109100518 Lineage Power, 109100518 Datasheet - Page 13

• Manufacturer Part Number: 109100518
• Description: Module DC-DC 1-OUT 0.75V to 4V 5A 5-Pin SMT T/R
• Manufacturer: Lineage Power
• Type: Non-Inverting|Inverting|Step Up|Step Downr

Specifications of 109100518

• Package: 5SMT
• Output Current: 5 A
• Output Voltage: 0.75 to 4 V
• Input Voltage: 3 to 5.8 V
• Number Of Outputs: 1

Data Sheet
October 2, 2009
Feature Description
Remote On/Off
The Austin MicroLynx
On/Off pin for remote On/Off operation of the module. If
not using the remote On/Off pin, leave the pin open
(module will be On). The On/Off pin signal (Von/Off) is
referenced to ground. To switch the module on and off
using remote On/Off, connect an open collector pnp
transistor between the On/Off pin and the V
Figure 29).
When the transistor Q1 is in the OFF state, the power
module is ON (Logic Low on the On/Off of the module)
and the maximum Von/off of the module is 0.4 V. The
maximum allowable leakage current of the transistor
when Von/off = 0.4V and V
logic-high when the transistor is in the active state, the
power module is OFF. During this state VOn/Off = 2.5V
to 5.8V and the maximum IOn/Off = 1mA.
Figure 29. Remote On/Off Implementation.
Remote On/Off can also be implemented using open-
collector logic devices with an external pull-up resistor.
Figure 30 shows the circuit configuration using this
approach. Pull-up resistor R
should be 5k (+/- 5%) for proper operation of module over
the entire temperature range.
Figure 30. Remote On/Off Implementation using
logic-level devices and an external pull-up resistor.
LINEAGE
Q1
ON/OFF
VIN+
GND
On/Off
I
V
On/Off
Pin
GND
IN
POWER
(+)
V
Q1
R
I
ON/OFF
pull-up
ON/OFF
+
_
14k
20k
Lynx-Series Module
TM
SMT power modules feature an
IN
= V
pull-up
R1
R2
IN,max
, for the configuration
3.0 – 5.8Vdc input; 0.75Vdc to 4.0Vdc Output; 5A output current
Enable
MODULE
is 10μA. During a
Css
PWM Enable
Q2
IN
pin (See
Austin MicroLynx
CSS
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 2A.
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
To provide over temperature protection in a fault
condition, the unit relies upon the thermal protection
feature of the controller IC. The unit will shutdown if the
thermal reference point T
the thermal shutdown is not intended as a guarantee that
the unit will survive temperatures beyond its rating. The
module will automatically restart after it cools down.
TM
SMT Non-isolated Power Modules:
ref
, exceeds 150
o
C (typical), but
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