參數(shù)資料
型號(hào)： MAX1549ETL+
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 穩(wěn)壓器
英文描述： Dual, Interleaved, Fixed-Frequency Step-Down Controller with a Dynamically Adjustable Output
中文描述： DUAL SWITCHING CONTROLLER, 450 kHz SWITCHING FREQ-MAX, PQCC40
封裝： 6 X 6 MM, 0.8 MM HEIGHT, MO220WJJD-2, QFN-40
文件頁(yè)數(shù)： 32/35頁(yè)
文件大小： 504K
代理商： MAX1549ETL+
MAX1549
Dual, Interleaved, Fixed-Frequency Step-Down
Controller with a Dynamically Adjustable Output
6
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, VCC = VDD = 5V, SKIP = GND, TA = -40°C to +85°C, unless otherwise noted.) (Note 4)
PARAMETER
SYMBOL
CONDITIONS
MIN
MAX
UNITS
FSEL = GND
70
130
FSEL = REF
170
230
FSEL = open
270
330
Operating Frequency
fOSC
(Note 2)
FSEL = VCC
350
450
kHz
Maximum Duty Cycle
DMAX
91
%
REFERENCE (REF)
Reference Voltage
VREF
VCC = 4.5V to 5.5V, IREF = 0
1.985
2.015
V
Reference Load Regulation
VREF
IREF = -10A to +100A
1.980
2.020
V
REFIN Voltage Range
0.5
2.0
V
FAULT DETECTION
Output Overvoltage
Trip Threshold
With respect to error-comparator threshold
12
17
%
Output Undervoltage-Protection
Trip Threshold
With respect to error-comparator threshold
65
75
%
PGOOD_ Lower Trip Threshold
With respect to error-comparator threshold,
hysteresis = 1%
-12.5
-7.5
%
PGOOD_ Upper Trip Threshold
With respect to error-comparator threshold,
hysteresis = 1%
+7.5
+12.5
%
PGOOD_ Output Low Voltage
ISINK = 4mA
0.3
V
FBLANK = VCC
110
190
FBLANK = open
60
140
Fault-Blanking Time
tFBLANK
FBLANK = REF
22
75
s
VCC Undervoltage-Lockout
Threshold
VCC(UVLO)
Rising edge, PWM disabled below this
level, hysteresis = 50mV
4.1
4.4
V
CURRENT LIMIT
ILIM_ Adjustment Range
0.25
VREF
V
Current-Limit Input Range
VCSH_, VCSL _
0
2.7
V
Current-Limit Threshold (Fixed)
VLIMIT
VCSH_ - VCSL _, ILIM_ = VCC
65
75
mV
VILIM_ = 2.0V
170
230
VILIM_ = 1.0V
89
111
Current-Limit Threshold
(Adjustable)
VLIMIT
VCSH_ - VCSL _
VILIM_ = 0.5V
42
58
mV
Idle-Mode Threshold
VCSH_ - VCSL _, ILIM_ = VCC
10
20
mV
GATE DRIVERS
DH_ Gate-Driver On-Resistance
RDH
BST_ - LX_ forced to 5V
6
DL_, high state
6
DL_ Gate-Driver On-Resistance
RDL
DL_, low state
2.7
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1549ETL+ 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
MAX1549ETL+T 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
MAX1549ETL-T 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
MAX1549EVKIT 功能描述:電源管理IC開發(fā)工具 RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
MAX154ACAG 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
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