參數(shù)資料
型號： LM5027AMHX
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO20
封裝： TSSOP-20
文件頁數(shù)： 24/28頁
文件大?。?/td> 561K
代理商： LM5027AMHX
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
VIN to GND
-0.3V to 105V
VCC to GND
-0.3V to 16V
UVLO to GND
-0.3 to 8V
All other inputs to GND
-0.3 to 7V
COMP Input Current
10 mA
COMP, REF (Note 2)
ESD Rating (Note 3)
Human Body Model
2kV
Storage Temperature Range
-55°C to 150°C
Junction Temperature
150°C
Operating Ratings (Note 1)
VIN
13 to 90V
VCC
8 to 15V
Operating Junction Temperature
-40°C to +125°C
Electrical Characteristics Limits in standard type are for T
J = 25°C only; limits in boldface type apply over the
junction temperature range of –40°C to +125°C. Unless otherwise specified, the following conditions apply: VIN = 48V, VCC = 10V,
RT= 38.4K , No Load on OUTA, OUTB and OUTSR unless otherwise stated.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
VIN SUPPLY
Ibias
VIN Operating Current
COMP and VCC Open, UVLO and OTP = 3V
6.8
mA
VIN Shutdown Current
UVLO = 0V, Vin = 100 V
310
650
A
VCC REGULATOR
VCC Regulation
No Load (SS<4V)
9.1
9.5
9.9
V
VCC Current Limit
VCC=9.5V
55
65
mA
VCC Regulator load regulation
IVCCREG 0 to 15 mA
75
mV
VCC Under-voltage Lockout
Voltage
Positive going VCC
VccReg
–180mV
VccReg –
100mV
V
VccReg
VCC Regulation
No Load
7.3
7.5
7.7
V
VCC Under-voltage Lockout
Voltage
Negative going Vcc
5.7
6.0
6.3
V
VCC Supply Current (Icc)
Supply current into VCC form an external
source, CGATE = OPEN, VCC 10V
6
mA
REFERENCE SUPPLY
Reference Voltage
IREF = 0mA
4.85
5.0
5.15
V
Reference Voltage Regulation
IREF= 0 to 10mA
10
20
mV
Reference Current Limit
10
17.5
mA
REF Under-voltage Threshold
UVLO >0.4V, VCC >9.5V
3.8
V
UVLO/OTP THRESHOLDS
UVLO Threshold
1.9
2
2.1
V
UVLO Hysteresis Current
UVLO
16
20
25
A
UVLO Shutdown Threshold
ULVLO voltage falling
0.3
V
UVLO Standby Enable
Threshold
UVLO voltage rising
0.4
V
OTP Shutdown Threshold
OTP rising
1.21
1.25
1.29
V
OTP Hysteresis Current
OTP
15
20
24
A
SOFT-START
SS Charging Current Source
SS = 0V
17
22
26
A
SS Rising Threshold for SSSR
charge current enable
3.85
4.05
4.25
V
SSSR Charging Current Source SSSR = 0V, SS>4V
18
25
30
A
SSSR Discharge Current
Source in Soft Stop
14
20
26
A
SSSR Falling Threshold for SS
Soft Stop
1.5
2.2
3.0
V
SS output low voltage
Sinking 100 A UVLO = 0
120
mV
SSSR output low voltage
100
mV
5
www.national.com
LM5027A
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參數(shù)描述
LM5027AMHX/NOPB 功能描述:電壓模式 PWM 控制器 RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
LM5027ASQ/NOPB 功能描述:電壓模式 PWM 控制器 RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
LM5027ASQX/NOPB 功能描述:電壓模式 PWM 控制器 RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
LM5027MH 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Voltage Mode Active Clamp Controller
LM5027MH/NOPB 功能描述:電壓模式 PWM 控制器 Voltage Mode Active Clamp Controller RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓撲結構:Buck 輸出電壓:34 V 輸出電流: 開關頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
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