Rev A

DCMAR1 SERIES

1A

DC/DC Switching Regulator

Single Outputs

3/9/2017

Wall Industries, Inc. • 37 Industrial Drive, Exeter, NH 03833 • Tel: 603-778-2300 • Toll Free: 888-597-9255 •

Fax 603-778-9797

website: www.wallindustries.com • e-mail: sales@wallindustries.com

Page 1 of 4

FEATURES

Circuit Protection

DESCRIPTION

The DCMAR1 series of DC/DC switching regulators offers 1A of output

current in a compact industrial 0.45” x 0.30” x 0.40” standard SIP-3 package.

This series consists of fully regulated single output models with low ripple &

noise and high efficiency. Each model in this series has no minimum load

requirement, over temperature and short circuit protection, and is RoHS &

REACH compliant. Please contact factory for order details.

Size: 0.45in x 0.30in x 0.40in (11.5mm x 7.55mm x 10.2mm)

MODEL SELECTION TABLE

Model Number

Input Voltage

Output

Voltage

Max. Output

Current

Ripple &

Noise

Max. Line

Regulation

Max. Load

Regulation

Maximum

Capacitive Load

Efficiency

@Min. Vin

@Max. Vin

DCMAR1-033

6.5~32VDC

3.3VDC

1000mA

50mVp-p

±0.4%

±0.6%

470µF

93%

87%

DCMAR1-05

6.5~32VDC

5VDC

1000mA

50mVp-p

±0.4%

±0.6%

470µF

94%

90%

DCMAR1-12

15~32VDC

12VDC

1000mA

75mVp-p

±0.2%

±0.4%

470µF

96%

94%

SPECIFICATIONS

All specifications are based on 25°C, Resistive Load, Nominal Input Voltage, and Rated Output Current unless otherwise noted.

We reserve the right to change specifications based on technological advances.

SPECIFICATION

TEST CONDITIONS

Min

Typ

Max

Unit

INPUT SPECIFICATIONS

Input Voltage Range

See Table

Input Surge Voltage

1 sec. max.

-0.3

34

VDC

Input Current

@No Load

1

mA

Short Circuit Input Power

1.5

W

Input Filter

All Models

Internal Capacitor

OUTPUT SPECIFICATIONS

Output Voltage

See Table

Voltage Accuracy

±2.0

%Vnom.

Line Regulation

Vin=Min. to Max. @Full Load

3.3V, 5V Models

±0.2

±0.4

%

12V Models

±0.1

±0.2

Load Regulation

Io=10% to 100%

3.3V, 5V Models

±0.4

±0.6

%

12V Models

±0.25

±.0.4

Output Current

See Table

Minimum Load

No Minimum Load Requirement

Maximum Capacitive Load

See Table

Ripple & Noise

0-20MHz Bandwidth

See Table

Transient Recovery Time

50% Load Step Change

250

µsec

Transient Response Deviation

50% Load Step Change

±2

%

Temperature Coefficient

±0.015

%/ºC

PROTECTION

Short Circuit Protection

Continuous, Automatic Recovery

Over Temperature Protection

Yes

ENVIRONMENTAL SPECIFICATIONS

Operating Ambient Temperature

Natural Convection

-40

+85

ºC

Storage Temperature

-55

+125

ºC

Case Temperature

+95

ºC

Humidity

Non-Condensing

95

%RH

Thermal Shutdown

Internal IC Junction

150

ºC

Natural Convection

Lead-Free Reflow Solder Process

1.5mm from case for 10sec.

260

ºC

MTBF (Calculated)

MIL-HDBK-217F@25ºC, Ground Benign

9,000,000

Hours

GENERAL SPECIFICATIONS

Efficiency

See Table

Switching Frequency

420

KHz