參數(shù)資料
型號： MAX8541
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)： 5/16頁
文件大?。?/td> 328K
代理商： MAX8541
M
Synchronizable, High-Frequency Current- and
Voltage-Mode PWM Controllers for Isolated Supplies
_______________________________________________________________________________________
5
ELECTRICAL CHARACTERISTICS (continued)
(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
EN
V
IL
V
IH
V
EN
= 2.6V
1.2
Input Threshold
2.6
5
V
Pullup Current
CURRENT LIMIT
V
ILIM
Range
CS Current Limit to DRV Delay
μA
0.075
1.25
150
V
ns
%
V
μA
μA
μA
V
Includes leading-edge blanking time
Accuracy when V
ILIM
= 0.075V
V
ILIM
= 1.250V
±10
V
CS
C ycl e- b y- C ycl e Thr eshol d V ol ag e
1.130
-1
0.9
1.5
2.3
1.375
+1
2.1
3.5
2.7
ILIM Leakage Current
Hiccup Skip Off-Charging Current
Hiccup Skip On-Charging Current
Hiccup SKTOFF Voltage Threshold
DUTY CYCLE
Duty-Cycle Range
Maximum Duty Cycle
SOFT-START
Source Current
Pulldown Resistance in Shutdown
FREQUENCY
Initial Accuracy
SYNC (EXTERNAL FREQUENCY SYNCHRONIZATION)
V
UV
= 1.3V
Internal programmed max duty at all frequencies
15
79
80
82
%
%
V
SS
= 1V
I
SS
= 10mA, V
EN
= 3V
4.5
6.5
30
μA
R
FREQ
= 32.4k
280
320
kHz
Frequency Range
Frequency syncs
±
30% of frequency set by
external R on FREQ pin
0.2
1.0
MHz
FREQ Input Threshold
(Note 4)
2
3
V
Note 1:
This is the V
CC
operating range after clearing the rising UVLO.
Note 2:
Guaranteed by design.
Note 3:
See the
SKTON and SKTOFF
section.
Note 4:
The minimum FREQ pulse must be 200ns in duration with a minimum magnitude of 3V plus V
F
of the external diode and
have a maximum duty cycle of 55%.
Note 5:
Specifications to -40
°
C are guaranteed by design and not production tested.
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參數(shù)描述
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
MAX8541EEE+ 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX8541EEE-T 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
MAX8543EEE 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(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
MAX8543EEE+ 功能描述:電流型 PWM 控制器 Step-Down 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(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
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