1 Features

• Radiation performance:

– Radiation hardness assurance (RHA) up to a

total ionizing dose (TID) of 100 krad(Si) for the

QML's and 50 krad(Si) for the SEP

– Single-event latchup (SEL), single-event

burnout (SEB), and single-event gate rupture

(SEGR) immune up to linear energy transfer

(LET) = 75 MeV-cm2/mg for the QML's and 43

MeV-cm2/mg for the SEP

– Single-event functional interrupt (SEFI) and

single-event transient (SET) characterized up to

LET = 75 MeV-cm2/mg for the QML's and 43

MeV-cm2/mg for the SEP

• Wide supply IN voltage range (VIN): 3V to 14V

• Sequence and monitor up to 4 voltage rails with a

single device

– Daisy chain capability for extended channel

count

• Single resistor programmable global timers for:

– Sequence up and down delay

– Sequence up time to regulation

• Reverse order sequence down

• Precision threshold voltage and hysteresis current

– VTH_SENSEx of 599mV ±1% across: voltage,

temperature, and radiation (TID)

– IHYS_SENSEx of 24μA ±3% across: voltage,

temperature, and radiation (TID)

• Push-pull outputs with programmable pull-up

voltage between 1.6V to 7V

– Global ENx pull-up domain (VPULL_UP1)

– Common SEQ_DONE and PWRGD pull-up

domain (VPULL_UP2)

• FAULT open drain output for monitoring of state

machine induced faults

• Plastic packages outgas tested per ASTM E595

• Available in military (–55°C to 125°C) temperature

range

2 Applications

• Satellite electrical power system (EPS)

• Control sequence and monitoring for complex

digital processors such as: FPGAs, SoCs, AFEs,

and power systems for space applications

3 Description

The TPS7H3014 is an integrated, 3V to 14V, fourchannel

radiation-hardness-assured power-supply

sequencer. Channel count can be expanded

by connecting multiple devices in a daisy-chain

configuration. The device provides sequence up and

down control signals for integrated circuits (IC) with

active high (on) inputs. In addition SEQ_DONE and

PWRGD flags are provided to monitor the sequence

and power status of the monitored power tree.

An accurate 599mV ±1% threshold voltage and a

24μA ±3% hysteresis current provide programmable

rise and fall monitoring voltages. The rise and

fall delay time is globally programmed via a

single resistor. Also, a time-to-regulation timer is

provided to track the rising voltage on SENSEx.

In addition to these features, a FAULT detection

pin is incorporated to monitor internally generated

faults and provide increased system level reliability

for power sequencing space applications. A standard

microcircuit drawing (SMD) is available for the QML

variant, 5962R2320101VXC.