BD9106FVM Rohm, BD9106FVM Datasheet

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BD9106FVM

Manufacturer Part Number
BD9106FVM
Description
(BD9102FVM / BD9104FVM / BD9106FVM) Output 1.5A or Less High Efficiency Step-down Switching Regulators
Manufacturer
Rohm
Datasheet

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Single-chip built-in FET type Switching Regulator Series
Output 1.5A or Less High Efficiency
Step-down Switching Regulators
with Built-in Power MOSFET
●Description
●Features
●Use
●Lineup
●Absolute Maximum Rating (Ta=25℃)
© 2009 ROHM Co., Ltd. All rights reserved.
www.rohm.com
BD9102FVM, BD9104FVM, BD9106FVM
ROHM’s high efficiency step-down switching regulator (BD9102FVM, BD9104FVM, BD9106FVM) is a power supply
designed to produce a low voltage including 1.24 volts from 5 volts power supply line. Offers high efficiency with our
original pulse skip control technology and synchronous rectifier. Employs a current mode control system to provide faster
transient response to sudden change in load.
Power supply for HDD, power supply for portable electronic devices like PDA, and power supply for LSI including CPU and
ASIC
Vcc voltage
Output voltage
Output current
UVLO Threshold voltage
Short-current protection with time delay function
Soft start function
Standby current
Operating temperature range
Package
VCC voltage
PVCC voltage
EN voltage
SW,ITH voltage
Power dissipation 1
Power dissipation 2
Operating temperature range
Storage temperature range
Maximum junction temperature
*1
*2
*3
1) Offers fast transient response with current mode PWM control system.
2) Offers highly efficiency for all load range with synchronous rectifier (Nch/Pch FET)
3) Incorporates soft-start function.
4) Incorporates thermal protection and ULVO functions.
5) Incorporates short-current protection circuit with time delay function.
6) Incorporates shutdown function
7) Employs small surface mount package MSOP8
Pd should not be exceeded.
Derating in done 3.1mW/℃ for temperatures above Ta=25℃.
Derating in done 4.7mW/℃ for temperatures above Ta=25℃,Mounted on 70mm×70mm×1.6mm Glass Epoxy PCB
and SLLM
TM
(Simple Light Load Mode)
Parameter
Parameter
1/17
BD9102FVM
-25~+85℃
1.24V±2%
4.0~5.5V
0.8A Max.
2.7V Typ.
0μA Typ.
www.DataSheet.co.kr
MSOP8
Symbol
SW,ITH
built-in
built-in
Tjmax
PV
Topr
Tstg
V
Pd1
Pd2
EN
CC
CC
BD9104FVM
-25~+85℃
-0.3~+7
-0.3~+7
-55~+150
3.30V±2%
4.5~5.5V
0.9A Max.
4.1V Typ.
-25~+85
0μA Typ.
-0.3~+7
-0.3~+7
MSOP8
387.5
587.4
built-in
built-in
Limits
+150
*2
*3
*1
*1
Adjustable
2009.05 - Rev.A
BD9106FVM
-25~+85℃
No.09027EAT34
4.0~5.5V
0.8A Max.
3.4V Typ.
0μA Typ.
MSOP8
built-in
built-in
Unit
mW
mW
V
V
V
V
(1.0~2.5V)
Datasheet pdf - http://www.DataSheet4U.net/

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BD9106FVM Summary of contents

Page 1

... BD9102FVM, BD9104FVM, BD9106FVM ●Description ROHM’s high efficiency step-down switching regulator (BD9102FVM, BD9104FVM, BD9106FVM power supply designed to produce a low voltage including 1.24 volts from 5 volts power supply line. Offers high efficiency with our original pulse skip control technology and synchronous rectifier. Employs a current mode control system to provide faster transient response to sudden change in load. ● ...

Page 2

... BD9102FVM, BD9104FVM, BD9106FVM ●Recommended Operating Conditions (Ta=25℃) Parameter Symbol V voltage voltage voltage SW average output current Isw *4 Pd should not be exceeded. ●Electrical Characteristics =5V,EN=V ◎BD9102FVM(Ta=25℃,V CC Parameter Standby current Bias current EN Low voltage EN High voltage EN input current Oscillation frequency *5 Pch FET ON resistance ...

Page 3

... BD9102FVM, BD9104FVM, BD9106FVM =5V,EN=V ◎BD9106FVM(Ta=25℃,V CC Parameter Standby current Bias current EN Low voltage EN High voltage EN input current Oscillation frequency *5 Pch FET ON resistance *5 Nch FET ON resistance ADJ reference voltage Output voltage ITH nk current SI ITH ource urrent S C UVLO threshold voltage UVLO hysteresis voltage ...

Page 4

... BD9102FVM, BD9104FVM, BD9106FVM ●Characteristics data ■ OUT 2 [BD9102FVM] Ta=25 ℃ 1 INPUT VOLTAGE:V [V] CC Fig.1 Vcc-Vout ■ OUT 2 V =5V [BD9102FVM] CC Ta=25 ℃ 1 VOLTAGE:VEN[V] Fig.4 Ven-Vout ■I -V OUT OUT 2 V =5V [BD9102FVM] CC Ta=25 ℃ 1 OUTPUT CURRENT:I ...

Page 5

... BD9102FVM, BD9104FVM, BD9106FVM ■SW waveform I =10mA O [BD9102FVM OUT V =5V CC Ta=25 ℃ Fig.13 SW waveform TM Io=10mA(SLLM control) ■SW waveform I =200mA O [BD9102FVM OUT V =5V CC Ta=25 ℃ Fig.16 SW waveform Io=200mA(PWM control) ■Transient response I =100mA → 600mA O [BD9102FVM] V OUT I OUT V =5V CC Ta=25 ℃ Fig.19 Transient response Io=100→600mA(10μs) ■ ...

Page 6

... BD9102FVM, BD9104FVM, BD9106FVM ■Ta-V OUT 1.28 V =5V [BD9102FVM] CC 1.27 1.26 1.25 1.24 1.23 1.22 1.21 1.2 -25 - TEMPERATURE:Ta[℃] Fig.25 Ta-V OUT ■Efficiency 100 Ta=25 ℃ [BD9102FVM 100 1000 OUTPUT CURRENT:I [mA] OUT Fig.28 Efficiency (V =EN= 24V) CC OUT ■Reference characteristics 1.2 V =5V CC 1.15 1.1 1.05 1 0.95 BD9102FVM BD9104FVM 0 ...

Page 7

... TSD 1 2 ADJ ITH Fig.40 BD9106FVM Block diagram PIN function Output voltage detect pin/ ADJ for BD9106FVM GmAmp output pin/Connected phase compensation capacitor Enable pin(Active High) Ground Nch FET source pin Pch/Nch FET drain output pin Pch FET source pin VCC power supply input pin ...

Page 8

... BD9102FVM, BD9104FVM, BD9106FVM ●Information on advantages Advantage 1:Offers fast transient response with current mode control system. Conventional product (VOUT of which is 3.3 volts) V OUT I OUT Voltage drop due to sudden change in load was reduced by 50%. Advantage 2: Offers high efficiency for all load range. ・For lighter load: ...

Page 9

... BD9102FVM, BD9104FVM, BD9106FVM ●Operation BD9102FVM, BD9104FVM, BD9106FVM are the synchronous rectifying step-down switching regulator that achieves faster transient response by employing current mode PWM control system. It utilizes switching operation in PWM (Pulse Width Modulation) mode for heavier load, while it utilizes SLLM efficiency. ○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 ...

Page 10

... BD9102FVM, BD9104FVM, BD9106FVM ●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 0 μ ...

Page 11

... BD9102FVM, BD9104FVM, BD9106FVM ●Switching regulator efficiency Efficiency ŋ may be expressed by the equation shown below: V ×I P OUT OUT OUT η= ×100[%]= Vin×Iin Pin 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: ...

Page 12

... BD9102FVM, BD9104FVM, BD9106FVM ●Selection of components externally connected 1. Selection of inductor ( Δ VOUT L Co Fig.50 Output ripple current * Current exceeding the current rating of the inductor results in magnetic saturation of the inductor, which decreases efficiency. The inductor must be selected allowing sufficient margin with which the peak current may not exceed its current rating. ...

Page 13

... CR zero correction by the error amplifier (Amp.) (Min.) 1 2π×R ×C ITH ITH 5. Determination of output voltage (for BD9106FVM only) The output voltage V is determined by the equation (7): OUT V =(R2/R1+1)×V OUT V : Voltage at ADJ terminal (0.8V Typ.) ADJ With R1 and R2 adjusted, the output voltage may be determined as required.(Adjustable output voltage range: ...

Page 14

... MCR10 5102 value manufacturer 4.7μH Sumida CMD6D11B 10μF Kyocera CM316X5R106M10A 10μF Kyocera CM316X5R106M10A 750pF murata GRM18series *BD9106FVM: As the resistance recommended for RITH depends on the output voltage, check the output voltage for determination of resistance. 14/17 Technical Note V CC ① OUT C O GND ② ...

Page 15

... BD9102FVM, BD9104FVM, BD9106FVM ●I/O equivalence circuit 1pin(V ) OUT OUT 2pin(ITH ITH 6pin(SW www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved. ※BD9106FVM 1pin(ADJ) 10kΩ ADJ 3pin(EN www.DataSheet.co.kr Fig.58 I/O equivalence circuit 15/17 Technical Note V CC 10kΩ ...

Page 16

... BD9102FVM, BD9104FVM, BD9106FVM ●Notes for 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 ...

Page 17

... BD9102FVM, BD9104FVM, BD9106FVM ●Ordering part number Part No. Part No. 9102,9104,9106 MSOP8 2.9±0.1 (MAX 3.25 include BURR) + 6° 4° −4° 1PIN MARK 0.145 0.475 S +0.05 0.22 –0.04 0.08 S 0.65 www.rohm.com © 2009 ROHM Co., Ltd. All rights reserved Package FVM: MSOP8 < ...

Page 18

... ROHM shall bear no responsibility in any way for use of any of the Products for the above special purposes Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing ...

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