EM65568 ELAN Microelectronics Corp, EM65568 Datasheet - Page 50

• Manufacturer Part Number: EM65568
• Description: 130 Com/ 128 Seg 4096 Color Stn Lcd Driver
• Manufacturer: ELAN Microelectronics Corp

7.22 Booster Circuit
Placing capacitor C1 across CAP1+ and CAP1-, across CAP2+ and CAP2-, across CAP3+ and CAP3-, across CAP4+ and
CAP4-, across CAP5+ and CAP5-and across VOUT and VSS boosts the voltage coming from VEE and VSS n-times and
outputs the boosted voltage to VOUT pin. The twice, third, fourth or fifth boosted voltage output to the VOUT pin by the boost
step register set. The boost step registers set by the command.
(1) In case of using only twice boosted voltage, placing C1 only across CAP1+ and CAP1- and opening CAP2+, CAP2-,
(2) In case of using only third boosted voltage, placing C1 only across CAP1+ and CAP1-, across CAP2+ and CAP2- and
(3) In case of using only fourth boosted voltage, placing C1 only across CAP1+ and CAP1-, across CAP2+ and CAP2-, across
(4) In case of using only fifth boosted voltage, placing C1 only across CAP1+ and CAP1-, across CAP2+ and CAP2-, across
(5) In case of using only sixth boosted voltage, placing C1 only across CAP1+ and CAP1-, across CAP2+ and CAP2-, across
When use built-in booster circuit, output voltage (VOUT) must less than recommended operating voltage (18.0 Volt). If output
voltage (VOUT) over recommended operating voltage, correct work of chip can not guarantee.
* This specification is subject to be changed without notice.
CAP3+, CAP3-, CAP4+, CAP4-, CAP5+ and CAP5-.
opening CAP3+, CAP3-, CAP4+, CAP4, CAP5+ and CAP5-.
CAP3+ and CAP3- and opening CAP4+, CAP4, CAP5+ and CAP5.
CAP3+ and CAP3- across CAP4+ and CAP4- and opening CAP5+ and CAP5.
CAP3+ and CAP3- across CAP4+ and CAP4- across CAP5+ and CAP5.
VEE=3V
VSS=0V
3 times boosting
VOUT=9V
130 COM/ 128 SEG 4096 Color STN LCD Driver
50
VEE=3V
VSS=0V
6 times boosting
VOUT=18V
2005/3/8 (V1.2)
EM65568