Manual

MAX8710/MAX8711/MAX8712
Low-Cost Linear-Regulator
LCD Panel Power Supplies
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1. V
IN
= V
INL
= V
SUPCP
= 12V, V
OUTL
= V
SUPB
= 10V, V
SRC
= 27V, T
A
= -40°C to +100°C, unless otherwise noted.)
(Note 1)
PARAMETER CONDITIONS
MIN
TYP
MAX
UNITS
REF Output Voltage -10µA < I
REF
< 1mA (excluding internal load) 4.9 5.1 V
SUPCP Input Supply Range 2.7
13.2
V
Charge-Pump Regulators Operating
Frequency
1200 1850
kHz
LINEAR REGULATOR
Dropout Voltage I
OUTL
= 50mA 300 mV
FBL Regulation Voltage I
OUTL
= 50mA
2.455 2.545
V
FBL Fault Trip Level Falling edge
1.96 2.04
V
FBL Line-Regulation Error
V
INL
= V
IN
= 10.8V~13.2V, V
OUTL
= 10V,
I
OUTL
= 50mA
15 mV
Maximum OUTL Current V
FBL
= 2.4V
300
mA
OUTL Load Regulation V
IN
= 12V, 5mA < I
OUTL
< 300mA 2 %
OPERATIONAL AMPLIFIER
SUPB Supply Current Buffer configuration, V
POSB
= 4V, no load 1.0 mA
Input Offset Voltage (V
NEGB
, V
POSB
) = V
SUPB
/ 2 14 mV
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
Short to V
SUPB
/ 2, sourcing 50
Short-Circuit Current
Short to V
SUPB
/ 2, sinking 50
mA
POSITIVE CHARGE-PUMP REGULATOR
FBP Regulation Voltage I
GON
= 10mA
2.425 2.575
V
FBP Line-Regulation Error
V
OUTL
(V
SUPCP
, MAX8710) = 10.8V~13.2V,
V
GON
= 27V, I
GON
= 20mA
25 mV
FBP Input Bias Current V
FBP
= 3V -50 +50 nA
DRVP P-Channel On-Resistance 30 Ω
V
FBP
= 2.4V 12 Ω
DRVP N-Channel On-Resistance
V
FBP
= 2.6V 20 kΩ
NEGATIVE CHARGE-PUMP REGULATOR
FBN Regulation Voltage I
GOFF
= 10mA
200
300 mV
FBN Line Regulation
V
OUTL
(V
SUPCP
, MAX8710) = 10.8V~13.2V,
V
GOFF
= -6V, I
GOFF
= -50mA
25 mV
DRVN P-Channel On-Resistance 15 Ω
V
FBN
= 350mV 6 Ω
DRVN N-Channel On-Resistance
V
FBN
= 150mV 20 kΩ