PAM2804：Low Voltage DC-DC LED Drivers
| Part Number | Data Sheet | SPICE Model | Topologies (Buck) | Topologies (Buck-Boost) | Topologies (Boost) | MinimumInput Voltage (V) | MaximumInput Voltage (V) | Maximum Output Voltage (V) | LED Current (A) | Switching Frequency (kHz) | Efficiency (%) | OperatingTemperatureRange (°C) | QuiescentCurrentTyp (mA) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PAM2804 | PAM2804.pdf | - | Yes | - | - | 2.5 | 6 | 5 | 1 | 1.5 | 93 | -40 to +85 | 0.18 |
Description
The PAM2804 is a step-down constant current °C driver. When the input voltage down to lower than °C forward voltage, then PAM2804 run into LDO mode. The PAM2804 supports a range of input voltages from 2.5V to 6.0V, allowing the use of a single Li+/Li-polymer cell, 3AA or 4AA cell, USB, and other standard power sources. The FB voltage is only 0.1V to achieve high efficiency. PAM2804 employ internal power switch and synchronous rectifier to minimize external part count and realize high efficiency. During shutdown, the input is disconnected from the output and the shutdown current is less than 1μA. Other key features include undervoltage lockout to prevent deep battery discharge of the Li+ battery.
Application
- 3AA or 4AA Batteries Powered Flashlight
- 1 Cell Li-Ion Battery Powered Flashlight
Features
- Efficiency up to 93%
- 180μA(typ) Quiescent Current
- Output Current: Up to 1A
- Internal Synchronous Rectifier
- 1.5MHz Switching Frequency
- Soft-Start
- Under-Voltage Lockout
- Short °C Protection
- Open °C Protection
- Thermal Shutdown
- 5-pin Small TSOT25 Package
- Pb-Free Package
Ordering Information
- PAM2804AAB010
- PAM2804EV1
TSOT25
- PAM2804.pdf PAM2804
