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参数资料
| 型号： | 4TPB220ML |
| 厂商： | National Semiconductor Corporation |
| 英文描述： | N-Channel FET Synchronous Buck Regulator Controller for Low Output Voltages |
| 中文描述： | N沟道场效应管同步降压稳压控制器输出电压低 |
| 文件页数： | 17/22页 |
| 文件大小： | 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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相关代理商/技术参数 |
参数描述 |
|---|---|
| 4TPB220ML | 制造商:SANYO Semiconductor Co Ltd 功能描述:CAPACITOR 220UF 4V |
| 4TPB330ML | 功能描述:钽质电容器-SMD聚合物 4volts 330uF ESR 40mohm RoHS:否 制造商:Kemet 电容:33 uF 电压额定值:50 V ESR:40 mOhms 容差:20 % 工作温度范围: 外壳代码 - in:2917 外壳代码 - mm:7343 高度:4 mm 制造商库存号:X Case 系列:T543 产品: 封装: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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