MAX8513/MAX8514
Wide-Input, High-Frequency, Triple-Output Supplies
with Voltage Monitor and Power-On Reset
_______________________________________________________________________________________ 7
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
=
15.0kΩ, 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 V
DRV3P
128V
FB3P Regulation Voltage V
DRV3P
= 5V, I
DRV3P
= 1mA 0.780 0.820 V
FB3P to DRV3P Large-Signal
Transconductance
G
C3P
V
DRV3P
= 5V, I
DRV3P
= 0.5mA to 5mA 0.3 1.4 S
Feedback Input Bias Current V
FB3P
= 0.75V 100 nA
Driver Sink Current V
FB3P
= 0.75V DRV3P = 2.5V 15 mA
FB3P POR Threshold 0.690 0.742 V
OUT3N (NEGATIVE NPN LDO CONTROLLER) (MAX8514 ONLY)
SUP3N Operating Range (Note 1) 1.5 5.5 V
DRV3N Operating Range (Note 1)
V
SUP3N
- 21V
V
SUP3N
- 1.5V
V
SUP3N Supply Current
V
DRV3N
= 1.5V, V
SUP3N
= 3.5V,
I
DRV3N
= -1mA (source)
2mA
FB3N Regulation Voltage
V
DRV3N
= 1.5V, V
SUP3N
= 3.5V,
I
DRV3N
= -1mA (source)
-20 +10 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 V
FB3N
= -100mV 1500 nA
Driver Source Current
V
FB3N
= 200mV, V
DRV3N
= 0,
V
SUP3N
= 3.5V
13 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
= 10.7kΩ ±1% from FREQ to GND 1300 1500
R
FREQ
= 15.0kΩ ±1% from FREQ to GND 917 1070
Frequency f
S
R
FREQ
= 50.0kΩ ±1% from FREQ to GND 250 335
kHz
R
FREQ
= 10.7kΩ ±1% from FREQ to GND 77 91
R
FREQ
= 15.0kΩ ±1% from FREQ to GND 80 95
Maximum Duty Cycle
(Measured at DH Pin)
R
FREQ
= 50.0kΩ ±1% from FREQ to GND 93 99
%
Minimum On-Time
(Measured at DH Pin)
R
FREQ
= 10.7kΩ ±1% from FREQ to GND 62 ns
SYNC/EN Pulse Width Low or high (Note 1) 200 ns
SYNC/EN Frequency Range
SYNC/EN input frequency needs to be
within ±30% of the value set at the FREQ
pin (Note 1)
200 1850 kHz
(30 páginas)
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