UR5516 Datasheet, PDF (2/9 Pages) Unisonic Technologies – 3A BUS TERMINATION REGULATOR

UR5516
PIN CONFIGURATION
LINEAR INTEGRATED CIRCUIT

VIN
1
GND 2
VREF
3
VOUT
4
8
VCNTL
VIN
1
7
VCNTL GND
2
6
VCNTL
VREF
3
5
VCNTL
VOUT
4
8 NC
7 NC
6
VCNTL
5 NC
SOP-8
HSOP-8


: Thermal Pad (Connected to GND plane for better heat dissipation)
NC: No Connection


5
4
TAB is VCNTL
3
2
1
VOUT
VREF
VCNTL
GND
VIN
TO -2 52-5/ TO-263-5


PIN DESCRIPTION
PIN NAME
V_IN
GND
V_CNTL
V_REF
V_OUT
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
as a reference voltage for the UTC UR5516. Connect this pin to a resistor divider,
I
between V_IN 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