GAPTEC LMT78_05-1.0R Datasheet

LMT78_1.0R Series

Wide input, non-isolated & regulated, single output, SMD package

Switching Regulator

Eciency up to 95%
No need for heat sinks

1.0AMP SMD package
Wide input voltage range
(4.75V - 36V)
Adjustable output voltage

Remote ON/OFF control
Short circuit protection (SCP),
thermal shutdown
Very low shutdown current
Super low ripple and noise
Meets IEC62368, UL62368,
EN62368 standards (pending)

Common specications

Cooling: Free air convection

Short circuit protection mode: Hiccup mode

Short circuit protection: Continuous, automatic recovery

Operating temperature range: -40°C ~ +85°C

Storage temperature range: -55°C ~ +125°C

Lead temperature: 300°C MAX, 1.5mm from case for 10 sec

Operating case temperature: 100°C MAX

Reow Soldering Temperature: Peak temp. ≤ 245°C,maximum duration

Storage humidity range: < 95%

Case material: Plastic [UL94-V0]

MTBF (MIL-HDBK-217F,+25°C): > 2,000,000 hours

Package weight: 1.5g

Dimensions: 15.24 * 11.40 * 8.25mm

Input specications

Item Test conditions Min Typ Max Units

No load input
current

Reverse polarity
input

Input lter Capacitor

Remote ON/OFF* • Module switch on

* The voltage of Remote ON/OFF pin is relative to pin GND.

Forbidden

• Module switch o

• Input current when
switched o

time ≤ 60s at 217°C. For actual
application, please refer to
IPC/JEDEC J-STD-020D.1

0.2 1.5 mA

suspended or connected to TTL
high level (3.2-8VDC)
pin connected to GND or low
level (0-0.8VDC)
30 100 µA

The LMT78_1.0R Series with high eciency switching regulators is an
ideally supply for space constrained mobile applications. There is no
need for any heat sink, even if operated at + 85°C. The additional
features include remote ON/OFF control and adjustable output
voltage.
Super low ripple and noise of typically only 10mV and a shutdown input
current of typically only 15uA.

Output specications

Item Test conditions Min Typ Max Units

Output voltage
accuracy

Line regulation Input voltage range at

Load regulation Nominal input, 10% to

Ripple + Noise* 20MHz bandwidth

Temperature
coecient

Transient response
deviation

Transient recovery
time

Vadj input voltage range ±10 %Vo

Switching
frequency

* Ripple and noise tested with “parallel cable” method, please refer to DC-DC

converter Application Notes for specic operation methods.

Example:

LMT78_05-1.0R
LM = Series; T = SMT case; yy = 5Vout; pp = 1.0A; R = Revised

Input voltage range at
full load

• 1.5/1.8/2.5/3.3VDC

• Others

full load

100% load

• 1.5/1.8/2.5VDC

• Others

1.5/1.8/2.5/3.3VDC

• 20% - 100% load

• < 20% load
Others

• 10% - 100% load

• < 10% load

- 40°C to + 85°C
ambient

Nominal input voltage,
25% load step change

Nominal input voltage,
25% load step change

Full load, nominal
input voltage

• LMT78_1.5-1.0R

• Others

±2

±4

±2

±3

±0.2 ±0.4 %

±1
±0.6%%

20

50

20

100

20

50

20

150

±0.03 %/°C

50 200 mV

0.2 1 ms

370
700

%
%

mVp-p
mVp-p

mVp-p
mVp-p

KHz
KHz

GAPTEC-Electronic GmbH & Co. KG

[e-mail] – www.gaptec-electronic.com

Note:

1. All specications measured at Ta = 25°C, humidity <75%, nominal input voltage
and rated output load unless otherwise specied.

2. In this datasheet, all the test methods of indications are based on corporate
standards.

Page 1 of 5

LMT78_1.0R – Rev. 2018-1.1

Specications subject to change without notice.

LMT78_1.0R Series

Wide input, non-isolated & regulated, single output, SMD package

EMC specications

EMI CE CISPR32/EN55032 CLASS B (see EMC recommended circuit, 2 )

EMI RE CISPR32/EN55032 CLASS B (see EMC recommended circuit, 2 )

EMS ESD IEC/EN61000-4-2 Contact ±4KV perf. Criteria B

EMS RS IEC/EN61000-4-3 10V/m perf. Criteria A

EMS EFT IEC/EN61000-4-4 ±1KV perf. Criteria B (see EMC recommended circuit, 1 )

EMS Surge IEC/EN61000-4-5 line to line ±1KV perf. Criteria B (see EMC recommended circuit, 1 )

EMS CS IEC/EN61000-4-6 3 Vr.m.s perf. Criteria A

Part Number Input Voltage [VDC]

LMT78_1.5-1.0R 12 4.75-32 1.5 1000 680 66

LMT78_1.8-1.0R 12 4.75-32 1.8 1000 680 69

LMT78_02-1.0R 12 4.75-32 2.5 1000 680 74

LMT78_03-1.0R 24 6.5-36 3.3 1000 680 80

LMT78_05-1.0R 24 8-36 5 1000 680 85

LMT78_6.5-1.0R 24 10-36 6.5 1000 680 86

LMT78_09-1.0R 24 13-36 9 1000 680 89

LMT78_12-1.0R 24 16-36 12 800 680 92

Note: For input voltage higher than 30VDC, a 22uF/50V input capacitor is required.

Nominal Range

Output Voltage

[VDC]

Output Current

[mA, Max]

Capacitive load

[µF, max]

Eciency

[Vin. max]

Typical characteristics

GAPTEC-Electronic GmbH & Co. KG

[e-mail] – www.gaptec-electronic.com

LMT78_1.0R – Rev. 2018-1.1

Page 2 of 5

Specications subject to change without notice.

LMT78_1.0R Series

Wide input, non-isolated & regulated, single output, SMD package

Eciency

LMT78_05-0.5R

Typical application circuit

LMT78_05-0.5R

Note:

1. C1 and C2 are required and should be connected close to the pin terminal
of the module.

2. The capacitance of C1 and C2 refer to table 1, it can be increased properly
if required, and tantalum or low ESR electrolytic capacitors may also
suce.

3. Cannot be used in parallel for output and hot swap.
To reduce the output ripple furtherly, it is suggested to connect a “LC”
lter at the output terminal, and recommended value of L is 10µH-47µH.

Part number C1

(ceramic capacitor)

LMT78_1.5-1.0R 10µF/50V 22µF/10V

LMT78_1.8-1.0R 10µF/50V 22µF/10V

LMT78_02-1.0R 10µF/50V 22µF/10V

LMT78_03-1.0R 10µF/50V 22µF/10V

LMT78_05-1.0R 10µF/50V 22µF/16V

LMT78_6.5-1.0R 10µF/50V 22µF/16V

LMT78_09-1.0R 10µF/50V 22µF/16V

LMT78_12-1.0R 10µF/50V 22µF/25V

Table 1

C2

(ceramic capacitor)

Ra1/Ra2

(Vadj resistance)

Refer to Vadj

resistance

calculation

GAPTEC-Electronic GmbH & Co. KG

[e-mail] – www.gaptec-electronic.com

LMT78_1.0R – Rev. 2018-1.1

Page 3 of 5

Specications subject to change without notice.

LMT78_1.0R Series

Wide input, non-isolated & regulated, single output, SMD package

LC lter application circuit

EMC solution-recommended circuit

Note: Part ① in the Fig. 4 is for EMS test, part ② is for EMI ltering; parts ① and ②
can be added based on actual requirement.

Application of Vadj and calculation of Vadj resistance

FUSE Selected based on the actual

input current from the customer

MOV S20K30

LDM1 82µH

C0 680µF/50V

C2 refer to Table 1

C1/C5 4.7µF/50V

LDM2 68µH

Vout (V) R1 (KΩ) R2 (KΩ) R3 (KΩ) Vref (V)

1.5 7.5 7.5 15 0.75

1.8 4.7 3.3 6.8 0.75

2.5 9.1 3.9 8.2 0.75

3.3 75 22 75 0.75

5 43 7.5 33 0.75

6.5 43 5.6 22 0.75

9 43 3.9 22 0.75

12 36 2.4 10 0.75

Note: The 1.5VDC output model only support Vadj up, do not support Vadj down.

GAPTEC-Electronic GmbH & Co. KG

[e-mail] – www.gaptec-electronic.com

LMT78_1.0R – Rev. 2018-1.1

Page 4 of 5

Specications subject to change without notice.

LMT78_1.0R Series

Wide input, non-isolated & regulated, single output, SMD package

Mechanical dimensions

Note:

Unit: mm[inch]
Pin selection tolerances: ±0.10mm [±0.004inch]
General tolerances: ±0.25mm [±0.010inch]

GAPTEC-Electronic GmbH & Co. KG

[e-mail] – www.gaptec-electronic.com

LMT78_1.0R – Rev. 2018-1.1

Page 5 of 5

Specications subject to change without notice.