MP1530DM-LF Datasheet, PDF (10/16 Pages) MPS Industries, Inc. – Triple Output Step-Up Plus Linear Regulators for TFT Bias

MP1530 – TRIPLE OUTPUT STEP-UP PLUS LINEAR REGULATORS FOR TFT BIAS
The positive linear regulator (GH) is then soft-
started and allowed to settle in one period of CT
ramp. Nine periods of the CT ramp have
occurred since the chip enabled. If all outputs
are in regulation (>80%), the CT will stop
ramping and be held at ground.
The RDY pin will be pulled down to an active
low. If any output remains below regulation
(<80%) before and through the nine CT periods,
RDY will remain high and CT will begin its fault
timer pulse.
V_GH
OUTPUT
VOLTAGES
V_IN
0V
V_IN
IN
0V
V_{EN HIGH}
EN
0V
1.25V
CT
0V
V_IN
RDY
0V
V_MAIN
V_GL
POWER ON RESET
START 1
START 2
START 3
TIME
Figure 2—Startup Timing Diagram
MP1530 Rev. 1.41
www.MonolithicPower.com
10
5/25/2011
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