ep53f8qi-t Enpirion, ep53f8qi-t Datasheet - Page 2

• Manufacturer Part Number: ep53f8qi-t
• Description: 1500 Ma Synchronous Buck Pwm Dc-dc Converter With Integrated Inductor
• Manufacturer: Enpirion

01542
Ordering Information
Pin Description
©Enpirion 2009 all rights reserved, E&OE
EP53F8QI-T
EP53F8QI-E
PIN
Part Number
13-14
15,16
2-3,
7,8
10
11
12
1,
4
5
6
9
ENABLE
NC(SW)
NAME
PGND
AVIN2
AGND
AVIN1
VOUT
PVIN
POK
VFB
NC
Temp Rating
-40 to +85
(°C)
QFN Evaluation Board
No Connect. These pins are internally connected to the common drain output of the internal
MOSFETs. NC(SW) pins are not to be electrically connected to any external signal,
ground, or voltage. However, they must be soldered to the PCB. Failure to follow this
guideline may result in part malfunction or damage.
Input/Output Power Ground. Connect these pins to the ground electrode of the input and
output filter capacitors. Refer to Layout Considerations section for details.
Analog input voltage. Connect to AVIN1 only.
Feedback Pin for External Voltage Divider Network. Connect a resistor divider to this pin to
set the output voltage. Use 100 kΩ, 1% or better for the upper resistor.
No Connect.
Voltage and Power Output. Connect these pins to output capacitor(s).
Analog Ground for the Controller Circuits
Analog Voltage Input for the Controller Circuits. Connect this pin to PVIN with a 10Ω
resistor. Connect a 1 uF capacitor between this pin and AGND. Connect AVIN2 to this pin.
Power OK with an Open Drain Outp t. Refer to Power OK section.
Input Enable. A logic high signal on this pin enables the output and initiates a soft start. A
logic low signal disables the output and discharges the output to GND. This pin must not be
left floating.
Input Power Supply. Connect to input supply. Decouple with input capacitor(s) to PGND.
16-pin QFN T&R
Package
Pin Assignments (Top View)
4/3/2009
2
FUNCTION
Figure 3: Pin Diagram (Top View)
www.enpirion.com
EP53F8QI
Rev:A