BEL X7AH

NON-ISOLATED DC/DC CONVERTER
4.5V-32V Input
1.2V-3.3V/1A Output
x7AH-01H1A0
•
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
Input Voltage (continuous)
Min
-0.3V
Typ
-
Max
34V
Output Enable Terminal Voltage
-0.3V
-
12V
Ambient Temperature
-40°C
-
85°C
Storage Temperature
-40°C
-
125°C
Notes
Input Specifications
Parameter
Min
Typ
Max
4.5V
20V
32V
Input Current (no load)
Input Current (full load)
-
5mA
8mA
VO=3.3V
VO=2.5V
VO=1.8V
VO=1.5V
VO=1.2V
Remote Off Input Current
Input Reflected Ripple Current
(pk-pk)
Input Reflected Ripple Current
(RMS)
2
I t Inrush Current Transient
-
2mA
0.20A
0.16A
0.12A
0.11A
0.09A
5mA
-
300mA
420mA
-
100mA
160mA
-
0.02A s
0.1A s
Turn on Voltage Threshold
-
4.1V
4.5V
Turn off Voltage Threshold
-
3.3V
4.0V
Input Voltage
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
2
Note: All specifications are typical 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
Output Specifications
Parameter
Output Voltage Set Point
Min
Typ
Max
VO=3.3V
VO=2.5V
VO=1.8V
VO=1.5V
VO=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
VO=3.3V
VO=2.5V
VO=1.8V
VO=1.5V
VO=1.2V
-
±3mV
±2mV
±2mV
±1mV
±1mV
±6mV
±5mV
±4mV
±3mV
±2mV
VO=3.3V
VO=2.5V
VO=1.8V
VO=1.5V
VO=1.2V
-
±3mV
±2mV
±2mV
±1mV
±1mV
±6mV
±5mV
±4mV
±3mV
±2mV
Line Regulation
Load Regulation
Regulation Over Temperature
(-40°C to +85°C)
Output Current
-
±10mV
±20mV
0A
-
1A
Current Limit Threshold
2A
-
-
0.02A s
Short Circuit Surge Transient
2
0.1A s
-
6mV
10mV
Ripple and Noise (pk-pk)
-
60mV
100mV
Turn on Time
-
6mS
30mS
Overshoot at Turn on
-
2%
5%
0uF
-
400uF
-
80mV
150uS
80mV
150uS
70mV
120uS
70mV
120uS
60mV
100uS
60mV
100uS
60mV
100uS
60mV
100uS
60mV
100uS
60mV
100uS
120mV
200uS
120mV
200uS
110mV
160uS
110mV
160uS
100mV
130uS
100mV
130uS
100mV
130uS
100mV
130uS
100mV
130uS
100mV
130uS
Transient Response
Overshoot
50% ~ 100%
Max Load
Settling Time
Overshoot
100% ~ 50%
Max Load
Settling Time
Overshoot
50% ~ 100%
Max Load
Settling Time
Overshoot
100% ~ 50%
Max Load
Settling Time
Overshoot
50% ~ 100%
Max Load
Settling Time
Overshoot
100% ~ 50%
Max Load
Settling Time
Overshoot
50% ~ 100%
Max Load
Settling Time
Overshoot
100% ~ 50%
Max Load
Settling Time
Overshoot
50% ~ 100%
Max Load
Settling Time
Overshoot
100% ~ 50%
Max Load
Settling Time
VO=3.3V
VO=2.5V
VO=1.8V
VO=1.5V
VO=1.2V
Test conditions:
Vin=20V, Io=50% full load
3A
2
Ripple and Noise (RMS)
Output Capacitance
Notes
Test condition: 0-20MHz
BW
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
VO=3.3V
VO=2.5V
VO=1.8V
VO=1.5V
VO=1.2V
83%
80%
76%
73%
70%
86%
83%
79%
76%
73%
-
VO=3.3V
VO=2.5V
VO=1.8V
VO=1.5V
VO=1.2V
270KHz
190KHz
150KHz
130KHz
100KHz
290KHz
220KHz
170KHz
150KHz
120KHz
310KHz
250KHz
190KHz
170KHz
140KHz
1.2V
-
3.3V
Efficiency
Measured at Vin=20V, full load.
Switching Frequency
Output Trim Range
MTBF
Calculated Per Bell Core TR-332 (IO
=0.8A, Vin=20V; Ta = 25°C)
8,040,000 hours
Dimensions (surface mount)
Inches (L × W
Millimeters (L × W
Dimensions (vertical)
Inches (L × W
Millimeters (L × W
× H)
× H)
0.78 x 0.70 x 0.32
19.81 x 17.78 x 8.13
× H)
× H)
0.70 x 0.308 x 0.65
17.78 x 7.82 x 16.51
Weight
-
5.1g
Vo=1.2V when trim pin open.
-
Note: All specifications are typical at 20V input, full load at 25°C unless otherwise stated.
Control Specifications
Parameter
Remote On/Off
Min
Typ
Max
Signal Low (Unit On)
-0.3V
-
1V
Signal High (Unit Off)
2.8V
-
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
RTrimDown =
8.7
− 21.5
Vo − Vadj
Rtrimdown
Module
Trim
GND
RTrimUp =
17.2
Vadj − Vo
Vout
Module
Trim
Rtrimup
Note: Output voltage Vo=1.205V
GND
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
95.0%
90.0%
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
55.0%
50.0%
95.0%
90.0%
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
55.0%
50.0%
4.5V
20V
32V
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
4.5V
20V
32V
0.1
0.2 0.3
Vo = 3.3V
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%
4.5V
20V
32V
0.2
0.5 0.6
Vo = 2.5V
95.0%
90.0%
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
55.0%
50.0%
0.1
0.4
0.7
0.8
0.9
4.5V
20V
32V
0.1
1.0
0.2
0.3
Vo = 1.8V
0.4
0.5
0.6
0.7
0.8
0.9
1.0
Vo = 1.5V
95.0%
90.0%
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
55.0%
50.0%
4.5V
20V
32V
0.1
0.2
0.3 0.4
0.5
0.6
0.7 0.8
0.9
1.0
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.
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
bel
Pin Connections
Pin
Function
1
Remote On/Off (option)
2
Vin
3
Ground
4
Vout
5
Trim (option)
6
N/A
7
N/A
Pin Connections
bel
bel
Pin
Function
1
Remote On/Off (option)
2
Vin
3
Ground
4
Vout
5
Trim (option)
2004 Bel Fuse Inc. Specifications subject to change without notice. 112504
CORPORATE
FAR EAST
EUROPE
Bel Fuse Inc.
206 Van Vorst Street
Jersey City, NJ 07302
Tel 201-432-0463
Fax 201-432-9542
www.belfuse.com
Bel Fuse Ltd.
8F/ 8 Luk Hop Street
San Po Kong
Kowloon, Hong Kong
Tel 852-2328-5515
Fax 852-2352-3706
www.belfuse.com
Bel Fuse Europe Ltd.
Preston Technology Management Centre
Marsh Lane, Suite G7, Preston
Lancashire, PR1 8UD, U.K.
Tel 44-1772-556601
Fax 44-1772-888366
www.belfuse.com