Datasheet

MAX1513/MAX1514
TFT-LCD Power-Supply Controllers
6 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
IN
= 3V, V
SUPB
= 10V, SDFR = IN, C
REF
= 0.22µF, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS MIN TYP MAX
UNITS
LOGIC LINEAR-REGULATOR CONTROLLER (REG L)
FBL Regulation Voltage V
FBL
I
DRVL
= 1mA
1.225 1.275
V
FBL Input Bias Current V
FBL
= 1.5V -250 +250 nA
FBL Effective Load-Regulation
Error (Transconductance)
V
DRVL
= 3V, I
DRVL
= 0.5mA to 10mA -2 %
DRVL Sink Current I
FBL
V
FBL
= 1.1V, V
DRVL
= V
IN
20 mA
GATE-OFF LINEAR-REGULATOR CONTROLLER (REG N)
FBN Regulation Voltage V
FBN
I
DRVN
= 0.2mA 220 280 mV
FBN Input Bias Current V
FBN
= 0V -250 +250 nA
FBN Effective Load-Regulation
Error (Transconductance)
V
DRVN
= -10V, I
DRVN
= 0.1mA to 2mA 25 mV
DRVN Source Current I
FBN
V
FBN
= 0.3V, V
DRVN
= -10V 5 mA
BUFFER AMPLIFIER
SUPB Supply Range
V
SUPB
4.5 13.0 V
SUPB Supply Current I
SUPB
No load, V
FBPB
= 4V 1.1 mA
FBPB Input Offset Voltage V
OS
V
FBPB
= V
SUPB
/ 2 12 mV
FBPB Input Bias Current I
BIAS
V
FBPB
= V
SUPB
/ 2 50 nA
FBPB Input Common-Mode
Range
V
CM
0
V
SUPB
V
Output-Voltage-Swing High V
OH
I
OUTB
= 5mA V
SUPB
- 150 mV
Output-Voltage-Swing Low V
OL
I
OUTB
= -5mA 150 mV
CONTROL INPUTS AND OUTPUTS
SDFR = IN (1.5MHz operation) 0.9 × V
IN
SDFR = unconnected (430kHz operation) 0.69 × V
IN
0.77 × V
IN
SDFR = REF (750kHz operation) 1.00 1.35
SDFR Input Level
SDFR = GND (LCD shutdown) 0.5
V
SDFR = IN +3.0
SDFR = REF -3.0
SDFR Input Current
SDFR = GND -3.0
µA
Note 1: Specifications to -40°C are guaranteed by design, not production tested.