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AM4TW Series
4 watt dc-dc converters
24-PIN DIP PACKAGE
LOW PROFILE METAL PACKAGE
HIGH EFFICIENCY UP TO 80%
WIDE 4:1 INPUT RANGE
INPUT/OUTPUT ISOLATION: 1500 & 3500VDC
OPERATING TEMPERATURE: -40C ... +85C
PIN-COMPATIBLE WITH MULTIPLE MANUFACTURERS
CONTINUOUS SHORT CIRCUIT PROTECTION
GENERAL DESCRIPTION
Our AM4TW series is a family of cost effective 4W single and dual
output DC-DC converters. These converters combine a nickel-
coated copper package in a 24-pin DIP compatible case with high
performance features such as 1500 & 3500VDC input/output isola-
tion voltage, continuous short circuit protection with automatic
restart and tight line / load regulation. Wide range devices operate
over 4:1 input voltage range providing stable output voltage.
Devices are encapsulated using flame retardant resin. Input
voltages of 24 & 48VDC with output voltages of 3.3, 5, 7.2, 9, 12,
15, 18, 24, 3.3, 5, 7.2, 9, 12, 15, 18 & 24VDC. High
performance features include high efficiency operation up to 80%
and output voltage accuracy of 1% maximum. All models are
packaged in a low profile 31.75x20.32x10.16mm 24 pin DIP
nickel-coated copper case. Operation is specified over the full
operating temperature range of -40C to +85C with no derating
required. Cooling is by free-air convection.
ELECTRICAL SPECIFICATIONS
Specifications typical at +25C, nominal input voltage, rated output current unless otherwise specified
General Specifications:
Efficiency
75% to 80%
Switching Frequency
250 KHz, typ. 100%load
Input Specifications:
Voltage range
24 VDC, 9~36 VDC
48 VDC, 18~72 VDC
Filter
p
(Pi) Network
Physical Specifications:
Dimensions
31.75x20.32x10.16 mm
1.25x0.8x0.4 inches
Weight
26 g
Case material
Nickel-Coated Copper
Output Specifications:
Voltage accuracy
1%, max.
Voltage balance (Dual Output) 1%
Ripple & noise (at 20MHz BW)
60mVp-p, max.
Short circuit protection
Continuous
Short circuit restart
Automatic
Line voltage regulation
0.5%, max.
Load voltage regulation
0.5%, max.
Temperature Coefficient
0.02%/C, typ.
MTBF: >1,211,000 hrs (MIL-HDBK-217F, Ground Benign, t=+25C)
Specifications are subject to change without notification
Isolation Specifications:
Rated voltage
1500 & 3500 VDC
Resistance
> 1000 MOhm
Capacitance
80pF, typ.
Environmental Specifications:
Operating temperature (ambient) -40C to +85C
Storage temperature
-55C to +125C
Case temperature
+100C, max.
Derating
None required
Humidity (non-condensing)
Up to 90%
Cooling
Free-air Convection
DC-DC CONVERTERS
OUTLINE DIMENSIONS
& PIN CONNECTIONS
Pin
1500VDC
Single
Dual
+V Input
N.C.
N.C.
Omitted
-V Output
+V Output
-V Input
+V Output
-V Output
Omitted
N.C.
N.C.
+V Input
+V Input
-V Output
Common
Omitted
Common
+V Output
-V Input
+V Output
Common
Omitted
Common
-V Output
+V Input
Omitted
-V Input
-V Input
N.C.
Omitted
N.C.
Omitted
+V Output
Omitted
-V Output
+V Input
+V Input
Omitted
Omitted
-V Input
-V Input
Common
Omitted
-V Output
Omitted
+V Output
Omitted
Common
+V Input
+V Input
Omitted
1
2
3
9
10
11
12/13
14
15
16
22
23
24
3500VDC
Single
Dual
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