Key facts
- Brand
- Fairchild
- Model
- FSL126MR
- Category
- Other Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2012-07-12
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Fairchild Semiconductor FSL126MR Power Switch Datasheet
The FSL126MR is an integrated Pulse Width Modulator (PWM) and SenseFET designed for high-performance offline Switch-Mode Power Supplies (SMPS) with minimal external components. It combines an avalanche-rugged SenseFET with a current-mode PWM control block to reduce component count and design size while increasing efficiency.
The device features a precision fixed operating frequency with frequency modulation for attenuating EMI, internal startup circuitry, and built-in soft-start. It includes various protection mechanisms such as pulse-by-pulse current limiting, abnormal over-current function with hysteresis, auto-restart mode, under-voltage lockout (UVLO), and thermal shutdown.
Fairchild FSL126MR specifications
| Operating Junction Temperature | -40 to +105 °C |
|---|---|
| Storage Temperature | -55 to +150 °C |
| Drain-Source Breakdown Voltage | 650 V |
| Continuous Drain Current | 2 A |
| Total Power Dissipation | 1.5 W |
| Switching Frequency | 61 to 73 KHz |
| Maximum Duty Cycle | 83 % |
| Internal Soft-Start Time | 15 ms |
| Operating Supply Current | 1.8 mA |
Source: Fairchild Semiconductor FSL126MR Power Switch Datasheet
All Fairchild FSL126MR documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What package does the FSL126MR come in?
The FSL126MR is available in an 8-Lead, Dual Inline Package (DIP).
From: Fairchild Semiconductor FSL126MR Power Switch Datasheet
Does the FSL126MR include built-in soft-start?
Yes, the device includes a built-in soft-start with a time of 15ms.
From: Fairchild Semiconductor FSL126MR Power Switch Datasheet
What is the typical application for the FSL126MRT?
It is designed for offline Switch-Mode Power Supplies (SMPS) with minimal external components.
From: Fairchild Semiconductor FSL126MRT PWM Controller Datasheet
Does the device include built-in protection functions?
Yes, it includes Overload Protection, Over-Voltage Protection, Abnormal Over-Current Protection, and Internal Thermal Shutdown.
From: Fairchild Semiconductor FSL126MRT PWM Controller Datasheet