參數(shù)資料
型號： MAX8540
廠商： Maxim Integrated Products, Inc.
英文描述： Synchronizable. High-Frequency Current- and Voltage-Mode PWM Controllers for Isolated Supplies
中文描述： 可同步、高頻、電流或電壓模式PWM控制器，用于隔離電源
文件頁數(shù)： 2/16頁
文件大?。?/td> 328K
代理商： MAX8540
M
Synchronizable, High-Frequency Current- and
Voltage-Mode PWM Controllers for Isolated Supplies
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
V
CC
to GND............................................................-0.3V to +20V
OPTO, UV, OV,
EN
, PRAMP, ILIM, REF to GND ......-0.3V to +6V
SCOMP, FREQ, CS, SKTON, SKTOFF, SS,
MAXDTY to GND .....................................-0.3V to V
REF
+ 0.3V
DRV to GND................................................-0.3V to V
VCC
+ 0.3V
Continuous Power Dissipation (T
A
= +70°C)
16-Pin QSOP (derate 8.3mW/°C above +70°C)...........667mW
ELECTRICAL CHARACTERISTICS
(V
VCC
= 12V, C
REF
= 1μF, V
UV
= V
OV
= V
OPTO
, V
ILIM
= 2V, R
FREQ/SYNC
= 32.4k
, C
SS
= 0.1μF, R
MAXDTY
= 97.6k
, V
EN
= 0,
R
SCOMP
= 68k
, R
PRAMP
= 25k
, C
SKTON
= 0.01μF, C
SKTOFF
= 0.1μF, V
CS
= 0.6V, C
DRV
= 10pF,
T
A
= 0°C to +85°C
, unless otherwise
noted. Typical values are at T
A
= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Operating Temperature Range ...........................-40
°
C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65
°
C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
CC
Operating Voltage Range
(Note 1)
V
CC
rising
V
CC
falling
7.6
7.6
6.6
0.9
18.0
8.4
7.4
V
8.0
7.0
1.0
3.5
5
0.5
Undervoltage Lockout
V
Undervoltage Lockout Hysteresis
V
No switching
Switching with no load
4.2
6.3
0.9
Supply Current
V
REF
is active,
I
REF
= 0
V
EN
= 3V
mA
Shutdown Current
REF
Output Voltage
Load Regulation
Line Regulation
Pulldown Resistor in Shutdown
UNDERVOLTAGE/OVERVOLTAGE (UV/OV)
mA
I
REF
= 0
I
REF
= 0 to 10 mA
V
VCC
= 8.4V to 18V
V
EN
= 3V
4.9
5.0
20
5
10
5.1
50
20
30
V
mV
mV
V
UV
rising, 120mV typical hysteresis
V
UV
falling
1.200
1.083
-0.5
2.9
2.778
1.250
1.128
+0.01
3.021
2.894
1.300
1.173
+0.5
3.1
3.010
UVLO Threshold
V
Input Bias Current
μA
V
OV
rising, 130mV typical hysteresis
V
OV
falling
OVLO Threshold
V
EN
Input Low Threshold
Input High Threshold
Pullup Current
CURRENT LIMIT
V
ILIM
Range
CS Current-Limit to DRV Turn-Off
Delay
V
IL
V
IH
V
EN
= 2.6V
1.2
V
V
μA
2.6
5
17
0.075
1.250
V
Includes leading-edge blanking time
110
150
ns
Accuracy when V
ILIM
= 0.075V
V
ILIM
= 1.250V
±10
1.250
%
V
V
CS
Cycle-by-Cycle Threshold
Voltage
1.175
1.330
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參數(shù)描述
MAX8540EEE 功能描述:電流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX8540EEE+ 功能描述:電流型 PWM 控制器 Synchronizable PWM Controller RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX8540EEE+T 功能描述:電流型 PWM 控制器 PWM Controller Curr-Mode RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX8540EEE-T 功能描述:電流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX8541EEE 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(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)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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