BD8960NV-E2 Rohm Semiconductor, BD8960NV-E2 Datasheet
BD8960NV-E2
Specifications of BD8960NV-E2
Related parts for BD8960NV-E2
BD8960NV-E2 Summary of contents
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... BD8960NV ●Description ROHM’s high efficiency step-down switching regulator BD8960NV is a power supply designed to produce a low voltage including 1 volts from 5.5/3.3 volts power supply line. Offers high efficiency with synchronous rectifier. Employs a current mode control system to provide faster transient response to sudden change in load. ...
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... V =0.6V ADJ 2.600 V V =3→0V CC 2.700 V V =0→ SCP/TSD operated V ×0 =1.2→0V OUT OUT OUT Input 7 Current PV CC Current Comp Sense/ Protect CLK Driver 6 Logic OSC SW 5 PGND 4 GND ITH Fig.2 BD8960NV Block Diagram PIN function 2010.04 - Rev.B Output ...
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... BD8960NV ●Characteristics data (Reference data) 3.0 =2.5V】 【V OUT Ta=25℃ 2.5 Io=0A 2.0 1.5 1.0 【V =1.8V】 OUT Ta=25℃ 0.5 Io=2A 0 INPUT VOLTAGE:V [V] CC Fig.3 Vcc-Vout 1.85 =1.8V】 【V OUT 1.84 VCC=3.3V 1.83 Io=0A 1.82 1.81 1 ...
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... BD8960NV ●Characteristics data (Reference data) – Continued 1.2 Ta=25℃ 1.1 1 0.9 0.8 2.7 3.1 3.5 3.9 4.3 4.7 5.1 INPUT VOLTAGE:V [V] CC Fig.12 Vcc-Fosc =1.8V】 【V OUT V OUT I OUT VCC=3.3V Ta=25℃ Fig. 15 Transient response Io=1A→2A(10μs) www.rohm.com © ...
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... CC DC/DC Convertor Controller R ITH C ITH www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. BD8960NV (Load response I =0.1A→0.6A OUT 110mV I OUT Fig.17 Comparison of transient response ・Output capacitor Co required for current mode control: 22μF ceramic capacitor ・Inductance L required for the operating frequency of 1 MHz: 2.2μH inductor ...
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... BD8960NV ●Operation BD8960NV is a synchronous rectifying step-down switching regulator that achieves faster transient response by employing current mode PWM control system. ○Synchronous rectifier It does not require the power to be dissipated by a rectifier externally connected to a conventional DC/DC converter IC, and its P.N junction shoot-through protection circuit limits the shoot-through current during operation, by which the power dissipation of the set is reduced. ○ ...
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... BD8960NV ●Description of operations ・Soft-start function EN terminal shifted to “High” activates a soft-starter to gradually establish the output voltage with the current limited during startup, by which it is possible to prevent an overshoot of output voltage and an inrush current. ・Shutdown function With EN terminal shifted to “Low”, the device turns to Standby Mode, and all the function blocks including reference voltage circuit, internal oscillator and drivers are turned to OFF. Circuit current during standby is 0μ ...
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... BD8960NV ●Switching regulator efficiency Efficiency ŋ may be expressed by the equation shown below: V ×I P OUT OUT η= ×100[%]= Vin×Iin Efficiency may be improved by reducing the switching regulator power dissipation factors P Dissipation factors resistance dissipation of inductor and FET：PD(I 2) Gate charge/discharge dissipation：PD(Gate) 3) Switching dissipation： ...
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... (ΔI : Output ripple current, and f: Switching frequency) L =0.2×2A=0.4A, for example,(BD8960NV) L =2.05μ → 2.2[μ Output capacitor should be selected with the consideration on the stability region and the equivalent series resistance required to smooth ripple voltage. Output ripple voltage is determined by the equation (4)： ...
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... BD8960NV 4. Determination of RITH, CITH that works as a phase compensator As the Current Mode Control is designed to limit a inductor current, a pole (phase lag) appears in the low frequency area due filter consisting of a output capacitor and a load resistance, while a zero (phase lead) appears in the high frequency area due to the output capacitor and its ESR ...
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... CITH and RITH between the pins ITH and GND as neat as possible with least necessary wiring. * SON008V5060 (BD8960NV) has thermal FIN on the reverse of the package. The package thermal performance may be enhanced by bonding the FIN to GND plane which take a large area of PCB. ...
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... BD8960NV ●Recommended components Lists on above application Symbol Part L Coil C Ceramic capacitor IN C Ceramic capacitor O C Ceramic capacitor ITH R Resistance ITH * The parts list presented above is an example of recommended parts. Although the parts are sound, actual circuit characteristics should be checked on your application carefully before use. Be sure to allow sufficient margins to accommodate variations between external devices and this IC when employing the depicted circuit with other circuit constants modified ...
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... BD8960NV ●Notes of use 1. Absolute Maximum Ratings While utmost care is taken to quality control of this product, any application that may exceed some of the absolute maximum ratings including the voltage applied and the operating temperature range may result in breakage. If broken, short-mode or open-mode may not be identified expected to encounter with special mode that may exceed the absolute maximum ratings requested to take necessary safety measures physically including insertion of fuses ...
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... BD8960NV ●Ordering part number Part No. Part No. SON008V5060 5.0±0.15 1PIN MARK 0.08 S 4.2±0.1 1.27 C0. +0. 0.4 -0.04 0.59 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved Package NV : SON008V5060 <Tape and Reel information> Tape Embossed carrier tape Quantity 2000pcs E2 Direction The direction is the 1pin of product is at the upper left when you hold ...
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