Identify the sensed drop that controls the external FET
The LM74700-Q1 places the control function and the power-carrying transistor in different components. Its internal circuitry monitors the voltage difference between ANODE and CATHODE. The quantity changed by the controller is the drive between GATE and ANODE. The sensed drop describes the power path, while the adjusted drive determines how the external N-channel transistor participates in that path. These voltage relationships have different purposes.
This distinction gives the feedback loop a concrete meaning. The controller observes the drop across the external device and changes its channel drive in response. The transistor remains the element carrying the forward load current. Describing the controller's drive capability as though it were an integrated power-current rating would merge the control interface with the separate conduction element.
The external transistor also has a body diode, whose directional path remains relevant when channel drive changes. Thus the architecture includes both a controlled channel and an inherent diode path. Their contributions depend on the operating state. A forward-drop statement describes how the controller manages that arrangement; it does not turn the external transistor into a passive diode with one unchanged voltage characteristic across all states.
Separate forward-drop regulation from full conduction
TI describes regulated conduction and full conduction as separate regions determined by the sensed ANODE-to-CATHODE condition. In the regulated region, the loop changes gate drive to hold the documented forward-drop target. The drive is therefore an adjustable control quantity. The description concerns active regulation of the drop, rather than an assertion that the gate always receives the largest available drive.
As forward demand brings the arrangement into full conduction, the gate driver uses the available charge-pump drive. The named explanation associates this state with reducing the external transistor's on-state resistance. The channel then has a different control basis from the region where gate voltage is continuously adjusted to maintain the forward-drop target. Both descriptions can belong to the same controller without describing the same operating point.
This regional distinction connects current demand, the resulting sensed drop and the controller's response. A regulated-drop headline and an on-resistance description answer different parts of that relationship. They cannot be combined into a single constant-drop claim for every forward current. The useful comparison follows which region is active and which variable the gate driver is controlling there, while retaining the external transistor as part of the conduction mechanism.
Retain the charge-pump and enable qualifications
The internal charge pump supplies energy for driving the external transistor. TI describes a reservoir voltage whose readiness is checked before the gate driver becomes available. That supply role is distinct from the load-current path through the transistor. Charge stored for gate control explains how channel drive is established; it is not a description of the current the external power path can carry.
Driver availability depends on several conditions together. Enable must be asserted as required, the reservoir must have sufficient voltage relative to ANODE, and the controller's ANODE-powered circuitry must satisfy its own startup condition. If those conditions have not been established, the driver keeps the external transistor disabled. An enable command alone consequently identifies only one part of the readiness relationship.
The reservoir also has a continuing operating policy. The charge pump switches between charging and inactive states as its reservoir moves through the documented hysteretic control band. This is separate from the gate driver's selection among forward regulation, full conduction and reverse protection. The two controls interact through available gate-drive energy, but one manages the drive supply while the other responds to the sensed power-path drop.
Distinguish reverse intervention from shutdown directionality
Reverse-current protection changes the controlled channel's state when the sensed power-path condition indicates the named reverse event. The controller removes gate drive, and the external transistor's body diode provides the blocking direction described for this arrangement. The event being sensed and the diode's direction are both part of the explanation. A gate-off statement alone leaves out why that remaining path blocks the unwanted direction.
Shutdown has a different trigger. When EN is low under the documented condition, both the gate driver and charge pump are disabled. TI explicitly states that forward current is then conducted through the external transistor's body diode. Removing controlled channel drive therefore changes the forward conduction mechanism while leaving that inherent path present. The controller being disabled and the load being disconnected are different electrical states.
The comparison must retain current direction as well as the control command. Reverse intervention uses the diode's blocking direction after channel turn-off; shutdown leaves its forward-conducting direction available. These are consequences of the same named external-transistor architecture. They explain why a requirement for forward load disconnection needs a different functional description from reverse-current protection, even though both discussions involve removal of gate drive.
Sources and further reading
LM74700-Q1 SNOSD17G qualitative prose on physical pages 12–15. No thresholds, response-time claim, FET selection, wiring or measured power-path result is presented.