Junction Temperature .....................................................+160NC
Storage Temperature Range............................ -65NC to +165NC
Lead Temperature (soldering, 10s) ................................+300NC
Soldering Temperature (reflow) ......................................+260NC
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.
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V
INVL
= V
IN2
= 12V, V
VOP
= V
VREF_I
= 15V,
T
A
= 0°C to +85°C.
Typical values are at T
A
= +25NC, unless oth-
erwise noted.)
PARAMETER
GENERAL
INVL, IN2 Input Voltage Range
INVL + IN2 Quiescent Current
INVL + IN2 Standby Current
SMPS Operating Frequency
INVL Undervoltage-Lockout
Threshold
VL REGULATOR
VL Output Voltage
VL Undervoltage-Lockout
Threshold
REFERENCE
REF Output Voltage
REF Load Regulation
REF Sink Current
REF Undervoltage-Lockout
Threshold
No external load
0V < I
LOAD
< 50FA
In regulation
Rising edge, 250mV typical hysteresis
10
1.0
1.2
1.2375
1.250
1.2625
5
V
mV
FA
V
I
VL
= 25mA, V
FB1
= V
FB2
= V
FBP
= 1.1V, V
FBN
= 0.4V
(all regulators switching)
VL rising, 50mV typical hysteresis
4.85
3.5
5
3.9
5.15
4.3
V
V
Only LX2 switching (V
FB1
= V
FBP
= 1.5V, V
FBN
= 0V)
EN = VL, FSEL = high
LX2 not switching (V
FB1
= V
FB2
= V
FBP
= 1.5V,
V
FBN
= 0V), EN = VL, FSEL = high
FSEL = INVL or high impedance
FSEL = GND
INVL rising, 150mV typical hysteresis
630
420
6.0
8
10
24
750
500
7.0
16.5
20
5
870
580
8.0
V
mA
mA
kHz
V
CONDITIONS
MIN
TYP
MAX
UNITS
2
Maxim Integrated
MAX17126B
Multi-Output Power Supplies with VCOM Amplifier
and High-Voltage Gamma Reference for LCD TVs
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
INVL
= V
IN2
= 12V, V
VOP
= V
VREF_I
= 15V,
T
A
= 0°C to +85°C.
Typical values are at T
A
= +25NC, unless oth-
erwise noted.)
PARAMETER
STEP-DOWN REGULATOR
OUT Voltage in Fixed Mode
FB2 Voltage in Adjustable
Mode
FB2 Adjustable Mode Threshold
Voltage
Output Voltage Adjust Range
FB2 Fault-Trip Level
FB2 Input Leakage Current
DC Load Regulation
DC Line Regulation
LX2-to-IN2 nMOS Switch
On-Resistance
LX2-to-GND2 nMOS Switch
On-Resistance
BST-to-VL pMOS Switch
On-Resistance
Low-Frequency Operation
OUT Threshold
Low-Frequency Operation
Switching Frequency
LX2 Positive Current Limit
Soft-Start Ramp Time
Maximum Duty Factor
Minimum Duty Factor
Char/Design Limit Only
STEP-UP REGULATOR
Output Voltage Range
Oscillator Maximum Duty Cycle
FB1 Regulation Voltage
FB1 Fault Trip Level
FB1 Load Regulation
FB1 Line Regulation
FB1 Input Bias Current
FB1 Transconductance
FB1 Voltage Gain
LX1 Leakage Current
FB1 = COMP, C
COMP
= 1nF
Falling edge
0V < I
LOAD
< full
10.8V < V
IN
< 13.2V
V
FB1
= 1.25V
DI
=
Q2.5FA
at COMP, FB1 = COMP
FB1 to COMP
V
FB1
= 1.5V, V
LX1
= 20V
30
150
VIN
70
1.2375
0.96
78
1.25
1.0
0.5
0.08
125
320
1400
10
40
200
560
20
85
1.2625
1.04
V
%
V
V
%
%/V
nA
FS
V/V
FA
LX2 only
FSEL = INVL
FSEL = GND
MAX17126
Zero to full limit
70
2.50
6
40
Falling edge
V
FB2
= 1.25V
0V < I
LOAD
< 2A
No load, 10.8V < V
IN2
< 13.2V
FB2 = GND, no load
(Note 1)
V
OUT
= 2.5V, no load
(Note 1)
Dual Mode™ comparator
0°C < T
A
= +85°C
T
A
= +25°C
0°C < T
A
= +85°C
T
A
= +25°C
3.25
3.267
1.23
1.2375
0.10
1.5
0.96
50
1.0
125
0.5
0.1
100
10
30
0.8
125
83
3.20
3
78
85
10
3.90
200
23
110
1.25
3.3
3.35
3.333
1.27
1.2625
0.20
5
1.04
200
V
V
V
V
V
nA
%
%/V
mI
I
I
V
kHz
A
ms
%
%
CONDITIONS
MIN
TYP
MAX
UNITS
0.15
Dual Mode is a trademark of Maxim Integrated Products, Inc.
Maxim Integrated
3
MAX17126B
Multi-Output Power Supplies with VCOM Amplifier
and High-Voltage Gamma Reference for LCD TVs
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
INVL
= V
IN2
= 12V, V
VOP
= V
VREF_I
= 15V,
T
A
= 0°C to +85°C.
Typical values are at T
A
= +25NC, unless oth-
erwise noted.)
PARAMETER
LX1 Current Limit
CLIM Voltage
Current-Sense Transresistance
LX1 On-Resistance
Soft-Start Period
SS Charge Current
GD_I Input Supply Range
GD_I Input Supply Current
GD_I Overvoltage Threshold
FBP Regulation Voltage
FBP Line Regulation Error
FBP Input Bias Current
DRVP p-Channel MOSFET
On-Resistance
DRVP n-Channel MOSFET
On-Resistance
FBP Fault Trip Level
Positive Charge-Pump
Soft-Start Period
V
SUP
= 11V to 16V, not in dropout
V
FBP
= 1.5V, T
A
= +25°C
-50
1.5
1
Falling edge
7-bit voltage ramp with filtering to prevent high peak
currents 500kHz frequency
750kHz frequency
V
REF
- V
FBN
V
FBN
= 0mV, T
A
= +25°C
V
IN2
= 11V to 16V, not in dropout
1.5
1
Rising edge
7-bit voltage ramp with filtering to prevent high peak
currents 500kHz frequency
750kHz frequency
EN = GND
EN = VL
EN = VL, V
GD_I
- V
GD
5
5
8
720
800
3
2
25
10
6
50
15
7
20
I
FA
V
V
0.99
-50
0.96
1.0
4
3
1.00
1.01
+50
0.2
3
2
880
V
FBP
= 1.5V (not switching)
GD_I rising, 250mV typical hysteresis (Note 2)
20.1
1.2375
C
SS
< 200pF
V
SS
= 1.2V
4
8.0
0.15
21
1.25
CONDITIONS
V
FB1
= 1.1V, R
CLIM
= unconnected
V
FB1
= 1.1V, with R
CLIM
at CLIM pin
R
CLIM
= 60.5kI
MIN
3.0
-20%
0.56
0.19
TYP
3.5
3.5 -
(68k/
R
CLIM
)
0.625
0.21
100
16
5
6
20
0.3
22
1.2625
0.2
+50
3
2
1.04
MAX
4.2
+20%
0.69
0.25
185
A
V
V/A
mI
ms
FA
V
mA
V
V
%/V
nA
I
I
V
ms
ms
V
nA
%/V
I
I
mV
ms
UNITS
POSITIVE CHARGE-PUMP REGULATORS
NEGATIVE CHARGE-PUMP REGULATORS
FBN Regulation Voltage
FBN Input Bias Current
FBN Line Regulation Error
DRVN P
CH
On-Resistance
DRVN N
CH
On-Resistance
FBN Fault Trip Level
Negative Charge-Pump Soft-
Start Period
AVDD SWITCH GATE CONTROL
GD to GD_I Pullup Resistance
GD Output Sink Current
GD Done Threshold
OPERATIONAL AMPLIFIERS
VOP Supply Range
4
Maxim Integrated
MAX17126B
Multi-Output Power Supplies with VCOM Amplifier
and High-Voltage Gamma Reference for LCD TVs
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
INVL
= V
IN2
= 12V, V
VOP
= V
VREF_I
= 15V,
T
A
= 0°C to +85°C.
Typical values are at T
A
= +25NC, unless oth-
erwise noted.)
PARAMETER
VOP Overvoltage Fault
Threshold
VOP Supply Current
Input Offset Voltage
Input Bias Current
Input Common-Mode
Voltage Range
Input Common-Mode
Rejection Ratio
Output Voltage Swing High
Output Voltage Swing Low
Large-Signal Voltage Gain
Slew Rate
-3dB Bandwidth
Short-Circuit Current
2V < (V
OPP
, V
OPN
) < (V
VOP
- 2V)
I
OPO
= 25mA
I
OPO
= -25mA
2V < (V
OPP
, V
OPN
) < (V
OP
- 2V)
2V < (V
OPP
, V
OPN
) < (V
OP
- 2V)
2V < (V
OPP
, V
OPN
) < (V
OP
- 2V)
Short to V
VOP
/2, sourcing
Short to V
VOP
/2, sinking
200
200
35
150
V
DLY1
= 2V, GVOFF = VL
V
VGH
- V
VGHM
> 5V
V
DLY1
= 2V, GVOFF = GND
V
VGHM
- V
DRN
> 5V
DLY1 = GND
75
1.0
150
5
390
20
200
2.5
4.0
0.6
1.6
V
GVOFF
= 0V or VL, T
A
= +25°C
1kI from DRN to CPGND, V
GVOFF
= 0V to VL step, no
load on VGHM, measured from GVOFF = 2V to VGHM
= 20%
1kI from DRN to CPGND, V
GVOFF
= VL to 0V step, no
load on VGHM, DRN falling, no load on DRN and VGHM,
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