BD3533F | High Performance Regulators for PCs | Power Management ICs | ICs

Termination Regulators for DDR-SDRAMs

BD3533F

Data Sheet

Data Sheet (674K)

Technical Data

Package

RoHS

Application notes

Design Model

Quality information

FAQ

[ Product description ]

This IC is a termination regulator compatible with JEDEC DDR-SDRAM, which functions as a linear power supply incorporating an N-channel MOSFET and provides a sink / source current capability up to 1A respectively. A built-in high-speed OP-AMP specially designed offers an excellent transient response. Requires 3.3 volts or 5.0 volts as a bias power supply to drive the N-channel MOSFET. Has an independent reference voltage input pin (V_DDQ) and an independent feedback pin (V_TTS) to maintain the accuracy in voltage required by JEDEC, and offers an excellent output voltage accuracy and load regulation. Also has a reference power supply output pin (V_REF) for DDR-SDRAM or a memory controller. When EN pin turns to "Low", V_TT output becomes "Hi-Z" while V_REF output is kept unchanged, compatible with "Self Refresh" state of DDR-SDRAM.

Specifications
Input Voltage (V)	2.7 to 5.5
Output current	-
V_TTOutput current (A)	±1.0
V_REFOutput current (mA)	±20
Output Voltage (V)	0.75 to 1.25
Voltage precision	VREF±30mV
NRCS(soft start)	Yes
Thermal shut down	Recovery
UVLO	Yes
Over current protection	None
Timer Latch type short circuit protection	None
Package size(mm)	5.0×6.2×1.61

Features

・Incorporates a push-pull power supply for termination (V_TT)
・Incorporates a reference voltage circuit (V_REF)
・Incorporates an enabler
・Incorporates an under voltage lockout (UVLO)
・Incorporates a thermal shutdown protector (TSD)
・Operates with input voltage from 2.7 to 5.5 volts
・Compatible with Dual Channel (DDR-II)

*The contents described here are just outline for introduction.
Please obtain the specification sheets from us for thorough check before use.

Status Product

Part No.	Package (PDF)	Status *	RoHS	Constitution materials list	Packing Type	Unit Quantity	Minimum Packaging Quantity	Sales	Distribution Inventory
BD3533F-PE2	SOP8	Active	Yes		Embossed Tape And Reel	2500	2500	Inquiry