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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 -40C -40C Typ Max 34V 12V 85C 125C Notes
Input Specifications
Parameter Input Voltage VO=5.0V VO=1.2V-3.3V Input Current (no load) Input Current (full load) VO=5.0V VO=3.3V VO=2.5V VO=1.8V VO=1.5V VO=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 VO=5.0V VO=1.2V-3.3V Turn off Voltage Threshold VO=5.0V VO=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 25C unless otherwise stated.
Output Specifications
Parameter Output Voltage Set Point VO=5.0V VO=3.3V VO=2.5V VO=1.8V VO=1.5V VO=1.2V Line Regulation VO=5.0V VO=3.3V VO=2.5V VO=1.8V VO=1.5V VO=1.2V Load Regulation VO=5.0V VO=3.3V VO=2.5V VO=1.8V VO=1.5V VO=1.2V Regulation Over Temperature (-40C to +85C) 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 VO=1.2V 1.8V VO=2.5V VO=3.3V VO=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 25C unless otherwise stated.
General Specifications
Parameter Efficiency VO=5.0V VO=3.3V VO=2.5V VO=1.8V VO=1.5V VO=1.2V Switching Frequency VO=5.0V VO=3.3V VO=2.5V VO=1.8V VO=1.5V VO=1.2V Output Trim Range MTBF Dimensions (surface mount) Inches (L x W Millimeters (L x W Dimensions (vertical) Inches (L x W Millimeters (L x W Weight x H) x H) x H) x 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 (IO = 0.8A, Vin=20V; Ta = 25C) 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 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.
Vout
RTrimDown
A = -B Vo - Vadj
Rtrimdown Module Trim GND
RTrimUp
C = -D Vadj - Vo
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
NON-ISOLATED DC/DC CONVERTERS
4.5V-32V Input 1.2V-5.0V/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 CONVERTERS
4.5V-32V Input 1.2V-5.0V/1A Output
bel
Pin Connections
Pin 1 2 3 4 5 6 7 Function Remote On/Off (option) Vin Ground Vout Trim (option) N/A N/A
bel
Pin Connections
Pin Function Remote On/Off (option) Vin Ground Vout Trim (option)
bel
1 2 3 4 5
2004 Bel Fuse Inc. Specifications subject to change without notice. 112504
CORPORATE Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
FAR EAST 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
EUROPE 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

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