- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385477 > LM2746MXAX (NATIONAL SEMICONDUCTOR CORP) Low Voltage N-Channel MOSFET Synchronous Buck Regulator Controller PDF資料下載
參數(shù)資料
| 型號： | LM2746MXAX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Low Voltage N-Channel MOSFET Synchronous Buck Regulator Controller |
| 中文描述： | SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封裝： | PLASTIC, TSSOP-14 |
| 文件頁數(shù)： | 4/24頁 |
| 文件大?。?/td> | 1087K |
| 代理商： | LM2746MXAX |
Electrical Characteristics
(Continued)
V
= 3.3V unless otherwise indicated. Limits in standard type are for T
= 25C only; limits in
boldface type
apply over the
junction temperature (T
) range of -40C to +125C. Minimum and Maximum limits are guaranteed through test, design, or sta-
tistical correlation. Typical values represent the most likely parametric norm at T
J
= 25C, and are provided for reference pur-
poses only.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
GATE DRIVE
I
Q-BOOT
R
HG_UP
BOOT Pin Quiescent Current
High-Side MOSFET Driver
Pull-Up ON resistance
High-Side MOSFET Driver
Pull-Down ON resistance
Low-Side MOSFET Driver
Pull-Up ON resistance
Low-Side MOSFET Driver
Pull-Down ON resistance
V
BOOT
= 12V, V
SD
= 0
18
90
μA
V
BOOT
= 5V
@
350mA Sourcing
3
R
HG_DN
V
BOOT
= 5V
@
350mA Sinking
2
R
LG_UP
V
BOOT
= 5V
@
350mA Sourcing
3
R
LG_DN
V
BOOT
= 5V
@
350mA Sinking
2
OSCILLATOR
f
SW
PWM Frequency
R
FADJ
= 702.1 k
R
FADJ
= 98.74 k
R
FADJ
= 45.74 k
R
FADJ
= 24.91 k
f
SW
= 300kHz
f
SW
= 600kHz
f
SW
= 1MHz
50
300
600
1000
80
76
73
kHz
475
725
D
Max High-Side Duty Cycle
%
LOGIC INPUTS AND OUTPUTS
V
SD-IH
V
SD-IL
V
PWGD-TH-LO
V
PWGD-TH-HI
V
PWGD-HYS
SD Pin Logic High Trip Point
SD Pin Logic Low Trip Point
PWGD Pin Trip Points
PWGD Pin Trip Points
PWGD Hysteresis
V
SD
Rising
V
SD
Falling
FB Falling
FB Rising
FB Falling
FB Rising
1.3
V
V
V
V
0.8
0.408
0.677
0.434
0.710
60
90
0.457
0.742
mV
Note 1:
Absolute maximum ratings indicate limits beyond which damage to the device may occur.
Operating ratings
indicate conditions for which the device
operates correctly.
Opearting Ratings
do not imply guaranteed performance limits.
Note 2:
The human body model is a 100pF capacitor discharged through a 1.5k resistor into each pin.
L
www.national.com
4
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM2753SD | High Power Switched Capacitor Voltage Convertor/Flash LED Driver |
| LM2753 | High Power Switched Capacitor Voltage Convertor/Flash LED Driver |
| LM2753SDX | High Power Switched Capacitor Voltage Convertor/Flash LED Driver |
| LM2765 | Switched Capacitor Voltage Converter |
| LM2765M6 | Switched Capacitor Voltage Converter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2746MXAX/NOPB | 功能描述:IC REG CTRLR BUCK PWM VM 14TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:100% 電源電壓:8.2 V ~ 30 V 降壓:無 升壓:無 回掃:是 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:是 工作溫度:0°C ~ 70°C 封裝/外殼:8-DIP（0.300"，7.62mm） 包裝:管件 產(chǎn)品目錄頁面:1316 (CN2011-ZH PDF) |
| LM2747 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Synchronous Buck Controller with Pre-bias Startup, and Optional Clock Synchronization |
| LM2747-19AEVAL | 功能描述:電源管理IC開發(fā)工具 LM2747 EVAL BOARD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LM2747EVAL | 功能描述:電源管理IC開發(fā)工具 LM2747EVAL EVAL BOARD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LM2747MTC | 功能描述:DC/DC 開關(guān)控制器 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復。