MAX8513 Datasheet, PDF (7/35 Pages) Maxim Integrated Products – Wide-Input, High-Frequency, Triple-Output Supplies with Voltage Monitor and Power-On Reset

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 =
15.0kΩ, 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
FB3P Regulation Voltage
V_DRV3P
V_DRV3P = 5V, I_DRV3P = 1mA
1
0.780
28
V
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
Driver Sink Current
V_FB3P = 0.75V
FB3P POR Threshold
OUT3N (NEGATIVE NPN LDO CONTROLLER) (MAX8514 ONLY)
SUP3N Operating Range
(Note 1)
DRV3P = 2.5V
15
0.690
1.5
100
nA
mA
0.742
V
5.5
V
DRV3N Operating Range
(Note 1)
V_SUP3N
- 21V
V_SUP3N
V
- 1.5V
SUP3N Supply Current
V_DRV3N = 1.5V, V_SUP3N = 3.5V,
I_DRV3N = -1mA (source)
2
mA
FB3N Regulation Voltage
V_DRV3N = 1.5V, V_SUP3N = 3.5V,
-20
I_DRV3N = -1mA (source)
+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
Driver Source Current
FB3N POR Threshold
REFERENCE
REF Output Voltage
OSCILLATOR
Frequency
Maximum Duty Cycle
(Measured at DH Pin)
Minimum On-Time
(Measured at DH Pin)
V_FB3N = -100mV
V_FB3N = 200mV, V_DRV3N = 0,
V_SUP3N = 3.5V
13
450
V_REF -2µA < I_REF < +50µA
1.22
R_FREQ = 10.7kΩ ±1% from FREQ to GND 1300
f_S
R_FREQ = 15.0kΩ ±1% from FREQ to GND 917
R_FREQ = 50.0kΩ ±1% from FREQ to GND 250
R_FREQ = 10.7kΩ ±1% from FREQ to GND
77
R_FREQ = 15.0kΩ ±1% from FREQ to GND
80
R_FREQ = 50.0kΩ ±1% from FREQ to GND
93
R_FREQ = 10.7kΩ ±1% from FREQ to GND
1500
nA
mA
550
mV
1.27
V
1500
1070
kHz
335
91
95
%
99
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
200
pin (Note 1)
1850
kHz
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