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LT7184S Datasheet(PDF) 7 Page - Analog Devices

No. de pieza LT7184S
Descripción Electrónicos  Dual Channel 9A, 16V PolyPhase Step-Down Silent Switcher 2 with Digital Power System Management
PDF  52 Pages
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Fabricante Electrónico  AD [Analog Devices]
Página de inicio  http://www.analog.com
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LT7184S Datasheet(HTML) 7 Page - Analog Devices

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Data Sheet
LT7184S
analog.com
Rev. 0
7 of 52
(TA = 25°C for typical values. For minimum and maximum values, specifications apply over the full operating
temperature range unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Error Amplifier
Transconductance
(gm(MAX))
High-Performance, Low VOUT Mode,
0.6V ≤ VOUT ≤ 1.375V,
Includes Internal VOUT Feedback Divider
5000
μS
Error Amplifier
Transconductance
(gm(MIN))
High-Performance, Low VOUT Mode,
0.6V ≤ VOUT ≤ 1.375V,
Includes Internal VOUT Feedback Divider
625
μS
Error Amplifier
Transconductance
(gm step size)
High-Performance, Low VOUT Mode,
0.6V ≤ VOUT ≤ 1.375V,
Includes Internal VOUT Feedback Divider
625
μS
Internal Compensation
Resistor Programming
Resolution
Internal Compensation
(ITH connected to INTVCC)
3
Bits
Internal Compensation
Capacitor Programming
Resolution
Internal Compensation
(ITH connected to INTVCC)
3
Bits
Positive Inductor Valley
Current Limit: (ILIM-POS)2
(Sourcing Output
Current)
ILIM Range 0
3.4
4
4.5
A
ILIM Range 1
6.0
7
7.5
A
ILIM Range 2
7.8
9
10
A
ILIM Range 3
7.8
9
10
A
Negative Inductor Valley
Current Limit (ILIM-NEG)2
(Sinking Output Current)
ILIM Range 0
-4
-3.5
-3.0
A
ILIM Range 1
-6.5
-6
-5.5
A
ILIM range 2
-8.5
-7.5
-6.5
A
ILIM Range 3
-10
-9
-8
A
Minimum On-Time
(tMIN-ON)
ILOAD = +1A, FASTSLEW = 1
25
40
ns
Minimum Off-Time
(tMIN-OFF)
85
125
ns
POWER FETs
On-Resistance (RDS-ON)
Top Switch
25
mΩ
Bottom Switch
7
mΩ
SW Leakage
PVIN = 16V, VSW = 0V, 16V, TA = 25°C
-20
20
μA
OUTPUT VOLTAGE SUPERVISORS
VOUT Undervoltage (UV)
Fault/Warning
Programming Range
TA = 25°C
0.36
5.5
V
VOUT Overvoltage (OV)
Fault/Warning
Programming Range
TA = 25°C
0.4
6
V
VOUT UV/OV Fault/Warning
Threshold Accuracy
VOUT UV/OV Threshold < 0.6V
-12
12
mV
VOUT UV/OV Threshold ≥ 0.6V
-2
2
%
VOUT UV/OV Fault/Warning
Programming Step-Size
4
mV



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