Datasheet

Step-Up, Step-Down Regulator, Gate-On Charge Pump,
and Boost-Buck Regulator for TV TFT LCD Display
MAX17122
8 ______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
IN
= V
IN2
= V
IN3
= 12V, T
A
= -40°C to +85°C.) (Note 2)
Note 1: When the inductor is in continuous conduction (EN2 = VL or heavy load), the output voltage has a DC regulation level
lower than the error-comparator threshold by 50% of the output-voltage ripple. In discontinuous conduction (light load),
the step-down regulator’s output voltage has a DC regulation level higher than the error-comparator threshold by up to
50% of the output-voltage ripple.
Note 2: Specifications to -40NC are guaranteed by design, not production tested.
PARAMETER CONDITIONS MIN TYP MAX UNITS
POWER-GOOD BLOCKS
FB2 Power-Good Threshold FB2 rising 0.975 1.025 V
RESET Output Low Voltage I
RESET
= 1mA 0.4 V
RESET Leakage Current V
RESET
= 3V 1
FA
FBP Power-Good Threshold FBP rising 1.1 1.2 V
GPGD Output Low Voltage I
GPGD
= 1mA 0.4 V
GPGD Leakage Current V
GPGD
= 3V 1
FA
GATE FUNCTION
GATE-Drive Voltage V
IN2
- V
GATE
, GATE enabled 5.0 5.65 V
HVS BLOCK
HVS Input Low Voltage 0.6 V
HVS Input High Voltage 1.85 V
SEQUENCE CONTROL
EN1, EN2, DLY1, DLY2, DEL
Charge Current
Measured at 1V 6 11
FA
EN1, EN2, DLY1, DLY2, DEL
Turn-On Threshold
1.30 V