en5310 Enpirion, en5310 Datasheet - Page 5

• Manufacturer Part Number: en5310
• Description: 1a Voltage Mode Synchronous Buck Pwm Dc-dc Converter With Integrated Inductor
• Manufacturer: Enpirion

Rev 1.01 – November 2006
Pin Descriptions
NOTES:
PIN
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
1
2
3
4
5
6
7
8
9
4. This pin is used for engineering test purposes and reserved for future use. Solder, but do not electrically connect
this pin to the PCB.
VSENSE
ENABLE
NAME
PGND
PGND
ROCP
AGND
VOUT
PVIN
AVIN
XOV
POK
XFB
VS2
VS1
VS0
NC
NC
NC
NC
NC
NC
SS
NO CONNECT – Do not electrically connect this pin to PCB. See Note 4.
External feedback voltage input. Option for programming the output voltage with a
resistor divider on V
Remote voltage sense input. Connect this pin to the load voltage at the point to be
regulated.
NO CONNECT – Do not electrically connect this pin to PCB. See Note 4.
NO CONNECT – Do not electrically connect this pin to PCB. See Note 4.
Enable input. An input high enables operation. An input low disables operation.
NO CONNECT – Do not electrically connect this pin to PCB. See Note 4.
Over-Voltage set-point input. When using an external voltage divider and the XFB pin.
When VS0, VS1 and VS2 are left OPEN or pulled high, an additional voltage divider
separate from the XFB pin is required to set the OVP set-point. In this mode, the OVP
function is disabled if this voltage divider is not present.
Power ground for the power stage circuits.
Voltage and power output.
NO CONNECT – Do not electrically connect this pin to PCB. See Note 4.
Power ground for the power stage circuits.
NO CONNECT – Do not electrically connect this pin to PCB. See Note 4.
Power voltage input for the power stage circuits.
Voltage select line 2 input. See Table 1.
Over-Current trip point adjust input. Used for adjusting the OCP trip point.
Voltage select line 1 input. See Table 1.
Analog voltage input for the controller circuits.
Analog ground for the controller circuits.
Voltage select line 0 input. See Table 1.
Power OK is an open drain transistor for power system state indication.
Soft-Start node. A capacitor is connected between this pin and AGND.
OUT
.
5
FUNCTION
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