NGA SERIES
Non-Isolated Wide Input DC/DC Converters
1
SELECTION GUIDE
Nominal Output
Input Voltage Current
Voltage
Output
Nominal
Input Current
@ Full Load
Power
Nominal
Consumption @ Efficiency
Shutdown
Min Full Min Nom Max Min Nom Max Min Max
Load Load VIN
VIN
VIN
VIN VIN
VIN
VIN VIN
Order Code
(V)
15
15
15
15
(V)
A
mA
mW
%
NGA10S15018S
NGA10S15025S
NGA10S15033S
1.8
2.5
3.3
5.0
0
0
0
0
2.0 847 280 160 0.5 4.8 16.1 89 81
2.0 1142 380 210 0.5 4.8 16.1 92 85
2.0 1478 480 269 0.5 4.8 16.1 94 88
2.0 1493 705 388 1.0 4.8 16.1 95 92
2
NGA10S15050S
1
INPUT CHARACTERISTICS
Parameter
Conditions
MIN
TYP
MAX
Units
Continuous operation
1.8,2.5 & 3.3V output types
Continuous operation NGA10S15050S
Continuous operation NGA10S15050SE Variable
1.8V output types
4.75
7.0
15
28
Voltage Range
VDC
15
15
29
49
48
99
28
28
3
FEATURES
■ Industry Standard Footprint
■ Short Circuit Protection
■ Efficiency to 95%
Reflected Ripple 2.5V output types
mA p-p
Current
3.3V output types
5.0V output types
1
■ Wide Input Range
OUTPUT CHARACTERISTICS
Parameter
Rated Power
Conditions
TA = –40°C to 85°C
MIN
TYP
MAX
10
Units
W
■ 1.8V, 2.5V, 3.3V & 5V Output
■ Operating Temperature Range
Voltage Set
–40°C to 85°C
1.5
0.2
5.0
%
Point Accuracy
■ SMD Construction
■ Optional Shutdown & Trim Pins
Low line to high line,
Line Regulation with external input/output capacitors,
refer to test circuit
0.5
%/%
10% load to 100% load,
Load Regulation with external input/output capacitors,
refer to test circuit
BW = DC to 20MHz
Ripple & Noise With external input/output capacitors,
refer to test circuit
1.5
40
2.0
70
%
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%.
mVp-p
ABSOLUTE MAXIMUM RATINGS
Short circuit protection
Internal power dissipation
Lead temperature 1.5mm from case for 10 seconds
Input Voltage VIN
Continuous
1.1W
300°C
28V
Minimum load
0%
Output Trim Control
0V to +5V relative to 0V
Shutdown Control
–0.3V to +28V relative to 0V
1
ENVIRONMENTAL
Parameter
Conditions
MIN
–40
–50
TYP
MAX Units
Operation
Storage
PCB Temperature above Ambient
85
°C
°C
°C
125
40
TERMINOLOGY
TRANSIENT RESPONSE
Time for VOUT to be within 1% of VNOM where VNOM
VOUT 25% +VOUT 75%
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.
1 Specifications typical at TA =25°C, nominal input voltage and rated output current unless otherwise specified.
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.
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