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AM1S-N Series
4PIN SIP PACKAGE
LOW RIPPLE & NOISE
HIGH EFFICIENCY UP TO 81%
UL94-VO PACKAGE
INPUT/OUTPUT ISOLATION: 1000 & 3000VDC
OPERATING TEMPERATURE: -40C ... +85C
PIN-COMPATIBLE WITH MULTIPLE MANUFACTURERS
GENERAL DESCRIPTION
Our AM1S-N series is a family of cost effective 1W single
output isolated DC/DC converters. These converters
achieve low cost and ultra-miniature SIP4 pin size without
compromising performance and reliability.
Twenty models operate from input voltages of 5, 12 &
24VDC; producing output voltage levels of 5, 9, 12 &
15VDC. Full SMD-design and a 100 % production test of
parameters ensures a high reliability in this product.
ELECTRICAL SPECIFICATIONS
Specifications typical at +25C, nominal input voltage, rated output current unless otherwise specified.
Input Specifications:
Voltage range
10%
Filter
Capacitor
Physical Specifications:
Dimensions
11.7x6.0x10.0mm
0.46x0.24x0.4inches
Weight
1.8g
Case material
Plastic UL94-VO
General Specifications:
Efficiency
78% to 81%
Switching frequency
150KHz, typ. 100% load
MTBF: > 1,000,000 hrs (MIL-HDBK-217F, Ground Benign, t=+25C)
Specifications are subject to change without notification
Isolation Specifications:
Rated voltage (60 sec)
1000 & 3000VDC
Resistance
> 1000MOhm
Capacitance
60pF, typ.
Environmental Specifications:
Operating temperature
(ambient)
-40C ... +85C
Storage temperature
-55C ... +125C
Case Temperature
+90C, max.
Derating
None required
Humidity (non-condensing)
Up to 90%
Cooling
Free-air Convection
1 watt dc-dc converters
Output Specifications:
Voltage accuracy
see tolerance
envelope graph
Ripple & noise (at 20MHz BW)
75mVp-p, typ
Short circuit protection
1 sec
Line voltage regulation
1.2% / 1.0% of Vin
Load voltage regulation
10% max,
load=10~100%
Temperature coefficient
0.03%/C, max.
OUTLINE DIMENSIONS & PIN CONNECTIONS
DC-DC CONVERTERS
1000 & 3000VDC
Pin
Continued on next page
1
2
3
4
Single
-V Input
+V Input
-V Output
+V Output
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MODELS
Single output
AM1S-N Series
DC-DC CONVERTERS
No Load power consumption 10% of nominal power (typical)
TYPICAL
CHARACTERISTICS
APPLICATION NOTE
Filtering
In some circuits which are sensitive to noise and ripple, a filtering capacitor may be added to the DC/DC output end and input end to reduce the noise
and ripple. However, the capacitance of the output filter capacitor must be proper. If the capacitance is too big, a startup problem might arise. For every
channel of output, provided the safe and reliable operation is ensured, the greatest capacitance of its filter capacitor sees the external capacitor table. To
get an extremely low ripple, an LC filtering network may be connected to the input and output ends of the DC/DC converter, which may produce a more
significant filtering effect. It should also be noted that the inductance and the frequency of the LC filtering network should be staggered with the DC/DC
frequency to avoid mutual interference (see figure 1).
Requirement On Output Load
To ensure this module can operate efficiently and reliably, a minimum load is specified for this kind of DC/DC converter in addition to a maximum load
(namely full load). During operation, make sure the specified range of input voltage is not exceeded, the minimum output load is not less than 10% of the
full load, and that this product should never be operated under no load! If the actual output power is very small, please connect a resistor with proper
resistance at the output end in parallel to increase the load.
C
C
Overload Protection
Under normal operating conditions, the
output circuit of these products has no
protection against over-current and short-
circuits. The simplest method is to connect
a self-recovery fuse in series at the input
end or add a circuit breaker to the circuit.
Output Voltage Regulation and
Over-voltage Protection Circuit
The simplest device for output voltage
regulation, over-voltage and over-current
protection is a linear voltage regulator with
overheat protection that is connected to the
input or output end in series (see Figure 2).
External Capacitor Table
Vin
Vout
External
Capacitor
External
Capacitor
5VDC
12VDC
24VDC
-
4.7uF
2.2uF
1uF
-
5VDC
9VDC
12VDC
15VDC
10uF
4.7uF
2.2uF
1uF
Models
Isolation 1000VDC
Isolation 3000VDC
Input Voltage
Ouput Voltage
Ouput Current max.
AM1S-0505S-N
AM1S-0509S-N
AM1S-0512S-N
AM1S-0515S-N
AM1S-1205S-N
AM1S-1209S-N
AM1S-1212S-N
AM1S-1215S-N
AM1S-2405S-N
AM1S-2409S-N
AM1S-2412S-N
AM1S-2415S-N
5VDC
9VDC
12VDC
15VDC
5VDC
9VDC
12VDC
15VDC
5VDC
9VDC
12VDC
15VDC
200mA
110mA
83mA
67mA
200mA
110mA
83mA
67mA
200mA
110mA
83mA
67mA
AM1S-0505SH30-N
AM1S-0509SH30-N
AM1S-0512SH30-N
AM1S-0515SH30-N
AM1S-1205SH30-N
AM1S-1209SH30-N
AM1S-1212SH30-N
AM1S-1215SH30-N
5V10%
12V10%
24V10%
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