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Wide-Input, High-Frequency, Triple-Output Supplies
with Voltage Monitor and Power-On Reset
ELECTRICAL CHARACTERISTICS (continued)
(V IN = V LX = V SUP2 = 12V, V PVL = V BST - V LX = V DRV3P = 5V, V SUP3N = 3.3V, V DRV3N = -5V, C VL = 4.7μF, C REF = 0.22μF, R FREQ =
15.0k ? , T A = 0°C to +85°C , unless otherwise noted. Typical values are at T A = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SEQ, PFI, PFO , POR
SEQ Input-Voltage High
SEQ Input-Voltage Low
2.4
0.8
V
V
SEQ Input Current
V SEQ = 0 to V VL
1
10
μA
POR Output-Voltage Low
V FB1 , V FB2 , V FB3P ,
V FB3N , out-of-regulation
I POR = 1.6mA
I POR = 0.1mA,
V IN = 1.0V
10
20
200
200
mV
POR Output Leakage Current
V FB1 , V FB2 , and V FB3P or V FB3N , in-
regulation
0.001
1
μA
POR Power-Ready Delay Time
PFI Input Threshold
PFI Input Bias Current
From V FB1 , V FB2 , and V FB3P or V FB3N , in-
regulation to POR = high impedance
Falling, V HYST = 20mV
V PFI = 1.0V
140
1.20
315
1.22
0.1
560
1.25
100
ms
V
nA
I PFO = 1.6mA
20
200
PFO Output-Voltage Low
PFO Output Leakage Current
PFI = 1.1V
PFI = 1.4V, PFO = 5V
I PFO = 0.1mA,
V IN = 1.0V
10
0.001
200
1
mV
μA
THERMAL PROTECTION
Thermal Shutdown
Thermal-Shutdown Hysteresis
Junction temperature rising
+170
25
°C
°C
ELECTRICAL CHARACTERISTICS
(V IN = V LX = V SUP2 = 12V, V PVL = V BST - V LX = V DRV3P = 5V, V SUP3N = 3.3V, V DRV3N = -5V, C VL = 4.7μF, C REF = 0.22μF, R FREQ =
15.0k ? , T A = -40°C to +125°C (Note 2), unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
MAX
UNITS
GENERAL
IN Operating Range
IN = VL
5.5
4.5
28.0
5.5
V
V FB1 = 1.3V, V FB2 = V FB3 = 1.0V, does not
IN Supply Current
include switching current to PVL and BST,
3.2
mA
SYNC/EN = VL
IN Shutdown Current
V SYNC/EN = 0, R FREQ = 50k ?
300
μA
VL REGULATOR
VL Output Voltage
VL Dropout Voltage
VL Undervoltage Threshold
V IN = 6V to 28V, I VL = 0.1mA to 40mA
From IN to VL, V IN = 5V, I VL = 40mA
VL rising, V HYST = 675mV (typ)
4.75
3.6
5.25
610
4.2
V
mV
V
_______________________________________________________________________________________
5
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