參數(shù)資料
型號： LM5041BSDX
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, 685 kHz SWITCHING FREQ-MAX, DSO16
封裝： 5 X 5 MM, LLP-16
文件頁數(shù)： 12/16頁
文件大?。?/td> 426K
代理商： LM5041BSDX
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Oscillator
Frequency1
RT = 26.7 k
180
175
200
220
225
kHz
Frequency2
RT = 7.87 k
515
600
685
kHz
Sync threshold
-
3
3.5
V
PWM Comparator
Delay to Output
COMP = 2V, CS stepped 0 to 0.4V
Time to onset of OUT transition low
-
25
-
ns
Max Duty Cycle
TS = Oscillator Period
-
(Ts-240ns)
/ Ts
-
%
Min Duty Cycle
COMP = 0V
-
0
%
COMP to PWM Comparator Gain
-
0.32
-
COMP Open Circuit Voltage
FB = 0V
4.1
4.8
5.5
V
COMP Short Circuit Current
FB = 0V, COMP = 0V
0.6
1
1.4
mA
Slope Compensation
Slope Comp Amplitude
Delta increase at PWM Comparator
to CS
-
110
-
mV
UVLO Shutdown
Under-Voltage Shutdown
2.44
2.5
2.56
V
Under-voltage Shutdown
Hysteresis Current Source
16
20
24
A
Buck Stage Outputs
Output High level
-
5 (V
REF)
-
V
Output High Saturation
I
OUT = 10 mA, REF = VOUT
-
0.5
1
V
Output Low Saturation
I
OUT = 10 mA
-
0.5
1
V
Rise Time
C
L = 100 pF
-
10
-
ns
Fall Time
C
L = 100 pF
-
10
-
ns
Push-Pull Outputs
Overlap Time
R
SET = 20 k Connected to GND,
50% to 50% Transitions
60
90
120
ns
Dead Time
R
SET = 20k Connected to REF,
50% to 50% Transitions
65
95
125
ns
Output High Saturation
I
OUT = 50 mA
V
CC - VOUT
-
0.25
0.5
V
Output Low Saturation
I
OUT = 100 mA
-
0.5
1
V
Rise Time
C
L = 1 nF
-
20
ns
Fall Time
C
L = 1 nF
-
20
-
ns
Thermal Shutdown
T
SD
Thermal Shutdown Temp.
-
165
-
°C
Thermal Shutdown Hysteresis
-
25
-
°C
Thermal Resistance
θ
JA
Thermal Resistance
Junction to Ambient
TSSOP Package
-
125
-
°C/W
LLP Package
-
32
-
°C/W
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 does not guarantee specific performance limits. For guaranteed specifications and conditions, see the Electrical Characteristics.
Note 2:
The human body model is a 100 pF capacitor discharged through a 1.5 k
resistor into each pin. Test Method is per JESD-22-A114.
Note 3:
For detailed information on soldering plastic TSSOP and LLP packages, please refer to Application Note AN-1520: A Guide to Board Layout for Best
Thermal Resistance for Exposed Packages , Application Note AN-1187: Leadless Leadframe Package (LLP) , or go to www.national.com/packaging for more
information.
Note 4:
Device thermal limitations may limit usable range.
5
www.national.com
LM5041B
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相關代理商/技術參數(shù)
參數(shù)描述
LM5041EVAL 功能描述:BOARD EVALUATION LM5041 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - DC/DC 與 AC/DC（離線）SMPS 系列:PowerWise® 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:True Shutdown™ 主要目的:DC/DC，步升 輸出及類型:1，非隔離 功率 - 輸出:- 輸出電壓:- 電流 - 輸出:1A 輸入電壓:2.5 V ~ 5.5 V 穩(wěn)壓器拓撲結構:升壓 頻率 - 開關:3MHz 板類型:完全填充 已供物品:板 已用 IC / 零件:MAX8969
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LM5041MTC 功能描述:電流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14
LM5041MTC 制造商:Texas Instruments 功能描述:PWM CONTROLLER POWERWISE TSSOP16
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