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參數(shù)資料
| 型號： | MAX1977 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | High-Efficiency, Quad Output, Main Power- Supply Controllers for Notebook Computers |
| 中文描述： | 高效率、四路輸出、主電源控制器，用于筆記本電腦 |
| 文件頁數(shù)： | 2/32頁 |
| 文件大小： | 497K |
| 代理商： | MAX1977 |
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M
High-Effic ienc y, Quad Output, Main Power-
S upply Controllers for Notebook Computers
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
V+,
SHDN
to GND..................................................-0.3V to +25V
BST_ to GND ..........................................................-0.3V to +30V
LX_ to BST_ ..............................................................-6V to +0.3V
CS_ to GND (MAX1777/MAX1977 only)......................-2V to +6V
V
CC
, LDO5, LDO3, OUT3, OUT5, ON3, ON5, REF,
FB3, FB5,
SKIP
,
PRO
, PGOOD to GND ...............-0.3V to +6V
DH3 to LX3..............................................-0.3V to (V
BST3
+ 0.3V)
DH5 to LX5..............................................-0.3V to (V
BST5
+ 0.3V)
ILIM3, ILIM5 to GND...................................-0.3V to (V
CC
+ 0.3V)
DL3, DL5 to GND....................................-0.3V to (V
LDO5
+ 0.3V)
TON to GND (MAX1999 only)...................................-0.3V to +6V
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1 and Figure 2, no load on LDO5, LDO3, OUT3, OUT5, and REF, V+ = 12V, ON3 = ON5 = V
CC
, V
SHDN
= 5V,
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.
LDO3, LDO5, REF Short Circuit to GND ....................Momentary
LDO3 Current (Internal Regulator) Continuous ..............+100mA
LDO3 Current (Switched Over to OUT3) Continuous.....+200mA
LDO5 Current (Internal Regulator) Continuous ..............+100mA
LDO5 Current (Switched Over to OUT5) Continuous.....+200mA
Continuous Power Dissipation
28-Pin QSOP (derate 10.8mW/°C above +70°C).........860mW
Operating Temperature Range ...........................-40°C to +85°C
J unction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
MAIN SMPS CONTROLLERS
LDO5 in regulation
V+ = LDO5, V
OUT5
< 4.43V
6
24
5.5
V+ Input Voltage Range
4.5
V
3.3V Output Voltage in
Fixed Mode
V+ = 6V to 24V, FB3 = GND, V
SKIP
= 5V
3.285
3.330
3.375
V
V+ = 6V to 24V, FB5 = GND, V
SKIP
= 5V,
MAX1777/MAX1999 (TON = V
CC
)
5V Output Voltage in Fixed Mode
V+ = 7V to 24V, FB5 = GND, V
SKIP
= 5V,
MAX1977/MAX1999 (TON = GND)
4.975
5.050
5.125
V
Output Voltage in
Adjustable Mode
V+ = 6V to 24V, either SMPS
1.975
2.00
2.025
V
Output Voltage Adjust Range
Either SMPS
2.0
5.5
V
FB3, FB5 Adjustable-Mode
Threshold Voltage
Dual-mode comparator
0.1
0.2
V
Either SMPS, V
SKIP
= 5V, 0 to 5A
Either SMPS,
SKIP
= GND, 0 to 5A
Either SMPS, V
SKIP
= 2V, 0 to 5A
Either SMPS, 6V < V+ < 24V
-0.1
-1.5
-1.7
0.005
DC Load Regulation
%
Line Regulation
%/V
Current-Limit Threshold
(Positive, Default)
ILIM_ = V
CC
, GND - CS_ (MAX1777/MAX1977),
GND - LX_ (MAX1999)
93
100
107
mV
V
ILIM_
= 0.5V
V
ILIM_
= 1V
V
ILIM_
= 2V
40
93
185
50
100
200
60
107
215
Current-Limit Threshold
(Positive, Adjustable)
GND - CS_
(MAX1777/MAX1977),
GND - LX_ (MAX1999)
mV
Zero-Current Threshold
SKIP
= GND, ILIM_ = V
CC
, GND - CS_
(MAX1777/MAX1977), GND - LX_ (MAX1999)
3
mV
Current-Limit Threshold
(Negative, Default)
SKIP
= ILIM_ = V
CC
, GND - CS_ (MAX1777/MAX1977),
GND - LX_ (MAX1999)
-120
mV
Soft-Start Ramp Time
Zero to full limit
1.7
ms
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1977EEI | 功能描述:DC/DC 開關控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 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 安裝風格: 封裝 / 箱體:CPAK |
| MAX1977EEI+ | 功能描述:DC/DC 開關控制器 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 安裝風格: 封裝 / 箱體:CPAK |
| MAX1977EEI+T | 功能描述:DC/DC 開關控制器 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 安裝風格: 封裝 / 箱體:CPAK |
| MAX1977EEI-T | 功能描述:DC/DC 開關控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 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: |
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