EV1320QI Datasheet, PDF (2/20 Pages) Enpirion, Inc. – The EV1320QI is a DC to DC converter specifically designed for memory termination applications.

Ordering Information
Part Number
EV1320QI
EVB-EV1320QI
Package Markings
AUxx
AUxx
EV1320QI
Temp Rating (°C)
-40 to +85
Package Description
16-pin (3mm x 3mm x 0.55mm) QFN T&R
QFN Evaluation Board
Pin Assignments (Top View)
NC 1
AVIN 2
ENABLE ³
POK ⁴
SS 5
AGND 6
16 15
KEEP
OUT
7
8
14 C1P
13 C1P
12 _VOUT
11 _VOUT
10 C1N
9 _C1N
Figure 3: Pin Out Diagram (Top View)
NOTE A: Shaded area highlights exposed metal below the package that is not to be mechanically or electrically
connected to the PCB. Refer to Figure 10 for details.
NOTE B: White ‘dot’ on top left is pin 1 indicator on top of the device package.
Pin Description
PIN
1
2
3
4
5
6
7, 8
9,10
11,12
13,14
15,16
NAM E
NC
AVIN
ENABLE
POK
SS
AGND
PGND
C1N
VOUT
C1P
VDDQ
FUNCTION
This pin is internally not connected. May be used as part of the VDDQ copper to optimize the
layout. Otherwise, leave this pin open. See Figure 9.
Input Supply for internal controller and protection circuitry
Input Enable. Applying a logic high enables the output and initiates a soft-start. Applying a logic
low disables and discharges the output. ENABLE is internally tied to AVIN and ground through
a 100k resistor divider. Leaving ENABLE floating will result in voltage at half of AVIN.
VTT OK flag. This is an open drain output usually pulled up to AVIN. Leave floating if unused.
Soft Start pin. Connect soft start capacitor between this pin and AGND.
Quiet ground for analog circuitry. Connect to the ground plane with a via next to the pin.
Power ground. Connect these pins to the ground electrode of the input and output filter
capacitors. See layout recommendations for more details.
Place 1 x 22µF and 1 x 10µF X5R MLCC capacitors between C1N and C1P.
VTT voltage = ½ VDDQ.
Place 1 x 22µF and 1 x 10µF X5R MLCC capacitors between C1N and C1P.
VDDQ voltage; VOUT (VTT) tracks this voltage.
06831
October 11, 2013
www.altera.com/enpirion, Page 2
Rev B