BEL X7AH

NON-ISOLATED DC/DC CONVERTERS
3.0 V-5.5 V Input
12 V/0.8 A & 15 V/0.6 A Output
x7AH-01Fxx0 Series
•
Non-Isolated
•
Trim Function (option)
•
Fixed Frequency (550 kHz)
•
•
High Efficiency
Allows Burst Mode Operation
at Low Load Currents
•
Low Profile Package
Description
The Bel x7AH-01Fxx0 is part of the low cost non-isolated dc/dc converter series. The modules use a surface
mount package or vertical package for ease of layout and space savings. The output is closely regulated and
the efficiency of 12 V output module is typically 88% at full load. Typical features include burst mode operation
at light load and trim function (option).
Part Selection
Output
Voltage
Input
Voltage
Max. Output
Current
Max. Output
Power
Typical
Efficiency
Part Number
Surface Mount
Part Number
Vertical Mount
12 V
3.0 V – 5.5 V
0.8 A
9.6 W
88%
S7AH-01FX20
V7AH-01FX20
15 V
3.0 V – 5.5 V
0.6 A
9.0 W
88%
S7AH-01FX50
V7AH-01FX50
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
Input Voltage (continuous)
2.8 V
-
6V
Ambient Temperature
-40 °C
-
85 °C
Storage Temperature
-40 °C
-
125 °C
Notes
Input Specifications
Parameter
Min
Typ
Max
3V
-
5.5 V
-
-
4.3 A
4.0 A
Input Reflected Ripple Current (pk-pk)
-
100 mA
150 mA
Input Reflected Ripple Current (rms)
-
30 mA
60 mA
I t Inrush Current Transient
-
0.02 A s
0.05 A s
Turn-on Voltage Threshold
-
2.8 V
2.9 V
Input Voltage
Notes
Input Current (full load)
VO=12V
VO=15V
2
2
With simulated source impedance
of 500 nH, 5 Hz to 20 MHz; Use
270 uF/16 V Oscon capacitor with
ESR = 0.018 ohm max. at 100 kHz
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 CONVERTERS
3.0 V-5.5 V Input
12 V/0.8 A & 15 V/0.6 A Output
Output Specifications
Parameter
Min
Typ
Max
VO=12 V
VO=15 V
11.580 V
14.475 V
12 V
15 V
12.420 V
15.525 V
VO=12 V
VO=15 V
-
20 mV
20 mV
40 mV
40 mV
VO=12 V
VO=15 V
-
60 mV
75 mV
120 mV
150 mV
VO=12 V
VO=15 V
-
45 mV
60 mV
80 mV
100 mV
VO=12 V
VO=15 V
0A
0A
-
0.8 A
0.6 A
VO=12 V; IO=0 A
VO=15 V; IO=0 A
VO=12 V; IO=0.8 A
VO=15 V; IO=0.6 A
-
5 mV
5 mV
20 mV
30 mV
10 mV
10 mV
40 mV
50 mV
VO=12 V; IO=0 A
VO=15 V; IO=0 A
VO=12 V; IO=0.8 A
VO=15 V; IO=0.6 A
-
20 mV
20 mV
60 mV
80 mV
40 mV
40 mV
100 mV
120 mV
Rise Time
-
5 mS
-
Overshoot at Turn on
-
0%
5%
Output Voltage Set Point
Notes
Test condition:
Vin=5 V, lout=full load
Line Regulation
Load Regulation
Regulation Over Temperature
(-40 °C to +85 °C)
Output Current
Ripple and Noise (rms)
Ripple and Noise (pk-pk)
Output Capacitance
33 uF
-
330 uF
-
130 mV
200 mV
-
100 uS
200 uS
-
130 mV
200 mV
-
100 uS
200 uS
Test conditions:
BW = 0-20 MHz; 1uF
ceramic cap and 33 uF
Tantalum capacitor at the
output.
The min output
capacitance is 33 uF
Tantalum capacitor at the
output
Transient Response
50% ~ 100%
Max Load
100% ~ 50%
Max Load
Overshoot
Settling Time
Overshoot
Settling Time
All
Outputs
di/dt = 0.1 A/uS; Vin = 5 V;
and with 33 uF Tantalum
capacitor at the output.
Note: All specifications are typical at nominal 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
3.0 V-5.5 V Input
12 V/0.8 A & 15 V/0.6 A Output
General Specifications
Parameter
Min
Typ
Max
84%
84%
88%
88%
-
Switching Frequency
500 kHz
550 kHz
650 kHz
Output Trim Range
90% VO
-
110% VO
Notes
Efficiency
VO=12 V
VO=15 V
MTBF
Measured at Vin=5 V, full load
Calculated Per Bell Core TR-332 (Vin=
5 V; Vo=12 V; IO = 0.64 A; Ta = 25 °C)
7,300,000 hours
Dimensions (surface mount)
Inches (L × W × H)
Millimeters (L × W × H)
Dimensions (vertical)
Inches (L × W × H)
Millimeters (L × W × H)
Weight
0.78 x 0.7 x 0.32
19.81 x 17.78 x 8.13
0.7 x 0.308 x 0.65
17.78 x 7.82 x 16.51
-
5.2 g
-
Note: All specifications are typical at 25 °C unless otherwise stated.
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.
Rtrim− down =
A
−B
Vnom − Vadj
Vout
Rtrim-down
Module
Trim
GND
Rtrim− up =
Vadj
Vout
C
−D
− Vnom
Module
Trim
Rtrim-up
GND
Vnom
A
B
C
D
12
164.640
21.850
11.760
7.150
15.055
209.542
20.600
11.760
5.900
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
3.0 V-5.5 V Input
12 V/0.8 A & 15 V/0.6 A Output
Efficiency Data
95.0%
92.0%
90.0%
88.0%
3.0V
5.0V
5.5V
86.0%
84.0%
Efficiency
Efficiency
90.0%
3.0V
5.0V
5.5V
85.0%
80.0%
82.0%
75.0%
80.0%
78.0%
0.08
70.0%
0.20
0.40
0.60
Output current (A)
x7AH-01FX20
0.80
0.06
0.15
0.30
0.45
0.60
Output current (A)
x7AH-01FX50
Thermal Derating Curves
x7AH-01FX20
x7AH-01FX50
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
3.0 V-5.5 V Input
12 V/0.8 A & 15 V/0.6 A Output
S7AH-01F
bel
Pin Connections
Pin
Function
1
N/A
2
Vin
3
Ground
4
Vout
5
Trim
6
N/A
7
N/A
V7AH-01F
bel
bel
Pin Connections
Pin
Function
1
N/A
2
Vin
3
Ground
4
Vout
5
Trim
2005 Bel Fuse Inc. Specifications subject to change without notice. 040805
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