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