YM05S05 POWER ONE, YM05S05 Datasheet - Page 6

• Manufacturer Part Number: YM05S05
• Description: Module DC-DC 1-OUT 0.7525V to 3.63V 5A 5-Pin SMD
• Manufacturer: POWER ONE
• Type: Step Downr

Specifications of YM05S05

• Package: 5SMD
• Output Current: 5 A
• Output Voltage: 0.7525 to 3.63 V
• Input Voltage: 5 V
• Number Of Outputs: 1
• Product: Non-Isolated / POL
• Input Voltage Range: 4.5 V to 5.5 V
• Input Voltage (nominal): 5 V
• Output Current (channel 1): 5 A
• Package / Case Size: DIP
• Output Type: Regulated
• Package / Case: DIP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

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.
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.
ZD-01978 Rev. 3.2, 18-Jun-10
R
V
V
EXT
CTRL
CTRL
V
V
0.7525
0.7525
0-REG
0-REG


3.63
3.63

1.0
1.2
1.5
1.8
2.0
2.5
3.3
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]
[V]

Table 2: Control Voltage [VDC]
a
Table 1: Trim Resistor Value
(5.1
V
series
R
CTRL
1
TRIM
80.02
41.97
23.08
15.00
11.78

open
6.95
3.16
2.21
0.700
0.658
0.624
0.573
0.522
0.488
0.403
0.268
0.212
R
(R
[kΩ]
EXT
EXT
R
external
)(V
30.1
EXT
= 0)
O
3.0-5.5 VDC Input; 0.7525-3.63 VDC Programmable @ 5 A
-

REQ
Standard Value [kΩ]
0 and
-
V
0.7525)
The Closest
CTRL
resistor
80.6
42.2
23.2
11.8
6.98
3.16
2.21
(R
-0.133
-0.468
-1.002
-1.223
R
15
0.700
0.535
0.401
0.201
0.000
EXT
EXT
= 15K)

Rext
15K are
www.power-one.com
[V]
is
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.
Overtemperature Protection (OTP)
The
overtemperature condition to protect itself from
overheating caused by operation outside the thermal
derating curves, or operation in abnormal conditions
such as system fan failure. After the converter has
cooled to a safe operating temperature, it will
automatically restart.
Safety Requirements
The
International safety regulatory requirements per
UL60950 and EN60950. The maximum DC voltage
between any two pins is Vin under all operating
conditions. Therefore, the unit has ELV (extra low
voltage) output; it meets SELV requirements under
the condition that all input voltages are ELV.
The converter is not internally fused. To comply with
safety agencies requirements, a recognized fuse
with a maximum rating of 15 Amps must be used in
series with the input line.
Characterization
General Information
The converter has been characterized for many
operational aspects, to include thermal derating
(maximum load current as a function of ambient
temperature and airflow) for vertical and horizontal
mounting,
parameters, output ripple and noise, transient
response to load step-change, overload and short
circuit.
converter
converter
YM05S05 DC-DC Converter
efficiency,
Page 6 of 24
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Data Sheet
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