Rainbow Electronics MAX8712 - Manual (Page 4)

MAX8710/MAX8711/MAX8712
Low-Cost Linear-Regulator
LCD Panel Power Supplies
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ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1. V IN = V INL = V SUPCP = 12V, V OUTL = V SUPB = 10V, V SRC = 27V, T A = 0°C to +85°C. Typical values are at T
A =
+25°C, unless otherwise noted.)
PARAMETER CONDITIONS MIN TYP MAX UNITS
SEQUENCE CONTROL
SHDN Input Low Voltage 0.6 V
SHDN Input High Voltage 2.0 V
SHDN Input Current 1 µA
DLP Capacitor Charge Current During startup, V DLP = 1.0V 4 5 6 µA
DLP Turn-On Threshold 2.375 2.5 2.625 V
SHDN = low or fault tripped; DLP, FBP, FBN to GND 10
Ω
Pin Discharge Switch On-Resistance SHDN = low or fault tripped;
MODE, OUTL, GON, OUTB to GND
1 k
Ω
POSITIVE GATE-DRIVER TIMING AND CONTROL SWITCHES
CTL Input Low Voltage 0.6 V
CTL Input High Voltage 2.0 V
CTL Input Leakage Current -1 +1 µA
CTL to GON Rising Propagation
Delay
V MODE = V REF , 1.5nF from GON to GND, V CTL = 0V to
3V step, no load on GON, measured from V CTL = 1.5V
to GON = 20%
100 ns
CTL to GON Falling Propagation
Delay
V MODE = V REF , 1.5nF from GON to GND, V CTL = 3V to
0V step, DRN falling, no load on DRN and GON,
measured from V
CTL = 1.5V to GON = 80%
100 ns
SRC Input Voltage Range 28 V
SRC Input Current V MODE = V REF , VDLP = 3V, CTL = high 150 250 µA
DRN Input Current V MODE = V REF , VDRN = 8V, VDLP = 3V, VCTL = 0V 26 40 µA
SRC Switch On-Resistance V MODE = V REF , VDLP = 3V, CTL = high 15 30 Ω
DRN Switch On-Resistance V MODE = V REF , VDLP = 3V, VCTL = 0V 30
Ω
MODE Switch On-Resistance 1 k
Ω
Mode 2 MODE Capacitor Charge
Current
V
MODE
< MODE current-source stop voltage threshold 42 50 64 µA
MODE Voltage Threshold for
Enabling DRN Switch Control in
Mode 2
2.3 2.5 2.7 V
MODE Current-Source Stop Voltage
Threshold
V MODE rising edge 3.3 3.5 3.7 V
THR to GON Voltage Gain 9.4 10 10.6 V/V
GON Falling Slew Rate 13.5 V/µs