Description
DATASHEET ISL9440B, ISL9440C Triple Step-Down PWM and Single Linear Controller with Programmable Soft-Start FN6799 Rev 4.00 February 18, 2016 The I.
Features
* TABLE 1.
PART NUMBER
EARLY WARNING
SWITCHING FREQUENCY
(kHz)
SOFT-STARTING TIME (ms)
ISL9440
Yes
300
1.7
ISL9440A
Yes
600
1.7
ISL9441
No
300
1.7
ISL9440B
Yes
300
Programmable
ISL9440C
Yes
(No longer
available or
supported)
600
Programmable
Features
* Three Integr
Applications
* Each output is adjustable down to 0.8V. The PWMs are synchronized at 180° out-of-phase thus, reducing the RMS input current and ripple voltage. The ISL9440B and ISL9440C offer programmable soft-start, independent enable inputs for ease of supply rail sequencing, and integrated UV/OV/OC/OT protecti