Operating Temperature Range ......................... -40°C to +105°C
Junction Temperature ......................................................+150°C
Storage Temperature Range ............................ -65°C to +150°C
Lead Temperature (soldering, 10s) ................................. +300°C
Soldering Temperature (reflow) ......................................... 260°C
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.
Package Thermal Characteristics
(Note 1)
TQFN
Junction-to-Ambient Thermal Resistance (θ
JA
) ..........29°C/W
Junction-to-Case Thermal Resistance (θ
JC
) ..............1.7°C/W
Note 1:
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to
www.maximintegrated.com/thermal-tutorial.
Electrical Characteristics
PARAMETER
INPUT SUPPLY
IN Voltage Range
IN UVLO Threshold
IN UVLO Hysteresis
IN Quiescent Current
IN Quiescent Current
REFERENCE
Reference Output Voltage
Reference UVLO Threshold
Reference UVLO Hysteresis
Reference Load Regulation
Reference Line Regulation
(V
IN
= 3.6V, V
BATT
= 12V, Typical operating circuit as
Figure 5,
= -40°C to +105°C, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 2)
SYMBOL
CONDITIONS
MIN
2.7
Rising
V
EN
= V
GND
, V
IN
= 3.6V
V
EN
= V
IN
= 3.6V, no switching
No load
REF rising
0 < I
REF
< 100μA
2.7V < V
IN
< 5.5V
V
HVINP
V
POS
V
FBP
= V
GND
, V
IN
= 2.7V to
5.5V, 1mA < I
POS
< 100mA
Dither disabled (test mode
only), OTP options for 400kHz
and 2.1MHz
V
IN
5
6.37
850
6.5
1000
1.234
2.45
2.55
100
4
2.2
1.25
1
100
10
2
20
5
15
15
6.63
1150
1.266
1.2
10
TYP
MAX
5.5
2.65
UNITS
V
V
mV
μA
mA
V
V
mV
mV
mV
BOOST REGULATOR
Output Voltage Range
POS Output Regulation
Operating Frequency
V
V
kHz
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Maxim Integrated
│
2
MAX20070
Integrated TFT Power Supply and
LED Backlight Driver
Electrical Characteristics (continued)
PARAMETER
Frequency Dither
Oscillator Maximum Duty Cycle
FBP Regulation Voltage
FBP Load Regulation
FBP Line Regulation
Maximum Load Current
FBP Input Bias Current
FBP Internal-Divider Enable
Threshold
LXP On-Resistance
LXP Leakage Current
LXP Current Limit
Soft-Start Period
INVERTING REGULATOR
INN Voltage Range
INN Quiescent Current
INN Quiescent Current
Operating Frequency
Frequency Dither
Oscillator Maximum Duty Cycle
SYMBOL
(V
IN
= 3.6V, V
BATT
= 12V, Typical operating circuit as
Figure 5,
= -40°C to +105°C, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 2)
CONDITIONS
MIN
90
1.236
1mA < I
POS
< 100mA
V
IN
= 2.7V to 5.5V
V
IN
= 2.7V, V
POS
= 15V
V
IN
= 3V, V
POS
= 15V
V
FBP
= 1.25V, T
A
= +25°C
FBP rising, hysteresis = 10mV
I
LXP
= 0.1A
EN = GND, V
LXP
= 15V
Duty cycle = 80%
I
LIM
ramp
2.7
EN = GND, V
INN
= 3.6V
V
EN
= V
INN
= 3.6V
Dither disabled (test mode only)
850
90
V
INN
= 2.7V to 5.5V, V
POS
=
6.5V, 1mA < I
NEG
< 100mA,
I
POS
= no load, T
A
= 0°C to
+105°C
V
INN
= 2.7V to 5.5V, V
POS
=
6.5V, 1mA < I
NEG
< 100mA,
I
POS
= no load, T
A
= -40°C to
+105°C
V
INN
= 2.7V to 5.5V, V
POS
>
6.5V, 1mA < I
NEG
< 100mA,
I
POS
= no load, T
A
= 0°C to
+105°C
V
INN
= 2.7V to 5.5V, V
POS
>
6.5V, 1mA < I
NEG
< 100mA,
I
POS
= no load, T
A
= -40°C to
+105°C
Maximum Load Current
V
IN
= 2.7V, V
NEG
= -15V
V
IN
= 3V, V
NEG
= -15V
-50
1
1000
+0/-12
94
98
+50
1150
1.0
1.2
5
5.5
1
50
-0.4
TYP
+0/-12
94
1.25
-1
0
50
70
120
25
0.5
200
50
1.0
20
1.4
+0.4
98
1.264
MAX
UNITS
%
%
V
%
%
mA
nA
mV
Ω
μA
A
ms
V
μA
mA
kHz
%
%
-60
+60
mV
V
POS
+ V
NEG
Regulation Voltage
-80
+80
-100
50
70
+100
mA
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Maxim Integrated
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3
MAX20070
Integrated TFT Power Supply and
LED Backlight Driver
Electrical Characteristics (continued)
PARAMETER
LXN On-Resistance
LXN Leakage Current
LXN Current Limit
Soft-Start Period
POSITIVE CHARGE-PUMP REGULATOR
PGVDD Operating Voltage Range
HVINP-DP Current Limit
Oscillator Frequency
FBPG Regulation Voltage
FBPG Line Regulation
FBPG Input Bias Current
DP On-Resistance High
DP On-Resistance Low
NEGATIVE CHARGE-PUMP REGULATOR
HVINP-DN Current Limit
Oscillator Frequency
FBNG Regulation Voltage
FBNG Line Regulation
FBNG Input Bias Current
DN On-Resistance High
DN On-Resistance Low
SEQUENCE SWITCHES
POS Output Range
POS On-Resistance
POS Charge Current Limit
POS Discharge Resistance
POS Soft-Start Charge Time
NEG Output Range
NEG Discharge Resistance
PGVDD On-Resistance
PGVDD Current Limit
DGVDD Input Voltage Range
V
NEG
V
POS
V
PGVDD
SYMBOL
(V
IN
= 3.6V, V
BATT
= 12V, Typical operating circuit as
Figure 5,
= -40°C to +105°C, unless otherwise noted. Typical values are at
T
A
= +25°C.) (Note 2)
CONDITIONS
INN to LXN, V
LXN
= 0.1A
V
IN
= 3.6V, V
LXN
= V
NEG
=
-15V, T
A
= +25°C
Duty cycle = 80%
I
LIM
ramp
6
15
300
1.236
V
HVINP
= 11 to 15V
V
FBPG
= 1.25V, T
A
= +25°C
I
DP
= 10mA
I
DP
= -10mA
15
300
-12
V
HVINP
= 11V to 15V
V
FBNG
= 0V, T
A
= +25°C
I
DN
= 10mA
I
DN
= -10mA
Tracks HVINP
(HVINP-POS), I
POS
= 100mA
Expires after soft-start period
Current mode (0A to full current
limit)
-15
2
(HVINP-PGVDD),
I
PGVDD
= 3mA
Expires when PGVDD charging
is completed
15
6
3.4
30
50
22
6
60
120
2
3.4
5
6
V
IN
0.8
-100
30
15
400
0
0
500
+12
0.2
+100
60
30
15
1.5
-100
30
15
400
1.25
0
500
1.264
0.2
+100
60
30
1.2
1.5
5
V
HVINP
MIN
TYP
0.6
MAX
1.2
20
1.8
UNITS
Ω
μA
A
ms
V
mA
kHz
V
%/V
nA
Ω
Ω
mA
kHz
mV
%/V
nA
Ω
Ω
V
Ω
mA
kΩ
ms
V
kΩ
Ω
mA
V
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Maxim Integrated
│
4
MAX20070
Integrated TFT Power Supply and
LED Backlight Driver
Electrical Characteristics (continued)
PARAMETER
DGVDD Discharge Resistance
DGVEE Input Voltage Range
DGVEE Discharge Resistance
SEQ Bias Current
TFT FAULT PROTECTION
HVINP Undervoltage-Fault
Threshold
NEG Undervoltage-Fault Threshold
FBP Undervoltage-Fault Threshold
FBPG Undervoltage-Fault
Threshold
FBNG Undervoltage-Fault
Threshold
Undervoltage-Fault Timer
FBP Short-Circuit Fault Threshold
NEG Short-Circuit Fault Threshold
Short-Circuit Fault Timer
BATT INPUT
Input Voltage Range
Input Voltage Range
Quiescent Supply Current
Standby Supply Current
Undervoltage Lockout
Undervoltage-Lockout Hysteresis
V
CC
REGULATOR
Output Voltage
Dropout Voltage
V
CC
Undervoltage Lockout
V
CC
UVLO Hysteresis
Short-Circuit Current Limit
BOOST/SEPIC CONTROLLER
Switching Frequency
Maximum Duty Cycle
Frequency Dither
D
MAX
UVLO
VCC
(V
IN
= 3.6V, V
BATT
= 12V, Typical operating circuit as
Figure 5,
= -40°C to +105°C, unless otherwise noted. Typical values are at
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