MB3800PNF-G-BND-JNE1 Fujitsu Semiconductor America Inc, MB3800PNF-G-BND-JNE1 Datasheet
MB3800PNF-G-BND-JNE1
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MB3800PNF-G-BND-JNE1 Summary of contents
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FUJITSU SEMICONDUCTOR DATA SHEET ASSP For Power Supply Applications BIPOLAR Switching Regulator Controller (Low Voltage) MB3800 DESCRIPTION The MB3800 is a single-channel switching regulator control IC for low voltage applications incorporating a soft start function and short circuit detection function. ...
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MB3800 PIN ASSIGNMENT –IN SCP V CC BR/CTL PIN DESCRIPTION Pin No. Symbol I/O 1 –IN 2 SCP — — BR/CTL 5 OUT 6 GND — 7 OSC — (TOP VIEW ...
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BLOCK DIAGRAM Reference 0.6 V– voltage supply 0.1 V– 1.25 V –IN – Error Amp. 0.5 V 500 FB 8 Soft start SCP 6 GND OSC 7 Sawtooth wave oscillator 0.1 V PWM ...
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MB3800 ABSOLUTE MAXIMUM RATINGS Parameter Symbol Power supply voltage V Output source current I Output sink current I Allowable dissipation P Operating temperature T Storage temperature T *: When mounted square double-sided epoxy board. WARNING: Semiconductor ...
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ELECTRICAL CHARACTERISTICS Parameter Circuit to prevent Reset voltage malfunction at low input voltage Threshold voltage (U.V.L.O.) Charging current Soft start Voltage at soft start completion Charging current Short circuit detection (S.C.P .) Threshold voltage Oscillation frequency Frequency input Sawtooth wave ...
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MB3800 (Continued) Parameter Output voltage Output section Output source current Output sink current Pull down resistance Pin voltage Output current Input off condition setting section/ Input on condition Control section Pin current range Stand-by current Entire device Average supply current ...
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HOW TO SET THE TIME CONSTANT FOR SOFT START AND SHORT CIRCUIT DETECTION 1. Soft Start At power on, the capacitor C connected to the SCP pin starts charging. The PWM comparator compares the soft PE start setting voltage as ...
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MB3800 TYPICAL CHARACTERISTICS Supply voltage vs. Supply current Supply voltage V Supply voltage vs. Input threshold voltage 1.0 0.8 0.6 0.4 0 1.0 2.0 3.0 Supply voltage V ...
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BR/CTL pin current vs. Output source current –50 –40 –30 –20 – –0.4 –0.8 –1.2 BR/CTL pin current I BR BR/CTL pin current vs. Supply current 5 4.0 3.0 2.0 1 –20 –40 ...
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MB3800 (Continued) 100 (V) V OUT (mA OUT –50 10 Oscillation frequency vs. Maximum duty cycle 270 + ...
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FUNCTIONAL DESCRIPTION 1. Switching Regulator Function (1) Reference voltage circuit The reference voltage circuit generates a temperature-compensated reference voltage ( 1.25V) from voltage supplied from the power supply pin (pin 3). In addition to providing the reference voltage for the ...
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MB3800 3. Other Functions (1) Soft start and short circuit detection Soft start operation is set by connecting capacitor C start-up. On completion of soft start operation, the SCP pin (pin 2) stays low and enters the short circuit detection ...
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... The worker must put on a grounding device containing 250 k • Do not apply a negative voltage - Applying a negative voltage of 0 less to an LSI may generate a parasitic transistor, resulting in malfunction. ORDERING INFORMATION Part number MB3800PF MB3800PNF MB3800PFV resistors in series. Package 8-pin Plastic SOP (FPT-8P-M01) 8-pin Plastic SOP ...
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MB3800 PACKAGE DIMENSIONS 8-pin Plastic SOP (FPT-8P-M01) +0. 6.35 .250 –0.20 8 INDEX 1 1.27(.050) 2002 FUJITSU LIMITED F08002S-c-6 Note These dimensions include resin protrusion. Note These dimensions do not ...
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Plastic SOP (FPT-8P-M02) +0.25 +.010 1 * 5.05 .199 –0.20 –.008 3.90±0.30 * (.154±.012) (.236±.016 1.27(.050) 0.44±0.08 (.017±.003) 0.10(.004) 0.10(.004) 2002 FUJITSU LIMITED F08004S-c-4-7 C Note These dimensions include resin protrusion. ...
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MB3800 (Continued) 8-pin Plastic SSOP (FPT-8P-M03 3.50±0.10(.138±.004) 8 INDEX 1 0.80(.031) 0.10(.004) 0.10(.004) 2002 FUJITSU LIMITED F08005S-c-3 Note Resin protrusion. (Each side : 0.15 (.006) Max) . Note These dimensions ...
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MB3800 FUJITSU LIMITED All Rights Reserved. The contents of this document are subject to change without notice. Customers are advised to consult with FUJITSU sales representatives before ordering. The information, such as descriptions of function and application circuit examples, in ...