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XR79115 Fiches technique(PDF) 3 Page - Exar Corporation

No de pièce XR79115
Description  22V, 15A Synchronous Step Down COT Power Module
PDF  19 Pages
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Fabricant  EXAR [Exar Corporation]
Site Internet  http://www.exar.com
Logo EXAR - Exar Corporation

XR79115 Fiches technique(HTML) 3 Page - Exar Corporation

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© 2014 Exar Corporation
XR79115
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exar.com/XR79115
Rev 1B
VCC UVLO Start Threshold, Rising
Edge
4.00
4.25
4.40
V
VCC UVLO Hysteresis
200
mV
Reference Voltage
VREF
Reference Voltage
VIN = 5V to 22V, VCC regulating
0.597
0.600
0.603
V
VIN = 4.5V to 5.5V, VCC tied to VIN
0.596
0.600
0.604
V
VIN = 5V to 22V, VCC regulating
0.594
0.600
0.606
V
VIN = 4.5V to 5.5V, VCC tied to VIN
DC Line Regulation
CCM, closed loop, VIN=4.5V-22V, applies
to any COUT
±0.10
%
DC Load Regulation
CCM, closed loop, IOUT=0A-15A, applies
to any COUT
±0.35
%
Programmable Constant On-Time
TON(MIN)
Minimum Programmable On-Time
RON = 6.98k, VIN = 22V
120
ns
TON2
On-Time 2
RON = 6.98k, VIN = 12V
156
192
228
ns
f Corresponding to On-Time 2
VOUT = 1.0V
450
535
660
kHz
TON3
On-Time 3
RON = 16.2k, VIN = 12V
341
412
483
ns
Minimum Off-Time
250
350
ns
Diode Emulation Mode
Zero Crossing Threshold
DC value measured during test
-2
mV
Soft-start
SS Charge Current
-14
-10
-6
μA
SS Discharge Current
Fault present
1mA
VCC Linear Regulator
VCC Output Voltage
VIN = 6V to 22V, ILOAD = 0 to 30mA
4.8
5.0
5.2
V
VIN = 5V, ILOAD = 0 to 20mA
4.6
4.8
V
Power Good Output
Power Good Threshold
-10
-7.5
-5
%
Power Good Hysteresis
24
%
Power Good Sink Current
1
mA
Protection: OCP, OTP, Short-Circuit
Hiccup Timeout
110
ms
ILIM Pin Source Current
45
50
55
μA
ILIM Current Temperature Coefficient
0.4
%/°C
OCP Comparator Offset
-8
0
+8
mV
Symbol
Parameter
Conditions
Min
Typ
Max
Units



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