XR77103-A0R5 Datasheet, PDF (4/19 Pages) Exar Corporation – Universal PMIC 3-Output Buck Regulator

XR77103-A0R5
Electrical Characteristics (Continued)
T_A = 25°C, V_IN = 12V, EN = V_CC, f_SW = 500kHz, unless otherwise specified. Limits applying over the full operating temperature
range are denoted by a •.
Symbol
Parameter
Conditions
• Min
Protections
T_SD
HY_TSD
T_{SD_DEGLITCH}
Thermal shutdown temperature
Thermal shutdown hysteresis
Thermal shutdown deglitch
V_OVBUCK
Threshold voltage for buck
over voltage
Buck Converter
Temperature rising, Non-latch off.
T_SD release threshold,
temperature = T_SD-HY_TSD
Output rising
(HS FET will be forced off)
Output falling
(HS FET will be allowed to switch)
f_SW
t_SS
I_LIMx
R_{ON_HSx}
R_{ON_LS1}
R_{ON_LS2/3}
I_Ox
D_MAX
t_{ON MIN}
SYNC_FREQ
SYNC_{D_MIN}
SYNC_{D_MAX}
Switching frequency
Soft-start period
Peak inductor current limit
HS switch on-resistance
V_IN = 12V
LS switch on-resistance of Buck1 V_IN = 12V
LS switch on-resistance of Buck2/3 V_IN = 12V
Output current capability
Continuous loading⁽¹⁾
Maximum duty cycle
Minimum on time
Line regulation (ΔV_OX/ΔV_INX)
Load regulation (ΔV_OX/ΔI_OX)
Output voltage accuracy
Synchronization frequency
Synchronization signal
minimum duty cycle
Synchronization signal
maximum duty cycle
V_INX = 5.5 to 14V, I_OX = 1A
I_O = 10 to 90%, I_O = MAX
V_IN = 12V
5.5V ≤ V_IN ≤ 14V
•
-1
•
-2
525
•
40
•
NOTE:
1. Subject to thermal derating. Design must not exceed the package thermal rating.
Typ
160
20
220
109
107
500
6
3.5
200
60
80
2
95
120
0.5
0.5
Normal
Normal
Max
1
2
60
Units
°C
°C
µs
%
%
kHz
ms
A
mΩ
mΩ
mΩ
A
%
ns
%V_O
%V_O/A
%
kHz
%
%
REV1A
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