MB3782PF-G-BND Fujitsu Components, MB3782PF-G-BND Datasheet
MB3782PF-G-BND
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MB3782PF-G-BND Summary of contents
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FUJITSU MICROELECTRONICS DATA SHEET ASSP Power Supplies BIPOLAR Switching Regulator Controller MB3782 DESCRIPTION The FUJITSU MICROELECTRONICS MB3782 is a PWM-type switching regulator controller, designed with open- collector output for connection to external drive transistors and coils, providing a selection of ...
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MB3782 PIN ASSIGNMENT PIN DESCRIPTION Pin No. Pin Name 1 V REF +IN1 5 –IN1 6 FB1 7 1 DTC1* 2 TOP VIEW REF CTL ...
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Pin No. Pin Name 8 VOUT1 9 GND 10 OUT2 1 11 DTC2* 12 FB2 13 –IN2 14 SCP OUT3 16 DTC3 FB3 18 –IN3 19 CTL *1: DTC = Dead Time ...
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MB3782 BLOCK DIAGRAM 1.25 V Triangular wave oscillator + + IN1 4 - IN1 - 5 FB1 6 DTC1 IN2 13 + 1.25 V FB2 12 DTC2 11 - IN3 - 18 + 1.25 ...
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FUNCTIONAL DESCRIPTIONS 1. Reference Voltage Source The reference voltage source uses the voltage provided at the V compensated reference voltage (≅ 2.50 V), which is used as the operating power supply for the internal circuits of the IC. The reference ...
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MB3782 ABSOLUTE MAXIMUM RATINGS Parameter Power supply voltage Error amp input voltage Dead time control input voltage Control input voltage Collector output voltage Collector output current Allowable loss Operating ambient temperature Storage temperature *1: For operation in conditions where Ta ...
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ELECTRICAL CHARACTERISTICS Parameter Symbol Output voltage Output voltage temperature variation Input stability Load stability Short output current Threshold voltage Hysteresis width Reset voltage ( Input threshold voltage Input standby voltage Input latch voltage Input source current Comparator threshold ...
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MB3782 (Continued) Parameter Input offset voltage Input offset current Input bias current Common mode input voltage range Voltage gain Frequency bandwidth Common mode rejection ratio Maximum output voltage range Output sink current Output source current Input threshold voltage Input sink ...
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SETTING THE TIME CONSTANT FOR THE TIMER-LATCH TYPE SHORT PREVENTION CIRCUIT Figure 1 shows the configuration of the protection latch circuit. The output lines from the error amps are each connected to the inverting input lines of the short protection ...
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MB3782 SETTING OUTPUT VOLTAGE The following diagrams show the connections used to set the output voltage. Because the power supply to the error amps is provided by the same reference voltage circuit used for the other internal circuits, the common-mode ...
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V Figure 4 Error amp (channel 2, channel 3) connection The non-inverting input to the error amps on channel 2 and channel 3 is internally connected to V therefore cannot be configured for inverting output. ch.1 Step up Step ...
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MB3782 USING THE R PIN T The triangular waves, as shown in Figure 5, act to set the oscillator frequency by charging and discharging the capacitor connected to the addition, when voltage level V the external circuit ...
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TREATMENT OF UNUSED ERROR AMPS Any error amps that are not used should be handled as follows. Note that failure to apply proper treatment to error amps will cause the SCP circuit to activate and disable the switching regulator output. ...
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MB3782 TREATMENT OF UNUSED SCP PIN When the timer latch short protection circuit is not used, the SCP pin (pin 14) should be connected to the GND by the shortest possible path. 14 SCP 14 ...
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TEST CIRCUIT 330 pF 150 k TEST INPUT OUTPUT OUTPUT 4 CTL TEST 5 16 INPUT TEST 10 11 ...
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MB3782 TIMING CHART (INTERMAL WAVEFORMS) C pin wavefoms T Short protection 2.1 V comparator reference input 1.9 V Dead time,PWM input voltage 1.6 V 1.3 V Error amp output "High" PWM comparator output "Low" "High" Output transistor-collector waveforms "Low" 0.6 ...
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EXAMPLE OF APPLICATION 1 (6V) IN CTL 4 IN1 4 IN1 0.033 F 150 k 6 FB1 1 IN2 0.033 F 150 k 12 FB2 1 IN3 ...
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MB3782 TYPICAL CHARACTERISTICS CURVES Reference voltage vs. Power supply voltage 5.0 2 Power supply voltage V Reference voltage vs. Operating ambient temperature 2.51 2.50 2.49 2.48 2.47 2.46 2. ...
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Oscillator frequency vs. Timing resistance +25˚ 100 150 1500 15000 ...
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MB3782 Voltage gain and phase vs. Frequenncy 100 Frequenncy f (Hz) Voltage gain and phase vs. Frequenncy 100 1 k ...
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Allowable loss vs. Operating ambient temperature 800 740 SOP version 600 400 200 +10 +20 +30 +40 +50 +60 +70 +80 +85 Operating ambient temperature Ta (˚C) MB3782 ...
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MB3782 CONCERNING EQUIVALENT SERIES RESISTANCE AND STABILITY OF SMOOTHING CAPACITORS In DC/DC converters, the equivalent series resistance value (ESR) of smoothing capacitors has a major influence on loop phase characteristics. The ESR is a means by which phase characteristics approximate ...
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Reference data Changing the smoothing capacitor from an aluminum electrolytic capacitor (RC ≅ 1.0Ω lower-ESR semi- conductor electrolytic capacitor (OS-CON C NF – Error amp Figure 8 Measurement of DC/DC Capacitor AV and Phase (φ) ...
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... ORDERING INFORMATION Part number MB3782PF- MB3782PF- E1 RoHS Compliance Information of Lead (Pb) Free version The LSI products of Fujitsu Microelectronics with “E1” are compliant with RoHS Directive , and has observed the standard of lead, cadmium, mercury, Hexavalent chromium, polybrominated biphenyls (PBB) , and polybro- minated diphenyl ethers (PBDE) . The product that conforms to this standard is added “ ...
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LABELING SAMPLE (Lead free version) MB123456P - 789 - GE1 (3N) 1MB123456P-789-GE1 (3N)2 1561190005 107210 1,000 MB123456P - 789 - GE1 2006/03/01 MB123456P - 789 - GE1 1561190005 Lead free mark JEITA logo JEDEC logo G Pb 1000 QC PASS ...
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... MB3782 MB3782PF- E1 RECOMMENDED CONDITIONS OF MOISTURE SENSITIVITY LEVEL Item Mounting Method Mounting times Storage period Storage conditions [Temperature Profile for FJ Standard IR Reflow] (1) IR (infrared reflow) 260 C 255 C 170 C to 190 C RT (a) Temperature Increase gradient : Average 1 °C °C/s (b) Preliminary heating (c) Temperature Increase gradient : Average 1 °C °C/s (d) Actual heating (d’ ...
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PACKAGE DIMENSION 20-pin plastic SOP (FPT-20P-M01) 20-pin plastic SOP (FPT-20P-M01) +0.25 +.010 * 1 12.70 .500 –0.20 –.008 20 INDEX 1 1.27(.050) 0.47±0.08 (.019±.003) 0.10(.004) 0.10(.004) 2002 FUJITSU LIMITED F20003S-c-7-7 C Lead pitch Package width package length Lead shape Sealing ...
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FUJITSU MICROELECTRONICS LIMITED Shinjuku Dai-Ichi Seimei Bldg. 7-1, Nishishinjuku 2-chome, Shinjuku-ku, Tokyo 163-0722, Japan Tel: +81-3-5322-3347 Fax: +81-3-5322-3387 http://jp.fujitsu.com/fml/en/ For further information please contact: North and South America FUJITSU MICROELECTRONICS AMERICA, INC. 1250 E. Arques Avenue, M/S 333 Sunnyvale, CA ...