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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 = -40°C to +125°C (Note 2), unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
MAX
UNITS
OUT3P (POSITIVE PNP LDO) (MAX8513 ONLY)
DRV3P Operating Range
FB3P Regulation Voltage
V DRV3P
V DRV3P = 5V, I DRV3P = 1mA
1
0.780
28
0.820
V
V
FB3P to DRV3P Large-Signal
Transconductance
Feedback Input Bias Current
Driver Sink Current
FB3P POR Threshold
G C3P
V DRV3P = 5V, I DRV3P = 0.5mA to 5mA
V FB3P = 0.75V
V FB3P = 0.75V
DRV3P = 2.5V
0.3
15
0.690
1.4
100
0.742
S
nA
mA
V
OUT3N (NEGATIVE NPN LDO CONTROLLER) (MAX8514 ONLY)
SUP3N Operating Range
DRV3N Operating Range
SUP3N Supply Current
FB3N Regulation Voltage
(Note 1)
(Note 1)
V DRV3N = 1.5V, V SUP3N = 3.5V,
I DRV3N = -1mA (source)
V DRV3N = 1.5V, V SUP3N = 3.5V,
I DRV3N = -1mA (source)
1.5
V SUP3N
- 21V
-20
5.5
V SUP3N
- 1.5V
2
+10
V
V
mA
mV
FB3N to DRV3N Large-Signal
Transconductance
G C3N
V DRV3N = 0, I DRV3N = -0.5mA to -5mA
(source)
0.225
0.550
S
Feedback Input Bias Current
Driver Source Current
V FB3N = -100mV
V FB3N = 200mV, V DRV3N = 0,
V SUP3N = 3.5V
13
1500
nA
mA
FB3N POR Threshold
450
550
mV
REFERENCE
REF Output Voltage
V REF
-2μA < I REF < +50μA
1.22
1.27
V
OSCILLATOR
R FREQ = 10.7k ? ±1% from FREQ to GND
1300
1500
Frequency
f S
R FREQ = 15.0k ? ±1% from FREQ to GND
917
1070
kHz
R FREQ = 50.0k ? ±1% from FREQ to GND
250
335
Maximum Duty Cycle
(Measured at DH Pin)
R FREQ = 10.7k ? ±1% from FREQ to GND
R FREQ = 15.0k ? ±1% from FREQ to GND
R FREQ = 50.0k ? ±1% from FREQ to GND
77
80
93
91
95
99
%
Minimum On-Time
(Measured at DH Pin)
SYNC/EN Pulse Width
R FREQ = 10.7k ? ±1% from FREQ to GND
Low or high (Note 1)
200
62
ns
ns
SYNC/EN input frequency needs to be
SYNC/EN Frequency Range
within ±30% of the value set at the FREQ
200
1850
kHz
pin (Note 1)
_______________________________________________________________________________________
7
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