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MAX1994ETM Datasheet(PDF) 5 Page - Maxim Integrated Products

Part # MAX1994ETM
Description  Dual Step-Down Controllers Plus Linear- Regulator Controller for Notebook Computers
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX1994ETM Datasheet(HTML) 5 Page - Maxim Integrated Products

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Dual Step-Down Controllers Plus Linear-
Regulator Controller for Notebook Computers
_______________________________________________________________________________________
5
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V+ = 15V, VOUT1 = 1.20V, VOUT2 = 2.50V, VCC = VDD = 5.0V, VSKP1/SDN = VSKP2/SDN = VLIN/SDN = 5.0V,
TA = 0°C to +85°C. Typical values are at TA = +25
°C, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ILIM1 Default Threshold
VCC -
1.5
VCC -
1.0
VCC -
0.5
V
BUCK1 Current-Limit Threshold
(Fixed)
CS1+ - CS1-; VILIM1 = VCC
40
50
60
mV
CS1+ - CS1-; VILIM1 = 0.5V
40
50
60
BUCK1 Current-Limit Threshold
(Adjustable)
CS1+ - CS1-; VILIM1 = 2.0V
160
200
240
mV
BUCK1 Negative Current-Limit
Threshold (Fixed)
CS1+ - CS1-; VILIM1 = VCC
-90
-72
-55
mV
ILIM1 Input Bias Current
0 to 2V
-100
+100
nA
CS2 Input Bias Current
0 to 28V
-1
+1
µA
ILIM2 Default Threshold
VCC -
1.5
VCC -
1.0
VCC -
0.5
V
BUCK2 Current-Limit Threshold
(Fixed)
AGND - CS2; VILIM2 = VCC
40
50
60
mV
AGND - CS2; VILIM2 = 0.5V
40
50
60
BUCK2 Current-Limit Threshold
(Adjustable)
AGND - CS2; VILIM2 = 2.0V
160
200
240
mV
BUCK2 Negative Current-Limit
Threshold (Fixed)
AGND - CS2; VILIM2 = VCC
-90
-72
-55
mV
ILIM2 Input Bias Current
0 to 2V
-100
+100
nA
Thermal-Shutdown Threshold
15°C hysteresis
160
oC
VCC Undervoltage Lockout
Threshold
Rising edge, hysteresis = 20mV
4.10
4.45
V
DH1 Gate-Driver On-Resistance
BST1–LX1 forced to 5V (Note 4)
1
4.5
Ω
DL1 high state (pullup) (Note 4)
1
4.5
DL1 Gate-Driver On-Resistance
DL1 low state (pulldown) (Note 4)
0.35
2
Ω
DH1 Gate-Driver Source/Sink
Current
DH1 forced to 2.5V, BST–LX forced to 5V
1.5
A
DL1 Gate-Driver Sink Current
DL1 forced to 2.5V
5
A
DL1 Gate-Driver Source Current
DL1 forced to 2.5V
1.5
A
DL1 rising
35
Dead Time
DH1 rising
26
ns
DH2 Gate-Driver On-Resistance
BST2–LX2 forced to 5V (Note 4)
2
8
Ω
DL2 high state (pullup) (Note 4)
2
8
DL2 Gate-Driver On-Resistance
DL2 low state (pulldown) (Note 4)
0.7
3
Ω


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