MAX686EEE+T Maxim Integrated Products, MAX686EEE+T Datasheet - Page 8

• Manufacturer Part Number: MAX686EEE+T
• Description: IC SUPPLY LCD BIAS INV 16-QSOP
• Manufacturer: Maxim Integrated Products
• Type: Step-Up (Boost), Invertingr

Specifications of MAX686EEE+T

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: ±27.5V
• Current - Output: 100mA
• Frequency - Switching: 300kHz
• Voltage - Input: 2.7 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Power - Output: 667mW
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DAC-Controlled Boost/Inverter
LCD Bias Supply with Internal Switch
Figure 1. Boost Configuration: Positive Output Voltage
Figure 2. Negative Output Voltage Application Circuit
8
_______________________________________________________________________________________
V
IN
= 0.8V TO 27.5V
V
IN
= 0.8V TO 27.5V
V
V
CC
CC
= 2.7V TO 5.5V
= 2.7V TO 5.5V
15 F
15 F
DAC CONTROL
DAC CONTROL
0.1 F
0.1 F
ON/OFF
ON/OFF
V
V
UP
DN
SHDN
POL
V
V
POL
UP
DN
SHDN
CC
DD
CC
DD
GND
GND
MAX686
MAX686
22 H
22 H
L1
L1
DACOUT
DACOUT
LCDON
PGND
LCDON
PGND
ISET
POK
ISET
POK
REF
REF
LX
FB
LX
FB
MBR0530L
R3
R3
2
R4
D1
R1
0.1 F
0.1 F
2.2 F
R2
R1
MBRO530L
R2
D2
C
100pF
C
22pF
F
F
V
IN
2.2 F
4.7 F
|
V
OUT
NEGATIVE
VOLTAGE
D1
MBRO530L
OUTPUT
|
27.5V
0.1 F
V
OUT