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1 Features

? 5962R13202 (1):

– Radiation hardness assurance (RHA) qualified

up to total ionizing dose (TID) 100 krad(Si)

– ELDRS-free: 100 krad(Si)

– Dose rate: 10 mrad(Si)/s

– Single event latch-up (SEL) immune to

LET = 85 MeV-cm2/mg

– SEB and SEGR immune to

LET = 85 MeV-cm2/mg

– SET/SEFI onset threshold > 40 MeV-cm2/mg(2)

? Specifically designed to always upset low

to avoid damage to critical downstream

component

– SET/SEFI cross-section plot(2)

? Ultra-low VIN range: 1.5 V to 7 V

? 3-A maximum output current

? Current share/parallel operation to provide up to

6-A output current

? Stable with ceramic output capacitor

? ±2 accuracy over line, load, and temperature

? Programmable soft start through external capacitor

? Input enable across all input voltages and powergood

output for power sequencing

? Ultra-low dropout LDO voltage:

62 mV at 1 A (25°C), VOUT = 1.8 V

? Low noise:

20.33 μVRMS, VIN = 2 V, VOUT = 1.8 V at 3 A

? PSRR: over 45 dB at 1 kHz

? Excellent load/line transient response

? Foldback current limit

? See the Design and development tab

? Thermally-enhanced CFP package, 0.4° C/W RθJC

2 Applications

? Space satellite point of load supply for FPGAs,

microcontrollers, ASICs, and data converters

? Radiation-hardened low-noise linear regulator

power supply for RF, VCOs, receivers, and

amplifiers

? Clean analog supply requirements

? Command and data handling (C&DH)

? Optical imaging payload

? Radar imaging payload

? Satellite electrical power system (EPS)

3 Description

The TPS7H1101A-SP is an improved version of

the TPS7H1101-SP allowing the use of the enable

feature across the entire input voltage range. It is a

radiation-hardened LDO linear regulator that uses a

PMOS pass element configuration. It operates over

a wide range of input voltage, from 1.5 V to 7 V

while offering excellent PSRR. The TPS7H1101A-SP

features a precise and programmable foldback current

limit implementation with a very-wide adjustment

range. To support the complex power requirements of

FPGAs, DSPs, or microcontrollers, the TPS7H1101ASP

provides enable on and off functionality,

programmable soft start, current sharing capability,

and a Power Good open-drain output.