BD9001F-E2 Rohm Semiconductor, BD9001F-E2 Datasheet
BD9001F-E2
Specifications of BD9001F-E2
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BD9001F-E2 Summary of contents
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... Furthermore, an external synchronization input pin (BD9781HFP) enables synchronous operation with external clock. Features 1) Minimal external components 2) Wide input voltage range (BD9778F/HFP and BD9781HFP (BD9001F) 3) Built-in P-ch POWER MOS FET 4) Output voltage setting enabled with external resistor Reference voltage accuracy: ±2% 6) Wide operating temperature range: -40˚ ...
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... Absolute Maximum Ratings(Ta = 25˚C) Parameter Power supply BD9778F/HFP,BD9781HFP voltage BD9001F Output switch pin voltage BD9778F/HFP, BD9001F Output switch current BD9781HFP EN/SYNC, EN pin voltage RT, FB, INV pin voltage HRP7 Power dissipation SOP8 Operating temperature BD9778F/HFP,BD9781HFP range BD9001F Storage temperature range Maximum junction temperature *1 Should not exceed Pd-value. *2 Reduce by 44mW/∞ ...
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... BD9001F (Unless otherwise specified, Ta=-40˚C ~ +95˚C,V Parameter Standby circuit current Circuit current [SW block] POWER MOS FET ON resistance Operating output current of overcurrent protection [Error Amp block] Reference voltage 1 Reference voltage 2 Reference voltage input regulation Input bias current Maximum FB voltage Minimum FB voltage ...
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... IN Fig.5 Standby current (BD9001F From the top, 125 INPUT VOLTAGE : V [V] IN Fig.8 Circuit current (BD9001F) 1.8 1.6 1.4 1.2 1.0 0.8 Ta=25 0.6 0.4 Ta=-40 0.2 0.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 OUTPUT CURRENT : I [A] O Fig ...
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... Ta=125 0.8 Ta=25 0.6 0.4 Ta=–40 0.2 0.0 0 0.5 1 1.5 2 2.5 OUTPUT CURRENT : I [A] O Fig.15 ON resistance V =7V IN (BD9001F) 100 5V output 3.3V output 2.5V output 1.5V output 0.5 1.0 1.5 2.0 OUTPUT CURRENT : I [A] O Fig. Efficiency(V =12V,f=100kHz) ...
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... Output 3 FB Error Amp output 4 INV Output voltage feedback 5 EN Enable 6 RT Frequency setting resistor connection 7 GND Ground 8 PV Power system power supply input IN (BD9001F 220μF 1μF SOFT Vref START 23kΩ INV ERROR AMP PWM 4 - COMPARATOR - + LATCH + 10kΩ ...
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... IC, this block will turn OFF the output to latch. The overcurrent protection detection values have been set as shown below: BD9781HFP . . . 8A(Typ.) BD9001F,BD9778F/HFP . . . 4A(Typ.) Furthermore, since this overcurrent protection is an automatically reset, after the output is turned OFF and latched, the latch will be reset with the RESET signal output by each oscillation frequency. ...
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Timing chart (BD9781HFP) - While in basic operation mode V IN Internal OSC FB SW EN/SYNC - While in overcurrent protection mode I O Internal OSC SW External synchronizing function (BD9781HFP) In order to activate the external synchronizing function, connect ...
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... Select the output capacitor having a value smaller than that obtained by the formula shown below. 3. -Io(Max)) Limit C = Max Vo I imit:2A(BD9778F/HFP,BD9001F), 4A(BD9781HFP this capacitance is not optimum, faulty startup may result. ( 3.5m is soft start time(min.)) INV ...
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Design procedure 4. Selection of diode Set diode rating with an adequate margin to the maximum load current. Also, make setting of the rated inverse voltage with an adequate margin to the maximum input voltage. A diode with a low ...
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... Cx2 R2 Fig.32 BD9001F reference layout pattern ※ As shown above, design the GND pattern as large area as possible within inner layer. ※ Gray zones indicate GND. 500 450 400 350 300 250 200 150 100 50 0 100 200 300 400 500 OSCILATING FREQUENCY SETTING RESISTANCE : R Fig ...
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For output capacitors having high ESR, such as electrolyte capacitor For output capacitors that have high ESR (i.e., several Ω), the phase compensation setting procedure becomes comparatively simple. Since the DC/DC converter application has a LC resonant circuit attached ...
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Measurement of open loop of DC/DC converter To measure the open loop of DC/DC converter, use the gain phase analyzer or FRA to measure the frequency characteristics. DC/DC converter controller + Maximum load Load 0 Output voltage Heat loss ...
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... SW RT VIN VIN SW 10kΩ RT EN(BD9778F/HFP, BD9001F) FB(BD9001F) VIN EN 300kΩ 250kΩ Cautions on use 1) Absolute maximum ratings An excess in the absolute maximum ratings, such as supply voltage, temperature range of operating conditions, etc., can break down the devices, thus making impossible to identify breaking mode, such as a short circuit or an open circuit. If any over rated values will expect to exceed the absolute maximum ratings, consider adding circuit protection devices, such as fuses ...
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... SOP8 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 125 150 0 25 Single piece of IC When mounted on ROHM standard PCB (Glass epoxy PCB 1.6 mm 15/ bypass diode between each pin and V IN BD9778F BD9001F 50 75 100 125 AMBIENT TEMPERATURE Ta Fig. 150 ...
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Selection of order type ROHM model Product No. name 9778 = 36V/2A 9781 = 36V/4A 9001 = 50V/2A SOP8 <Outline dimensions> 5.0±0 0.1 1.27 0.4±0.1 HRP7 <Outline dimensions> 9.395 ± ...
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Appendix No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product ...