MAX17075ETG+ Maxim Integrated Products, MAX17075ETG+ Datasheet - Page 12

• Manufacturer Part Number: MAX17075ETG+
• Description: IC DC-DC CONV W/CHRG PUMP 24TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX17075ETG+

• Applications: LCD TV/Monitor
• Current - Supply: 4mA
• Voltage - Supply: 2.3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Boost Regulator with Integrated Charge Pumps,
Switch Control, and High-Current Op Amp
Figure 2. Functional Diagram
The MAX17075 contains a step-up switching regulator
to generate the source driver supply, and two charge-
pump regulators to generate the gate-driver supplies.
Each regulator features adjustable output voltage, digi-
tal soft-start, and timer-delayed fault protection. The
step-up regulator uses fixed-frequency current-mode
control architecture. The MAX17075 also includes one
12
V
______________________________________________________________________________________
GOFF
V
VCC
Detailed Description
V
GON
POS
NEG
OUT
BGND
SRC
COM
DRN
VCC
REF
AGND
FBN
DRVN
SUP
REF
NEGATIVE
CHARGE
PUMP
SEQUENCE
CONTROL
SWITCH
CONTROLLER
V
OSC
AVDD
BOOST
SUP
V
VCC
high-performance operational amplifier designed to
drive the LCD backplane (VCOM). The amplifier fea-
tures high output current, fast slew rate (45V/µs), wide
bandwidth (20MHz), and rail-to-rail outputs. In addition,
the MAX17075 features a high-voltage switch-control
block, a 1.25V reference output, well-defined power-up
and power-down sequences, and thermal-overload
protection. Figure 2 shows the MAX17075 functional
block diagram.
MAX17075
POSITIVE
CHARGE
PUMP
COMP
RSTIN
PGND
DRVP
DEL
CTL
RST
FBP
LX
FB
FROM TCON
V
VCC
V
AVDD
V
POUT
AVDD