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参数资料
| 型号： | LM3351MM/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHED CAPACITOR CONVERTER, 275 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | MINI, SO-8 |
| 文件页数： | 5/10页 |
| 文件大小： | 298K |
| 代理商： | LM3351MM/NOPB |
Electrical Characteristics
2/3 Step-Down Voltage Converter (Continued)
Specifications in standard type face are for T
j = 25C, and those with boldface type apply over full operating temperature
range. Unless otherwise specified, V
high = 5V, VEnable = 5V, Iload = 50 mA, C1,C2,Cin and Cout = 1 F.
Symbol
Parameter
Conditions
Typ (Note 4)
Limits (Note 5)
Units
V
in
Input Supply Voltage
Range
5V
2.2
V(Min)
5.5
V(Max)
I
Q1
Quiescent Current
Shutdown Mode, V
Enable = 0V, Iload=0
A; Current into pin V
high
0.25
A
3
A(Max)
I
Q2
Quiescent Current
Normal Mode, I
Ioad = 0A; Current into
pin V
high
0.8
mA
1.0
mA(Max)
Z
out
Output Source
Impedance
I
load =50mA
1.8
3
(Max)
f
SW
Switching Frequency
200
kHz
125
kHz(Min)
275
kHz(Max)
V
Enable
Enable Threshold
Voltage
1.7
V
1.0
V(Min)
2.5
V(Max)
I
Enable
Leakage Current
Current into ENABLE pin; ENABLE =
5V and all other pins at ground
0.025
A
1
A(Max)
Pη
Power Efficiency
95
%
Note 1: Absolute maximum ratings indicate limits beyond which damage to the device may occur. Operating ratings indicate conditions for which the device is
intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see Electrical Characteristics. The
guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed
test conditions.
Note 2: For operation at elevated temperatures, LM3351 must be derated based on package thermal resistance of
θja and Tj max, Tj =TA+ θjaPD.
Note 3: The human body model is a 100 pF capacitor discharged through a 1.5 kW resistor into each pin.
Note 4: Typical numbers are at 25C and represent the most likely parametric norm.
Note 5: Limits are 100% production tested at 25C. Limits over the operating temperature range are guaranteed through correlation using Statistical Quality Control
(SQC) methods. The limits are used to calculate National’s Averaging Outgoing Quality Level (AOQL).
Note 6: The internal oscillator runs at 1.6 MHz, the output switches operate at one eighth of the oscillator frequency, fOSC =8fSW.
LM3351
www.national.com
4
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM3351MMX | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Switched Capacitor Voltage Converter |
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| LM3352-3.0EVAL | 功能描述:EVALUATION BOARD FOR LM3352-3.0 RoHS:是 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:True Shutdown™ 主要目的:DC/DC，步升 输出及类型:1，非隔离 功率 - 输出:- 输出电压:- 电流 - 输出:1A 输入电压:2.5 V ~ 5.5 V 稳压器拓扑结构:升压 频率 - 开关:3MHz 板类型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
| LM3352-3.3EVAL | 功能描述:EVALUATION BOARD FOR LM3352-3.3 RoHS:是 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:True Shutdown™ 主要目的:DC/DC，步升 输出及类型:1，非隔离 功率 - 输出:- 输出电压:- 电流 - 输出:1A 输入电压:2.5 V ~ 5.5 V 稳压器拓扑结构:升压 频率 - 开关:3MHz 板类型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
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