PAM99700：离线LED 驱动器
| Part Number | Data Sheet | SPICE Model | MinimumInput Voltage (V) | MaximumInput Voltage (V) | VDD (V) | OutputCurrent (mA) | LED Current (A) | Accuracy (%) | Frequency (kHz) | Efficiency (%) | Dimming | SupplyCurrent (mA) | Temperature Range (°C) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PAM99700 | PAM99700.pdf | - | 12 | 500 | 10 | 200 | External MOSFET | 10 | 25 to 100 | 90 | PWM/DC | 0.65 | -40 to +85 |
Description
The PAM99700 is an open loop current mode control °C driver IC. The PAM99700 can be programmed to operate in either a constant frequency or constant off-time mode. It includes a 12 - 500V regulator which allows it to work from a wide range of input voltages without the need for an external low voltage supply. The PAM99700 includes a PWM dimming input that can accept an external control signal with a duty ratio of 0 - 100% and a frequency of up to a few kilohertz. It also includes a 0 - 250mV linear dimming input which can be used for linear dimming of the °C current. The PAM99700 is ideally suited for buck °C drivers. Since the PAM99700 operates in open loop current mode control, the controller achieves good output current regulation without the need for any loop compensation. PWM dimming response is limited only by the rate of rise and fall of the inductor current, enabling very fast rise and fall times. The PAM99700 requires only three external components (apart from the power stage) to produce a control°C °C current making it an ideal solution for low cost °C drivers.
Application
- DC/DC or AC/DC LED Driver Applications
- RGB Backlighting LED Driver
- Back Lighting of Flat Panel Displays
- General Purpose Constant Current Source
- Signage and Decorative LED Lighting
Features
- Switch Mode Controller for Single Switch °C Drivers
- Open Loop Peak Current Controller
- Constant Frequency or Constant Off-Time Operation
- Linear and PWM Dimming Capability
- Requires Few External Components for Operation
- Application From a Few mA to More than 1A Output
SO-8
- PAM99700.pdf PAM99700
