Rainbow Electronics MAX8758 - Manual (Page 5)

PARAMETER CONDITIONS MIN TYP MAX UNITS
FREQ = GND 91 99
Oscillator Maximum Duty Cycle
FREQ = IN 88 96
%
FB Regulation Voltage 1.220 1.252 V
FB Transconductance ∆I = 5µA at COMP 75 280 µS
LX On-Resistance I LX = 200mA 200 m Ω
LX Current Limit 65% duty cycle 2.0 3.0 A
POSITIVE GATE DRIVER TIMING AND CONTROL SWITCHES
SRC Input Voltage Range 28 V
SRC Input Current MODE = DLP = CTL = LDO 250 µA
DRN Input Current MODE = DLP = LDO, V
DRN
= 8V, V
CTL
= 0 250 µA
SRC-to-GON Switch On-Resistance DLP = CTL = LDO 30 Ω
DRN-to-GON Switch On-Resistance DLP = LDO, V CTL = 0 130 Ω
THR-to-GON Voltage Gain V GON = 12V, V THR = 1.2V 9.7 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 18 mV
Input Common-Mode Voltage Range 0 V
SUPB
V
I OUTB = 100µA
V SUPB
- 15
Output Voltage Swing High
I OUTB = 5mA
V SUPB
- 150
mV
I OUTB = -100µA 15
Output Voltage Swing Low
I OUTB = -5mA 150
mV
OUTB shorted to V SUPB /2, sourcing 75
Short-Circuit Current
OUTB shorted to V
SUPB
/2, sinking 75
mA
MAX8758
Step-Up Regulator with Switch Control and
Operational Amplifier for TFT LCD
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICS (continued)
(V IN = V SHDN = +3V, OUT = +10V, FREQ = GND, T A = -40°C to +85°C, unless otherwise noted.) (Note 2)
Note 1: OUT and SUP can operate down to 4.5V. LDO will be out of regulation, but IC will function correctly.
Note 2: -40°C specs are guaranteed by design, not production tested.