參數(shù)資料
型號(hào)： MAX1938EEI
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi)： 穩(wěn)壓器
英文描述： Two-Phase Desktop CPU Core Supply Controllers with Controlled VID Change
中文描述： SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO28
封裝： 0.150 INCH, 0.025 INCH PITCH, MO-137, QSOP-28
文件頁(yè)數(shù)： 2/24頁(yè)
文件大小： 586K
代理商： MAX1938EEI
M
Two-Phase Desktop CPU Core Supply Controllers
with Controlled VID Change
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
V
CC
to GND............................................................-0.3V to +28V
V
DD
, PWRGD, ILIM, FB to GND ...............................-0.3V to +6V
EN, GNDS, VPOS, REF, VID_,
TIME to GND............................................0.3V to V
VDD
+ 0.3V
PGND to GND .......................................................-0.3V to +0.3V
CS1, CS2 to GND......................................................-2V to +28V
VLG to GND..............................................................-0.3V to +7V
BST1, BST2 to GND ...............................................-0.3V to +35V
LX1 to BST1..............................................................-7V to +0.3V
LX2 to BST2..............................................................-7V to +0.3V
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.
DH1 to LX1.................................................-0.3V to V
BST1
+ 0.3V
DH2 to LX2.................................................-0.3V to V
BST2
+ 0.3V
DL1, DL2 to PGND......................................-0.3V to V
VLG
+ 0.3V
Continuous Power Dissipation (T
A
= +70
°
C)
28-Pin QSOP (derate 20.8mW/
°
C above +70
°
C)......860.2mW
Operating Temperature Range ...........................-40
°
C to +85
°
C
Junction Temperature......................................................+150
°
C
Storage Temperature Range.............................-65
°
C to +150
°
C
Lead Temperature (soldering, 10s).................................+300
°
C
ELECTRICAL CHARACTERISTICS
(V
CC
= 12V, V
EN
= V
VDD
= 5V, PGND = GNDS = GND = 0, VID_ = GND, C
VPOS
= 47pF, C
REF
= 0.1μF, V
ILIM
= 1V,
T
A
= 0°C to
+85°C
, unless otherwise noted. Typical values are at T
A
= +25
°
C.)
PARAMETER
CONDITIONS
GENERAL
MAX1937
V
CC
Operating Range
MAX1938/MAX1939
V
DD
Operating Range
VLG Operating Range
V
VLG
> V
VDD
V
CC
Operating Supply Current
FB above threshold (no switching)
V
DD
Operating Supply Current
FB above threshold (no switching)
VLG Operating Supply Current
FB above threshold (no switching)
V
CC
Shutdown Current
EN = GND
V
DD
Shutdown Current
EN = GND, VID_ not connected
VLG Shutdown Current
EN = GND
TIME Output Voltage
ILIM Input Bias
V
ILIM
= 1.5V
CS_= GND, VPOS connected to REF through a 75k
resistor
REFERENCE
Reference Voltage
-50μA
≤
I
REF
≤
50μA
SOFT-START
MAX1937
MAX1938
Ramp Period
MAX1939
Soft-Start Voltage Step
ERROR AMPLIFIER
FB Input Resistance
Resistance from FB to GND
GNDS Input Bias Current
Output Regulation Voltage
Accuracy
MIN
TYP
5
20
1.4
<1
50
<1
2.00
MAX
24
24
5.5
6.5
40
2.5
60
5
100
5
2.04
+250
UNITS
6
8
V
4.5
4.5
20
1.96
-250
V
V
μA
mA
μA
μA
μA
μA
V
nA
VPOS Output Voltage
1.96
2.0
2.04
V
1.987
1.1
1.5
1.3
-5
2.000
25
180
2.013
5.5
6.2
6.5
+5
V
ms
mV
k
μA
-0.75
+0.75
%
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MAX1938EEI-T 功能描述:DC/DC 開(kāi)關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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
MAX1938EEI-TG069 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
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MAX1939EEI 功能描述:DC/DC 開(kāi)關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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
MAX1939EEI-T 功能描述:DC/DC 開(kāi)關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開(kāi)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
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