Datasheet
General Description
The MAX17079 is a 7-channel logic-level input to high-
voltage output level shifter. Each channel has two
inputs plus a shared enable input. Each channel has
two outputs, which can be set to five output levels. Two
outputs are complementary to each other. The five out-
put levels are set by five supply rails that are common
to all 14 outputs.
The five supply rails include a typical TFT VCOM rail.
Two upper rails are always greater than VCOM, with
VH1 always greater than VH2. The two lower rails are
always less than VCOM, with VL1 always less than VL2.
Other supply rails are VLS (the typical TFT AVDD sup-
ply) and VCC (the logic supply). The MAX17079 can
also be configured as a two-level voltage shifter.
When EN is low, all 14 outputs connect to VCOM, and
when EN is high, the outputs are determined by their
inputs. The logic inputs are driven by the timing con-
troller. The output switches are typically 3Ω with low
propagation delays and fast rise times. The MAX17079
has a minimum dead time to prevent shoot-through cur-
rents between supplies. The MAX17079 has thermal
shutdown to protect against overheating, VCC under-
voltage lockout (UVLO), and VLS UVLO.
The MAX17079 is in a 40-pin, 6mm x 6mm, thin QFN
package, with exposed pad and a maximum height of
0.8mm.
Applications
TFT LCD TV Panels
Features
♦ 7-Channel Logic-Level Input to High-Voltage
Output Level Shifter
♦ Complementary Outputs in Each Channel
♦ VLS Input Range from 10V to 18V
♦ VCC Input Range from 2.3V to 3.6V
♦ 2-Level or 4-Level Operation
♦ Sequential or Combinational Logic
♦ 3Ω Output Switches
♦ 5-Level Output
♦ Short Propagation Delay (80ns typ)
♦ Fast Rise Time (30ns typ)
♦ Built-In Dead Time to Prevent Shoot-Through
♦ Thermal Shutdown
♦ VLS and VCC Undervoltage Lockout
MAX17079
4-Level or 2-Level Logic to High-Voltage
Level Shifter for TFT LCD TV Display
________________________________________________________________
Maxim Integrated Products
1
MAX17079
THIN QFN
(6mm x 6mm)
TOP VIEW
35
36
34
33
12
11
13
B1
B2
A3
B3
A4
14
A1
12
VH1
4567
27282930 26 24 23 22
VH2
VLS
VCOM
VL1
VL2
DGND
A2
3
25
37
AGND
B7
38
39
40
VCC
EN
CH
EP = EXPOSED PAD
EP
A7
B6
A6
ST
32
15
OB7
OA1
31
16
17
18
19
20
OA7
OA3
OB3
OA4
OB4
OA5
OB5
OA6
OB6
OB2
OA2
B4
A5
B5
8910
21
OB1
Pin Configuration
Ordering Information
19-2812; Rev 1; 3/10
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
EVALUATION KIT
AVAILABLE
PART TEMP RANGE
PIN-
PACKAGE
PKG
CODE
MAX17079GTL+ -40°C to +105°C
40 TQFN-EP*
(6mm x 6mm)
T4066+5
*
EP = Exposed paddle.
OA1
OB1
OA2
OB2
OA3
OB3
OA4
OB4
OA5
OB5
OA6
OB6
OA7
OB7
A1
B1
A2
B2
A3
B3
A4
B4
A5
B5
A6
B6
A7
B7
VH1 VH2 VCOM
VL1
VL2
VLS
AGND
EN DGND
PANEL
SYSTEM
VCC
CH
10V
7V 6V 5V 2V
15V3.3V
ST
MAX17079
Simplified Operating Circuit