCE (sat) (V) max: 0.5; Package: TO-92Mod PDF資料下載
參數(shù)資料
| 型號(hào)： | L6731B |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Transistor; Type: Amplifiers/Bipolar; VCEO (V): 25; Ic (A): 1; Pc (W): 0.8; hFE: 85 to 330; VCE (sat) (V) max: 0.5; Package: TO-92Mod |
| 中文描述： | 可調(diào)式降壓同步整流專用的DDR控制器內(nèi)存 |
| 文件頁數(shù)： | 11/24頁 |
| 文件大小： | 311K |
| 代理商： | L6731B |
L6731B
Device description
11/24
5.3
Bypassing the LDO to avoid the voltage drop with low Vcc
If V
CC
≈
5V the internal LDO works in dropout with an output resistance of about 1
. The
maximum LDO output current is about 100mA and so the output voltage drop is 100mV, to
avoid this the LDO can be bypassed.
5.4
Internal and external references
It is possible to set the internal/external reference and the switching frequency by setting the
proper voltage at the DDR-IN pin. The maximum value of the external reference is 2.5V (typ.):
V
EAREF
from 0% to 80% of V
CCDR
-> External reference/F
SW
= 250KHz
V
EAREF
from 80% to 95% of V
CCDR
-> V
REF
= 0.6V/F
SW
=500KHz
V
EAREF
from 95% to 100% of V
CCDR
-> V
REF
= 0.6V/F
SW
=250KHz
●
●
●
Providing an external reference from 0V to 450mV the output voltage will be regulated but
some restrictions must be considered:
The minimum OVP threshold is set at 300mV;
The under-voltage-protection doesn't work;
The PGOOD signal remains low;
●
●
●
To set the resistor divider it must be considered that a 100K pull-down resistor is integrated into
the device (see
Figure 5.
). Finally it must be taken into account that the voltage at the
DDR-IN
pin is captured by the device at the start-up when V
CC
is about 4V.
Figure 4.
Bypassing the LDO
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L6731BTR | Transistor; Type: Amplifiers/Bipolar; VCEO (V): -25; Ic (A): -1; Pc (W): 0.8; hFE: 85 to 330; VCE (sat) (V) max: -0.5; Package: TO-92Mod |
| L6732 | Adjustable step-down controller with synchronous rectification |
| L6732TR | Adjustable step-down controller with synchronous rectification |
| L6902D013TR | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| L6902D | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6731BTR | 功能描述:IC CTRLR ADJ STEP DOWN 16-TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,000 系列:- 應(yīng)用:電源，ICERA E400，E450 輸入電壓:4.1 V ~ 5.5 V 輸出數(shù):10 輸出電壓:可編程 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:42-WFBGA，WLCSP 供應(yīng)商設(shè)備封裝:42-WLP 包裝:帶卷 (TR) |
| L6731D | 功能描述:DC/DC 開關(guān)控制器 Adjustable Step Down Controller 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 |
| L6731DTR | 功能描述:DC/DC 開關(guān)控制器 Adjustable Step Down Controller 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 |
| L6732 | 功能描述:DC/DC 開關(guān)控制器 Adjustable Step Down Controller 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 |
| L6732_08 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Adjustable step-down controller with synchronous rectification |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。