Features: • Supports four types of LCD panels (1/240 duty, 1/200 duty, 1/160 duty, and 1/120 duty).
• Input voltage range: 2.4 to 5.0 V (The S-8335 can be driven by a single direct-coupled lithium battery.)
• Output voltage range Common driver positive power supply (VRH) output voltage range(typ.value)
8.91 to 16.59 V (S-8335A240FT)
8.22 to 15.30 V (S-8335A200FT)
7.48 to 13.93 V (S-8335A160FT)
6.66 to 12.41 V (S-8335A120FT)
(This supply can be varied by on-chip 6-bit electric volume. Power MOSFET is built in.)
Common driver negative power supply (VRL) output voltage range(typ.value)
-6.87 to -12.80 V (S-8335A240FT)
-6.18 to -11.49 V (S-8335A200FT)
-5.44 to -10.13 V (S-8335A160FT)
-4.61 to -8.59 V (S-8335A120FT)
Segment driver positive power supply (VCH) output voltage range 2.0 to 3.8 V Segment driver intermediate potential (VM) output voltage range 1.0 to 1.9 V Icon positive power supply (VICON) output voltage range 1.0 to 2.2 V (This supply can be set arbitrarily by external resistors.)
• Low current consumption
100 A typ. (mode 1, VBAT = 3 V)
10 A typ. (mode 2, VBAT = 3 V)
1 A max. (mode 3, VBAT = 3 V)
• Triple operation mode function: Triple mode switching according to 2-bit input
Mode 1: Normal operation
Mode 2: Icon mode (reference voltage circuit- and regulator S-only operation)
Mode 3: Standby mode (power off)
• Power-off function Stops step-up or step-down operation and short circuits VRH and VRL to VSS by on-chip and external Nch transistors.
• Soft-start function: This function can be set according to an external capacitor (CSS).
• Oscillation frequency: 100 kHz ± 20 kHz, Duty = 50%
• Lead-free products
Application• Power supply for medium-sized LCD panelPinout
Specifications
| Parameter |
Symbol |
Ratings |
Unit |
| VBAT pin voltage |
VBAT |
8 |
V |
| CONT1 pin voltage |
VCONT1 |
−0.3 to +20 |
V |
| CONT1 pin current |
ICONT1 |
300 |
mA |
| VOUT1 pin voltage |
VOUT1 |
−0.3 to +20 |
V |
| EXT2 pin voltage |
VEXT2 |
−0.3 to VBAT+20 |
V |
| EXT2 pin current |
IEXT2 |
±50 |
mA |
| CONT3 pin voltage |
VCONT3 |
−0.3 to +8 |
V |
| CONT3 pin current |
ICONT3 |
200 |
mA |
| VOUT3 pin voltage |
VOUT3 |
−0.3 to +8 |
V |
| VQERR pin voltage |
VQERR |
−0.3 to +8 |
V |
| VDDX pin voltage |
VDDX |
8 |
V |
| VXO pin voltage |
VXO |
−0.3 to VDDX+0.3 |
V |
| Other pin voltage |
|
−0.3 to VBAT+0.3 |
V |
| Power dissipation |
PD |
650 |
mW |
| Operating temperature range |
TOPR |
−20 to +70 |
|
| Storage temperature range |
TSTG |
−40 to +125 |
|
Note: Although this IC incorporates an electrostatic protection circuit, the user is urged to avoid subjecting the circuit to an extremely high static electricity or voltage in excess of its performance.
DescriptionThe S-8335 Series is a bias supply IC for a Multi Line Addressing (MLA) driven LCD using a dual-line simultaneous selection mode. This IC supports medium-sized LCD panels. Two step-up type and one inverter type PFM control CMOS switching regulators supply the required positive or negative power to the two MLA-driven LCD common drivers and segment drivers. Because of its CMOS structure, the current consumption of the S-8335 Series is extremely low, which makes it ideal for the LCD power supply of portable equipment that requires low power consumption.
Also, an extremely low power consumption LCD module can be created by using the S-8335 Series with the LCD common driver (HD66523R∗1: Manufactured by Hitachi, Ltd.) and segment driver (HD66522∗1: Manufactured by Hitachi, Ltd.).
S-8335 Data Sheet
