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參數(shù)資料
| 型號： | LM34910SD |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 1.5 A SWITCHING REGULATOR, DSO10 |
| 封裝： | 4 X 4 MM, LLP-10 |
| 文件頁數(shù)： | 4/11頁 |
| 文件大?。?/td> | 583K |
| 代理商： | LM34910SD |
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
SW to GND (Steady State)
ESD Rating (Note 2)
Human Body Model
BST to V
CC
V
IN
to SW
BST to SW
40V
50V
-1.5V
2kV
40V
40V
14V
V
CC
to GND
S
GND
to RTN
Current out of I
SEN
SS to RTN
All Other Inputs to GND
Storage Temperature Range
JunctionTemperature
14V
-0.3V to +0.3V
See Text
-0.3V to 4V
-0.3 to 7V
-55C to +150C
150C
Operating Ratings
(Note 1)
V
IN
Junction Temperature
8.0V to 36V
40C to + 125C
Electrical Characteristics
type apply over full
Operating Junction Temperature range
. V
IN
= 24V, R
ON
= 200k unless otherwise stated (Note 5).
Specifications with standard typeface are for T
J
= 25C, and those with
boldface
Symbol
Start-Up Regulator, V
CC
V
CC
Reg
Parameter
Conditions
Min
Typ
Max
Units
V
CC
regulated output
V
IN
-V
CC
dropout voltage
6.6
7
7.4
V
V
I
CC
= 0 mA,
V
CC
= V
CC
Reg - 100 mV
0 mA
≤
I
CC
≤
5 mA
V
CC
= 0V
V
CC
increasing
1.4
V
CC
output impedance
V
CC
current limit (Note 3)
V
CC
under-voltage lockout
threshold
UVLO
VCC
hysteresis
UVLO
VCC
filter delay
I
IN
operating current
I
IN
shutdown current
140
9
5.8
mA
V
UVLO
VCC
V
CC
decreasing
100 mV overdrive
Non-switching, FB = 3V
R
ON
/SD = 0V
150
3
0.63
80
mV
μs
mA
μA
1
250
Switch Characteristics
Rds(on)
UVLO
GD
Buck Switch Rds(on)
Gate Drive UVLO
UVLO
GD
hysteresis
I
TEST
= 200 mA
V
BST
- V
SW
Increasing
0.45
4.3
440
0.95
5.5
V
mV
3.0
Softstart Pin
Pull-up voltage
Internal current source
2.5
11.5
V
μA
Current Limit
I
LIM
Threshold
Resistance from I
SEN
to S
GND
Response time
Current out of I
SEN
1
1.25
130
150
1.5
A
m
ns
On Timer
t
ON
- 1
t
ON
- 2
On-time
On-time
Shutdown threshold
Threshold hysteresis
V
IN
= 10V, R
ON
= 200 k
V
IN
= 36V, R
ON
= 200 k
Voltage at R
ON
/SD rising
Voltage at R
ON
/SD falling
2.1
2.75
740
0.65
40
3.6
μs
ns
V
mV
0.35
1.1
Off Timer
t
OFF
Minimum Off-time
280
ns
Regulation and Over-Voltage Comparators (FB Pin)
V
REF
FB regulation threshold
FB over-voltage threshold
FB bias current
SS pin = steady state
2.440
2.5
2.875
100
2.550
V
V
nA
L
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM34910SD/NOPB | 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(fēng)格:SMD/SMT |
| LM34910SDX | 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(fēng)格:SMD/SMT |
| LM34910SDX/NOPB | 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(fēng)格:SMD/SMT |
| LM34914 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Ultra Small 1.25A Step-Down Switching Regulator with Intelligent Current Limit |
| LM34914EVAL | 功能描述:電源管理IC開發(fā)工具 LM34914 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 |
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