Features Power Module 1W buck/boost converter with up to 4A output Input voltage can be higher, lower or same as output voltage >9% efficiency from 1mA 3mA load 7µA standby power consumption Low profile, thermally enhanced 25pad LGA package DC/DC Converter Description The series is a 4A non-isolated buck/boost regulator power module where the input voltage can be higher, lower or same as output voltage. Transition from buck to boost mode is smooth without any interruption to the output. The compact DOSA-compatible footprint module has a low profile of only 3.9mm, but with an efficiency of up to 95%, the can operate at full load in ambient temperatures as high as 85 C without forced air cooling. The package has 6-sided shielding for optimal EMC performance and excellent thermal management. Typical applications include USB voltage regenerators, 3.3V<->5V converters and supercapacitor or Li-Ion battery regulators. 2 Amp Single Output Selection Guide Part Input Voltage Nom. Output Output Efficiency Max. Capacitive Number Range Voltage Current max. typ. Load (1) [VDC] [VDC] [A] [%] [µf] 2.3-5.5 5 2-4 96 42 (1. - 5.5) Note1: Max. Cap Load is tested at nominal input and full resisitive load Model Numbering nom. Output Current EN5532 compliant BASIC CHARACTERISTICS Parameter Condition Min. Typ. Max. Internal Input Filter capacitor Input Voltage Range (2) Vin = 5VDC 2.3VDC 5VDC 5.5VDC Absolute Maximum Input Voltage 7VDC Undervoltage Lockout Threshold 1.6VDC 1.75VDC 2.VDC Undervoltage Lockout Hysteresis Input Current 65mV 2.3A 3.4A Quiescent Current 4µA 9µA Internal Power Dissipation Output Current Range refer to safe operating area A 2A 4A.9W 1.8W Output Voltage ming (3) see table or calculation 1.VDC 5.VDC 5.5VDC Minimum Load % Start-up time power up 2A BUCK BOOST 1.4ms 1.8ms 7µs 45µs continued on next page www.recom-power.com REV.: /218 RBB-1
Parameter Condition Min. Typ. Max. Rise Time 4µs ON/OFF CTRL nom. DC-DC ON DC-DC OFF Input Current of CTRL Pad nom. CTRL voltage = V 5µA Open or 1.2V<V CTRL <Vin Short or -.3V<V CTRL <.4VDC Standby Current nom. CTRL voltage = V 5.1µA 7µA Internal Operating Frequency 2.55MHz Output Ripple and Noise (4) 2MHz BW - 98W @ 1MHz + 22µF 15mVp-p Absolute Maximum Capacitive Load <1 second start up C ss = 37nF 42µF <1 second start up no C ss 8µF Note2: For detail information please refer to Safe Operating Area graph below Note3: For detail information please refer to trim table or calculation on page RBB-3 Note4: Measurements are made with a 22µF MLCC across output (low ESR) Efficiency vs. Load 5Vout 3.3Vout Efficiency [%] 1 9 8 7 6 5 4 3 2 1.5 1. 1.5 2. 2.5 3. 3.5 4. 2.5Vin 3.6Vin 5.Vin 5.5Vin Efficiency [%] 1 9 8 7 6 5 4 3 2 1.5 1. 1.5 2. 2.5 3. 3.5 4. 2.5Vin 3.6Vin 5.Vin 5.5Vin Safe Operating Area 4.5 4. 3.5 3. 2.5 2. 1.5 1..5 5.5Vout 5.Vout 3.3Vout 1.Vout 2.3 2.7 3.1 3.5 3.3 3.6 3.9 4.3 4.7 5.1 5. 5.5 Input Voltage [VDC] www.recom-power.com REV.: /218 RBB-2
OUTPUT VOLTAGE TRIMMING The series offers the feature of trimming the output voltage over a range between 1.V and 5.5V by using external trim resistors. The values for trim resistors shown in trim tables below are according to standard E96 values; therefore, the specified voltage may slightly vary. up down +Vout Vout nom = nominal output voltage [VDC] Vout set = trimmed output voltage [VDC] V ref = reference voltage [VDC] = trim up resistor [W] = trim down resistor [W] R 1, R 2, R 3 = internal resistors [W] Vout nom R 1 R 2 R 3 V ref 5VDC 629kW 1kW 788kW.85 Calculation: = R 1 - R 2 Vout set - V nom = (Vout set - V ref ) x R 3 Vout nom - Vout set Practical Example : = 629k 5.5-5. - 1k = 1M26W = (4. -.85) x 788k = 2M52W 5. - 4. according to E96 1M27W according to E96 2M55W up Vout set = 5.1 5.2 5.3 5.4 5.5 [VDC] (E96) 6M34 3M16 2M1 1M58 1M27 [W] down Vout set = 4.5 4. 3.5 3.3 3. 2.5 2. 1.8 1.5 1. [VDC] (E96) 5M9 2M55 1M43 1M15 866k 536k 316k 243k 158k 38k3 [W] REMOTE SENSE +V in +V in +V out +Sense RW 1 +V out The output voltage can be adjusted via the trim and sense functions. The maximum output voltage from and Sense function combined is 5.5VDC. Derating may be required when using and/or sense functions. RW 1... wire losses +... trim up resistor... trim down resistor www.recom-power.com REV.: /218 RBB-3
REGULATIONS Parameter Condition Value Output Accuracy ±3.% max. Line Regulation low line to high line, full load 1.% typ. / ±3.% max. Load Regulation % to 1% load PWM mode selected (5).5% max. Transient Response Note5: The RBB1 has the possibility to work in two regulation modes: 1% - % load step recovery time 2mV max. 5µs typ. Powersave Mode (standard): This mode is the best for use at low loads to reduce power consumption and extend battery life. In this mode the internal power consumption is reduced by using burst mode for loads under 35mA and PWM for loads above 35mA. The drawback is a 1-3 % higher output voltage at low load than full load. Fixed PWM mode: In PWM mode the device accurately regulates the output voltage independently of the load current. The drawback is a higher internal power consumption and shorter battery life at lower loads. Pull down the Mode pad to to enter this mode. PROTECTIONS Parameter Condition Value Short Circuit Protection (SCP) 5mW constant current limit Short Circuit Input Current nom. Vin= 2.3VDC 7mA typ. Over Current Protection (OCP) refer to safe operating area 22% - 24%, constant current mode Over Temperature Protection (OTP) case temperature (measured on tc point) DC-DC OFF DC-DC ON 11 C, auto restart after cool down 1 C typ. ENVIRONMENTAL Parameter Condition Value Operating Temperature Range (6) Maximum Case Temperature @ natural convection.1m/s (refer to derating graph) up to 4A load up to 2A load -4 C to +85 C -4 C to +1 C +11 C Temperature Coefficient @ +65 C Tamb.2%/K Thermal Impedance.1m/s, horizontal (Tcase to Tamb) 8K/W Operating Altitude with derating @ natural convection.1m/s (refer to altitude vs. load graph) 5m Operating Humidity non-condensing 5% - 95% RH max. Shock MIL-STD-81G, Method 516.6, Procedure I MIL-STD-81G, Method 516.6, Procedure IV 4g, 11ms, saw-tooth, 3 shocks ± per axis 3 axis; unit is operating drop on 5mm plywood on concrete 26 times from 1 meter Temperature Cycling MIL-STD-883F, Method 11, Condition A powered -5 C to +85 C, 3 cycles Random Vibration MIL-STD-81G, Method 514.6, Procedure I, Category 24 MTBF according to MIL-HDBK-217F, G.B. continued on next page +25 C +85 C Note6: tested with a eurocard 16x1mm 7µm copper, 4 layer Category 24 - Figure 514.6E-1 - power spectral density =.4g 2 /Hz at 2Hz 1Hz, -6dB/Octave at 1Hz 2Hz, 6 minutes x 3 axis; unit is operating during tests 22 x 1 3 hours 4 x 1 3 hours www.recom-power.com REV.: /218 RBB-4
Derating Graph (6) (@ chamber and natural convection.1m/s) 4. 3.5 3. Operating Altitude vs Load (@ chamber and natural convection.1m/s) 4. 3.5 3.4 3. 2.5 2. 1.5 1. 5.5Vin 5.Vin.5 3.6Vin 2.5Vin -4-3 -2-1 1 2 3 4 5 6 7 8 9 1 11 2.5 2. 1.5 1..5 +85 C -4 C to +7 C 1 2 3 4 5 6 Ambient Temperature [ C] Operating Altitude [m] SAFETY AND CERTIFICATIONS Certificate Type (Safety) Report / File Number Standard RoHS 2 RoHS 211/65/EU EMC Compliance Condition Standard / Criterion Electromagnetic compatibility of multimedia equipment - Emission requirements with external components EN5532, Class B Information technology equipment - Immunity characteristics - Limits and methods of measurement EN5524:21+A1:215 EMC Filtering Suggestions according to EN5532 V in FB1 FB2 V out C1 C2 V in V out Sense C3 CTRL PG Mode 1 3 2 NC Component List Class B C1 C2 FB1 FB2 C3 WE ref.: WE ref.: 1µF 25V X7R 1µF 25V X7R 22μF 1V 7XR 74279251 7427932 www.recom-power.com REV.: /218 RBB-5
DIMENSION AND PHYSICAL CHARACTERISTICS Parameter Type Value Material Dimension (LxWxH) Weight Dimension Drawing (mm) case PCB solder pads metal FR4, (UL94 V-) copper with electrolytic nickel-gold 12.19 x 12.19 x 3.75mm 1.1g typ. 3.75 1.52 2.29 1.52 R.3 tc 12.19 ±.5 11.7 11.7 Bottom View 12.19 ±.2 25 x 1. E D C B A 1 2 3 4 5 Recommended Footprint Details Top View 1.6 A B C D E 1 2 3 4 5 1.6 Pinning information Pad # Function Description A1, A2 Vin C1 CTRL A5, B5 Vout C5 Sense Positive input voltage with respect to. Connect to a Vin plane for enhanced thermal performance High active: pull to to disable the device. Pull high or leave open to enable the device Positive output voltage. Connect to a Vout plane for enhanced thermal performance Connect this pad to the load or directly to Vout. This pad must not be left floating E5 Used to set the output voltage between.9v and 6V E1 NC Not connected E2 Mode Refer to note 5 on page RBB-4 D1 A3, A4, B1, B2, B3, B4, C2, C3, C4, D2, D3, D4, D5, E3, E4 PGood tc = case temperature measuring point Tolerance: xx.xx=.25mm Output power good. High = Vout at set level, low = Vout outside of specification. Maximum sink current is 2mA. Negative input voltage. Connect to plane(s) for enhanced thermal performance PACKAGING INFORMATION Parameter Type Value Packaging Dimension (LxWxH) tape and reel tape and reel (carton) 33.2 x 33.2 x 3.4mm 355. x 35. x 5.mm Packaging Quantity tape and reel 5pcs Tape Width Storage Temperature Range 24mm -55 C to +125 C Storage Humidity non-condensing 95% RH max. The product information and specifications may be subject to changes even without prior written notice.the product has been designed for various applications; its suitability lies in the responsibility of each customer. The products are not authorized for use in safety-critical applications without RECOM s explicit written consent. A safety-critical application is an application where a failure may reasonably be expected to endanger or cause loss of life, inflict bodily harm or damage property. The applicant shall indemnify and hold harmless RECOM, its affiliated companies and its representatives against any damage claims in connection with the unauthorized use of RECOM products in such safety-critical applications. www.recom-power.com REV.: /218 RBB-6