AM1/4L-N Series
0.25 watt dc-dc converters
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SMD PACKAGE
UL94-VO PACKAGE
LOW RIPPLE & NOISE
EFFICIENCY UP TO 68%
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INPUT/OUTPUT ISOLATIONS OF 1000 & 3000VDC
OPERATING TEMPERATURE: -40°C ... +85°C
UNREGULATED
PIN-COMPATIBLE WITH MULTIPLE MANUFACTURERS
DC-DC CONVERTERS
GENERAL DESCRIPTION
Our AM1/4L-N series is a family of cost effective
1/4W single and dual output DC/DC converters.
These converters combine a miniature SMD pack-
age and high performance features such as a 1000 &
3000VDC input/output isolation voltages, continu-
ous short circuit protection and a tight line / load
regulation.
96 models operate from input voltages of 3.3, 5, 12 and
24VDC producing output voltages of 3.3, 5, 9, 12, 15,
24, ±5, ±9, ±12, ±15 & ±24VDC. Full SMD design
and a 100% production test of parameters ensures a
high reliability in this product.
ELECTRICAL SPECIFICATIONS
All specifications valid at nominal input voltage, full load and +25°C after warm-up time unless otherwise stated.
Input Specifications:
Voltage range
Filter
Isolation Specifications:
Rated voltage (60 sec)
Resistance
Capacitance
±10%
Capacitor
General Specifications:
Efficiency
Switching frequency (Single)
Switching frequency (Dual)
Output Specifications:
Voltage accuracy
Voltage balance (Dual Output)
Ripple & Noise
(at 20MHz BW)
Short circuit protection
Line voltage regulation
Load voltage regulation
Temperature coefficient
68%, typ.
100KHz, typ., 100% load
150KHz, typ., 100% load
1000 & 3000VDC
> 1000MOhm
60pF, typ.
±5%, max.
±2%
Environmental Specifications:
Operating temperature
(ambient)
-40°C ... +85°C
Storage temperature
-55°C ... +125°C
Case Temperature
+95°C, max.
Derating
None required
Humidity (non-condensing)
Up to 95%
Cooling
Free-air Convection
75m Vp-p, typ.
1 sec.
±1.2% max. for 1% of Vin
10% typ., (10...100% load)
±0.03%/°C, max.
Physical Specifications:
Dimensions (Single)
12.70x11.20x6.30mm
Dimensions (Dual)
15.30x11.20x6.30mm
Dimensions (S&D@3000VDC) 15.20x11.20x6.00mm
Weight
1.5g
Case material
UL94-VO Plastic
MTBF: > 3,500,000 hrs (MIL-HDBK-217F, Ground Benign, t=+25°C)
Specifications are subject to change without notification.
Continued on next page
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AM1/4L-N Series
MODELS
Single Output
@ 1000VDC
@ 3000VDC
Input Voltage
Output Voltage
Max. Output Current
AM1/4L-0303S-N
AM1/4L-0305S-N
AM1/4L-0309S-N
AM1/4L-0312S-N
AM1/4L-0315S-N
AM1/4L-0324S-N
AM1/4L-0503S-N
AM1/4L-0505S-N
AM1/4L-0509S-N
AM1/4L-0512S-N
AM1/4L-0515S-N
AM1/4L-0524S-N
AM1/4L-1203S-N
AM1/4L-1205S-N
AM1/4L-1209S-N
AM1/4L-1212S-N
AM1/4L-1215S-N
AM1/4L-1224S-N
AM1/4L-2403S-N
AM1/4L-2405S-N
AM1/4L-2409S-N
AM1/4L-2412S-N
AM1/4L-2415S-N
AM1/4L-2424S-N
AM1/4L-0303SH30-N
AM1/4L-0305SH30-N
AM1/4L-0309SH30-N
AM1/4L-0312SH30-N
AM1/4L-0315SH30-N
AM1/4L-0324SH30-N
AM1/4L-0503SH30-N
AM1/4L-0505SH30-N
AM1/4L-0509SH30-N
AM1/4L-0512SH30-N
AM1/4L-0515SH30-N
AM1/4L-0524SH30-N
AM1/4L-1203SH30-N
AM1/4L-1205SH30-N
AM1/4L-1209SH30-N
AM1/4L-1212SH30-N
AM1/4L-1215SH30-N
AM1/4L-1224SH30-N
AM1/4L-2403SH30-N
AM1/4L-2405SH30-N
AM1/4L-2409SH30-N
AM1/4L-2412SH30-N
AM1/4L-2415SH30-N
AM1/4L-2424SH30-N
5V±10%
12V±10%
24V±10%
OUTLINE DIMENSIONS & PIN CONNECTIONS - SINGLE @ 1000VDC
Pin
1
2
3
4
5
6
7
8
Single Output
-V Input
+V Input
N.C.
-V Output
+V Output
N.C.
N.C.
N.C.
Continued on next page
TO ORDER CALL 1-888-9-AIMTEC
DC-DC CONVERTERS
3.3V±10%
3.3VDC
5VDC
9VDC
12VDC
15VDC
24VDC
3.3VDC
5VDC
9VDC
12VDC
15VDC
24VDC
3.3VDC
5VDC
9VDC
12VDC
15VDC
24VDC
3.3VDC
5VDC
9VDC
12VDC
15VDC
24VDC
75mA
50mA
27mA
20mA
16mA
10mA
75mA
50mA
27mA
20mA
16mA
10mA
75mA
50mA
27mA
20mA
16mA
10mA
75mA
50mA
27mA
20mA
16mA
10mA
AM1/4L-N Series
MODELS
Dual Output
@ 1000VDC
@ 3000VDC
Input Voltage
Output Voltage
Max. Output Current
AM1/4L-0303D-N
AM1/4L-0305D-N
AM1/4L-0309D-N
AM1/4L-0312D-N
AM1/4L-0315D-N
AM1/4L-0324D-N
AM1/4L-0503D-N
AM1/4L-0505D-N
AM1/4L-0509D-N
AM1/4L-0512D-N
AM1/4L-0515D-N
AM1/4L-0524D-N
AM1/4L-1203D-N
AM1/4L-1205D-N
AM1/4L-1209D-N
AM1/4L-1212D-N
AM1/4L-1215D-N
AM1/4L-1224D-N
AM1/4L-2403D-N
AM1/4L-2405D-N
AM1/4L-2409D-N
AM1/4L-2412D-N
AM1/4L-2415D-N
AM1/4L-2424D-N
AM1/4L-0303DH30-N
AM1/4L-0305DH30-N
AM1/4L-0309DH30-N
AM1/4L-0312DH30-N
AM1/4L-0315DH30-N
AM1/4L-0324DH30-N
AM1/4L-0503DH30-N
AM1/4L-0505DH30-N
AM1/4L-0509DH30-N
AM1/4L-0512DH30-N
AM1/4L-0515DH30-N
AM1/4L-0524DH30-N
AM1/4L-1203DH30-N
AM1/4L-1205DH30-N
AM1/4L-1209DH30-N
AM1/4L-1212DH30-N
AM1/4L-1215DH30-N
AM1/4L-1224DH30-N
AM1/4L-2403DH30-N
AM1/4L-2405DH30-N
AM1/4L-2409DH30-N
AM1/4L-2412DH30-N
AM1/4L-2415DH30-N
AM1/4L-2424DH30-N
3.3V±10%
5V±10%
12V±10%
24V±10%
±3.3VDC
±5VDC
±9VDC
±12VDC
±15VDC
±24VDC
±3.3VDC
±5VDC
±9VDC
±12VDC
±15VDC
±24VDC
±3.3VDC
±5VDC
±9VDC
±12VDC
±15VDC
±24VDC
±3.3VDC
±5VDC
±9VDC
±12VDC
±15VDC
±24VDC
±38mA
±25mA
±14mA
±11mA
±9mA
±5mA
±38mA
±25mA
±14mA
±11mA
±9mA
±5mA
±38mA
±25mA
±14mA
±11mA
±9mA
±5mA
±38mA
±25mA
±14mA
±11mA
±9mA
±5mA
DC-DC CONVERTERS
OUTLINE DIMENSIONS & PIN CONNECTIONS - DUAL @ 1000VDC
Pin
1
2
3
4
5
6
7
8
9
10
Dual Output
-V Input
+V Input
N.C.
Common
-V Output
N.C.
+V Output
N.C.
N.C.
N.C.
TO ORDER CALL 1-888-9-AIMTEC
AM1/4L-N Series
OUTLINE DIMENSIONS & PIN CONNECTIONS
FOR SINGLE & DUAL @ 3000VDC
Pin
1
2
3
5
6
7
8
10
11
12
Single
-V Input
+V Input
N.C.
-V Output
N.C.
N.C.
+V Output
N.C.
N.C.
N.C.
Dual
-V Input
+V Input
N.C.
Common
-V Output
N.C.
+V Output
N.C.
N.C.
N.C.
Note: All Pins on a 2.54mm pitch; All Pin diameters are 0.50 mm
(Tolerance:±0.25); All dimensions in mm.
TYPICAL CHARACTERISTICS
SINGLE OUTPUT MODELS
APPLICATION NOTE
General Application
In regular circuits, our company’s DC/DC converters may be used directly without any peripheral components (see Figure
2). The basic input/output isolation may be used to provide a group of simple isolated polar output power supplies or to
generate power supply lines of different voltages.
Voltage And Polarity Inversion
A key performance of this DC/DC converter is high electric isolation capability. Thus, only one DC/DC converter may allow
for several potential differences in the layout of circuit board. If necessary, you may connect the output end of the positive
to input ground, then the negative output end will generate a negative voltage (see Figure 1).
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 filtering capacitor sees the External Capacitor Table. To get an extremely low
ripple, a “LC” filter 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” filter network
should be staggered with the DC/DC frequency to avoid mutual interference (see Figure 3).
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.
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
circuits.
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 stabilizer with
overheat protection that is connected to the input or output end in series (see Figure 4).
Product Reliability
The MTBF is the mean time between failures under full load. If the actual load is less than 20% of the rated load or greater
than the rated load, then this productís reliability will be greatly reduced.
Input Polarity Protection
Under normal conditions, this productís input circuit has no protection against polarity inversion; the solution is to connect
a diode in series at the input.
DUAL OUTPUT MODELS
TO ORDER CALL 1-888-9-AIMTEC
DC-DC CONVERTERS
