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參數(shù)資料
| 型號： | LM25005 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 42V, 2.5A STEP-DOWN SWITCHING REGULATOR |
| 中文描述： | 42V的2.5A降壓型開關(guān)穩(wěn)壓 |
| 文件頁數(shù)： | 5/21頁 |
| 文件大?。?/td> | 756K |
| 代理商： | LM25005 |
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
IN
to GND
BST to GND
PRE to GND
SW to GND (Steady State)
BST to V
CC
V
CC
to GND
BST to SW
45V
60V
45V
-1.5V
45V
14V
14V
OUT to GND
SD, SYNC, SS, FB to GND
ESD Rating (Note 2)
Human Body Model
Storage Temperature Range
Limited to Vin
7V
2kV
-65C to +150C
Operating Ratings
(Note 1)
V
IN
Operation Junction Temperature
7V to 42V
40C to + 125C
Electrical Characteristics
type apply over full
Operating Junction Temperature range
. V
IN
= 24V, R
T
= 32.4k
unless otherwise stated. (Note 3)
Specifications with standard typeface are for T
J
= 25C, and those with
boldface
Symbol
Parameter
Conditions
Min
Typ
Max
Units
STARTUP REGULATOR
VccReg
Vcc Regulator Output
Vcc LDO Mode turn-off
Vcc Current Limit
6.85
7.15
9
20
7.45
V
V
Vcc = 0V
mA
VCC SUPPLY
Vcc UVLO Threshold
Vcc Undervoltage Hysteresis
Bias Current (Iin)
Shutdown Current (Iin)
(Vcc increasing)
5.95
6.35
1
3
50
6.75
V
V
FB = 1.3V
SD = 0V
4.5
85
mA
μA
SHUTDOWN THRESHOLDS
Shutdown Threshold
Shutdown Hysteresis
Standby Threshold
Standby Hysteresis
SD Pull-up Current Source
(SD Increasing)
0.5
0.7
0.1
1.225
0.1
5
0.9
V
V
V
V
μA
(Standby Increasing)
1.18
1.27
SWITCH CHARACTERSICS
Buck Switch Rds(on)
BOOST UVLO
BOOST UVLO Hysteresis
Pre-charge Switch Rds(on)
Pre-charge Switch on-time
160
3.8
0.56
75
275
320
m
V
V
ns
CURRENT LIMIT
Cycle by Cycle Current Limit
Cycle by Cycle Current Limit Delay
RAMP = 0V
RAMP = 2.5V
3
3.5
100
4.25
A
ns
SOFT-START
SS Current Source
7
10
14
μA
OSCILLATOR
Frequency1
Frequency2
SYNC Source Impedance
SYNC Sink Impedance
SYNC Threshold (falling)
Upper SYNC Frequency
SYNC Pulse Width Minimum
180
425
200
485
10
160
1.4
220
525
KHz
KHz
k
V
KHz
ns
RT = 11k
550
15
L
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM25005_06 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:42V, 2.5A Step-Down Switching Regulator |
| LM25005EVAL | 功能描述:電源管理IC開發(fā)工具 LM25005 EVAL BOARD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LM25005EVAL | 制造商:Texas Instruments 功能描述:EVAL BOARD, LM25005 42V, 2.5A REGULATORU |
| LM25005MH | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT |
| LM25005MH/NOPB | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 42V,2.5A STEP-DOWN SWITCHING REG RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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