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.