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參數(shù)資料
| 型號： | 4TPB220ML |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | N-Channel FET Synchronous Buck Regulator Controller for Low Output Voltages |
| 中文描述： | N溝道場效應管同步降壓穩(wěn)壓控制器輸出電壓低 |
| 文件頁數(shù)： | 17/22頁 |
| 文件大?。?/td> | 602K |
| 代理商： | 4TPB220ML |
Electrical Characteristics (Continued)
V
CC = 5V unless otherwise indicated. Typicals and limits appearing in plain type apply for TA=TJ=+25C. Limits appearing in
boldface type apply over full Operating Temperature Range. Datasheet min/max specification limits are guaranteed by design,
test, or statistical analysis.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
GATE DRIVE
I
Q-BOOT
BOOT Pin Quiescent Current
BOOTV = 12V, EN = 0
0C to +125C
-40C to +125C
95
160
215
A
R
DS1
Top FET Driver Pull-Up ON
resistance
BOOT-SW = 5V@350mA
3
R
DS2
Top FET Driver Pull-Down ON
resistance
BOOT-SW = 5V@350mA
2
R
DS3
Bottom FET Driver Pull-Up ON
resistance
BOOT-SW = 5V@350mA
3
R
DS4
Bottom FET Driver Pull-Down
ON resistance
BOOT-SW = 5V@350mA
2
OSCILLATOR
f
OSC
PWM Frequency
R
FADJ = 590k
50
kHz
R
FADJ = 88.7k
300
R
FADJ = 42.2k
, 0C to +125C
500
600
700
R
FADJ = 42.2k
, -40C to +125C
490
600
700
R
FADJ = 17.4k
1400
R
FADJ = 11.3k
2000
D
Max Duty Cycle
f
PWM = 300kHz
f
PWM = 600kHz
90
88
%
LOGIC INPUTS AND OUTPUTS
V
SD-IH
SD Pin Logic High Trip Point
2.6
3.5
V
SD-IL
SD Pin Logic Low Trip Point
0C to +125C
-40C to +125C
1.3
1.25
1.6
V
PWGD-TH-LO
PWGD Pin Trip Points
FB Voltage Going Down
0C to +125C
-40C to +125C
0.413
0.410
0.430
0.446
V
PWGD-TH-HI
PWGD Pin Trip Points
FB Voltage Going Up
0C to +125C
-40C to +125C
0.691
0.688
0.710
0.734
V
PWGD-HYS
PWGD Hysteresis (LM2737 only) FB Voltage Going Down FB Voltage
Going Up
35
110
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.
LM2727/LM2737
www.national.com
4
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 4TPB220ML | 制造商:SANYO Semiconductor Co Ltd 功能描述:CAPACITOR 220UF 4V |
| 4TPB330ML | 功能描述:鉭質電容器-SMD聚合物 4volts 330uF ESR 40mohm RoHS:否 制造商:Kemet 電容:33 uF 電壓額定值:50 V ESR:40 mOhms 容差:20 % 工作溫度范圍: 外殼代碼 - in:2917 外殼代碼 - mm:7343 高度:4 mm 制造商庫存號:X Case 系列:T543 產品: 封裝:Reel |
| 4TPB330ML | 制造商:SANYO Semiconductor Co Ltd 功能描述:CAPACITOR 330UF 4V |
| 4TPB470M | 制造商:SANYO 功能描述:CAPACITOR, 470UF, 4V 制造商:SANYO 功能描述:CAPACITOR, 470UF, 4V Bulk 制造商:SANYO Semiconductor Co Ltd 功能描述:CAPACITOR 470UF 4V 制造商:SANYO Semiconductor Co Ltd 功能描述:CAPACITOR, 470UF, 4V |
| 4TPB470M | 制造商:SANYO Semiconductor Co Ltd 功能描述:CAPACITOR 470UF 4V |
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