Datasheet Details
| Part number | LM2636 |
|---|---|
| Manufacturer | National Semiconductor (now Texas Instruments) |
| File Size | 325.31 KB |
| Description | 5-Bit Programmable Synchronous Buck Regulator Controller |
| Datasheet |
 LM2636 Datasheet
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General Description
The LM2636 is a high speed controller designed specifically for use in synchronous DC/DC buck converters for advance d microprocessors.
A 5-bit DAC accepts the VID code directly from the CPU and adjusts the output voltage from 1.3V to 3.5V.
Key Features
- as required by Intel VRM specifications. Current limiting is achieved by monitoring the voltage drop across the rDS_ON of the high side MOSFET, which eliminates an expensive current sense resistor. The LM2636 employs a fixed-frequency voltage mode PWM architecture. To provide a faster response to a large and fast load transient, two ultra-fast comparators are built in to monitor the output voltage and override the primary control loop when necessary. The PWM frequency is adjustable from 50 kHz t.