Datasheet
MAX1513/MAX1514
TFT-LCD Power-Supply Controllers
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
FB, FBP, FBN, FBG, FBL, IN, CS+,
CS-,
SDFR to GND ...............................................-0.3V to +6V
DEL, GATE, REF to GND .............................-0.3V to (V
IN
+ 0.3V)
SUPB to GND .........................................................-0.3V to +14V
OUTB, FBPB to GND ..............................-0.3V to (V
SUPB
+ 0.3V)
DRVP, DRVG, DRVL to GND ..................................-0.3V to +30V
DRVN to GND .....................................(V
IN
- 28V) to (V
IN
+ 0.3V)
OUTB Continuous Output Current ....................................±75mA
Continuous Power Dissipation (T
A
= +70°C)
20-Pin TQFN (derate 16.9mW/°C above +70°C) .......1349mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V
IN
= 3V, V
SUPB
= 10V, SDFR = IN, C
REF
= 0.22µF, T
A
= 0°C to +85°C. Typical values are at T
A
= +25°C, unless
otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS MIN
TYP MAX
UNITS
IN Supply Range V
IN
2.7 5.5 V
V
IN
rising 2.5 2.7 2.9
IN Undervoltage-Lockout
Threshold
V
UVLO
350mV typical hysteresis
V
IN
falling 2.2
2.35
2.5
V
IN Quiescent Current I
IN
V
FB
= V
FBP
= V
FBL
= V
FBG
= 1.5V, V
FBN
= 0
1.25 mA
IN Shutdown Current V
SDFR
= 0, V
FBL
= 1.5V 150 µA
REF Output Voltage -2µA < I
REF
< 100µA, 2.7V < V
IN
< 5.5V
1.231 1.250 1.269
V
Temperature rising
+160
Thermal Shutdown
Hysteresis 15
°C
Duration to Trigger Fault Latch
43.6
ms
MAIN STEP-UP CONTROLLER
SDFR = IN
1.275 1.500 1.725
SDFR = REF 0.60
0.75
0.90 Operating Frequency f
OSC
SDFR = unconnected
0.43
MHz
Oscillator Maximum Duty Cycle
80 85 90 %
FB Regulation Voltage V
FB
V
CS+
- V
CS-
= 0
1.237 1.25 1.263
V
FB Fault Trip Level V
FB
falling 0.96
1.00
1.04 V
FB Load Regulation 0 < (V
CS+
- V
CS-
) < 50mV -1 %
FB Line Regulation V
IN
= 2.7V to 5.5V 0.1 0.2
% / V
FB Input Bias Current V
FB
= 1.5V
-100
+100
nA
CS+ Input Current 2.2V < V
CS+
< 6V 90 µA
CS- Input Current 2.2V < V
CS-
< 6V -1 +1 µA
Current-Limit Threshold V
CS+
- V
CS-
, 2.2V < V
CS+
< 6V 100 125 150 mV
Gate-Drive Output High or low 3 5 Ω
Soft-Start Period t
SS
2.7 ms
Soft-Start Step Size V
REF
/ 128 V
GATE-ON LINEAR-REGULATOR CONTROLLER (REG P)
FBP Regulation Voltage V
FBP
I
DRVP
= 50µA
1.225 1.250 1.275
V
FBP Fault Trip Level V
FBP
falling 0.96
1.00
1.04 V
FBP Input Bias Current V
FBP
= 1.5V
-250
+250
nA