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參數(shù)資料
| 型號： | LM3311 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Step-Up PWM DC/DC Converter with Integrated LDO, Op-Amp, and Gate Pulse Modulation Switch |
| 中文描述： | 升壓的PWM直流/直流集成穩(wěn)壓器，運算放大器和開關(guān)門脈沖調(diào)制器 |
| 文件頁數(shù)： | 8/29頁 |
| 文件大?。?/td> | 2052K |
| 代理商： | LM3311 |
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Electrical Characteristics
Specifications in standard type face are for T
= 25C and those with
boldface type
apply over the full
Operating Tempera-
ture Range
( T
J
= 40C to +125C). Unless otherwise specified V
IN
= LV
IN
=2.5V.
Low Dropout Linear Regulator (LDO)
Symbol
Parameter
Conditions
Min
(Note 5)
2.5
1.197
Typ
(Note 6)
Max
(Note 5)
7
1.289
380
Units
LV
IN
V
ADJ
I
ADJ
%V
ADJ
/
V
IN
ADJ Voltage Line Regulation
Input Voltage Range
ADJ Pin Voltage
ADJ Pin Current (Note 9)
V
V
nA
LV
IN
= 3V and 7V
1.263
28
LV
IN
= 3V to 7V, LDO
OUT
=
2.8V, no load
I
OUT
= 10mA to 300mA, LV
IN
= 3.3V, LDO
OUT
= 2.8V
Device enabled
Device shut down
350mA load, LDO
OUT
= 2.8V
LV
IN
= 3.3V
-2.6
0.032
1.4
%
%V
ADJ
/
I
L
LDO
OUT
Load Regulation
-11.6
2.931
8
%
I
QL
LV
IN
Quiescent Current
290
425
10.5
674
μA
V
DO
V
ADJ(LOW)
Dropout Voltage
V
ADJ
Short Circuit Disable
Threshold
218
409
mV
0.85
0.9
V
Note 1:
Absolute maximum ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions for which the device is intended to
be functional, but device parameter specifications may not be guaranteed. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2:
Under normal operation the V
C
and CE pins may go to voltages above this value. The maximum rating is for the possibility of a voltage being applied to
the pin, however the V
C
and CE pins should never have a voltage directly applied to them.
Note 3:
The maximum allowable power dissipation is a function of the maximum junction temperature, T
J
(MAX), the junction-to-ambient thermal resistance,
θ
JA
,
and the ambient temperature, T
. See the Electrical Characteristics table for the thermal resistance of various layouts. The maximum allowable power dissipation
at any ambient temperature is calculated using: P
(MAX) = (T
J(MAX)
T
A
)/
θ
JA
. Exceeding the maximum allowable power dissipation will cause excessive die
temperature, and the regulator will go into thermal shutdown.
Note 4:
The human body model is a 100pF capacitor discharged through a 1.5k
resistor into each pin per JEDEC standard JESD22-A114.
Note 5:
All limits guaranteed at room temperature (standard typeface) and at temperature extremes (bold typeface). All room temperature limits are 100%
production tested. All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to
calculate Average Outgoing Quality Level (AOQL).
Note 6:
Typical numbers are at 25C and represent the most likely norm.
Note 7:
Duty cycle affects current limit due to ramp generator.
Note 8:
Current limit at 0% duty cycle. See TYPICAL PERFORMANCE section for Switch Current Limit vs. V
IN
Note 9:
Bias current flows into pin.
L
www.national.com
8
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相關(guān)代理商/技術(shù)參數(shù) |
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| LM3311_07 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Step-Up PWM DC/DC Converter with Integrated LDO, Op-Amp, and Gate Pulse Modulation Switch |
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| LM3311SQ-HIOP | 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(fēng)格: 封裝 / 箱體:CPAK |
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