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.