參數(shù)資料
型號(hào)： LM2717MT
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 穩(wěn)壓器
英文描述： Dual Step-down DC/DC Converter
中文描述： 3.2 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO24
封裝： TSSOP-24
文件頁(yè)數(shù)： 5/12頁(yè)
文件大小： 673K
代理商： LM2717MT
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
SW1 Voltage
SW2 Voltage
FB1 Voltage
FB2 Voltage
V
C1
Voltage
V
C2
Voltage
SHDN1 Voltage
SHDN2 Voltage
SS1 Voltage
SS2 Voltage
FSLCT Voltage
Maximum Junction Temperature
0.3V to 22V
0.3V to 22V
0.3V to 22V
0.3V to 7V
0.3V to 7V
1.75V
≤
V
C1
≤
2.25V
0.965V
≤
V
C2
≤
1.565V
0.3V to 7.5V
0.3V to 7.5V
0.3V to 2.1V
0.3V to 2.1V
AGND to 5V
150C
Power Dissipation(Note 2)
Lead Temperature
Vapor Phase (60 sec.)
Infrared (15 sec.)
ESD Susceptibility (Note 3)
Human Body Model
Internally Limited
300C
215C
220C
2kV
Operating Conditions
Operating Junction
Temperature Range
(Note 4)
Storage Temperature
Supply Voltage
SW1 Voltage
SW2 Voltage
40C to +125C
65C to +150C
4V to 20V
20V
20V
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). V
IN
= 5V, I
L
= 0A, and F
SW
= 300kHz unless otherwise specified.
Symbol
Parameter
Conditions
Min
(Note 4)
Typ
(Note 5)
2.7
6
9
Max
(Note 4)
6
12
27
Units
I
Q
Total Quiescent Current (both
switchers)
Not Switching
Switching, switch open
V
SHDN
= 0V
mA
mA
μA
V
FB1
Fixed Buck Feedback
Voltage
Adjustable Buck Feedback
Voltage
3.3
V
V
FB2
1.267
V
I
CL1
(Note 6) Fixed Buck Switch Current
Limit
I
CL2
(Note 6) Adjustable Buck Switch
Current Limit
I
B1
Fixed Buck FB Pin Bias
Current
(Note 8)
I
B2
Adjustable Buck FB Pin Bias
Current
(Note 8)
V
IN
Input Voltage Range
g
m1
Fixed Buck Error Amp
Transconductance
g
m2
Adjustable Buck Error Amp
Transconductance
A
V1
Fixed Buck Error Amp
Voltage Gain
A
V2
Adjustable Buck Error Amp
Voltage Gain
D
MAX
Maximum Duty Cycle
F
SW
Switching Frequency
V
IN
= 8V (Note 7)
2.2
A
V
IN
= 8V (Note 7)
3.2
A
V
IN
= 20V
65
μA
V
IN
= 20V
65
nA
4
20
V
I = 20μA
1340
μmho
I = 20μA
1360
μmho
134
V/V
136
V/V
89
200
475
93
300
600
%
kHz
kHz
R
F
= 46.4k
R
F
= 22.6k
400
775
L
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM2717MT/NOPB 功能描述:DC/DC 開(kāi)關(guān)控制器 DUAL STEP-DOWN DC/DC CONVERTER RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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
LM2717MT/NOPB 制造商:Texas Instruments 功能描述:DC/DC Converter IC
LM2717MT-ADJ 功能描述:DC/DC 開(kāi)關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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
LM2717MT-ADJ/NOPB 功能描述:DC/DC 開(kāi)關(guān)控制器 DUAL STEP-DOWN DC/DC CONVERTER RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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
LM2717MT-ADJEV 功能描述:電源管理IC開(kāi)發(fā)工具 LM2717MT-ADJ EVAL BOARD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類(lèi)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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