Rainbow Electronics MAX8758 - Manual (Page 3)

MAX8758
Step-Up Regulator with Switch Control and
Operational Amplifier for TFT LCD
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ELECTRICAL CHARACTERISTICS (continued)
(V IN = V SHDN = +3V, OUT = +10V, FREQ = GND, T A = 0°C to +85°C, unless otherwise noted. Typical values are at T
A = +25°C.)
PARAMETER CONDITIONS MIN TYP MAX UNITS
LX Leakage Current V LX = 13V 0.01 20 µA
LX Current Limit 65% duty cycle 2.0 2.5 3.0 A
Current-Sense Transresistance 0.19 0.3 0.40 V/A
SS Source Current 3.0 4.0 5.5 µA
POSITIVE GATE DRIVER TIMING AND CONTROL SWITCHES
CTL Input Low Voltage V IN = 1.8V to 5.5V 0.6 V
V IN = 1.8V to 2.4V 1.4
CTL Input High Voltage
V IN = 2.4V to 5.5V 2.0
V
CTL Input Leakage Current V CTL = 0 or V IN -1 +1 µA
GON rising, V MODE = 1.24V, V CTL = 0 to 3V step,
no load on GON
100
CTL-to-SRC Propagation Delay
GON falling, V MODE = 1.24V, V CTL = 3V to 0 step,
no load on GON
100
ns
SRC Input Voltage V DLP = 0, V IN = 3V 2500 Ω
SRC Input Current MODE = DLP = CTL = LDO 150 250 µA
DRN Input Current MODE = DLP = LDO, V DRN = 8V, V CTL = 0 150 250 µA
SRC-to-GON Switch On-Resistance DLP = CTL = LDO 15 30 Ω
DRN-to-GON Switch On-Resistance DLP = LDO, V CTL = 0 65 130 Ω
GON-to-PGND Switch On-Resistance V
DLP
= 0, V
IN
= 3V 2500 Ω
MODE Switch On-Resistance V DLP = 0, V IN = 3V 1000 Ω
MODE 1 Voltage Threshold MODE rising
0.9 x
V LDO
V
MODE Capacitor Charge Current
(MODE 2)
V MODE = 1.5V 40 50 62 µA
MODE 2 Switch Transition Voltage
Threshold
GON connected to DRN 2.3 2.5 2.7 V
MODE Current-Source Stop
Threshold
MODE rising 3.3 3.5 3.7 V
DLP Capacitor Charge Current During startup, V DLP = 1.0V 4 5 6 µA
DLP Turn-On Threshold 2.375 2.500 2.625 V
THR-to-GON Voltage Gain V GON = 12V, V THR = 1.2V 9.7 10.0 10.3 V/V
OPERATIONAL AMPLIFIER
SUPB Supply Range 4.5 13.0 V
SUPB Supply Current Buffer configuration, V POSB = 4V, no load 1.0 mA
Input Offset Voltage V NEGB , V POSB = V SUPB /2, T A = +25°C 12 mV
Input Bias Current V NEGB , V POSB = V SUPB /2 -50 +50 nA
Input Common-Mode Voltage Range 0 V SUPB V