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XR76203ELTR-F Datasheet(PDF) 3 Page - Exar Corporation

Part No. XR76203ELTR-F
Description  3A/5A/8A Synchronous Step Down COT Regulator
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

XR76203ELTR-F Datasheet(HTML) 3 Page - Exar Corporation

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© 2015 Exar Corporation
XR76203/5/8
3 / 20
exar.com/XR76203/5/8
Rev 1A
VCC UVLO Start Threshold, Rising
Edge
4.00
4.25
4.40
V
VCC UVLO Hysteresis
230
mV
Reference Voltage
VREF
Reference Voltage
VIN = 5.5V to 40V, VCC regulating
0.596
0.600
0.604
V
VIN = 5.5V to 40V, VCC regulating
0.594
0.600
0.606
V
DC Line Regulation
CCM, closed loop, VIN=5.5V-40V, applies
to any COUT
±0.33
%
DC Load Regulation
CCM, closed loop, applies to any COUT
±0.39
%
Programmable Constant On-Time
TON1
On-Time 1
RON = 237k, VIN = 40V
1570
1840
2120
ns
f Corresponding to On-Time 1
VOUT= 24V, VIN = 40V, RON = 237k
283
326
382
kHz
TON(MIN)
Minimum Programmable On-Time
RON = 14k, VIN = 40V
120
ns
TON2
On-Time 2
RON = 14k, VIN = 24V
174
205
236
ns
TON3
On-Time 3
RON = 35.7k, VIN = 24V
407
479
550
ns
f Corresponding to On-Time 3
VOUT = 3.3V, VIN = 24V, RON = 35.7k
250
287
338
kHz
f Corresponding to On-Time 3
VOUT = 5.0V, VIN = 24V, RON = 35.7k
379
435
512
kHz
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 40V, ILOAD = 0 to 30mA
4.8
5.0
5.2
V
VIN = 5V, ILOAD = 0 to 20mA
4.51
4.7
V
Power Good Output
Power Good Threshold
-10
-6.9
-5
%
Power Good Hysteresis
1.6
4
%
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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