Device Functional Modes9.4.1 Open L

Device Functional Modes
9.4.1 Open Loop (Comparator)
When the cathode/output voltage or current of TL43xx is not being fed back to the reference/input pin in any
form, this device is operating in open loop. With proper cathode current (Ika) applied to this device, TL43xx will
have the characteristics shown in Figure 23. With such high gain in this configuration, TL43xx is typically used as
a comparator. With the reference integrated makes TL43xx the prefered choice when users are trying to monitor
a certain level of a single signal.