XR77103-A1R0 Datasheet, PDF (4/19 Pages) Exar Corporation – Universal PMIC 3-Output Buck Regulator

XR77103-A1R0
Electrical Characteristics (Continued)
T_A = 25°C, V_IN = 12V, EN = V_CC, f_SW = 1MHz, unless otherwise specified. Limits applying over the full operating temperature
range are denoted by a •.
Symbol
Parameter
Conditions
•
Protections
T_SD
HY_TSD
T_{SD_DEGLITCH}
Thermal shutdown temperature
Thermal shutdown hysteresis
Thermal shutdown deglitch
V_OVBUCK
Threshold voltage for buck
overvoltage
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
Switching frequency
t_SS
Soft-start period
I_LIMx
Peak inductor current limit
R_{ON_HSx}
HS switch on-resistance
V_IN = 12V
R_{ON_LS1}
LS switch on-resistance of Buck1 V_IN = 12V
R_{ON_LS2/3}
LS switch on-resistance of Buck2/3 V_IN = 12V
I_Ox
Output current capability
Continuous loading⁽¹⁾
D_MAX
Maximum duty cycle
t_{ON MIN}
Minimum on time
Line regulation (ΔV_OX/ΔV_INX)
V_INX = 5.5 to 14V, I_OX = 1A
Load regulation (ΔV_OX/ΔI_OX)
I_O = 10 to 90%, I_O = MAX
V_IN = 12V
•
Output voltage accuracy
5.5V ≤ V_IN ≤ 14V
•
SYNC_FREQ
Synchronization frequency
SYNC_{D_MIN}
Synchronization signal
minimum duty cycle
•
SYNC_{D_MAX}
Synchronization signal
maximum duty cycle
•
NOTE:
1. Subject to thermal derating. Design must not exceed the package thermal rating.
Min
-1
-2
1.05
40
Typ
160
20
110
109
107
1
3
3.5
200
60
80
2
95
120
0.5
0.5
Normal
Normal
Max
1
2
60
Units
°C
°C
µs
%
%
MHz
ms
A
mΩ
mΩ
mΩ
A
%
ns
%V_O
%V_O/A
%
MHz
%
%
REV1A
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