Panasonic AN8041S Data Sheet
Summary
The AN8041S is a professional inverter control IC designed to manage liquid crystal backlights using PWM technology, simplifying system design by precisely controlling DC voltage and cathode-ray tube current. This comprehensive technical manual details its architecture, providing detailed pin descriptions, operational parameters, and application circuit examples for both step-up and step-down configurations. It is essential reading for electrical engineers developing LCD displays, digital cameras, and PDAs requiring reliable backlight control solutions.
Page 1 Text Content
查询AN8041S供应商 Voltage Regulators
AN8041S Liquid crystal backlight control IC Overview Unit: mm The AN8041S is an inverter control IC for liquid
crystal backlight using PWM method. The output voltage of DC-DC converter and the current of cath- ode-ray tube can be controlled by using two error amplifiers, so that the system is designed easily. Since the n-channel MOSFET can be directly
(0° to 10°)
driven, it is possible to construct a highly effective 0.3
power supply.
Features Operating supply voltage: 3.6 V to 34 V *
Totem pole output circuit: Output current of ±500 m A
Seating plane Seating plane
Built-in bootstrap circuit N-channel power MOSFET can be directly driven
Built-in two error amplifier circuits allow both the SOP016-P-0225A
voltage and current control Incorporating on/off functions (active-high control input, standby mode current is 5 µA or less) Built-in timer latch short-circuit protection circuit Maximum oscillation frequency: 500 k Hz Note) The voltage is limited to the range of 3.6 V to 17 V if used in a step-down circuit.
Applications LCD displays, digital still cameras, and PDAs
Block Diagram
VREF Constant
Bootstrap
2.57 V current source OSC
PWM comp.
On/off
active-high
FB1 IN+1 Error amp. 1 IN−1
Latch
comp.
IN+2 Error amp. 2 IN−2
Page Summary Contents For Panasonic AN8041S Data Sheet
Manual Details
| Brand | Panasonic |
|---|---|
| Pages | 15 |
| File Size | 158.76 KB |
| Published | June 02, 2026 |
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Frequently Asked Questions
What operating voltage range is recommended for the AN8041S?
For a step-down circuit, the voltage should be limited to 3.6 V to 17 V; for a step-up circuit, it ranges from 3.6 V to 34 V.
What protection and control features are built into this IC?
It includes integrated short-circuit detection (S.C.P.) and a timer latch short-circuit protection circuit, along with an on/off function (active-high control input).
How can I optimize the bootstrap capacitor when using this device?
Set the capacitance value high enough to increase CB terminal voltage above VREF at turn-on, ensuring it is significantly larger than the n-channel MOSFET gate input capacitance (CB >> Ciss).
What are the main applications for the AN8041S IC?
It is designed for use in LCD displays, digital still cameras, and PDAs.