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參數資料
| 型號： | MAX1939 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Two-Phase Desktop CPU Core Supply Controllers with Controlled VID Change |
| 中文描述： | 雙相、臺式機CPU核電源控制器，帶有受控的VID調節(jié) |
| 文件頁數： | 2/24頁 |
| 文件大小： | 586K |
| 代理商： | MAX1939 |
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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