EP53A7LQI/EP53A7HQI

Ordering Information

Part Number

Comment

Package

EP53A7LQI

LOW VID Range

16-pin QFN T&R

EP53A7HQI

HIGH VID Range

16-pin QFN T&R

EVB-EP53A7LQI

EP53A7LQI Evaluation Board

EVB-EP53A7HQI

EP53A7HQI Evaluation Board

Pin Assignments (Top View)

Figure 3: EP53A7LQI Pin Out Diagram (Top View)

Figure 4: EP53A7HQI Pin Out Diagram (Top View)

Pin Description

PIN

NAME

FUNCTION

1, 15,

16

NC(SW)

NO CONNECT – These pins are internally connected to the common switching node 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 to the device.

2

PGND

Power ground. Connect this pin to the ground electrode of the Input and output filter

capacitors.

3

LLM

LLM ( Light load mode – “LLM”) pin. Logic-High enables automatic LLM/PWM and logic-

low places the device in fixed PWM operation.

4

VFB

NC

EP53A7LQI: Feed back pin for external resistor divider option.

EP53A7HQI: No Connect

5

VSENSE

Sense pin for preset output voltages. Refer to application section for proper configuration.

6

AGND

Analog ground. This is the quiet ground for the internal control circuitry, and the ground

return for external feedback voltage divider

7, 8

VOUT

Regulated Output Voltage. Refer to application section for proper layout and decoupling.

2

www.altera.com/enpirion

01543

October 11, 2013

Rev D