MB3883 Fujitsu, MB3883 Datasheet
MB3883
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MB3883 Summary of contents
Page 1
... Zeta system with free input and output settings). The MB3883 can operate at low voltage levels, and has a wide supply voltage range from 1 The MB3883 is available in two packages, an LQFP-48P or a leadless BCC-48P formed with a contact electrode pad only ...
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... MB3883 PIN ASSIGNMENTS SWOUT 1 SWIN 2 FB6 3 IN6 4 C IN6 5 DTC5 6 FB5 7 IN5 OUT ( FB4 11 IN4 12 (CH4) 2 (TOP VIEW) Output block Control block (FPT-48P-M05) 36 DTC1 35 FB1 34 IN1 33 DTC2 32 FB2 31 IN2 30 DTC3 29 FB3 28 IN3 ...
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... SWOUT 1 SWIN 2 FB6 3 IN6 4 C IN6 5 DTC5 6 FB5 7 IN5 OUT ( FB4 11 IN4 (CH4) (TOP VIEW) Output block Control block (LCC-48P-M02) MB3883 37 OUT1-1 36 DTC1 35 FB1 34 IN1 33 DTC2 32 FB2 31 IN2 30 DTC3 29 FB3 28 IN3 ...
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... MB3883 PIN DESCRIPTION Pin No. Symbol 35 FB1 34 IN1 CH1 36 DTC1 37 OUT1-1 38 OUT1-2 32 FB2 31 IN2 CH2 33 DTC2 39 OUT2-1 40 OUT2-2 29 FB3 28 IN3 CH3 30 DTC3 41 OUT3 11 FB4 12 IN4 14 DTC4 CH4 43 OUT4 OUT ( ( FB5 8 IN5 CH5 6 DTC5 45 OUT5-1 46 OUT5-2 3 FB6 4 IN6 ...
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... CH5 OFF mode Short protection circuit capacitor connection pin. CH1to CH5 soft start circuit capacitor connection pin. Reference voltage and control circuit power supply pin. Output circuit power supply pin. O Reference voltage output pin. Ground pin. Output circuit ground pin. MB3883 5 ...
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... MB3883 BLOCK DIAGRAM FB1 DTC1 FB2 DTC2 FB3 DTC3 IN (A) 4 OUT (A) 4 FB4 IN (S) 4 DTC4 FB5 DTC5 FB6 C IN6 CTL1, 2 CTL3 CTL4 CTL5 6 PWM 42 VCC (O) CH1 Comp. 1-1 35 Drive 37 OUT1-1 Error 1-1 Amp.1 PWM IN1 34 Comp. VB1 1-2 Drive 1. SCP 1-2 Comp.1 1 PWM CH2 Comp ...
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... PWM CH2 Comp. 2-1 Drive Error 2-1 Amp.2 PWM Comp. VB1 2-2 Drive 1.25 V SCP 2-2 Comp.2 1.0 V PWM CH3 Comp.3 Drive Error 3 Amp.3 1.25 V SCP Comp.3 1.0 V CH4 INV Amp.4 PWM Comp.4 Error Drive Amp.4 4 1.25 V SCP Comp.4 1.0 V MB3883 VCC ( OUT1-1 38 OUT1-2 39 OUT2-1 OUT2 OUT3 43 OUT4 7 ...
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... MB3883 • Block diagram (Expansion 2/2) FB5 7 IN5 8 1.25 V 1.0 V DTC5 6 FB6 3 ( IN6 4 37.5 k 62 IN6 5 0.9 V CTL1 CTL3 22 CS CTL Logic CTL4 23 CTL5 CH5 PWM Comp. 5-1 Drive 5-1 Error Amp.5 PWM Comp. VB1 5-2 Drive 5-2 SCP Comp.5 CH6 ( ...
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... WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current, temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings. Condition Min. OUT pin OUT pin, Duty (LQFP-48P (BCC-48P cm). MB3883 Rating Unit Max 200 mA 860* mW 710* ...
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... MB3883 RECOMMENDED OPERATING CONDITIONS Parameter Startup power supply voltage Power supply voltage Reference voltage output current VB pin output current Input voltage Control input voltage Output current Output current setting resister Oscillator frequency Timing capacitor Timing resistor Soft-start capacitor Short detection capacitor ...
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... VCC 37, 38, 39, 40, 41, CT 100 pF 43, 45, 46 37, 38, 39, 40, 41, VCC 43, 45, 46, 47 37, 38, 39, 40, 41 43, 45, 46, 47 MB3883 ( VCC 5 V) Value Unit Min. Typ. Max. 2.46 2.49 2. ...
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... MB3883 Parameter Threshold voltage V temperature T stability Input bias current Voltage gain Frequency bandwidth Output voltage Output source current Output sink current Threshold voltage V temperature T stability Input bias current Voltage gain Frequency bandwidth Output voltage Output source current Output sink current Input offset voltage ...
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... OUT 38, 40, 41, 43, 46 Duty 5 %, OUT 38, 40, 41, 43, 46 Duty 5 %, OUT 38, 40, 41, 43, 46 OUT 38, 40, 41, 43, 46 OUT OUT 0 Duty 5 %, OUT MB3883 ( VCC 5 V) Value Unit Min. Typ. Max. 0.97 1.00 1.03 V 320 80 nA 200 50 nA 0.8 0.9 1 ...
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... MB3883 (Continued) Parameter Symbol SW input voltage Input current Output source I current Output sink current Output ON resistor CTL input voltage Input current Standby current I Power supply current *: Standard design value. 14 Pin No. Conditions V 5 SWOUT “L” level SWOUT “H” level ...
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... 100 Control current vs. control voltage 300 VCC 5 V 250 VREF 0 mA 200 150 100 (V) Control voltage V MB3883 25 C CTL1, 2 CTL3 CTL4 CTL5 ( VCC 5 V CTL CTL1, 2 CTL5 ...
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... MB3883 Triangular wave upper and lower limit voltage vs. triangular wave oscillator frequency 0.9 VCC 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0 200 400 600 Triangular wave oscillator frequency f Triangular wave oscillator frequency vs. timing capacitor 10000 1000 100 RT 100 100 Timing capacitor C Triangular wave oscillator frequency vs ...
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... 180 CS CTL Logic Power dissipation vs. ambient temperature 1000 800 710 600 400 200 100 Ambient temperature MB3883 VCC 5 V 240 OUT Error Amp.1 1.25 V VCC 5 V 240 OUT VB Error Amp.6 1.26 V (BCC-48P ...
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... MB3883 FUNCTIONS 1. DC-DC Converter Functions (1) Reference voltage block The reference voltage circuit generates a temperature-compensated reference voltage (typically : = 2.49 V) from the voltage supplied from the power supply terminal (pin 19). The voltage is used as the reference voltage for the IC’s internal circuitry. The reference voltage can supply a load current external device through the VREF terminal (pin 16) ...
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... Channel On/Off Setting Conditions Channel on/off state CTL5 Power/CH6 CH1, CH2 OFF (Standby state OFF MB3883 CH3 CH4 CH5 OFF OFF ON OFF OFF ON ON OFF OFF ON ON OFF ON ON OFF OFF ON OFF OFF ON ON ...
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... MB3883 4. Soft Start Operation 1. Description • When the CTL, CTL1,2, CTL3, CTL4, and CTL5 terminals are driven high (“H” level) at the same time The capacitor (C+IN6) connected to the C+IN6 terminal (pin 5) starts charging. When the C+IN6 terminal voltage falls below 0.9 V (Typ.), the capacitor (Cs) connected to the CS terminal (pin 15) starts charging and the error amp ...
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... CH1 to CH3 soft start interval Note : Each of the terminals CTL1,2, CTL3, CTL4, and CTL5 can be switched on or off independently. When any of these CTL terminals is switched on, a soft start operation is provided as shown in the above timing chart. 0.9 V 2.49 V 1.25 V (5) (3) (2) (4) (6)’ (7)’ MB3883 1. (6) (7) 21 ...
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... MB3883 2. Soft Start Settings • CH6 soft start time The soft start operation is determined by the capacitor (C+IN6) connected to the C+IN6 terminal (pin 5). The soft start time depends on the input voltage and load current. CH6 soft start time C (F) 37 IN6 ts (s) 100 (k ) ...
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... CH1 to CH3, CH5 V O FB1 IN1 R2 • CH4 ( OUT ( FB4 R3 12 IN4 1. ( Error Amp.1 1.25 V SCP Comp.1 1 INV IN (A) 4 OUT ( Amp OUT (A) 4 IN4 Error Amp.4 1.25 V MB3883 ...
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... MB3883 • CH6 V O FB6 R1 IN6 R2 C IN6 Error ( Amp.6 4 37.5 k 1. 1.26 V (R1 R2 ...
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... Output source current (Peak (A) 42 VCC ( Output source current 47 OUT6 Output sink current Sink current RB6 48 44 GND (O) In the output circuit diagram Output source current Output sink current (Peak) t Output current waveform MB3883 External NPN transistor ...
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... MB3883 SETTING TIME CONSTANT FOR TIMER-LATCH SHORT-CIRCUIT PROTECTION CIRCUIT The short detection comparator (SCP comparator) in each channel monitors the output voltage. While the switching regulator load conditions are stable on all channels, the LOG_SCP output remains at “H” level, transistor Q1 is turned on, and the CSCP terminal (pin 18) is held at “L” level. ...
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... OPERATING WITHOUT THE SOFT START FUNCTION To disable the CH1 to CH5 soft start function, leave the CS terminal (pin 15) open. To disable the CH6 soft start function, leave the C+IN6 terminal (pin 5) open CSCP “Open” “Open” IN6 When no soft start time is set MB3883 27 ...
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... MB3883 SETTING THE DEAD TIME When the device is set for step-up inverted output based on the step-up or step-up/down Zeta method or flyback method, the FB pin voltage may reach and exceed the rectangular wave voltage due to load fluctuation. If this is the case, the output transistor is fixed to a full-ON state (ON duty = 100 %). To prevent this, set the maximum duty of the output transistor ...
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... TREATMENT WITHOUT USING CH4 INV Amp. When not using the CH4 INV Amp., connect the -IN(A)4 terminal (pin 9) to the OUT(A)4 terminal (pin 10) with the shortest distance. 9 IN(A)4 10 OUT(A)4 Treatment without using CH4 INV Amp. MB3883 29 ...
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... MB3883 APPLICATION EXAMPLE A FB1 R12 35 C23 2.7 k 0.1 F R13 IN1 R14 15 k R15 DTC1 R16 47 k FB2 B C24 32 0.1 F R17 IN2 R18 15 k R19 DTC2 R20 FB3 R21 29 C25 15 k 0.1 F R22 R8 150 ...
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... R31 47 k VCC (O) 42 OUT1-1 37 CH1 C17 2.2 F 3300 pF OUT1-2 38 OUT2-1 39 C18 CH2 2.2 F 2700 pF OUT2-2 40 C19 2.2 F CH3 OUT3 41 CH4 C20 2.2 F OUT4 43 MB3883 Vo1 (3 (250 mA 150 C2 4 C10 4 Vo2 (2 (150 mA 300 C4 4 ...
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... MB3883 • Application example (Expansion 2/2) FB5 F R32 7 C27 15 k 0.1 F R33 R10 IN5 R34 15 k R35 DTC5 R36 FB6 3 R37 C28 15 k 0.1 F R38 R11 IN6 R39 IN6 5 C29 0.33 F CTL1 CTL3 22 CTL4 23 CTL5 ...
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... 1/16 W 2 1/16 W 150 k 1/ 1/16 W 120 1/16 W MB3883 PARTS NO. CPH3106 NDS355AN CPH3303 CPH3206 SBS004 SB05-05CP TDK SLF6028T-150M1R0 TDK SLF6028T-220MR77 33 ...
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... MB3883 REFERENCE DATA Conversion efficiency vs. load current (CH1 : Zeta method with synchronous rectification 100 150 200 250 300 350 400 450 500 Load current IL (mA) Conversion efficiency vs. load current (CH2 : Zeta method with synchronous rectification) ...
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... Vin = 4 100 150 Load current IL (mA) Iin 25 C Vin To OUT5-1 To OUT5-2 To SWOUT 200 250 300 Note : The above application uses a constant of Vin=2.5V, with settings made at maximum load. MB3883 Q10 Vo5 (5 C21 C12 C13 2.2 F 4.7 F 2.2 F Vo5 ...
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... Do not apply negative voltages. The use of negative voltages below –0.3 V may create parasitic transistors on LSI lines, which can cause abnormal operation. ORDERING INFORMATION Part number MB3883PFV MB3883PV between body and ground. Package 48-pin plastic LQFP (FPT-48P-M05) 48-pad plastic BCC ...
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... Details of "A" part 0.08(.003) 13 "A" 0.50±0.20 0.08(.003) M (.020±.008) 0.60±0.15 (.024±.006) MB3883 +0.20 1.50 –0.10 (Mounting height) +.008 .059 –.004 0.10±0.10 (.004±.004) 0°~8° (Stand off) 0.25(.010) Dimensions in mm (inches) ...
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... MB3883 (Continued) 48-pin plastic BCC (LCC-48P-M02) 7.00±0.10(.276±.004 0.05(.002) 1998 FUJITSU LIMITED C48055SC-1 6.15(.242)TYP 5.00(.197)TYP (0.80(.031)MAX) 0.50(.020) (Total height) TYP 25 25 0.085±0.040 (.003±.002) (Stand off) 7.00±0.10 6.20(.244) (.276±.004) TYP 13 13 6.20(.244)TYP Details of " ...
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... MB3883 FUJITSU LIMITED For further information please contact: Japan FUJITSU LIMITED Corporate Global Business Support Division Electronic Devices Shinjuku Dai-Ichi Seimei Bldg. 7-1, Nishishinjuku 2-chome, Shinjuku-ku, Tokyo 163-0721, Japan Tel: +81-3-5322-3347 Fax: +81-3-5322-3386 http://edevice.fujitsu.com/ North and South America FUJITSU MICROELECTRONICS, INC. ...