NON-ISOLATED DC/DC CONVERTERS
4.5V-32V Input
1.2V-5.0V/1A Output
x7AH-01Hxx0
•
•
•
Non-Isolated
Remote On/Off
Series
•
•
•
OCP/SCP
Trim Function
Low profile package (7.82mm)
Input Under Voltage Lockout
(UVLO)
Description
The Bel x7AH-01Hxx0 series are part of the low cost non-isolated DC/DC converter series. These modules use
a SMD or vertical mount package for ease of layout and space savings. The output is closely regulated and the
efficiency of 5V output is typically 90% at full load. Typical features include remote on/off, input under voltage
lockout, over current protection and short circuit protection.
Part Selection
Output
Voltage
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
Input
Voltage
8.0 – 32V
4.5 – 32V
4.5 –32V
4.5 – 32V
4.5 – 32V
4.5 – 32V
Max. Output
Current
1A
1A
1A
1A
1A
1A
Max. Output
Power
5.0W
3.3W
2.5W
1.8W
1.5W
1.2W
Typical
Efficiency
90%
86%
83%
79%
76%
73%
Part Number
Surface Mount
S7AH-01H500
S7AH-01H330
S7AH-01H250
S7AH-01H180
S7AH-01H150
S7AH-01H120
Part Number
Vertical Mount
V7AH-01H500
V7AH-01H330
V7AH-01H250
V7AH-01H180
V7AH-01H150
V7AH-01H120
Note:
Add “0” suffix at the end of the model number to indicate “Tube Packaging”, and “R” for “Reel
Packaging”, and “G” for “Tray Packaging”.
Absolute Maximum Ratings
Parameter
Input Voltage (continuous)
Output Enable Terminal Voltage
Ambient Temperature
Storage Temperature
Min
-0.3V
-0.3V
-40°C
-40°C
Typ
-
-
-
-
Max
34V
12V
85°C
125°C
Notes
Input Specifications
Parameter
Input Voltage
V
O
=5.0V
V
O
=1.2V-3.3V
Input Current (no load)
Input Current (full load)
V
O
=5.0V
V
O
=3.3V
V
O
=2.5V
V
O
=1.8V
V
O
=1.5V
V
O
=1.2V
Remote Off Input Current
Min
8.0V
4.5V
-
-
-
-
-
-
-
-
Typ
20V
20V
5mA
-
-
-
-
-
-
2mA
Max
32V
32V
8mA
0.30A
0.20A
0.16A
0.12A
0.11A
0.09A
5mA
Notes
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
4.5V-32V Input
1.2V-5.0V/1A Output
Input Specifications (continued)
Parameter
Input Reflected Ripple Current
(pk-pk)
Input Reflected Ripple Current
(RMS)
I t Inrush Current Transient
Turn on Voltage Threshold
V
O
=5.0V
V
O
=1.2V-3.3V
Turn off Voltage Threshold
V
O
=5.0V
V
O
=1.2V-3.3V
2
Min
-
-
-
-
-
-
-
Typ
300mA
100mA
0.02A s
5.0V
4.1V
3.6V
3.3V
2
Max
420mA
160mA
0.1A s
7.0V
4.5V
5.0V
4.0V
2
Notes
Tested with simulated source impedance of 500nH,
5Hz to 20MHz and one 100uF/50V electrolytic
capacitor and a 3.3uF/50V ceramic capacitor at the
input
Note:
All specifications are typical at 25
°C
unless otherwise stated.
Output Specifications
Parameter
Output Voltage Set Point
V
O
=5.0V
V
O
=3.3V
V
O
=2.5V
V
O
=1.8V
V
O
=1.5V
V
O
=1.2V
Line Regulation
V
O
=5.0V
V
O
=3.3V
V
O
=2.5V
V
O
=1.8V
V
O
=1.5V
V
O
=1.2V
Load Regulation
V
O
=5.0V
V
O
=3.3V
V
O
=2.5V
V
O
=1.8V
V
O
=1.5V
V
O
=1.2V
Regulation Over Temperature
(-40°C to +85°C)
Output Current
Current Limit Threshold
Short Circuit Surge Transient
Ripple and Noise (RMS)
Ripple and Noise (pk-pk)
Turn on Time
Overshoot at Turn on
Output Capacitance
-
-
-
-
-
-
-
0A
2A
-
-
-
-
-
0uF
-
-
-
-
-
-
Min
4.90V
3.234V
2.450V
1.764V
1.470V
1.176V
Typ
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
±5mV
±3mV
±2mV
±2mV
±1mV
±1mV
±5mV
±3mV
±2mV
±2mV
±1mV
±1mV
±10mV
-
-
0.02A s
6mV
60mV
6mS
2%
-
2
Max
5.10V
3.366V
2.550V
1.836V
1.530V
1.224V
±10mV
±6mV
±5mV
±4mV
±3mV
±2mV
±10mV
±6mV
±5mV
±4mV
±3mV
±2mV
±20mV
1A
3A
0.1A s
10mV
100mV
30mS
5%
400uF
2
Notes
Test conditions:
Vin=20V, Io=50% full load
Test condition: 0-20MHz
BW
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
4.5V-32V Input
1.2V-5.0V/1A Output
Output Specifications (continued)
Parameter
Transient Response
50% ~ 100%
Max Load
100% ~ 50%
Max Load
50% ~ 100%
Max Load
100% ~ 50%
Max Load
50% ~ 100%
Max Load
100% ~ 50%
Max Load
50% ~ 100%
Max Load
100% ~ 50%
Max Load
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
V
O
=1.2V -
1.8V
V
O
=2.5V
V
O
=3.3V
V
O
=5.0V
Min
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Typ
140mV
100uS
140mV
100uS
80mV
150uS
80mV
150uS
70mV
120uS
70mV
120uS
60mV
100uS
60mV
100uS
Max
170mV
130uS
170mV
130uS
120mV
200uS
120mV
200uS
110mV
160uS
110mV
160uS
100mV
130uS
100mV
130uS
Test conditions:
di/dt = 0.5A/uS; Vin = 20V
Notes
Note:
All specifications are typical at 20V input, full load at 25
°C
unless otherwise stated.
General Specifications
Parameter
Efficiency
V
O
=5.0V
V
O
=3.3V
V
O
=2.5V
V
O
=1.8V
V
O
=1.5V
V
O
=1.2V
Switching Frequency
V
O
=5.0V
V
O
=3.3V
V
O
=2.5V
V
O
=1.8V
V
O
=1.5V
V
O
=1.2V
Output Trim Range
MTBF
Dimensions (surface mount)
Inches (L
×
W
Millimeters (L
×
W
Dimensions (vertical)
Inches (L
×
W
Millimeters (L
×
W
Weight
×
H)
×
H)
×
H)
×
H)
-
130KHz
270KHz
190KHz
150KHz
130KHz
100KHz
90%Vo
150KHz
290KHz
220KHz
170KHz
150KHz
120KHz
-
8,040,000 hours
0.78 x 0.70 x 0.32
19.81 x 17.78 x 8.13
0.70 x 0.308 x 0.65
17.78 x 7.82 x 16.51
5.1g
-
170KHz
310KHz
250KHz
190KHz
170KHz
140KHz
110%Vo
Calculated Per Bell Core TR-332 (I
O
=
0.8A, Vin=20V; T
a
= 25°C)
87%
83%
80%
76%
73%
70%
90%
86%
83%
79%
76%
73%
-
-
-
-
-
-
Measured at Vin=20V, full load
Min
Typ
Max
Notes
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
4.5V-32V Input
1.2V-5.0V/1A Output
Control Specifications
Parameter
Remote On/Off
Signal Low (Unit On)
Signal High (Unit Off)
Min
-0.3V
2.8V
Typ
-
-
Max
1V
12V
Notes
Remote on/off pin open, unit on.
Output Trim Equations
Equations for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) and the nominal
output voltage of the converter (Vo) are shown below. The Trim Down resistor should be connected between the
Trim pin and Vout. The Trim Up resistor should be connected between the Trim pin and Ground. Only one of the
resistors should be used for any given application.
Vout
R
TrimDown
A
=
−
B
V
o
−
V
adj
Rtrimdown
Module
Trim
GND
R
TrimUp
C
=
−
D
V
adj
−
V
o
Vout
Module
Trim
Rtrimup
GND
Vo
5.0
3.3
2.5
1.8
1.5
1.2
A
153.56
53.80
36.70
21.70
15.20
8.70
B
85.20
21.50
21.50
21.50
21.50
21.50
C
29.20
17.20
17.20
17.20
17.20
17.20
D
48.70
X
X
X
X
X
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
4.5V-32V Input
1.2V-5.0V/1A Output
Efficiency Data
100.0%
95.0%
90.0%
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
55.0%
50.0%
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
8V
20V
32V
95.0%
90.0%
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
55.0%
50.0%
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
4.5V
20V
32V
x7AH-01H500
95.0%
90.0%
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
55.0%
50.0%
0.1
0.2 0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
x7AH-01H330
95.0%
90.0%
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
55.0%
50.0%
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
4.5V
20V
32V
4.5V
20V
32V
x7AH-01H250
95.0%
90.0%
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
55.0%
50.0%
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
95.0%
90.0%
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
55.0%
50.0%
0.1
0.2
x7AH-01H180
4.5V
20V
32V
4.5V
20V
32V
0.3 0.4
0.5
0.6
0.7 0.8
0.9
1.0
x7AH-01H150
x7AH-01H120
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
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