• ### Simulating LT1166-based Current Source in LTSpice

The following circuit operates on the bench but isn't stable with a zero load (as shown: R8 is the output current sense resistor):

(Most components are as shown, but the FETs and the 2.5V references are different in the physical circuit, and the…

With those small 100V transistors, I would not expect over 100W into 8 ohms (about +/-40V swing) and a couple slices to ease the heating. For 350W into 8 ohms, the swing is almost double that, so devices of at least 200V would be needed and 9A peaks, so…

• ### Regarding part constants of LT1166

Hi, Support Team

Regarding LT1166, I have the following questions, and could you give me some advice?
I want to design the parallel connection described in data sheet P14.

1.How do I determine the isolation inductor and small ballast resistor constants…

• ### Request the schematic review (Part # : LT1166)

Hi All,
One of my customer made her schematic as attached.
- Part # :  LT1166 (Power Output Stage Automatic Bias System)
The input voltage of this system is -8V ~ + 8V. (220Hz)
When this condition, customer want to get the output voltage of - 50V ~ + 50V. …

• ### Request the schematic review (Part # : LT1166)

Hi All,

One of my customer made her schematic as attached.

- Part # :  LT1166 (Power Output Stage Automatic Bias System)

The input voltage of this system is -6V ~ + 6V. (220Hz)

When this condition, customer want to get the output voltage of - 35V ~ + 35V…

• ### RE: LT1166控制的功率级偏压，在工作时比如上管5A电流，下管是否会截至或者下管还是在LT1166设定的静态电流下。

The output devices will both be at quiescent setting when not delivering current to the load, but as one device delivers load current, the other device will be controlled to a lower current than quiescent, but not to zero current. If quiescent was set…

• ### LT1166 questions about reference design on datasheet

Hi all,

I have 2 questions for LT1166 when I reading the datasheet. hope someone really familiar with this IC can help me on this. really thanks a lot.

Q1:

what are the major differences between using LT1166 as current source drive and bipolar buffer…

• ### RE: LT1166 当正偏压时。上管工作，下管的电流是否还是静态时候的电流

The purpose of the LT1166 is specifically to prevent the non-linear cutoff of the classic class-B circuit by maintaining a continuous though reduced bias on the device not providing the load current. Look at the LTC6090 datasheet for an example.

• ### RE: LT1166 Current Limit Function

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Thank you,