參數(shù)資料
型號(hào)： MAX1977EEI
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 穩(wěn)壓器
英文描述： High-Efficiency, Quad Output, Main Power- Supply Controllers for Notebook Computers
中文描述： DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO28
封裝： 0.150 INCH, 0.025 INCH PITCH, QSOP-28
文件頁數(shù)： 6/32頁
文件大?。?/td> 497K
代理商： MAX1977EEI
M
High-Effic ienc y, Quad Output, Main Power-
S upply Controllers for Notebook Computers
6
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1 and Figure 2, no load on LDO5, LDO3, OUT3, OUT5, and REF, V+ = 12.0.V, ON3 = ON5 = V
CC
, V
SHDN
= 5V,
T
A
= -40°C to +85°C
, unless otherwise noted.) (Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
LDO5 Bootstrap Switch Threshold
Falling edge of OUT5, rising edge at OUT5 regulation
point
4.43
4.69
V
LDO5 Bootstrap
Switch Resistance
LDO5 to OUT5, V
OUT5
= 5V
3.2
LDO3 Output Voltage
ON3 = ON5 = GND, 6V < V+ < 24V, 0 < I
LDO3
< 100mA
Falling edge of OUT3, rising edge at OUT3 regulation
point
3.27
3.43
V
LDO3 Bootstrap Switch Threshold
2.80
3.02
V
LDO3 Bootstrap
Switch Resistance
LDO3 to OUT3, V
OUT3
= 3.2V
3.5
REF Output Voltage
REF Load Regulation
REF Sink Current
V+ Operating Supply Current
V+ Standby Supply Current
V+ Shutdown Supply Current
No external load
0 < I
LOAD
< 50μA
REF in regulation
LDO5 switched over to OUT5, 5V SMPS
V+ = 6V to 24V, both SMPSs off, includes I
SHDN
V+ = 4.5V to 24V
1.975
2.025
10
V
mV
μA
μA
μA
μA
10
50
300
15
Quiescent Power Consumption
Both SMPSs on, FB3 = FB5 =
SKIP
= GND, V
OUT3
=
3.5V, V
OUT5
= 5.3V
4.5
mW
FAULT DETECTION
Overvoltage Trip Threshold
FB3 or FB5 with respect to nominal regulation point
+8
+14
%
PGOOD Threshold
FB3 or FB5 with respect to nominal output, falling edge,
typical hysteresis = 1%
-12
-7
%
PGOOD Output Low Voltage
PGOOD Leakage Current
I
SINK
= 4mA
High state, forced to 5.5V
0.3
1
V
μA
Output Undervoltage
Shutdown Threshold
FB3 or FB5 with respect to nominal output voltage
65
75
%
Output Undervoltage
Shutdown Blanking Time
From ON_ signal
10
40
ms
INPUTS AND OUTPUTS
Feedback Input Leakage Current
V
FB3
= V
FB5
= 2.2V
Low level
High level
Low level
Float level
High level
Low level
High level
-200
+200
0.6
nA
PRO
Input Voltage
1.5
V
0.8
2.3
1.7
2.4
SKIP
Input Voltage
V
0.8
TON Input Voltage
2.4
V
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1977EEI+ 功能描述:DC/DC 開關(guān)控制器 Quad Out Main Power Supply Controller 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
MAX1977EEI+T 功能描述:DC/DC 開關(guān)控制器 Quad Out Main Power Supply Controller 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
MAX1977EEI-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
MAX1977EEI-TG068 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX1978ETM 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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