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LD7129

Leadtrend
Part Number LD7129
Manufacturer Leadtrend
Description Single Synchronous Buck PWM and Linear Power Controller
Published Jul 5, 2015
Detailed Description LD7129 8/27/2004 Single Synchronous Buck PWM and Linear Power Controller General Description The LD7129 consists of the...
Datasheet PDF File LD7129 PDF File

LD7129
LD7129

Overview
LD7129 8/27/2004 Single Synchronous Buck PWM and Linear Power Controller General Description The LD7129 consists of the dual-output power controller and the protection circuits in a single SOP-14 packaged chip for the graphic card and other applications.
The dual-output power controller provides the regulation on a synchronous rectified buck converter by driving 2 N-MOSFETs and one N-MOSFET in a linear configuration.
The synchronous rectified buck converter provides simple, single feedback loop, voltage mode control with fast transient response.
Internal 0.
8V temperature-compensated reference voltage.
A fixed 600KHz frequency oscillator reduces design complexity, while balancing typical application cost and efficiency.
The internal soft-start function and the 12V direct drive on switching output helps to eliminate the bootstrap circuit.
Furthermore, the internal POR (power on reset) help to prevent the system from the sequence issue during the startup and turn-off.
Considering the fau...


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