View SRAH-03H120_4553868.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 32 Vdc Input 1.2 Vdc - 5.0 Vdc/3 A Output
xRAH-03Hxx0 Series
* * * * *
RoHS Compliant
* * * *
Rev.B
Non-Isolated High Efficiency High Power Density Excellent Thermal Performance UL60950-1 Recognized (UL/cUL)
Remote On/Off Input Under Voltage Lockout OCP/SCP Low Cost
Description
The Bel xRAH-03Hxx0 is part of the low cost non-isolated dc/dc power converter series. It is packaged in a compact, overmolded package rated at 3 A. Optional lead forming provides a vertical mount product for minimal footprint or a surface mount option for a very low profile. The output is closely regulated and the efficiency of 3.3 Vdc 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 5.0 V 3.3 V 2.5 V 1.8 V 1.5 V 1.2 V Input Voltage 8.0 V - 32 V 4.9 V - 32 V 4.5 V - 32 V 4.5 V - 32 V 4.5 V - 32 V 4.5 V - 32 V Max. Output Current 3A 3A 3A 3A 3A 3A Max. Output Power 15 W 10 W 7.5 W 5.4 W 4.5 W 3.6 W Typical Efficiency 92% 90% 88% 85% 83% 81% Part Number Surface Mount SRAH-03H500 SRAH-03H330 SRAH-03H250 SRAH-03H180 SRAH-03H150 SRAH-03H120 Part Number Vertical Mount VRAH-03H500 VRAH-03H330 VRAH-03H250 VRAH-03H180 VRAH-03H150 VRAH-03H120
Notes: 1. Add "0" suffix at the end of the model number to indicate "Tube Packaging", and "R" for "Reel Packaging", and "G" for "Tray Packaging". 2. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.
Absolute Maximum Ratings
Parameter Input Voltage (continuous) Output Enable Terminal Voltage Ambient Temperature Storage Temperature Min -0.3 V -0.3 V -40 C -40 C Typ Max 34 V 12 V 85 C 125 C Notes
Input Specifications
Parameter Input Voltage Input Current (no load) Input Current (full 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 2 Turn off Voltage Threshold
1
Min 4.5 V -
Typ 30 mA 4 mA 200 mA 100 mA 0.02 A s 4.1 V 3.3 V
2
Max 32 V 3A 400 mA 150 mA 0.1 A s 4.5 V 4.0 V
2
Notes See "Part Selection" for more details.
Tested with simulated source impedance of 500 nH, 5 Hz to 20 MHz and two 100 uF/50 V electrolytic capacitors and a 3.3 uF/50 V ceramic capacitor at the input.
Notes: 1. The max Turn on Voltage threshold of the 3.3 V & 5.0 V output module will be relaxed to 4.9 V & 8.0 V
respectively. 2. The max Turn off Voltage threshold of the 3.3 V output module will be relaxed to 4.5 V. The 5.0 V output module does not have such function.
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
4.5 Vdc - 32 Vdc Input 1.2 Vdc - 5.0 Vdc/3 A Output
Output Specifications
Parameter Output Voltage Set Point VO=5.0 V VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V Vo=1.2 V Line Regulation VO=5.0 V VO=1.2 V-3.3 V Load Regulation VO=5.0 V VO=1.2 V-3.3 V Regulation Over Temperature (-40 C to +85 C) Output Current Current Limit Threshold Short Circuit Surge Transient VO=1.2 V-5.0 V Ripple and Noise (rms) VO=1.2 V-5.0 V Ripple and Noise (pk-pk) VO=1.2 V-5.0 V Turn on Time Overshoot at Turn on Output Capacitance 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=1.2 V -1.5 V VO=1.8 V - 2.5 V VO=3.3 V VO=5.0 V 150 mV 100 uS 150 mV 100 uS 130 mV 100 uS 130 mV 100 uS 100 mV 50 uS 100 mV 50 uS 90 mV 40 uS 90 mV 40 uS 200 mV 150 uS 200 mV 150 uS 180 mV 150 uS 180 mV 150 uS 150 mV 100 uS 150 mV 100 uS 140 mV 80 uS 140 mV 80 uS Test conditions: di/dt = 0.5 A/uS; Vin = 12 V; with a 220 uF Tantalum capacitor at the output. 220 uF 60 mV 15 mS 2% 100 mV 50 mS 5% 1200uF 25 mV 50 mV 0A 3.3 A Min 4.900 V 3.234 V 2.450 V 1.764 V 1.470 V 1.176 V Typ 5.0 V 3.3 V 2.5 V 1.8 V 1.5 V 1.2 V 10 mV 5 mV 10 mV 5 mV 30 mV 0.02 A s
2
Max 5.100 V 3.366 V 2.550 V 1.836 V 1.530 V 1.224 V 15 mV 10 mV 15 mV 10 mV 50 mV 3A 9A 0.1 A s
2
Notes Test conditions: Vin=12 V, Io=50% full load
Tested with 0-20 MHz BW, with a 220 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
4.5 Vdc - 32 Vdc Input 1.2 Vdc - 5.0 Vdc/3 A Output
General Specifications
Parameter Efficiency VO=5.0 V VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V Vo=1.2 V Switching Frequency Output Trim Range (narrow trim) MTBF Dimensions (surface mount) Inches (L x W x H) Millimeters (L x W x H) Dimensions (vertical) Inches (L x W x H) Millimeters (L x W x H) Weight 89% 87% 85% 82% 80% 78% 200 kHz 90%Vo 92% 90% 88% 85% 83% 81% 300 kHz 400 kHz 110%Vo Calculated Per Bell Core SR-332 (IO = Nominal; Ta = 25 C) Measured at Vin=12 V, full load and Ta=25 C Min Typ Max Notes
8,120,000 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 5.1 g
-
-
Control Specifications
Parameter Remote On/Off Signal Low (Unit On) Signal High (Unit Off) Min -0.3 V 2.8 V Typ Max 1V 12 V 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 (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.
Vout
Rtrimdown
A = -B Vnom - Vadj
Rtrim-down Module Trim
GND
Rtrimup =
Vadj
C -D - Vnom
A 61.850 53.840 9.556 3.849 3.102 1.794 B 29.400 61.700 15.620 13.830 14.420 10.910
Vout Module Trim Rtrim-up GND
Vnom 5.0 3.3 2.5 1.8 1.5 1.2
C 11.760 17.200 4.496 3.064 3.536 3.536
D 14.700 40.200 10.000 10.000 10.000 6.490
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
4.5 Vdc - 32 Vdc Input 1.2 Vdc - 5.0 Vdc/3 A Output
Efficiency Data
Efficiency Curve 100.0% 90.0%
Efficiency Curve 100.0% 90.0%
8V 12 V 24 V 32 V
Efficiency
Efficiency
80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 0.3 0.8 1.5 2.3 3.0 Output Current (A)
80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 0.3 0.8 1.5 2.3 3.0 Output Current (A)
4.9 V 12 V 24 V 32 V
Vo=5.0 V
Efficiency Curve 100.0% 90.0% Efficiency 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 0.3 0.8 1.5 2.3 3.0 Output Current (A) 4.5 V 12 V 24 V 32 V Efficiency 100.0% 90.0% 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 0.3 0.8
Vo=3.3 V
Efficiency Curve
4.5 V 12 V 24 V 32 V
1.5
2.3
3.0
Output Current (A)
Vo=2.5 V
Efficiency Curve 100.0% 90.0% Efficiency 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 0.3 0.8 1.5 2.3 3.0 Output Current (A) 4.5 V 12 V 24 V 32 V
Efficiency 100.0% 90.0% 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 0.3 0.8
Vo=1.8 V
Efficiency Curve
4.5 V 12 V 24 V 32 V
1.5
2.3
3.0
Output Current (A)
Vo=1.5 V
Vo=1.2 V
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
4.5 Vdc - 32 Vdc Input 1.2 Vdc - 5.0 Vdc/3 A Output
Thermal Derating Curve
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
4.5 Vdc - 32 Vdc Input 1.2 Vdc - 5.0 Vdc/3 A Output
Ripple and Noise Waveforms
Ripple and noise at max load 5.0 Vdc output
Ripple and noise at max load 3.3 Vdc output
Ripple and noise at max load 2.5 Vdc output
Ripple and noise at max load 1.8 Vdc output
Ripple and noise at max load 1.5 Vdc output
Ripple and noise at max load 1.2 Vdc output
Note: Ripple and Noise at 12 Vdc input, 0-20 MHz BW, with a 220 uF tantalum cap at the output, Ta=25 deg C.
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
4.5 Vdc - 32 Vdc Input 1.2 Vdc - 5.0 Vdc/3 A Output
Transient Response Waveforms
Transients 50% to 100% load 5 Vdc output
Transients 100% to 50% load 5 Vdc output
Transients 50% to 100% load 3.3 Vdc output
Transients 100% to 50% load 3.3 Vdc output
Transients 50% to 100% load 2.5 Vdc output
Transients 100% to 50% load 2.5 Vdc output
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
4.5 Vdc - 32 Vdc Input 1.2 Vdc - 5.0 Vdc/3 A Output
Transient Response Waveforms (continued)
Transients 50% to 100% load 1.8 Vdc output
Transients 100% to 50% load 1.8 Vdc output
Transients 50% to 100% load 1.5 Vdc output
Transients 100% to 50% load 1.5 Vdc output
Transients 50% to 100% load 1.2 Vdc output
Transients 100% to 50% load 1.2 Vdc output
Note: Transient Response at 12 V input, di/dt=0.5 A/uS, with 220 uF tantalum cap at the output, Ta=25 deg C.
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
4.5 Vdc - 32 Vdc Input 1.2 Vdc - 5.0 Vdc/3 A Output
Mechanical Outline
SRAH-03Hxx0
Pin Connections
bel
Pin 1 2 3 4 5 6 7
Function Remote On/Off (option) Vin Ground Vout Trim (option) N/A N/A
VRAH-03Hxx0
Pin Connections
bel
Pin 1 2 3 4 5
Function Remote On/Off (option) Vin Ground Vout Trim (option)
bel
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products. These parts are not however compatible with the higher temperatures associated with lead free solder processes and must be soldered using a reflow profile with a peak temperature of no more than 240 C.
(c)2008 Bel Fuse Inc. Specifications subject to change without notice. 010308
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

▲Up To Search▲

Price & Availability of SRAH-03H120

	To Download SRAH-03H120 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .