A system and method for reducing the transient responses in a phase lock
loop (PLL) (100) with variable oscillator gain is disclosed. The system
includes a charge pump (104) having an adapt mode and a normal mode of
operation. The charge pump (104) also includes controlled trickle
currents from current sources (208), (210) which are applied to the
output (105), (107) of charge pump (104) to minimize the transient
responses of the PLL (100). A programmable delay is provided in the
charge pump (104) and is configured using a controller (122) based on the
variable oscillator gain for the PLL (100). The configured programmable
delay is used in the adapt mode of operation for adding a trickle current
from the current source (210) to the adapt mode output (107).