EN5396QI
Pin Descriptions
PIN
NAME
FUNCTION
NO CONNECT – This pin should not be electrically connected to any external signal, voltage,
or ground, but must be soldered to PCB. This pin may be connected internally.
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.
1-3
NC
4-5
NC(SW)
NO CONNECT – This pin should not be electrically connected to any external signal, voltage,
or ground, but must be soldered to PCB. This pin may be connected internally.
Regulated converter output. Connect these pins to the load and place output capacitor from
these pins the PGND pins 24-26.
6-13
NC
14-20
VOUT
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.
NO CONNECT – This pin should not be electrically connected to any external signal, voltage,
or ground, but must be soldered to PCB. This pin may be connected internally.
Output power ground. Refer to layout guideline section.
Input power supply. Connect to input power supply. Decouple with input capacitor to PGND.
NO CONNECT – This pin should not be electrically connected to any external signal, voltage,
or ground, but must be soldered to PCB. This pin may be connected internally.
Optional Over Current Protection adjust pin. Place ROCP resistor between this pin and AGND
(pin 40) to adjust the over current trip point.
21-22
23
NC(SW)
NC
24-29
30-35
PGND
PVIN
36-37
38
NC
ROCP
39
40
AVIN
AGND
Analog voltage input for the controller circuits. Connect this pin to the input power supply.
Analog ground for the controller circuits.
NO CONNECT – This pin should not be electrically connected to any external signal, voltage,
or ground, but must be soldered to PCB. This pin may be connected internally.
Feedback pin for external voltage divider network.
41-42
NC
43
44
XFB
XOV
Over voltage programming feedback pin.
NO CONNECT – This pin should not be electrically connected to any external signal, voltage,
or ground, but must be soldered to PCB. This pin may be connected internally.
Power OK is an open drain transistor for power system state indication. POK is a logic high
when VOUT is with -10% to +20% of VOUT nominal.
NO CONNECT – This pin should not be electrically connected to any external signal, voltage,
or ground, but must be soldered to PCB. This pin may be connected internally.
Soft-Start node. The soft-start capacitor is connected between this pin and AGND. The value
of this capacitor determines the startup timing.
45
46
47
48
NC
POK
NC
SS
49
50
EAIN
EAOUT
Optional Error Amplifier input. Allows for customization of the control loop.
Optional Error Amplifier output. Allows for customization of the control loop.
Output of the buffer leading to the error amplifier. Used for external modifications of the
compensation network.
Input Enable. Applying a logic high, enables the output and initiates a soft-start. Applying a
logic low disables the output.
51
52
COMP
ENABLE
PWM input/output. Used for optional master/slave configuration. When M/S pin is asserted
“low”, PWM will output the gate-drive PWM waveform. When the M/S pin is asserted “high”,
the PWM pin is configured as an input for PWM signal from the “master” device. PWM pin
can drive up to 3 slave devices.
NO CONNECT – This pin should not be electrically connected to any external signal, voltage,
or ground, but must be soldered to PCB. This pin may be connected internally.
Optional Master/Slave select pin. Asserting pin “low” places device in Master Mode for current
sharing. PWM pin (53) will output PWM drive signal. Asserting pin “high” will place the device
in Slave Mode. PWM pin (53) will be configured to input (receive) PWM drive signal from
“Master” device.
53
54
PWM
NC
55
M/S
NC
NO CONNECT – This pin should not be electrically connected to any external signal, voltage,
or ground, but must be soldered to PCB. This pin may be connected internally.
56-58
©Enpirion 2009 all rights reserved, E&OE
3
www.enpirion.com
02393
11/12/2009
Rev:C
ENPIRION [ ENPIRION, INC. ]
