Electrical characteristics – Rainbow Electronics MAX8712 User Manual
Page 5
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
k
Ω
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
k
Ω