UR5516 반도체 회로 부품 판매점
3A BUS TERMINATION REGULATOR
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 Unisonic Technologies |
www.DataSheet4U.com
UNISONIC TECHNOLOGIES CO., LTD
UR5516
LINEAR INTEGRATED CIRCUIT
3A BUS TERMINATION
REGULATOR
SOP-8
DESCRIPTION
The UTC UR5516 is designed to provide a regulated voltage with
bi-directional output current for DDR-SDRAM termination.
Current-limit work to limit the short-circuit current, on-chip thermal
shutdown provides protection against any combination of overload
that would create excessive junction temperature. The output voltage
tracks the voltage at VREF pin. A resistor divider connected to VIN,
GND and VREF pins is used to provide a half voltage of VIN to VREF
pin. In addition, an external ceramic capacitor and an open-drain
transistor connected to VREF pin provides soft-start and shutdown
control respectively. Pulling and holding the VREF to GND shuts off
the output. The output of UTC UR5516 will be high impedance after
being shut down by VREF or thermal shutdown function.
FEATURES
* Provide bi-direction current
- Sourcing or sinking current up to 3A
* 1.25V/0.9V output for DDR I/II applications
* Fast transient response
* High output accuracy
- ±20mv over load, VOUT offset and temperature
* Adjustable output voltage by external resistors
* Current-limit protection
* On-chip thermal shutdown
* Shutdown for standby or suspend mode
HSOP-8
1 TO-252-5
1
TO-263-5
*Pb-free plating product number: UR5516L
ORDERING INFORMATION
Order Number
Normal
Lead Free Plating
UR5516-S08-R
UR5516L-S08-R
UR5516-S08-R
UR5516L-S08-R
UR5516-SH2-R
UR5516L-SH2-R
UR5516-SH2-R
UR5516L-SH2-R
UR5516-TN5-R
UR5516L-TN5-R
UR5516-TN5-T
UR5516L-TN5-T
UR5516-TQ5-R
UR5516L-TQ5-R
UR5516-TQ5-T
UR5516L-TQ5-T
Package
SOP-8
SOP-8
HSOP-8
HSOP-8
TO-252-5
TO-252-5
TO-263-5
TO-263-5
Packing
Tape Reel
Tube
Tape Reel
Tube
Tape Reel
Tube
Tape Reel
Tube
U5516L-S08-R
(1)Packing Type
(2)Package Type
(3)Lead Plating
(1) R: Tape Reel, T: Tube
(2) S08: SOP-8, SH2: HSOP-8, TN5: TO-252-5,
TQ 5: TO-263-5
(3) L: Lead Free Plating, Blank: Pb/Sn
www.unisonic.com.tw
Copyright © 2005 Unisonic Technologies Co., Ltd
1 of 9
QW-R101-015,B
UR5516
PIN CONFIGURATION
LINEAR INTEGRATED CIRCUIT
VIN
GND
VREF
VOUT
1
2
3
4
8 VCNTL
VIN 1
7
VCNTL
GND
2
6 VCNTL VREF 3
5 VCNTL VOUT 4
8
7
6
5
SOP-8
HSOP-8
: Thermal Pad (Connected to GND plane for better heat dissipation)
NC: No Connection
NC
NC
VCNTL
NC
TAB is VCNTL
5
4
3
2
1
VOUT
VREF
VCNTL
GND
VIN
TO -2 52-5/ TO-263-5
PIN DESCRIPTION
PIN NAME
VIN
GND
VCNTL
VREF
VOUT
I/O DESCRIPTION
Main power input pin. Connect this pin to a voltage source and an input capacitor. The
I UTC UR5516 sources current to VOUT pin by controlling the upper NPN pass transistor,
providing a current path from VIN pin.
Power and signal ground. Connect this pin to system ground plane with shortest traces.
O
The UTC UR5516 sinks current from VOUT pin by controlling the lower NPN pass
transistor, providing a current path to GND pin. This pin is also the ground path for
internal control circuitry.
Power input pin for internal control circuitry. Connect this pin to a voltage source,
I providing a bias for the internal control circuitry. A bypass capacitor is usually connected
near this pin.
Reference voltage input and active-low shutdown control pin. Apply a voltage to this pin
I
as a reference voltage for the UTC UR5516. Connect this pin to a resistor divider,
between VIN and GND, and a capacitor for soft-start and filtering noise purposes.
Applying and holding this pin low by an open-drain transistor to shut down the output.
Output pin of the regulator. Connect this pin to load. Output capacitors connected this pin
O improves stability and transient response. The output voltage tracks the reference
voltage and is capable of sourcing or sinking current up to 3A.
THERMAL DATA
PARAMETER
Thermal Resistance
SYMBOL
SOP-8
HSOP-8
TO-252-5
θJA
TO-263-5
RATINGS
160
80
80
50
UNIT
°C/W
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 9
QW-R101-015,B
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UR5516 regulator
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
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