Rev.06.25.07

smt40c

2 of 4

Embedded Power for

Business-Critical Continuity

All specifications are typical at nominal input Vin = 12V, full load at 25

Specifications

OUTPUT SPECIFICATIONS

Voltage adjustability

(See Note 5)

0.9-5.0 Vdc

Output setpoint accuracy 1.0% trim resistors

±3.0%

Line regulation

Low line to high line

±0.2% max.

Load regulation

Full load to min. load

±1.5% max.

Min/max load

0 A/40 A

Overshoot

At turn-on

1.0% max.

Undershoot

At turn-off

100 mV max.

Ripple and noise

(See Note 1)

50 mV pk-pk

5 Hz to 20 MHz

15 mV rms

Transient response

75 mV max. deviation

(See Note 2)

50 μs recovery to

within regulation band

Current share

Full load

±10%

INPUT SPECIFICATIONS

Input voltage range

10.2-13.8 Vdc

Input current

Minimum load

290 mA

Remote OFF

30 mA

Input current (max.)

22 A max @ lo max

and Vin = 10.2 V

Input reflected ripple

(See Note 4)

150 mA pk-pk

Remote ON/OFF

Logic compatibility

Positive logic

ON

>2.4 Vdc

OFF

<0.8 Vdc

Start-up time

Power up

<30 ms

(See Note 8)

Remote ON/OFF

<30 ms

Turn ON threshold

9.0 Vdc typ.

Turn OFF threshold

7.6 Vdc typ.

GENERAL SPECIFICATIONS

Efficiency

92% typ.

Switching frequency

Fixed

300 kHz typ.

Approvals and

(See Note 7)

TÜV Product Services

standards

IEC60950, UL/cUL60950

Material flammability

UL94V-0

Weight

28.3 g (1.0 oz)

Coplanarity

150 μm

MTBF

Telcordia SR-332,

4,585,991 hours

method II @ 40 ºC

ENVIRONMENTAL SPECIFICATIONS

Thermal performance

Operating ambient,

0 °C to +80 °C

(See Note 9)

temperature

Non-operating

-40 °C to +125 °C

PROTECTION

Short-circuit

Foldback, non-latching

Over-temperature

Hiccup, non-latching

RECOMMENDED SYSTEM CAPACITANCE

Input capacitance

Output capacitance