TPS7H3301-SP Texas instruments

TPS7H3301-SP

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TPS7H3301-SP

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Описание

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 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 TPS7H3301-SP supports DDR VTT termination applications using DDR, DDR2, DDR3, DDR4. 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/Vo 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/Vo during suspend to RAM (S3) power down mode.

5962R14228⁽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 = 70 MeV-cm²/mg⁽²⁾
- Single event transient (SET), single event functional interrupt (SEFI), and single event upset (SEU) characterized to 70 MeV-cm²/mg⁽²⁾
Supports DDR, DDR2, DDR3, DDR3L, and DDR4 termination applications
Input voltage: supports a 2.5-V and 3.3-V rail⁽³⁾
Separate low-voltage input (VLDOIN) down to
0.9 V for improved power efficiency⁽³⁾
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
Integrated precision voltage divider network with sense input
Remote sensing (VTTSNS)
VTTREF buffered reference
- ±15-mV accuracy
- ±10-mA sink and source current
Undervoltage lockout (UVLO) and overcurrent limit (OCL) functionality integrated

DDR memory type	DDR2, DDR3, DDR4
Control mode	S3, S4/S5
Iout VTT (max) (A)	3
Iq (typ) (mA)	18
Output	VREF, VTT
Vin (min) (V)	0.9
Vin (max) (V)	3.5
Features	Complete Solution, Shutdown Pin for S3
Rating	Space
Operating temperature range (°C)	-55 to 125, 25 to 25
Regulator type	Linear Regulator
Vin bias (max) (V)	3.5
Vin bias (min) (V)	2.375
Vout VTT (min) (V)	0.6