MAX8758ETJ Maxim Integrated Products, MAX8758ETJ Datasheet - Page 11

• Manufacturer Part Number: MAX8758ETJ
• Description: Display Drivers Step-Up Regualtor wi th Swith Control and
• Manufacturer: Maxim Integrated Products

Specifications of MAX8758ETJ

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 2. Functional Diagram
Table 1. Component List
DESIGNATION
C3, C4, C5
D2, D3, D4
C1, C2
D1
L1
3.3µF ±10%, 6.3V X5R ceramic capacitors
(0603)
TDK C1608X5R0J335M
4.7µF ±20%, 10V X5R ceramic capacitors
(1206)
TDK C3216X5R1A475M
3A, 30V Schottky diode (M-flat)
Toshiba CMS02 (top mark S2)
200mA, 100V dual diodes (SOT23)
Fairchild MMBD4148SE (top mark D4)
4.2µH, 1.9A inductor
Sumida CDRH6D12-4R2
V
______________________________________________________________________________________
IN
Step-Up Regulator with Switch Control
and Operational Amplifier for TFT LCD
DESCRIPTION
IN
LDO
SHDN
FREQ
SRC
GON
DRN
CTL
THR
MODE
DLP
MAX8758
AND BOOTSTRAP
REGULATOR
LINEAR
CONTROL
SWITCH
CONTROLLER
REGULATOR
STEP-UP
The MAX8758 is designed primarily for TFT LCD panels
used in notebook computers. It contains a high-perfor-
mance step-up regulator, a high-speed operational
amplifier, a logic-controlled, high-voltage switch-control
block with programmable delay, and an internal linear
regulator for bootstrapping operation. Figure 2 shows
the MAX8758 functional block diagram.
The step-up regulator is designed to generate the LCD
source driver supply. It employs a current-mode, fixed-
frequency PWM architecture to maximize loop band-
width and provide fast transient response to pulsed
loads typical of TFT LCD panel source drivers. The inter-
nal oscillator offers two pin-selectable frequency options
(640kHz/1.2MHz), allowing users to optimize their
designs based on the specific application requirements.
COMP
LX
PGND
SUPB
NEGB
OUTB
POSB
GND
FB
SS
Detailed Description
Step-Up Regulator
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