AAT1118 |
RFQ for AAT1118 Required Field |
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| Product | Manufacturers | Pack | D/C |
| AAT1118 | - | - | 06+ |
The AAT1118/A/B is an adjustable triple-channel TFT LCD DC-DC converter that provides one current mode PWM, one positive charge pump and one negative charge pump. Built-in functions include soft-start and power up sequencing. When power is turned on, soft-start avoids inrush current. Power up sequencing feature provides compensation for LCD panel to maintain a smooth voltage during a turn-on cycle
The DC-DC converter consists of an on-chip voltage reference, error amplifier, current sense, pulse width modulation controller, under-voltage lockout protection, thermal detect, soft-start, and fault protection circuit.
When the two charge pumps are in operation, the output voltage would be doubled and the generated VP3 and VP2 (Note 1) could switch on or off TFT gate.
With the minimal external components, the AAT1118/A/B offers a simple and economical solution for TFT LCD power.
Features |
| · Built in 1.6A, 0.2 Switching NMOS· Fault and Thermal Protection· Internal Soft-Start Function· Internal Power Up Sequencing· Dual Adjustable Charge Pump Output Positive Output to 40V Negative Output to 40V -· Power Good Output·TSSOP-16 Package |
| PARAMETER |
SYMBOL |
VALUE |
UNIT |
| VDD to GND |
VDD |
7 |
V |
| SW to GND |
VSW |
18 |
V |
| VDD1 , VDD2 to GND |
VDDH |
16 |
V |
| Input Voltage 1 (IN1, IN2, IN3, SHDN) |
VI1 |
VDD +0.3 |
V |
| Output Voltage 1 (EO, REF V ) |
VO1 |
VDD +0.3 | |
| Output Voltage 2 (OUT2, OUT3, SW, PGO) |
VO2 |
VDDH +0.3 |
V |
| Operating Free-Air Temperature Range |
CT |
-40 to+ 85 |
°C |
| Storage Temperature Range |
storage T |
-45 to +125 |
°C |
| Power Dissipation |
Pd |
750 |
mW |
