Electrical characteristics (continued) – Rainbow Electronics MAX8712 User Manual
Page 3
MAX8710/MAX8711/MAX8712
Low-Cost Linear-Regulator
LCD Panel Power Supplies
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1. V
IN
= V
INL
= V
SUPCP
= 12V, V
OUTL
= V
SUPB
= 10V, V
SRC
= 27V,
T
A
= 0°C to +85°C. Typical values are at T
A
=
+25°C, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Common-Mode Input Range
V
NEGB
, V
POSB
0
V
SUPB
V
Common-Mode Rejection Ratio
0
≤
(V
NEGB
, V
POSB
) < V
SUPB
50
90
dB
Open-Loop Gain
125
dB
I
OUTB
= 100µA
V
SUPB
-
15
V
SUPB
- 2
Output Voltage Swing High
I
OUTB
= 5mA
V
SUPB
-
150
V
SUPB
- 80
mV
I
OUTB
= -100µA
2
15
Output Voltage Swing Low
I
OUTB
= -5mA
80
150
mV
Short to V
SUPB
/ 2, sourcing
50
150
Short-Circuit Current
Short to V
SUPB
/ 2, sinking
50
140
mA
Output Current
Buffer configuration, V
POSB
= 4V,
V
OUTB
error <
±
10mV
±40
mA
Power-Supply Rejection Ratio
6V
≤
V
SUPB
≤
13.2V, DC (V
NEGB
, V
POSB
) = V
SUPB
/ 2
60
100
dB
Slew Rate
12
V/µs
-3dB Bandwidth
Buffer configuration, R
L
= 10k
Ω
, C
L
= 10pF
12
MHz
Gain-Bandwidth Product
Buffer configuration, R
L
= 10k
Ω
, C
L
= 10pF
8
MHz
POSITIVE CHARGE-PUMP REGULATOR
FBP Regulation Voltage
I
GON
= 10mA
2.425
2.500
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
= 2.5V
-50
+50
nA
DRVP P-Channel On-Resistance
15
30
Ω
V
FBP
= 2.4V
6
12
Ω
DRVP N-Channel On-Resistance
V
FBP
= 2.6V
20
k
Ω
FBP Fault Trip Level
Falling edge
1.92
2.00
2.08
V
Positive Charge-Pump Soft-Start
Period
2
12
oscillator clock cycles in a 7-bit DAC
2.73
ms
NEGATIVE CHARGE-PUMP REGULATOR
FBN Regulation Voltage
I
GOFF
= 10mA
200
250
300
mV
FBN Input Bias Current
V
FBN
= 250mV
-50
+50
nA
FBN Line Regulation
V
OUTL
(V
SUPCP
, MAX8710)
= 10.8V~13.2V,
V
VGOFF
= -6V, I
GOFF
= -50mA
25
mV
DRVN P-Channel On-Resistance
7.5
15
Ω
V
FBN
= 350mV
3
6
Ω
DRVN N-Channel On-Resistance
V
FBN
= 150mV
20
k
Ω
FBN Fault Trip Level
Rising edge
700
mV
Negative Charge-Pump Soft-Start
Period
2
12
oscillator clock cycles in a 7-bit DAC
2.73
ms