XR76203 Datasheet, PDF (3/20 Pages) Exar Corporation – 3A/5A/8A Synchronous Step Down COT Regulator

XR76203/5/8
Symbol
Parameter
Conditions
VCC UVLO Start Threshold, Rising
Edge
VCC UVLO Hysteresis
Reference Voltage
V_REF
Reference Voltage
DC Line Regulation
DC Load Regulation
Programmable Constant On-Time
T_ON1
On-Time 1
f Corresponding to On-Time 1
T_ON(MIN)
T_ON2
T_ON3
Minimum Programmable On-Time
On-Time 2
On-Time 3
f Corresponding to On-Time 3
f Corresponding to On-Time 3
Minimum Off-Time
Diode Emulation Mode
Zero Crossing Threshold
Soft-start
SS Charge Current
SS Discharge Current
VCC Linear Regulator
VCC Output Voltage
Power Good Output
Power Good Threshold
Power Good Hysteresis
Power Good Sink Current
Protection: OCP, OTP, Short-Circuit
Hiccup Timeout
ILIM Pin Source Current
ILIM Current Temperature Coefficient
OCP Comparator Offset
V_IN = 5.5V to 40V, VCC regulating
V_IN = 5.5V to 40V, VCC regulating
CCM, closed loop, V_IN=5.5V-40V, applies
to any C_OUT
CCM, closed loop, applies to any C_OUT
R_ON = 237k, V_IN = 40V
V_OUT= 24V, V_IN = 40V, R_ON = 237k
R_ON = 14k, V_IN = 40V
R_ON = 14k, V_IN = 24V
R_ON = 35.7k, V_IN = 24V
V_OUT = 3.3V, V_IN = 24V, R_ON = 35.7k
V_OUT = 5.0V, V_IN = 24V, R_ON = 35.7k
DC value measured during test
Fault present
V_IN = 6V to 40V, I_LOAD = 0 to 30mA
V_IN = 5V, I_LOAD = 0 to 20mA
Min
Typ
Max

4.00
4.25
4.40
230
0.596 0.600 0.604
 0.594 0.600 0.606
±0.33
±0.39

1570 1840 2120

283
326
382
120

174
205
236

407
479
550

250
287
338

379
435
512

250
350
-2

-14
-10
-6

1

4.8
5.0
5.2

4.51
4.7
-10
-6.9
-5
1.6
4
1
110
45
50
55
0.4

-8
0
+8
Units
V
mV
V
V
%
%
ns
kHz
ns
ns
ns
kHz
kHz
ns
mV
μA
mA
V
V
%
%
mA
ms
μA
%/°C
mV
© 2015 Exar Corporation
3 / 20
exar.com/XR76203/5/8
Rev 1A