YNM05S05-G POWER ONE, YNM05S05-G Datasheet - Page 6

• Manufacturer Part Number: YNM05S05-G
• Description: Module DC-DC 1-OUT 0.7525V to 3.63V 5A 5-Pin SMD T/R
• Manufacturer: POWER ONE
• Type: Step Downr

Specifications of YNM05S05-G

• Package: 5SMD
• Output Current: 5 A
• Output Voltage: 0.7525 to 3.63 V
• Input Voltage: 5 V
• Number Of Outputs: 1
• Switching Regulator: Yes

Output Voltage Programming (Pin 3)
The output voltage can be programmed from
0.7525 V to 3.63 V by connecting an external resistor
between TRIM pin (Pin 3) and GND pin (Pin 4); see
Fig. D. Note that when a trim resistor is not
connected, the output voltage of the converter is
0.7525 V.
A trim resistor, R
can be calculated using the following equation:
where,
Note that the tolerance of a trim resistor directly
affects
recommended to use standard 1% or 0.5% resistors;
for tighter tolerance, two resistors in parallel are
recommended rather than one standard value from
Table 1.
Ground pin of the trim resistor should be connected
directly to the converter GND pin with no voltage
drop in between. Table 1 provides the trim resistor
values for popular output voltages.
MCD10190 Rev. 1.0, 21-Jun-10
Vin
R
R
V
T
TRIM
O
RIM
REQ
Fig. D: Configuration for programming output voltage.
V
0.7525
0-REG


3.63
1.0
1.2
1.5
1.8
2.0
2.5
3.3

Required value of trim resistor [k]
(V
Desired (trimmed) output voltage [V]
the
[V]
O
-
REQ
Table 1: Trim Resistor Value
21.07
ON/OFF
GND
Vin
-
output
0.7525)
R
TRIM
TRIM
80.02
41.97
23.08
15.00
11.78
open
6.95
3.16
2.21
[kΩ]
, for a desired output voltage
(Top View)
Converter
Y-Series

voltage
5.11
3.0-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 5 A
Standard Value [kΩ]
The Closest
Vout
TRIM
tolerance.
80.6
42.2
23.2
11.8
6.98
3.16
2.21
15
[k]
R
TRIM
It
Rload
Page 6 of 25
is
YNM05S05 DC-DC Converter Data Sheet
The output voltage can also be programmed by an
external voltage source. To make trimming less
sensitive,
recommended between the TRIM pin and the
programming voltage source. Control Voltage can be
calculated by the formula:
where,
voltage source; the value can be chosen depending
on the required output voltage range [k]
Control voltages with
shown in Table 2.
Protection Features
Input Undervoltage Lockout
Input undervoltage lockout is standard with this
converter. The converter will shut down when the
input voltage drops below a pre-determined voltage;
it will start automatically when Vin returns to a
specified range.
The input voltage must be typically 2.3 V for the
converter to turn on. Once the converter has been
turned on, it will shut off when the input voltage
drops below typically 2.2 V.
Output Overcurrent Protection (OCP)
The converter is protected against overcurrent and
short circuit conditions. Upon sensing an overcurrent
condition, the converter will enter hiccup mode. Once
over-load or short circuit condition is removed, Vout
will return to nominal value.
R
V
V
CTRL
CTRL
EXT
V
0.7525
0-REG


3.63

1.0
1.2
1.5
1.8
2.0
2.5
3.3
External resistor between TRIM pin and
0
Control voltage [V]
7 .
[V]
www.power-one.com

Table 2: Control Voltage [VDC]
a
(5.1
V
series
CTRL
1

0.700
0.658
0.624
0.573
0.522
0.488
0.403
0.268
0.212
R
(R
EXT
EXT
R
external
)(V
30.1
EXT
= 0)
O
-

REQ
0 and
-
V
0.7525)
CTRL
resistor
(R
-0.133
-0.468
-1.002
-1.223
R
0.700
0.535
0.401
0.201
0.000
EXT
EXT
= 15K)

Rext
15K are
[V]
is