參數(shù)資料
型號(hào)： 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(yè)數(shù)： 4/16頁(yè)
文件大小： 328K
代理商： MAX8540
M
Synchronizable, High-Frequency Current- and
Voltage-Mode PWM Controllers for Isolated Supplies
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(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.)
PARAMETER
CONDITIONS
MIN
TYP
27
53
9
7
MAX
UNITS
C
DRV
= 500pF, 90% to 10% of V
VCC
C
DRV
= 2000pF, 90% to 10% of V
VCC
Fall Time
ns
On-Resistance Pullup
On-Resistance Pulldown
SYNC
(EXTERNAL FREQUENCY SYNCHRONIZATION)
Frequency Range
Frequency syncs
±
30% of frequency set by external R
on FREQ pin
0.2
1.0
MHz
FREQ Input Threshold
THERMAL SHUTDOWN
Thermal Shutdown
(Note 4)
2
3
V
T
A
rising, 20
°
C hysteresis
170
°
C
ELECTRICAL CHARACTERISTICS
(V
VCC
= 12V, C
REF
= 1μF, V
UV
= V
OV
= 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
OPTO
= 2V, V
ILIM
= 4V, V
CS
= 0.6V, C
DRV
= 10pF,
T
A
= -40
°
C to +85
°
C
,
unless otherwise noted.) (Note 5)
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
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
Shutdown Resistor
UNDERVOLTAGE/OVERVOLTAGE (UV/OV)
mA
I
REF
= 0
I
REF
= 0 to 10mA
V
VCC
= 8.4V to 18V
V
EN
= 3V
4.9
5.1
50
20
30
V
mV
mV
V
UV
falling, 120mV typical hysteresis
V
UV
rising
1.200
1.083
-0.5
2.901
2.778
1.300
1.173
+0.5
3.142
3.010
UVLO Threshold
V
Input Bias Current
μA
V
OV
falling, 130 mV typical hysteresis
V
OV
rising
OVLO Threshold
V
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相關(guān)代理商/技術(shù)參數(shù)
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(shí)間: 下降時(shí)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(fēng)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(shí)間: 下降時(shí)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(fēng)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(shí)間: 下降時(shí)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(fēng)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(shí)間: 下降時(shí)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(fēng)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?fù)浣Y(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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