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BD9536FV Dataheets PDF



Part Number BD9536FV
Manufacturers Rohm
Logo Rohm
Description 2ch Switching Regulator
Datasheet BD9536FV DatasheetBD9536FV Datasheet (PDF)

High Performance Regulators for PCs 2ch Switching Regulator for Desktop PC BD9536FV No.10030EAT35 ●Description BD9536FV is a 2ch switching regulator controller that can generate low output voltages (0.7V to 5.5V) from a wide input voltage range (7.5V to 15V). High efficiency for the switching regulator can be achieved due to its internal N-MOSFET power transistor. The IC also incorporates a new technology called H3RegTM, a Rohm proprietary control method which facilitates ultra-high transient .

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High Performance Regulators for PCs 2ch Switching Regulator for Desktop PC BD9536FV No.10030EAT35 ●Description BD9536FV is a 2ch switching regulator controller that can generate low output voltages (0.7V to 5.5V) from a wide input voltage range (7.5V to 15V). High efficiency for the switching regulator can be achieved due to its internal N-MOSFET power transistor. The IC also incorporates a new technology called H3RegTM, a Rohm proprietary control method which facilitates ultra-high transient response against changes in load. For protection and ease of use, the IC also incorporates soft start, variable frequency, and short circuit protection with timer latch functions. This switching regulator is specially designed for DRAM and power supplies for graphics chips. ●Features 1) 2ch H3RegTM DC/DC converter controller 2) Thermal Shut down (TSD), Under-Voltage Lock-Out (UVLO), Adjustable Over Current Protection (OCP): detected FET Ron, Over Voltage Protection (OVP), Short Circuit Protection (SCP) built-in 3) Soft start function to minimize rush current during startup 4) Adjustable switching frequency (f = 200 kHz – 600 kHz) 5) SSOP-B28 Package 6) Built-in 5V power supply for FET driver 7) Integrated bootstrap diode ●Applications LCD, Game Consoles, Desktop PCs www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 1/18 2010.07 - Rev.A BD9536FV Technical Note ●Maximum Absolute Ratings (Ta=25℃) Parameter Symbol Input Voltage VIN BOOT Voltage BOOT1/2 BOOT-SW Voltage BOOT1-SW1, BOOT2-SW2 HG-SW Voltage HG1-SW1, HG2-SW2 Ratings 16 *1 23 *1 7 *1 7 *1 Unit V V V V LG Voltage Output Voltage LG1/2 VOUT1/2 5VReg 7 *1 V V Output Feedback Voltage FB1/2 5VReg V FS Voltage 5VReg Voltage FS1/2 5VReg 5VReg 7 *1 V V Current Limit Setting Voltage Logic Input Voltage Power dissipation 1 Power dissipation 2 ILIM1/2 EN1/2, CTL1/2 Pd1 Pd2 5VReg 7 *1 0.8 *2 1.06 *3 V V W W Operating Temperature Range Topr -20~+100 ℃ Storage Temperature Range Tstg -55~+150 ℃ Junction Temperature Tjmax +150 *1 Not to exceed Pd. *2 Reduced by 6.4mW for each increase in Ta of 1℃ over 25℃ (when not mounted on a heat radiation board ) *3 Reduced by 8.5mW for increase in Ta of 1℃ over 25℃. (when mounted on a board 70.0mm×70mm×1.6mm Glass-epoxy PCB.) ℃ ●Operating Conditions (Ta=25℃) Parameter Symbol Input voltage VIN BOOT voltage BOOT1/2 SW Voltage SW1/2 BOOT-SW voltage BOOT1-SW1, BOOT2-SW2 Logic Input Voltage EN1/2, CTL1/2 Output Voltage VOUT1/2 MIN ON Time tonmin ★ This product should not be used in a radioactive environment. Ratings Min. Max. 7.5 15 4.5 20 -0.7 15 4.5 5.5 0 5.5 0.7 5.5 - 100 Unit V V V V V V ns www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. 2/18 2010.07 - Rev.A BD9536FV Technical Note ●Electrical Characteristics (Unless otherwise noted, Ta=25℃, VCC=5V, VIN=12V, VEN1=VEN2=3V, VOUT1=VOUT2=1.8V, RFS=75kΩ) Parameter Symbol Limits Unit Min. Typ. Max. Condition [General] VIN Bias Current IIN - 1.6 2.5 mA VIN Standby Current IIN_stb - 0 10 µA VEN1=VEN2=0V EN Low Voltage 1,2 VEN_low1,2 GND - 0.3 V EN High Voltage 1,2 VEN_high1,2 2.2 - 5.5 V EN Bias Current 1,2 IEN1,2 - 14 20 µA [5V Linear Regulator] 5VReg Standby Voltage 5VReg Output Voltage Maximum Current 5Vreg_stb - - 0.1 V VEN1=VEN2=0V 5VReg 4.8 5.0 5.2 V VIN=7.5V to 15V Ireg=0mA to 10mA IReg 50 - - mA [Under-Voltage Lock-Out] 5VReg Threshold Voltage 5VReg_UVLO 3.75 4.20 4.65 V 5VReg:Sweep up 5VReg Hysteresis Voltage d5VReg_UVLO 100 160 220 mV 5VReg:Sweep down [OVP Block] FB Threshold Voltage 1,2 [H3REGTM Control Block] FB_OVP1,2 0.75 0.85 0.95 V ON Time1 ton1 480 600 720 ns RFS1=75kΩ MAX ON Time 1 Tonmax1 3.0 4.0 5.0 µs MIN OFF Time 1 Toffmin1 600 900 - ns ON Time 2 Ton2 480 600 720 ns RFS2=75kΩ MAX ON Time 2 Tonmax2 3.0 4.0 5.0 µs MIN OFF Time 2 Toffmin2 600 900 - ns [FET Block] HG High side ON Resistance 1,2 HG Low side ON Resistance 1,2 LG High side ON Resistance 1,2 LG Low side ON Resistance 1,2 RHGhon1,2 RHGlon1,2 RLGhon1,2 RLGlon1,2 - 3.0 6.0 Ω 2.0 4.0 Ω 2.0 4.0 Ω 0.5 1.0 Ω [Over Current Protection Block] Current Limit Threshold Voltage1_1,2 Reverse Current Limit Threshold Voltage 1_1,2 Vilim11,2 80 100 120 mV RILIM=100k VReIlim11,2 80 100 120 mV RILIM=100k [Output Voltage Detection Block] FB1 threshold Voltage 1 FB1-1 0.615 0.625 0.635 V CTL1/2=0V or 3V FB1 threshold Voltage 2 FB1-2 0.640 0.650 0.660 V CTL1=0V, CTL2=3V FB1 threshold Voltage 3 FB1-3 0.590 0.600 0.610 V CTL1=3V, CTL2=0V FB2 threshold Voltage FB2 0.640 0.650 0.660 V CTL Low Voltage 1,2 VCTL_low1,2 GND - 0.5 V CTL High Voltage 1,2 VCTL_high1,2 VCC-0.5 - VCC V FB1/2 Input Current IFB -1 - 1 µA VOUT Discharge Current IVOUT 5 10 - mA VOUT=1V, EN=0V [SCP Block] Threshold Voltage 1,2 Charge Current (SCP) Vthscp1,2 ISCP REF1/2× REF1/2× REF1/2× 0.70 0.80 0.90 V 1 2 3 µA Charge Current (OVP) IOVP 4 8 12 µA Delay Setting .


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