TPS7H3301-SP_016 Datasheet, PDF (1/28 Pages) Texas Instruments – Sink and Source Radiation-Hardened 3-A DDR Termination Regulator With Built-In VTTREF Buffer

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TPS7H3301-SP
SLVSCJ5A – DECEMBER 2015 – REVISED JUNE 2016
TPS7H3301-SP Sink and Source Radiation-Hardened 3-A DDR Termination Regulator
With Built-In VTTREF Buffer
1 Features
•1 5962R14288⁽¹⁾:
– Radiation Hardness Assurance (RHA)
Qualified to Total Ionizing Dose (TID) 100
krad(Si)
– Single Event Latch-Up (SEL), Single Event
Gate Rupture (SEGR), Single Event Burnout
(SEB) Immune to LET = 65 MeV-cm²/mg (See
Radiation Report for Details)
– SET, SEFI, SEU Immune to 65 MeV-cm²/mg
(See Radiation Report for Details)
• Supports DDR, DDR2, DDR3, DDR3LP, and
DDR4 Termination Applications and is Compliant
to JEDEC Standards
• Input Voltage: Supports a 2.5-V and 3.3-V Rail⁽²⁾
• Separate Low-Voltage Input (VLDOIN) Down to
.9 V for Improved Power Efficiency⁽²⁾
• 3-A Sink and Source Termination Regulator
Includes Droop Compensation
• 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
– ±20-mV Accuracy
• Integrated Precision Voltage Divider Network With
Sense Input
• Remote Sensing (VOSNS)
• VTTREF Buffered Reference
– VDDQ/2 ±1% Accuracy
– ±10-mA Sink and Source Current
• Undervoltage Lockout (UVLO), and Overcurrent
Limit (OCL) Functionality Integrated
2 Applications
• Single Board Computers, Solid-State Recorders,
and Payload Applications Where DDR, DDR2,
DDR3, and Low-Power DDR3 and DDR4 Memory
are Used
• Ultra-Fast Transient Power Applications
• Available in Military (–55°C to 125°C)
Temperature Range
• Engineering Evaluation (/EM) Components are
Available⁽³⁾
3 Description
The TPS7H3301-SP is a TID and SEE radiation-
hardened double data rate (DDR) 3-A termination
regulator with built-in VTTREF buffer. The regulator is
specifically design 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 TPS7H3301-SP supports and is compliant to
DDR, DDR2, DDR3, DDR4, and associated low-
power JEDEC specifications. The fast transient
response of the TPS7H3301-SP VTT regulator allows
for a very stable supply during read/write conditions. .
During transients, the fast tracking feature of the
VTTREF supply minimizes any voltage offset
between VTT and VTTREF. To enable simple power
sequencing, both an enable input and a power-good
output (PGOOD) have been integrated into the
TPS7H3301-SP. The PGOOD output is open-drain so
it can be tied to multiple open-drain outputs to
monitor when all supplies have come into regulation.
The enable signal can also be used to discharge VTT
during suspend to RAM (S3) power down mode.
PART NUMBER
TPS7H3301-SP
Device Information⁽¹⁾
PACKAGE
BODY SIZE (NOM)
CFP (16)
9.60 mm × 11.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
(2) Applicable to DDR2, DDR3, DDR3L and DDR4. For DDR,
input voltage = 3.3-V nominal. V_IN is 2.95 to 3.5 V for DDR1
and
V_LDOIN
>
V_TT
for
all
DDRs.
For DDR2 3-A load condition, V_IN is 2.45 to 3.5 V.
V_IN headroom: V_{IN_MIN} ≥ V_TT + 1.5 V.
(3) These units are intended for engineering evaluation only.
They are processed to a noncompliant flow (that is, no burn-
in, and so forth) and are tested to a temperature rating of
25°C only. These units are not suitable for qualification,
production, radiation testing or flight use. Parts are not
warranted for performance over the full MIL specified
temperature range of –55°C to 125°C or operating life.
Standard DDR Application
AGND
VDDQ
DDR ± 2.5 V
DDR2 ± 1.8 V
DDR3 ± 1.5 V
DDR3L ± 1.35 V
DDR4 ± 1.2 V
VTTREF = VDDQSNS / 2
TPS7H3301
1 VTTREF
VTTSNS 16
2 VDDQ
SNS
3 VLDOIN
AGND ¹⁵
VTT/Vo ₁₄
4 VLDOIN
5 VLDOIN
6 PGND
7 ^PGND
8 PGND
VTT/Vo 13
VTT/Vo 12
PGOOD 11 ^{POWER GOOD}
VDD/ ₁₀ 3.3-V or 2.5-V
Vin
Supply
EN 9
ENABLE
VTT / Vo = VDDQ / 2
AGND
PGND
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.