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FEATURES

■

Industry Standard Footprint

■

Short Circuit Protection

■

Efficiency to 95%

■

Wide Input Range

■

1.8V, 2.5V, 3.3V & 5V Output

■

Operating Temperature Range

–40°C to 85°C

■

SMD Construction

■

Optional Shutdown & Trim Pins

DESCRIPTION

The NGA series is a range of low profile

DC/DC converters offering a single regulated

output over a wide input voltage range. All

parts deliver the full output power up to 85°C

without the need for external heatsinking

while the synchronus rectification design

yields excellent efficiencies up to 95%.

Nominal Output

Output

Nominal

Power

Nominal

Input

Voltage

Current

Input Current

Consumption @ Efficiency

Voltage

@ Full Load

Shutdown

Min Full

Min Nom Max Min Nom Max Min Max

Order Code

(V)

(V)

A

mA

mW

%

NGA10S15018S

15

1.8

0

2.0 847 280 160 0.5 4.8 16.1 89

81

NGA10S15025S

15

2.5

0

2.0 1142 380 210 0.5 4.8 16.1 92

85

NGA10S15033S

15

3.3

0

2.0 1478 480 269 0.5 4.8 16.1 94

88

15

5.0

0

2.0 1493 705 388 1.0 4.8 16.1 95

92

Parameter

Conditions

MIN

TYP

MAX

Units

Continuous operation

Voltage Range

1.8,2.5 & 3.3V output types

4.75

15

28

VDC

Continuous operation NGA10S15050S

7.0

15

28

15

28

1.8V output types

29

Reflected Ripple 2.5V output types

49

mA p-p

Current

3.3V output types

48

5.0V output types

99

ABSOLUTE MAXIMUM RATINGS

NGA SERIES

Non-Isolated Wide Input DC/DC Converters

TERMINOLOGY

Parameter

Conditions

MIN

TYP

MAX

Units

Operation

– 40

85

°C

Storage

– 50

125

°C

PCB Temperature above Ambient

40

°C

Parameter

Conditions

MIN

TYP

MAX

Units

Rated Power

T

10

W

Voltage Set

±1.5

±5.0

%

Point Accuracy

Low line to high line,

Line Regulation with external input/output capacitors,

0.2

0.5

%/%

refer to test circuit

10% load to 100% load,

Load Regulation with external input/output capacitors,

1.5

2.0

%

refer to test circuit

BW = DC to 20MHz

Ripple & Noise With external input/output capacitors,

40

70

mVp-p

refer to test circuit

TRANSIENT RESPONSE

Time for V

V

2

OVER-SHOOT/UNDER-SHOOT

MAX deviation from final steady state output.

START DELAY

Typical rise time (ms) after control pin high with valid input.

2. If optional VADJ and SD pin are required (as indicated in the mechanical dimensions diagram) suffix the part

number with an E when ordering, i.e. NGA10S15050SE.

3. Supply voltage should exceed output voltage by 1.45V.

Short circuit protection

Continuous

Internal power dissipation

1.1W

Lead temperature 1.5mm from case for 10 seconds

300°C

28V

Minimum load

0%

Output Trim Control

0V to +5V relative to 0V

Shutdown Control

–0.3V to +28V relative to 0V