Download Switching Regulator

Sink/Source DDR Termination Regulator
GS7901
Features
General Description

Input Voltage (VDD): Supports 2.5V Rail,
The GS7901 is a sink/source Double Data Rate
3.3V Rail and 5V Rail
(DDR) termination regulator. It is specifically

VTT_IN Voltage (VIN) Range: 1.0V to 3.6V
designed for low input voltage, low noise and low

EN Input
external component count systems where space

Remote Sensing (VTTS)
is a key application parameter.

PGOOD to Monitor Output Regulation
The GS7901 provides a fast load transient

±10mA Buffered Reference (VREF)
response and only requires a minimum output

REFIN Input Allows for Flexible Input
capacitance of 20uF.
Tracking Either Directly or Through
The GS7901 supports a remote sensing function
Resistor Divider
and regulated power required by DDR, DDR2,

Built-in Soft Start, UVLO, OCP and OTP
DDR3, DDR4 and low-power DDR3/DDR4 VTT

Supports DDR, DDR2, DDR3, DDR4 and
bus termination.
Low-Power DDR3/DDR4 VTT Applications
The GS7901 supplies an open-drain PGOOD

TDFN10-3x3 Package
output signal to monitor the output regulation

Green Product (RoHS, Lead-Free,
state. It also accepts an EN input signal to
Halogen-Free Compliant)
discharge VTT during EN pull low.
In addition, the GS7901 includes over current
Applications
limit and thermal shutdown to prevent the

Memory Termination Regulator for DDR,
regulator from damage. The built-in soft start
DDR2, DDR3, DDR4 and Low-Power
minimizes stress on the input power source by
DDR3/DDR4
reduction the

Notebook/Desktop/Server
start-up.

Telecom/Datacom, GSM Base Station,
The GS7901 is available in the thermally efficient
LCD-TV/PDP-TV, Copier/Printer, Set-Top Box
TDFN10-3x3 package.
capacitive
inrush
current
on
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1
Green Solution Technology Co.,LTD.
Rev.:0.6
1
Dec-14