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參數(shù)資料
| 型號： | LM2825-5.0 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | DC/DC變換器 |
| 英文描述： | Integrated Power Supply 1A DC-DC Converter(633.82 k) |
| 中文描述： | 第1A電源集成的DC - DC轉(zhuǎn)換器（633.82十一） |
| 文件頁數(shù)： | 4/12頁 |
| 文件大小： | 633K |
| 代理商： | LM2825-5.0 |
All Output Voltage Versions Electrical Characteristics
Specifications with standard type face are for T
A
= 25C, and those with
boldface type
apply over
full Operating Range.
Un-
less otherwise specified, V
IN
= 12V for 3.3V, 5.0V and ADJ versions, V
IN
= 24V for 12V and H-ADJ versions, I
LOAD
= 100 mA.
Symbol
Parameter
Conditions
LM2825-XX
Units
(Limits)
Typical
(Note 6)
1.4
Limit
(Note 7)
I
CL
DC Output Current
Limit
R
L
= 0
A
1.2
2.4
A(min)
A(max)
mA
I
Q
Operating Quiescent
Current
SD/SS Pin = 3.1V
5
(Note 8)
SD/SS Pin = 0V
10
mA(max)
μA
I
STBY
Standby Quiescent
Current
65
(Note 8)
Adjustable Versions Only, V
FB
= 1.3V
200
μA(max)
nA
nA(max)
kHz
C/W
I
ADJ
Adjust Pin Bias Current
6
50/
100
f
O
θ
JA
SHUTDOWN/SOFT-START CONTROL
Test Circuit Figure 2
V
SD
Shutdown Threshold
Voltage
Oscillator Frequency
Thermal Resistance
(Note 9)
Junction to Ambient (Note 10)
150
30
1.3
V
Low (Shutdown Mode)
High (Soft-start Mode)
V
OUT
= 20% of Nominal Output Voltage
V
OUT
= 100% of Nominal Output Voltage
V
SHUTDOWN
= 0.5V
(Note 8)
V
SOFT-START
= 2.5V
(Note 8)
0.6
2.0
V(max)
V(min)
V
V
SS
Soft-start Voltage
2
3
5
I
SD
Shutdown Current
μA
10
μA(max)
μA
μA(max)
I
SS
Soft-start Current
1.6
5
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is in-
tended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2:
Voltage internally clamped. If clamp voltage is exceeded, limit current to a maximum of 5 mA.
Note 3:
The human body model is a 100 pF capacitor discharged through a 1.5k resistor into each pin.
Note 4:
When the LM2825 is used as shown in Figure 2 test circuit, system performance will be as shown in Electrical Characteristics.
Note 5:
When the LM2825 is used as shown in Figure 3 test circuit, system performance will be as shown in Electrical Characteristics.
Note 6:
Typical numbers are at 25C and represent the most likely norm.
Note 7:
All limits guaranteed at room temperature (standard type face) and at temperature extremes (bold type face) when output current is limited to the value given
in the temperature derating curves. See the application section for curves.All limits at temperature extremes are guaranteed using standard Statistical Quality Control
(SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).
Note 8:
I
LOAD
= 0A.
Note 9:
The switching frequency is reduced when the second stage current limit is activated. The amount of reduction is determined by the severity of current over-
load.
Note 10:
Junction to ambient thermal resistance (no external heat sink) for the DIP-24 package with the leads soldered to a printed circuit board with (1 oz.) copper
area of approximately 2 in
.
www.national.com
4
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM2825-ADJ | Integrated Power Supply 1A DC-DC Converter(633.82 k) |
| LM2825H-ADJ | Integrated Power Supply 1A DC-DC Converter(633.82 k) |
| LM2825 | Integrated Power Supply 1A DC-DC Converter |
| LM285-1.2(中文) | Micropower Voltage References(1.2V基準(zhǔn)電壓源) |
| LM285-1.2D | MICROPOWER VOLTAGE REFERENCES |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2825-ADJ | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Integrated Power Supply 1A DC-DC Converter(633.82 k) |
| LM2825H-ADJ | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Integrated Power Supply 1A DC-DC Converter(633.82 k) |
| LM2825HN-ADJ | 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 |
| LM2825HN-ADJ/NOPB | 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 |
| LM2825N-12 | 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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