參數(shù)資料
型號(hào)： LM2746
廠商： National Semiconductor Corporation
英文描述： Low Voltage N-Channel MOSFET Synchronous Buck Regulator Controller
中文描述： 低壓N溝道MOSFET同步降壓穩(wěn)壓控制器
文件頁數(shù)： 3/24頁
文件大?。?/td> 1087K
代理商： LM2746
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
CC
BOOT Voltage
All other pins
Junction Temperature
Storage Temperature
Soldering Information
Lead Temperature
(soldering, 10sec)
-0.3 to 6.25V
-0.3 to 21V
-0.3 to V
CC
+ 0.3V
150C
65C to 150C
260C
Infrared or Convection (20sec)
ESD Rating (Note 2)
235C
2 kV
Operating Ratings
Supply Voltage Range (V
CC
)
Power Stage Input Voltage (V
IN
)
Junction Temperature Range
(T
J
)
Thermal Resistance (
θ
JA
)
3V to 5.5V
1V to 16V
40C to +125C
38C/W
Electrical Characteristics
V
CC
= 3.3V unless otherwise indicated. Limits in standard type are for T
J
= 25C only; limits in
boldface type
apply over the
junction temperature (T
J
) range of -40C to +125C. Minimum and Maximum limits are guaranteed through test, design, or sta-
tistical correlation. Typical values represent the most likely parametric norm at T
J
= 25C, and are provided for reference pur-
poses only.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
FB
FB Pin Voltage
V
CC
= 3V to 5.5V
T
J
= 25C to +85C
T
J
= 40C to +125C
Rising
Falling
V
CC
= 3.3V, V
SD
= 3.3V
Fsw = 600kHz
V
CC
= 5V, V
SD
= 3.3V
Fsw = 600kHz
V
CC
= 3.3V, V
SD
= 0V
V
FB
Rising
V
FB
Falling
V
SS
= 0V
V
SS
= 2.5V
V
0.594
0.592
0.6
0.6
2.76
2.42
0.606
0.608
V
ON
UVLO Thresholds
V
I
Q_VCC
Operating V
CC
Current
1.0
1.5
2.1
mA
1.0
1.7
2.1
Shutdown V
CC
Current
PWGD Pin Response Time
PWGD Pin Response Time
SS Pin Source Current
SS Pin Sink Current During
Over Current
I
SEN
Pin Source Current Trip
Point
1
10
10
10
5
μA
μs
μs
μA
t
PWGD1
t
PWGD2
I
SS-ON
I
SS-OC
7
14
100
μA
I
SEN-TH
25
40
55
μA
ERROR AMPLIFIER
GBW
Error Amplifier Unity Gain
Bandwidth
Error Amplifier DC Gain
Error Amplifier Slew Rate
EAO Pin Current Sourcing and
Sinking Capability
Error Amplifier Output Voltage
9
MHz
G
SR
I
EAO
106
3.2
2.6
9.2
0
3.3
dB
V/μs
V
EAO
= 1.5, FB = 0.55V
V
EAO
= 1.5, FB = 0.65V
Minimum
Maximum
mA
V
EA
V
V
L
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相關(guān)PDF資料
PDF描述
LM2746MXA Low Voltage N-Channel MOSFET Synchronous Buck Regulator Controller
LM2746MXAX Low Voltage N-Channel MOSFET Synchronous Buck Regulator Controller
LM2753SD High Power Switched Capacitor Voltage Convertor/Flash LED Driver
LM2753 High Power Switched Capacitor Voltage Convertor/Flash LED Driver
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM2746MXA 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Low Voltage N-Channel MOSFET Synchronous Buck Regulator Controller
LM2746MXA/NOPB 功能描述:IC REG CTRLR BUCK PWM VM 14TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,000 系列:- PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR)
LM2746MXAX 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Low Voltage N-Channel MOSFET Synchronous Buck Regulator Controller
LM2746MXAX/NOPB 功能描述:IC REG CTRLR BUCK PWM VM 14TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:100% 電源電壓:8.2 V ~ 30 V 降壓:無 升壓:無 回掃:是 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:是 工作溫度:0°C ~ 70°C 封裝/外殼:8-DIP（0.300"，7.62mm） 包裝:管件 產(chǎn)品目錄頁面:1316 (CN2011-ZH PDF)
LM2747 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Synchronous Buck Controller with Pre-bias Startup, and Optional Clock Synchronization
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