Manual

MAX8710/MAX8711/MAX8712
Low-Cost Linear-Regulator
LCD Panel Power Supplies
4 _______________________________________________________________________________________
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 1µA
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
1kΩ
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 1kΩ
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