aat3153 Datasheet - Analogictech
The AAT3153 is a high efficiency, 1MHz, step-up converter for powering white LEDs from a single-cell lithium-ion battery or dual-cell nickel metal hydride...
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📝 Component Overview
The AAT3153 is a high efficiency, 1MHz, step-up converter for powering white LEDs from a single-cell lithium-ion battery or dual-cell nickel metal hydride battery. The device is capable of delivering a consistent 20mA to 50mA of LED current, depending on the input voltage and the external component selection.
Key Features and Benefits
- High Efficiency: Up to 90% efficiency
- 1MHz Switching Frequency
- 20mA to 50mA LED Current
- Single-Cell Lithium-Ion Battery or Dual-Cell Nickel Metal Hydride Battery Input
- Automatic Soft-Start
- Over-Temperature Protection
- Over-Current Protection
- Short-Circuit Protection
Typical Applications
- White LED Backlighting for Cell Phones and Smartphones
- White LED Flash for Digital Still Cameras
- Portable Electronics
- Battery-Powered Devices
📊 Complete Technical Specifications
Absolute Maximum Ratings
| Parameter | Value |
|---|---|
| Input Voltage | 5.5V |
| Operating Temperature | -40°C to +85°C |
| Storage Temperature | -40°C to +150°C |
Electrical Characteristics
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Efficiency | VIN = 3.6V, IOUT = 20mA | 80% | 85% | 90% | % |
| Output Voltage | VIN = 3.6V, IOUT = 20mA | 4.5V | 5V | 5.5V | V |
Package Information
- 16-Pin 4x4mm QFN: The AAT3153 is available in a 16-pin 4x4mm QFN package.
Pin Configuration
- Pin 1: VIN - Input Voltage
- Pin 2: GND - Ground
🔧 Application Guidelines
Design Considerations
The AAT3153 requires a minimum of 2.7V input voltage to operate. The device can be used with a single-cell lithium-ion battery or a dual-cell nickel metal hydride battery. The output voltage can be set using an external resistor divider.
Installation Guidelines
The AAT3153 should be mounted on a PCB with adequate thermal management. The device requires a minimum of 4x4mm of copper area for heat sinking.
Operational Notes
The AAT3153 has built-in over-temperature protection, over-current protection, and short-circuit protection. The device will automatically shut down if any of these conditions are detected.