Topology | Buck Converter |
Input voltage | 4.5-24 V |
Switching frequency | 1000 kHz |
Output 1 | 1 V / 5 A |
IC revision | B |
The LM25085A is a functional variant of the LM25085 COT PFET Buck Switching Controller. The functional differences of the LM25085A are: The feedback reference voltage is 0.9V, the forced off-time after current limit detection is longer, and the soft-start time is shorter (1.8 ms).
The LM25085A is a high efficiency PFET switching regulator controller that can be used to quickly and easily develop a small, efficient buck regulator for a wide range of applications. This high voltage controller contains a PFET gate driver and a high voltage bias regulator which operates over a wide 4.5V to 42V input range. The constant on-time regulation principle requires no loop compensation, simplifies circuit implementation, and results in ultra fast load transient response. The operating frequency remains nearly constant with line and load variations due to the inverse relationship between the input voltage and the on-time. The PFET architecture allows 100% duty cycle operation for a low dropout voltage. Either the RDS(ON) of the PFET or an external sense resistor can be used to sense current for over- current detection.
Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IRP,40K (A) | RDC max. (mΩ) | fres (MHz) | Size | Version | Samples | |
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7447709006 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-PD SMT Power Inductor | 6.8 | 11.7 | 14 | 23 | 1210 | Standard |
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7447709006 | SPEC |
Samples |
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Order Code | Datasheet | Simulation | Downloads | Status | Product series | L (µH) | IRP,40K (A) | RDC max. (mΩ) | fres (MHz) | Size | Version | Samples |
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