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XR79203 Datasheet, PDF (4/19 Pages) Exar Corporation – 40V, 3A Synchronous Step-Down | |||
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XR79203
Electrical Characteristics (Continued)
TJ = 25°C, VIN = 24V, BST = VCC, SW = AGND = PGND = 0V, CVCC = 4.7μF, unless otherwise specified. Limits applying
over the full operating temperature range are denoted by a â¢.
Symbol Parameter
Protection: OCP, OTP, Short-Circuit
Hiccup timeout
ILIM/RDS
ILIM current temperature
coefficient
ILIM comparator offset
Current limit blanking
Thermal shutdown threshold
Thermal hysteresis
Feedback pin short-circuit
threshold
Output Power Stage
RDSON
High-side MOSFET
Low-side MOSFET
IOUT
L
Maximum output current
Output inductance
CIN
CBST
Input capacitance
Bootstrap capacitance
Conditions
GL rising >1V
Rising temperature
Percent of VREF, short-circuit is active.
After PGOOD is asserted
IDS = 2A
⢠Min
Typ
Max Units
110
ms
2.40
2.85
3.20 µA/mΩ
0.4
%/°C
â¢
-8
0
8
mV
100
ns
150
°C
15
°C
â¢
50
60
70
%
â¢
3
3.7
41
59
mâ¦
17
21.5
mâ¦
A
4.7
5.6
μH
1
μF
0.1
μF
REV1B
4/19
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