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Электронный компонент: X7AH-01H1A0

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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 CONVERTER
4.5V-32V Input
1.2V-3.3V/1A Output

Non-Isolated
output
Remote
On/Off
Trim
function
OCP/SCP
Low profile package (7.82mm)
Under-voltage
lockout
(UVLO)
Description
The Bel x7AH-01H1A0 is part of the low cost non-isolated DC/DC converter series. The modules use a SMD or
vertical mount package for ease of layout and space savings. The output is widely trimmed from 1.2V to 3.3V.
Typical features include remote on/off, input under voltage lockout, over current protection and short circuit
protection.
Part Selection
Output
Voltage
Input
Voltage
Max. Output
Current
Max. Output
Power
Typical
Efficiency
Part Number
Surface Mount
Part Number
Vertical Mount
1.2V - 3.3V
4.5 - 32V
1A
3.3W 86%
S7AH-01H1A0
V7AH-01H1A0
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
Min
Typ
Max
Notes
Input Voltage (continuous)
-0.3V
-
34V
Output Enable Terminal Voltage
-0.3V
-
12V
Ambient Temperature
-40
C
-
85
C
Storage Temperature
-40
C
-
125
C
Input Specifications
Parameter
Min
Typ
Max
Notes
Input Voltage
4.5V
20V
32V
Input Current (no load)
-
5mA
8mA
Input Current (full load)
V
O
=3.3V
V
O
=2.5V
V
O
=1.8V
V
O
=1.5V
V
O
=1.2V
-
-
-
-
-
-
-
-
-
-
0.20A
0.16A
0.12A
0.11A
0.09A
Remote Off Input Current
-
2mA
5mA
Input Reflected Ripple Current
(pk-pk)
- 300mA
420mA
Input Reflected Ripple Current
(RMS)
- 100mA
160mA
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
I
2
t Inrush Current Transient
-
0.02A
2
s
0.1A
2
s
Turn on Voltage Threshold
-
4.1V
4.5V
Turn off Voltage Threshold
-
3.3V
4.0V
Note:
All specifications are typical at 25
C unless otherwise stated
.
x7AH-01H1A0
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 CONVERTER
4.5V-32V Input
1.2V-3.3V/1A Output

Output Specifications
Parameter
Min
Typ
Max
Notes
Output Voltage Set Point
V
O
=3.3V
V
O
=2.5V
V
O
=1.8V
V
O
=1.5V
V
O
=1.2V
3.234V
2.450V
1.764V
1.470V
1.176V
3.3V
2.5V
1.8V
1.5V
1.2V
3.366V
2.550V
1.836V
1.530V
1.224V
Test conditions:
Vin=20V, Io=50% full load
Line Regulation
V
O
=3.3V
V
O
=2.5V
V
O
=1.8V
V
O
=1.5V
V
O
=1.2V
-
-
-
-
-
3mV
2mV
2mV
1mV
1mV
6mV
5mV
4mV
3mV
2mV
Load Regulation
V
O
=3.3V
V
O
=2.5V
V
O
=1.8V
V
O
=1.5V
V
O
=1.2V
-
-
-
-
-
3mV
2mV
2mV
1mV
1mV
6mV
5mV
4mV
3mV
2mV
Regulation Over Temperature
(-40
C to +85C)
-
10mV
20mV
Output Current
0A - 1A
Current Limit Threshold
2A - 3A
Short Circuit Surge Transient
-
0.02A
2
s 0.1A
2
s
Ripple and Noise (RMS)
-
6mV
10mV
Ripple and Noise (pk-pk)
-
60mV
100mV
Test condition: 0-20MHz
BW
Turn on Time
-
6mS
30mS
Overshoot at Turn on
-
2%
5%
Output Capacitance
0uF
-
400uF
Transient Response
Overshoot
-
80mV
120mV
50% ~ 100%
Max Load
Settling Time
-
150uS 200uS
Overshoot
-
80mV
120mV
100% ~ 50%
Max Load
Settling Time
V
O
=3.3V
-
150uS 200uS
Overshoot
-
70mV
110mV
50% ~ 100%
Max Load
Settling Time
-
120uS 160uS
Overshoot
-
70mV
110mV
100% ~ 50%
Max Load
Settling Time
V
O
=2.5V
-
120uS 160uS
Overshoot
-
60mV
100mV
50% ~ 100%
Max Load
Settling Time
-
100uS 130uS
Overshoot
-
60mV
100mV
100% ~ 50%
Max Load
Settling Time
V
O
=1.8V
-
100uS 130uS
Overshoot
-
60mV
100mV
50% ~ 100%
Max Load
Settling Time
-
100uS 130uS
Overshoot
-
60mV
100mV
100% ~ 50%
Max Load
Settling Time
V
O
=1.5V
-
100uS 130uS
Overshoot
-
60mV
100mV
50% ~ 100%
Max Load
Settling Time
-
100uS 130uS
Overshoot
-
60mV
100mV
100% ~ 50%
Max Load
Settling Time
V
O
=1.2V
-
100uS 130uS
Test conditions:
di/dt = 0.5A/uS; Vin = 20V
Note:
All specifications are typical at 20V input, full load at 25
C
unless otherwise stated.
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 CONVERTER
4.5V-32V Input
1.2V-3.3V/1A Output
General Specifications
Parameter
Min
Typ
Max
Notes
Efficiency
V
O
=3.3V
V
O
=2.5V
V
O
=1.8V
V
O
=1.5V
V
O
=1.2V
83%
80%
76%
73%
70%
86%
83%
79%
76%
73%
-
-
-
-
-
Measured at Vin=20V, full load.
Switching Frequency
V
O
=3.3V
V
O
=2.5V
V
O
=1.8V
V
O
=1.5V
V
O
=1.2V
270KHz
190KHz
150KHz
130KHz
100KHz
290KHz
220KHz
170KHz
150KHz
120KHz
310KHz
250KHz
190KHz
170KHz
140KHz
Output Trim Range
1.2V
-
3.3V
Vo=1.2V when trim pin open.
MTBF
8,040,000 hours
Calculated Per Bell Core TR-332 (I
O
=0.8A, Vin=20V; T
a
= 25
C)
Dimensions (surface mount)
Inches (L W H)
Millimeters (L W H)
0.78 x 0.70 x 0.32
19.81 x 17.78 x 8.13
Dimensions (vertical)
Inches (L W H)
Millimeters (L W H)
0.70 x 0.308 x 0.65
17.78 x 7.82 x 16.51
Weight -
5.1g
-
Note:
All specifications are typical at 20V input, full load at 25
C
unless otherwise stated.
Control Specifications
Parameter
Min
Typ
Max
Notes
Remote On/Off
Signal Low (Unit On)
-0.3V
-
1V
Signal High (Unit Off)
2.8V
-
12V
Remote on/off pin open, unit on.

Output Trim Equations
Equations for calculating the trim resistor (in k) 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.
5
.
21
7
.
8
-
-
=
adj
o
TrimDown
V
V
R

o
adj
TrimUp
V
V
R
-
=
2
.
17
Note:
Output voltage Vo=1.205V
Module
Vout
Trim
GND
Rtrimdown
Module
Vout
Trim
GND
Rtrimup
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 CONVERTER
4.5V-32V Input
1.2V-3.3V/1A Output

Efficiency Data

50.0%
55.0%
60.0%
65.0%
70.0%
75.0%
80.0%
85.0%
90.0%
95.0%
0.1 0.2 0.3 0.4 0.5
0.6 0.7 0.8 0.9 1.0
4.5V
20V
32V
50.0%
55.0%
60.0%
65.0%
70.0%
75.0%
80.0%
85.0%
90.0%
95.0%
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
4.5V
20V
32V
Vo = 3.3V Vo = 2.5V
50.0%
55.0%
60.0%
65.0%
70.0%
75.0%
80.0%
85.0%
90.0%
95.0%
0.1 0.2 0.3
0.4 0.5 0.6 0.7
0.8 0.9 1.0
4.5V
20V
32V
50.0%
55.0%
60.0%
65.0%
70.0%
75.0%
80.0%
85.0%
90.0%
95.0%
0.1 0.2
0.3 0.4
0.5 0.6
0.7 0.8
0.9 1.0
4.5V
20V
32V
Vo = 1.8V Vo = 1.5V
50.0%
55.0%
60.0%
65.0%
70.0%
75.0%
80.0%
85.0%
90.0%
95.0%
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
4.5V
20V
32V
Vo = 1.2V






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 CONVERTER
4.5V-32V Input
1.2V-3.3V/1A Output


Thermal Derating Curve

















Test Condition
: Derating curve is tested at nominal input voltage.