En5311Q (Ic202, 805 : Hdmi B’d); En5311Q Block Diagram - Denon AVR-2310 Service Manual

EN5311Q (IC202, 805 : HDMI B'D)
Figure 2. Pin description, top view.
V (Pin 1,2): Input voltage pin. Supplies power
IN
to the IC. VIN can range from 2.4V to 5.5V.
Input GND: (Pin 3): Input power ground.
Connect this pin to the ground terminal of the
input capacitor.
Recommendations for further details.
Output GND: (Pin 4): Power ground.
output filter capacitor should be connected
between this pin and V
recommendations for further detail.
V (Pin 5,6,7): Regulated output voltage.
OUT
NC (Pin 8,9,10,11,12,13,14):
should not be electrically connected to each
other or to any external signal, voltage, or

EN5311Q Block Diagram

UVLO
Thermal Limit
Current Limit
ENABLE Soft Start
Refer to Layout
The
. Refer to Layout
OUT
These pins
Logic
(-)
PWM
Comp
(+)
Sawtooth
Generator
Compensation
Network
VREF
AVR-2310CI/2310/890, AVC-2310
ground. One or more of these pins may be
connected internally.
V (Pin 15): Sense pin for output voltage
SENSE
regulation. Connect V
voltage rail as close to the terminal of the
output filter capacitor as possible.
V (Pin 16): Feed back pin for external divider
FB
option. When using the external divider option
(VS0=VS1=VS2= high) connect this pin to the
center of the external divider. Set the divider
such that V = 0.603V.
FB
VS0,VS1,VS2 (Pin 17,18,19): Output voltage
select. VS0=pin19, VS1=pin18, VS2=pin17.
Selects one of seven preset output voltages or
choose external divider by connecting pins to
logic high or low. Logic low is defined as V
0.4V. Logic high is defined as V
Any level between these two values is
indeterminate.
ENABLE (Pin 20): Output enable. Enable =
logic high, disable = logic low. Logic low is
defined as V 0.2V. Logic high is defined
LOW
as V 1.4V. Any level between these two
HIGH
values is indeterminate.
Bottom Thermal Pad: Device thermal pad to
remove heat from package. Connect to PCB
surface ground pad and PCB internal ground
plane (see layout recommendations).
V
IN
P-Drive
N-Drive
(-) Switch
Error
Amp
(+)
DAC
Voltage
Select
VS0 VS1 VS2
72
to the output
SENSE
LOW
1.4V.
HIGH
V
OUT
GND
V
SENSE
V
FB
Package Boundry