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參數(shù)資料
| 型號(hào)： | LM2853 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 3A 550 kHz Synchronous SIMPLE SWITCHER Buck Regulator |
| 中文描述： | 第3A 550千赫同步的SIMPLE SWITCHER降壓穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 3/12頁(yè) |
| 文件大小： | 620K |
| 代理商： | LM2853 |
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
AVIN, PVIN, EN, SNS, SW, SS
ESD Susceptibility (Note 2)
Power Dissipation
Storage Temperature Range
Maximum Junction Temp.
0.3V to 6.0V
2kV
Internally Limited
65C to +150C
150C
14-Pin Exposed Pad TSSOP Package
Infrared (15 sec)
Vapor Phase (60 sec)
Soldering (10 sec)
220C
215C
260C
Operating Ratings
(Note 1)
PVIN to GND
AVIN to GND
Junction Temperature
1.5V to 5.5V
3.0V to 5.5V
40C to +125C
Electrical Characteristics
type apply over the full Junction Temperature Range (40C to 125C). Minimum and Maximum limits are guaranteed through
test, design or statistical correlation. Typical values represent the most likely parametric norm at T
J
= 25C and are provided
for reference purposes only. Unless otherwise specified AVIN = PVIN = 5V.
Specifications with standard typeface are for T
J
= 25C, and those in bold face
Symbol
SYSTEM PARAMETERS
V
OUT
Parameter
Conditions
Min
Typ
Max
Units
Voltage Tolerance (Note 3)
V
OUT
= 0.8V option
V
OUT
= 1.0V option
V
OUT
= 1.2V option
V
OUT
= 1.5V option
V
OUT
= 1.8V option
V
OUT
= 2.5V option
V
OUT
= 3.0V option
V
OUT
= 3.3V option
V
OUT
= 0.8V, 1.0V, 1.2V, 1.5V,
1.8V or 2.5V
3.0V
≤
AVIN
≤
5.5V
V
OUT
= 3.0V or 3.3V
3.5V
≤
AVIN
≤
5.5V
Normal operation
Rising
Falling Hysteresis
Isw = 3A
Isw = 3A
0.782
0.9775
1.1730
1.4663
1.7595
2.4437
2.9325
3.2257
0.8
1.0
1.2
1.5
1.8
2.5
3.0
3.3
0.2
0.818
1.0225
1.227
1.5337
1.8405
2.5563
3.0675
3.3743
1.1
V
V
OUT
/
AVIN
Line Regulation (Note 3)
%
0.2
1.1
%
V
OUT
/
I
O
V
ON
Load Regulation
UVLO Threshold (AVIN)
2
mV/A
V
mV
m
m
k
A
mA
μA
k
2.47
155
40
32
450
5
0.85
12
432
3.0
260
120
100
50
R
DS(ON)-P
R
DS(ON)-N
R
SS
I
CL
I
Q
I
SD
R
SNS
PWM
f
osc
D
range
ENABLE CONTROL
(Note 4)
V
IH
PFET On Resistance
NFET On Resistance
Soft-Start Resistance
Peak Current Limit Threshold
Operating Current
Shutdown Quiescent Current
Sense Pin Resistance
3.6
Non-switching
EN = 0V
2
50
Switching Frequency
Duty Cycle Range
.
325
0
550
725
100
kHz
%
EN Pin Minimum High Input
75
% of
AVIN
% of
AVIN
μA
V
IL
EN Pin Maximum Low Input
25
I
EN
EN Pin Pullup Current
EN = 0V
1.5
L
www.national.com
3
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|---|---|
| LM2853-1.2EVAL | 功能描述:電源管理IC開發(fā)工具 LM2853 EVAL BOARD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LM2853-1.2EVAL | 制造商:Texas Instruments 功能描述:EVAL BOARD, LM2853 1.2V, 3A SYNC STEP-DO |
| LM2853-1.8EVAL | 功能描述:BOARD EVAL LM2853-1.8 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - DC/DC 與 AC/DC（離線）SMPS 系列:PowerWise®, SIMPLE SWITCHER® 標(biāo)準(zhǔn)包裝:1 系列:- 主要目的:DC/DC，步降 輸出及類型:1，非隔離 功率 - 輸出:- 輸出電壓:3.3V 電流 - 輸出:3A 輸入電壓:4.5 V ~ 28 V 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):降壓 頻率 - 開關(guān):250kHz 板類型:完全填充 已供物品:板 已用 IC / 零件:L7981 其它名稱:497-12113STEVAL-ISA094V1-ND |
| LM2853-1.8EVAL/NOPB | 功能描述:電源管理IC開發(fā)工具 LM2853 EVAL BOARD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LM2853-3.3EVAL | 功能描述:電源管理IC開發(fā)工具 LM2853 EVAL BOARD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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