1 Features

• QMLP TPS7H3302-SP standard microcircuit

drawing (SMD) available, 5962R14228

• Space Ehanced Plastic Vendor item drawing

available, VID V62/22615

• Total ionizing dose (TID) charactericized

– Radiation hardness assured (RHA) qualified up

to total ionizing dose (TID) 100 krad(Si) or 50

krad(Si)

• Single-Event Effects (SEE) Charactericized

– Single event latch-up (SEL), single event gate

rupture (SEGR), single event burnout (SEB)

immune up to LET = 70 MeV-cm2 /mg

– Single event transient (SET), single event

functional interrupt (SEFI), and single event

upset (SEU) characterized up to 70

MeVcm2 /mg

• Supports DDR, DDR2, DDR3, DDR3L, and DDR4

termination applications

• Input voltage: supports a 2.5-V and 3.3-V rail

• Separate low-voltage input (VLDOIN) down to

0.9 V for improved power efficiency

• 3-A sink and source termination regulator

• Enable input and power-good output for power

supply sequencing

• VTT termination regulator

– Output voltage range: 0.5 to 1.75 V

– 3-A sink and source current

• Integrated precision voltage divider network with

sense input

• Remote sensing (VTTSNS)

• VTTREF buffered reference

– 49% to 51% accuracy with respect to

VDDQSNS (±3 mA)

– ±10 mA sink and source current

• Undervoltage lockout (UVLO) and overcurrent limit

(OCL) functionality integrated

• Plastic package

2 Applications

• Satellite electrical power system (EPS)

• Command and data handling (C&DH)

• Optical imaging payload

• Radar imaging payload

3 Description

The TPS7H3302 is a radiation-hardend double data

rate (DDR) 3-A termination regulator with built-in

VTTREF buffer. The regulator is specifically designed

to provide a complete, compact, low-noise solution for

space DDR termination applications such as single

board computers, solid state recorders, and payload

processing.

The TPS7H3302 supports DDR VTT termination

applications using DDR, DDR2, DDR3, DDR3L, and

DDR4. The fast transient response of the TPS7H3302

VTT regulator allows for a very stable supply during

read/write conditions. The TPS7H3302 also includes

a built-in VTTREF supply that tracks VTT to further

reduce the solution size. To enable simple power

sequencing, both an enable input and a powergood

output (PGOOD) have been integrated into the

TPS7H3302. The enable signal can also be used to

discharge VTT during suspend to RAM (S3) power

down mode.