BEL X7AH

NON-ISOLATED DC/DC CONVERTERS
3.0V-5.5V Input
1.0V-3.3V/12A Output
x7AH-12Fxx0 Series
•
Non-Isolated
•
OCP/SCP
•
Fixed frequency (300kHz)
•
Trim function (Option)
•
Low profile package (7.82mm)
•
Remote On/Off
•
Under-voltage lockout (UVLO)
•
Remote Sense (SMD module)
Description
The Bel x7AH-12Fxx0 series are part of the low cost non-isolated DC/DC converter series. These converters are
available in a range of output voltages from 1.0V to 3.3V. It is packaged in a compact, overmolded package
rated at 12A. The output is closely regulated and the efficiency of 3.3V output module is typically 93% at full load.
Typical features include remote on/off, input under voltage lockout, over current protection and short circuit
protection.
Part Selection
Output
Voltage
3.3V
Input
Voltage
4.5V – 5.5V
Max. Output
Current
12A
Max. Output
Power
39.6W
Typical
Efficiency
93%
Part Number
Surface Mount
S7AH-12F330
Part Number
Vertical Mount
V7AH-12F330
2.5V
3.6V – 5.5V
12A
30.0W
89%
S7AH-12F250
V7AH-12F250
1.8V
3.0V – 5.5V
12A
21.6W
87%
S7AH-12F180
V7AH-12F180
1.5V
3.0V – 5.5V
12A
18.0W
84%
S7AH-12F150
V7AH-12F150
1.2V
3.0V – 5.5V
12A
14.4W
82%
S7AH-12F120
V7AH-12F120
1.0V
3.0V – 5.5V
12A
12.0W
80%
S7AH-12F100
V7AH-12F100
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
6V
Output Enable Terminal Voltage
-0.3V
-
7V
Ambient Temperature
-40°C
-
85°C
Storage Temperature
-55°C
-
125°C
Notes
Input Specifications
Parameter
Min
Typ
Max
4.5V
3.6V
3.0V
-
120mA
5.5V
5.5V
5.5V
200mA
-
2mA
11A
10.5A
9.0A
8.1A
6.5A
5.2A
5mA
Notes
Input Voltage
VO=3.3V
VO=2.5V
VO=1.8-1.0V
Input Current (no load)
Input Current (full load)
VO=3.3V
VO=2.5V
VO=1.8V
VO=1.5V
VO=1.2V
VO=1.0V
Remote Off Input Current
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
3.0V-5.5V Input
1.0V-3.3V/12A Output
Input Specifications (continued)
Parameter
Min
Typ
Max
Input Reflected Ripple Current (pk-pk)
-
260mA
320mA
Input Reflected Ripple Current (RMS)
-
75mA
120mA
-
2
0.2A s
2.4V
2
I t Inrush Current Transient
Turn on Voltage Threshold
Turn off Voltage Threshold
-
0.09A s
2.1V
2V
2
Notes
With simulated source impedance of
500nH, 5Hz to 20MHz; use a
270uF/6.3V cap with ESR=0.03 ohm
max at 100KHz
Note: All specifications are typical at 25°C unless otherwise stated.
Output Specifications
Parameter
Output Voltage Set Point
Min
Typ
Max
3.234V
2.450V
1.764V
1.470V
1.176V
0.980V
-
3.3V
2.5V
1.8V
1.5V
1.2V
1.0V
±1mV
±2mV
3.366V
2.550V
1.836V
1.530V
1.224V
1.020V
±4mV
±5mV
0A
20A
-
±10mV
±9mV
±7mV
±6mV
±5mV
±4mV
2
0.3A s
±15mV
±13mV
±12mV
±11mV
±10mV
±9mV
12A
30A
2
0.6A s
Ripple and Noise (RMS)
-
12mV
21mV
Ripple and Noise (pk-pk)
-
50mV
90mV
330uF
5mS
0%
-
10mS
3%
4800uF
-
110mV
40uS
110mV
40uS
100mV
30uS
100mV
30uS
90mV
20uS
90mV
20uS
150mV
80uS
150mV
80uS
150mV
60uS
150mV
60uS
130mV
40uS
130mV
40uS
VO=3.3V
VO=2.5V
VO=1.8V
VO=1.5V
VO=1.2V
VO=1.0V
Line Regulation
Load Regulation
Regulation Over Temperature (-40°C to +85°C)
VO=3.3V
VO=2.5V
VO=1.8V
VO=1.5V
VO=1.2V
VO=1.0V
Output Current
Current Limit Threshold
Short Circuit Surge Transient
Turn on Time
Overshoot at Turn on
Output Capacitance
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
VO=3.3V
VO=2.5V
VO=1.0V 1.8V
Notes
Test conditions:
Vin=5V, Io= 50% load
Test conditions:
0-20MHz BW; 1uF ceramic
capacitor and 330uF external
capacitor at the output.
Test conditions:
di/dt=0.5A/us, Vin=5V, with
330uF external load
capacitance.
Note: 1. All specifications are typical at 5V 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 CONVERTERS
3.0V-5.5V Input
1.0V-3.3V/12A Output
General Specifications
Parameter
Min
Typ
Max
VO=3.3V
VO=2.5V
VO=1.8V
VO=1.5V
VO=1.2V
VO=1.0V
90%
86%
84%
81%
79%
77%
93%
89%
87%
84%
82%
80%
-
VO=1.8V
VO=1.5V
VO=1.2V
VO=1.0V
85%
81%
79%
76%
88%
84%
82%
79%
-
Switching Frequency
250KHz
300KHz
350KHz
Output Trim Range
90%VO
-
110%VO
-
-
10%
Notes
Efficiency
Vin=5V, full load
Efficiency
Remote Sense Compensation
MTBF
× H)
× H)
0.78 x 0.70 x 0.32
19.81 x 17.78 x 8.128
× H)
× H)
0.70 x 0.308 x 0.65
17.78 x 7.82 x 16.51
Weight
-
SMD module
Calculated Per Bell Core TR-332 (IO
= 9.6A, Vin=5V; Ta = 25°C)
4,038,174 hours
Dimensions (surface mount)
Inches (L × W
Millimeters (L × W
Dimensions (vertical)
Inches (L × W
Millimeters (L × W
Vin=3.3V, full load
5.1g
-
Control Specifications
Parameter
Remote On/Off
Signal Low (Unit Off)
Signal High (Unit On)
Min
Typ
Max
-
-
0.9V (Vin=3.0V)
-
-
1.35V (Vin=4.5V)
-
-
1.65V (Vin=5.5V)
2.1V (Vin=3.0V)
-
-
3.15V (Vin=4.5V)
-
-
3.85V (Vin=5.5V)
-
-
Notes
Remote on/off pin open, unit on.
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
3.0V-5.5V Input
1.0V-3.3V/12A Output
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 (Vnom) 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.
RTrimDown =
Vout
A
−B
Vnom − Vadj
Rtrimdown
Module
Trim
GND
RTrimUp =
Vadj
Vout
C
−D
− Vnom
Module
Trim
Rtrimup
GND
Vnom
A
B
C
D
3.3
161.391
161.900
43.330
100.000
2.5
111.674
208.900
43.330
147.000
1.8
68.576
287.900
43.330
226.000
1.5
50.000
287.900
43.330
226.000
1.2
31.240
208.900
43.330
147.000
1.0
18.850
161.900
43.330
100.000
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
3.0V-5.5V Input
1.0V-3.3V/12A Output
Efficiency Data
95.00%
100.00%
95.00%
90.00%
90.00%
85.00%
4.5V
5.0V
85.00%
5.5V
80.00%
3.6V
4.5V
5.5V
80.00%
75.00%
75.00%
70.00%
70.00%
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
x7AH-12F330
4
5
6
7
8
9
10
11
12
x7AH-12F250
95.00%
95.00%
90.00%
90.00%
85.00%
85.00%
3V
80.00%
3.3V
5V
75.00%
5.5V
80.00%
3V
75.00%
3.3V
5V
5.5V
70.00%
70.00%
65.00%
65.00%
60.00%
60.00%
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
x7AH-12F180
4
5
6
7
8
9
10
11
12
x7AH-12F150
95.00%
95.00%
90.00%
90.00%
85.00%
85.00%
3V
3.3V
5V
80.00%
75.00%
3V
3.3V
5V
5.5V
80.00%
75.00%
5.5V
70.00%
70.00%
65.00%
65.00%
60.00%
60.00%
1
2
3
4
5
6
7
8
x7AH-12F120
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
x7AH-12F100
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
3.0V-5.5V Input
1.0V-3.3V/12A Output
Thermal Derating Curves
S7AH-12F330
S7AH-12F250
S7AH-12F180
V7AH-12F330
V7AH-12F250
V7AH-12F180
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
3.0V-5.5V Input
1.0V-3.3V/12A Output
Thermal Derating Curves (continued)
S7AH-12F150
V7AH-12F150
S7AH-12F120
V7AH-12F120
S7AH-12F100
V7AH-12F100
Test Condition: Derating curves are tested at 5V input.
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
3.0V-5.5V Input
1.0V-3.3V/12A Output
bel
Pin Connections
Pin
Function
1
Remote On/Off (option)
2
Vin
3
Ground
4
Vout
5
Trim (option)
6
Remote Sense (option)
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