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Part Number: AT1312C
Description: The AT1312A/B/C step-up converter drives white LEDs with a constant current to provide backlight in ce...
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AT1312C
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DataSheet
General Description
AT1312C General Description
The AT1312A/B/C step-up converter drives white LEDs with a constant current to provide backlight in cell phones, PDAs, and other hand-held devices. It features allowing series connection of the white LEDs so that the LED currents are identical for uniform brightness. An enable input can be pulsed repeatedly to adjust LED's brightness. The fast 1.0 MHz current-mode PWM control allows for smaller capacitor and inductor. Fault condition protection uses cycle-by-cycle current limiting to sense maximum inductor current, thermal protection and over-voltage protection. Also included soft-start eliminates inrush current during start-up. The 0.2V low reference voltage minimized the power loss
across the current-setting resistor.
The AT1312A/B/C is available in 6-pin SOT-26 packages.
AT1312C Maximum Ratings
|
Parameter |
Rated Value |
Unit | |
| VIN voltage |
-0.3 to +6.5 |
V | |
| LX , OVP voltage |
-0.3 to +28 |
V | |
| EN , FB to GND |
-0.3 to +6.5 |
V | |
| Switch Current (ILX) |
0.6 |
A | |
| Continuous power dissipation (SOT-26 Ta=+25) |
0.35 |
W | |
| Operating Junction Temperature Range |
-30 to 85 |
||
| Lead Temperature (Soldering 5 sec) |
260 |
||
| Storage Temperature |
-65 to 125 |
||
| Package Thermal Resistance (JA) |
250 |
/W | |
| ESD Susceptibility*2 | HBM |
2 |
KV |
| MM |
200 |
V | |
1. Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
2. Device are ESD sensitive. Handling precaution recommended. The Human Body model is a 100pF capacitor discharged through a 1.5K resistor into each pin.
AT1312C Features
•Operating Voltage:2.5V to 6.0V.
•High Operating Frequency: 1MHz
•High Output Voltage: Up to 28V/23V/16V
•Shutdown Current <1A
•28V/23V/16V Output Over-Voltage Protection
•Digital Dimming Control.
•Built-in Cycle-by Cycle Current-Limiting.
•Built-in Soft-Start Function.
•0.2V Low Reference Voltage
•Tiny SOT-26 Package
•High Operating Frequency: 1MHz
•High Output Voltage: Up to 28V/23V/16V
•Shutdown Current <1A
•28V/23V/16V Output Over-Voltage Protection
•Digital Dimming Control.
•Built-in Cycle-by Cycle Current-Limiting.
•Built-in Soft-Start Function.
•0.2V Low Reference Voltage
•Tiny SOT-26 Package
AT1312C Typical Application
• LED Module
• Compact Back Light Module
• Constant Current Source
• Compact Back Light Module
• Constant Current Source
AT1312C Connection Diagram
AT1
PDF/DataSheet Download
- Datasheet: AT1
- File Size: 55024 KB
- Manufacturer:
- Click here to Download
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AT1312C Relative Products
AT1312B
The AT1312A/B/C step-up converter drives white LEDs with a constant current to provide backlight in cell phones, PDAs, and other hand-held devices. AT1312B features allowing series connection of the white LEDs so that the LED currents are identical for unifo...
AT1312A
The AT1312A/B/C step-up converter drives white LEDs with a constant current to provide backlight in cell phones, PDAs, and other hand-held devices. AT1312A features allowing series connection of the white LEDs so that the LED currents are identical for unifo...
AT1309
The AT1309 step-up converter is designed for small or medium size LCD panel of high bias voltage with a constant current to provide PDAs, and other hand-held devices. AT1309 features a fast 1.4 MHz current-mode PWM control with a built-in 0.3 N-MOS that allo...
AT1308
The AT1308step-up converter is designed for small or medium size LCD panel of high bias voltage with a constant current to provide PDAs,and other hand-held devices. It features a fast 1.0 MHz current-mode PWM control with a built-in 0.3 N-MOS that allows fo...
AT1303
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AT-1300
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