Skip to main content
Radiation Hardened Quad Power Supply Sequencer

Package Information

CAD Model: View CAD Model
Pkg. Type: DIE
Pkg. Code:
Lead Count (#):
Pkg. Dimensions (mm):
Pitch (mm):

Environmental & Export Classifications

Moisture Sensitivity Level (MSL)
Pb (Lead) Free No
ECCN (US) EAR99
HTS (US) 8542.39.0090
RoHS (ISL73321SEHVX) EnglishJapanese

Product Attributes

Qualification Level Class V
DLA SMD 5962L1722502V9A
Pb (Lead) Free No
MOQ 100
Temp. Range (°C) -55 to +125°C
CAGE code 34371
Cascadable? Yes
DSEE (MeV·cm2/mg) 86
Die Sale Availability? Yes
Flow RH Hermetic
Lead Compliant No
Number of Controlled Supplies (#) 4
Output Type Enable Open Drain
PGOOD Timer Yes
PROTO Availability? Yes
Pkg. Type DIE
Programmable Delay Yes
Rating Space
Supply Voltage (V) 3 - 13.2
Supply Voltage (max) (V) 13.2 - 13.2
Supply Voltage (min) (V) 3 - 3
Supply current (mA) 3.5
TID LDR (krad(Si)) 75
Tape & Reel No

Description

The ISL70321SEH and ISL73321SEH are radiation hardened and SEE mitigated power supply sequencers designed to drive Point-of-Load (POL) regulators with enable pins. Up to four power supplies can be fully sequenced by a single device or multiple devices can be easily cascaded to sequence an unlimited number of power supplies for dense RF applications. This power supply sequencer requires only two feedback resistors per power supply and a single resistor to set the rising and falling delay. The device features precision input comparators with an input threshold voltage of 600mV ±1.5% for the highest possible accuracy when monitoring the power supply voltages. The ISL70321SEH and ISL73321SEH are offered in an 18 Ld 10mm x 12mm CDFP package or die form and are fully specified across the military ambient temperature range of -55 °C to +125 °C. With minimal external component count, precision voltage monitoring, and SET mitigation, the ISL70321SEH and ISL73321SEH are the ideal choice to control many of today’s highly dense power systems in high-reliability applications.