NON-ISOLATED DC/DC CONVERTERS 5.0V Input 0.9V to 3.3V/12A Output S7DB-12B1Ax • Non-Isolated • Remote On/Off • Fixed frequency (300kHz) • Input Under-voltage Lockout (UVLO) • Low profile package (8.5mm) • OCP/SCP • Remote Sense • Wide Trim Range/output Description The S7DB-12B1Ax is part of the low cost non-isolated DC/DC power converter series. The module uses a DIP package for ease of layout and space savings, with a low profile of 8.5mm. The output is widely trimmed from 0.9V to 3.3V, and the efficiency of 3.3V output module is typically 92% at full load. Features include remote sense, remote on/off, short circuit protection, over current protection and input under-voltage lockout. Part Selection Output Voltage 0.9 – 3.3V Input Voltage 5V Max. Output Current 12A Max. Output Power 39.6W Typical Efficiency 92% Model Number Active High S7DB-12B1AH Model Number Active Low S7DB-12B1A0 Note: Add “R” suffix at the end of the model number to indicate “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 -40°C -55°C Typ - Max 6V 6V 85°C 100°C Min 4.5V Typ 5.0V Max 5.5V - 70mA 10mA 11.2A 8.7A 6.6A 5.5A 4.5A 3.5A 3.2A 100mA 20mA - 140mA 280mA - 40mA 80mA - 0.1A s 4.3V 3.85V Notes Input Specifications Parameter Input Voltage Input Current (full load) Vo=3.3V Vo=2.5V Vo=1.8V Vo=1.5V Vo=1.2V Vo=1.0V Vo=0.9V Input Current (no load) Remote Off Input Current Input Reflected Ripple Current (pk-pk) Input Reflected Ripple Current (RMS) 2 I t Inrush Current Transient Turn-on Voltage Threshold Turn-off Voltage Threshold 2 2 Notes Tested with simulated source impedance of 500Hz to 20MHz & two 270uF/10V Oscon capacitors with ESR=0.018 ohm max. at 100KHz 0.2A s 4.5V 4.49V 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 5.0V Input 0.9V to 3.3V/12A Output Output Specifications Parameter Output Voltage Set Point Min Typ Max 3.234V 2.450V 1.764V 1.470V 1.176V 0.980V 0.882V - 3.3V 2.5V 1.8V 1.5V 1.2V 1.0V 0.9V 2mV 3.366V 2.550V 1.836V 1.530V 1.224V 1.020V 0.918V 5mV - 6mV 6mV 12mV 10mV 0A 15.6A 22mV 17mV 12mV 10mV 8mV 7mV 6mV - 45mV 34mV 25mV 20mV 17mV 15mV 13mV 12A 30A Ripple and Noise (RMS) - 10mV 25mV Ripple and Noise (pk-pk) - 30mV 60mV 0uF 0.25A s 2 0.3A s 2 0.35A s 2 0.4A s 2 0.4A s 2 0.45A s 2 0.45A s 12mS 0% Vo=3.3V Vo=2.5V Vo=1.8V Vo=1.5V Vo=1.2V Vo=1.0V Vo=0.9V Line Regulation Load Regulation Vo=2.5V-3.3V Vo=0.9V-1.8V 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 Vo=0.9V Output Current Current Limit Threshold Short Circuit Surge Transient Vo=3.3V Vo=2.5V Vo=1.8V Vo=1.5V Vo=1.2V Vo=1.0V Vo=0.9V Turn on Time Overshoot at Turn on Output Capacitance Transient Response 50% ~ 100% Max Load Overshoot Settling Time 2 - Notes Vin=5V, full load Test conditions: two 270uF/10V with ESR=0.018 ohm max at the input; 0-20MHz BW; 1uFceramic capacitor & 10uF aluminum capacitor at the output. 2 0.5A s 2 0.6A s 2 0.7A s 0.8A2s 2 0.8A s 2 0.9A s 2 0.9A s 20mS 3% 4800uF 115mV 150mV - 100uS 130uS - 115mV 150mV 100uS 130uS Overshoot - 120mV 150mV Settling Time - 70uS 100uS - Overshoot 100% ~ 50% Max Load Settling Time 50% ~ 100% Max Load Overshoot VO=3.3V VO=2.5V 100% ~ 50% Max Load 120mV 150mV Settling Time - 70uS 100uS 50% ~ 100% Max Load Overshoot - 120mV 150mV Settling Time - 50uS 80uS 100% ~ 50% Max Load - 120mV 150mV Settling Time - 50uS 80uS Overshoot VO=1.8V Test conditions: di/dt=0.5A/uS, Vin=5V, without external capacitance 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 5.0V Input 0.9V to 3.3V/12A Output Output Specifications (continued) Parameter Min Typ Max Notes Transient Response 50% ~ 100% Max Load Overshoot Settling Time VO=1.5V Overshoot - 115mV 150mV - 40uS 70uS - 115mV 150mV - 40uS 70uS 100% ~ 50% Max Load Settling Time 50% ~ 100% Max Load Overshoot - 110mV 140mV Settling Time - 35uS 70uS - 110mV 140mV 35uS 70uS Overshoot - 110mV 140mV Settling Time - 35uS 70uS - 110mV 140mV Settling Time - 35uS 70uS Overshoot - 100mV 130mV - 30uS 50uS - 100mV 130mV - 30uS 50uS 100% ~ 50% Max Load 50% ~ 100% Max Load 100% ~ 50% Max Load VO=1.2V Overshoot Settling Time VO=1.0V Overshoot 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load Settling Time VO=0.9V Overshoot Test conditions: di/dt=0.5A/uS, Vin=5V, without external capacitance Note: All specifications are typical at 25°C unless otherwise stated. General Specifications Parameter Min Typ Max 89% 87% 83% 81% 79% 77% 76% 92% 90% 86% 84% 82% 80% 79% - Switching Frequency 260KHz 300KHz 340KHz Output Voltage Trim Range 0.855V - 3.63V - - 10% Notes Efficiency Vo=3.3V Vo=2.5V Vo=1.8V Vo=1.5V Vo=1.2V Vo=1.0V Vo=0.9V Remote Sense Compensation 1 MTBF Vin=5V, full load Vo=0.9V when trim pin is open. Calculated Per Bell Core TR-332 (IO =9.6A, Vin=5V; Ta = 25°C) 5,782,475 hours Dimensions Inches millimeters Weight 1.22 x 0.67 x 0.345 31.0 x 17.0 x 8.75 - 10.5g - Notes: All specifications are typical at 25°C unless otherwise stated. 1. Total adjustment of trim, setpoint and remote sense combined should not exceed 3.63V. 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 5.0V Input 0.9V to 3.3V/12A Output Control Specifications Parameter Min Typ Max 0V - 1V 2.5V - 5.5V 0V - 1V 2.5V - 5.5V Notes Remote On/Off Signal Low (Unit Off) S7DB-12B1AH Signal High (Unit On) Signal Low (Unit On) S7DB-12B1A0 Signal High (Unit Off) Remote on/off pin open, unit on. Output Trim Equations Equations for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) 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 = 1330 ⋅ Vadj − 1064 90.64 − 100 ⋅ Vadj Vout Rtrimdown − 3.65 Module Trim GND Vout RTrimUp = 1064 − 3.65 100 ⋅ Vadj − 90.64 Module Trim Rtrimup GND Note: It is strongly recommended that the Trim Resistor be placed as near to the module as possible, otherwise it may cause regulation problem. Efficiency Data 98.00% 98.00% 96.00% 96.00% 94.00% 4.5V 5.0V 92.00% 94.00% 4.5V 5.0V 92.00% 5.5V 5.5V 90.00% 90.00% 88.00% 88.00% 86.00% 86.00% 1 2 3 4 5 6 7 Vo = 3.3V 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 Vo = 2.5V 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 5.0V Input 0.9V to 3.3V/12A Output Efficiency Data (continued) 96.00% 94.00% 94.00% 92.00% 92.00% 90.00% 90.00% 4.5V 88.00% 5.0V 86.00% 5.5V 4.5v 88.00% 5.0v 86.00% 84.00% 84.00% 82.00% 82.00% 80.00% 5.5v 80.00% 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 Vo = 1.8V 5 6 7 8 9 10 11 12 Vo = 1.5V 94.00% 92.00% 92.00% 90.00% 90.00% 88.00% 86.00% 88.00% 86.00% 84.00% 82.00% 4.5v 84.00% 5.0v 5.5v 82.00% 5.0v 80.00% 5.5v 80.00% 78.00% 78.00% 76.00% 76.00% 74.00% 4.5v 72.00% 74.00% 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 Vo = 1.2V 6 7 8 9 10 11 12 Vo = 1.0V 90.00% 88.00% 86.00% 84.00% 82.00% 80.00% 4.5v 5.0v 78.00% 5.5v 76.00% 74.00% 72.00% 70.00% 1 2 3 4 5 6 7 8 9 10 11 12 Vo = 0.9V 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 5.0V Input 0.9V to 3.3V/12A 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 5.0V Input 0.9V to 3.3V/12A Output Pin Connections Pin Function 1 GND 2 GND 3 GND 4 GND 5 Vin 6 Vin 7 Trim 8 Remote On/Off 9 Remote Sense(+) 10 Vo 11 Vo 12 Vo 2004 Bel Fuse Inc. Specifications subject to change without notice. 112604 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