CC109101268 Lineage Power, CC109101268 Datasheet - Page 12
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CC109101268
Manufacturer Part Number
CC109101268
Description
Module DC-DC 1-OUT 0.75V to 5.5V 3A 10-Pin SIP
Manufacturer
Lineage Power
Type
Step Downr
Datasheet
1.AXH010A0X3Z.pdf
(17 pages)
Specifications of CC109101268
Package
10SIP
Output Current
3 A
Output Voltage
0.75 to 5.5 V
Input Voltage
12 V
Number Of Outputs
1
Data Sheet
December 1, 2010
Feature Description
Remote On/Off
The Austin Lynx
pin for remote On/Off operation. The On/Off pin is pulled
high with an external pull-up resistor (typical Rpull-up =
68k, ± 5%) as shown in Fig. 28. When transistor Q1 is
in the Off state, logic High is applied to the On/Off pin
and the power module is Off. The minimum On/off
voltage for logic High on the On/Off pin is 1.5Vdc. To
turn the module ON, logic Low is applied to the On/Off
pin by turning ON Q1. When not using the negative
logic On/Off, leave the pin unconnected or tie to GND.
Figure 29. Circuit configuration for using negative
logic On/OFF.
Overcurrent Protection
To provide protection in a fault (output overload)
condition, the unit is equipped with internal
current-limiting circuitry and can endure current limiting
continuously. At the point of current-limit inception, the
unit enters hiccup mode. The unit operates normally
once the output current is brought back into its specified
range. The typical average output current during hiccup
is 3A.
Input Undervoltage Lockout
At input voltages below the input undervoltage lockout
limit, module operation is disabled. The module will
begin to operate at an input voltage above the
undervoltage lockout turn-on threshold.
Overtemperature Protection
equipped with a thermal shutdown circuit. The unit will
shutdown if the thermal reference point T
125
intended as a guarantee that the unit will survive
temperatures beyond its rating. The module will
automatically restarts after it cools down.
Output Voltage Programming
LINEAGE
To provide protection in a fault condition, the unit is
ON/OFF
VIN+
o
C (typical), but the thermal shutdown is not
GND
POWER
V
Q1
R
I
ON/OFF
pull-up
ON/OFF
+
_
TM
power modules feature an an On/Off
3.0Vdc – 5.5Vdc input; 0.75 to 3.63Vdc Output; 10A Output Current
R1
R2
Austin Lynx
MODULE
PWM Enable
ref
Q2
, exceeds
TM
CSS
SIP Non-isolated Power Modules, Programmable:
The output voltage of the Austin Lynx
programmed to any voltage from 0.75 Vdc to 3.3 Vdc by
connecting a single resistor (shown as Rtrim in Figure
31) between the TRIM and GND pins of the module.
Without an external resistor between the TRIM pin and
the ground, the output voltage of the module is 0.7525
Vdc. To calculate the value of the resistor Rtrim for a
particular output voltage Vo, use the following equation:
For example, to program the output voltage of the
Austin Lynx
follows:
Figure 31. Circuit configuration for programming
output voltage using an external resistor.
Table 1 provides Rtrim values for some common output
voltages
By using a 1% tolerance trim resistor, set point
tolerance of ±2% is achieved as specified in the
electrical specifications. The POL Programming Tool,
available at
Tools section, helps determine the required external
trim resistor needed for a specific output voltage
V
ON/OFF
IN
(+)
TM
www.lineagepower.com
Rtrim
GND
Rtrim
V
module to 1.8 Vdc, Rtrim is calculated is
0.7525
O, set
1.2
1.5
1.8
2.5
3.3
Rtrim
=
TRIM
=
V
O
(V)
(+)
Vo
1
Table 1
8 .
21070
−
21070
=
−
. 0
. 0
15
7525
7525
.
004
Rtrim (KΩ)
−
−
41.973
23.077
15.004
k
Open
6.947
3.160
5110
Ω
5110
under the Design
TM
R
trim
SIP can be
Ω
Ω
LOAD
12