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BD9011KV Dataheets PDF



Part Number BD9011KV
Manufacturers Rohm
Logo Rohm
Description High-efficiency Switching Regulators
Datasheet BD9011KV DatasheetBD9011KV Datasheet (PDF)

TECHNICAL NOTE Large Current External FET Controller Type Switching Regulator Step-down, High-efficiency Switching Regulators (Controller type) BD9011EKN , BD9011KV , BD9775FV ■ BD901 1EKN, BD9011KV ●Overview The BD9011EKN/KV is a 2-ch synchronous controller with rectification switching for enhanced power management efficiency. It supports a wide input range, enabling low power consumption ecodesign for an array of electronics. ●Features 1) Wide input voltage range: 3.9V to 30V 2) Precision vol.

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TECHNICAL NOTE Large Current External FET Controller Type Switching Regulator Step-down, High-efficiency Switching Regulators (Controller type) BD9011EKN , BD9011KV , BD9775FV ■ BD901 1EKN, BD9011KV ●Overview The BD9011EKN/KV is a 2-ch synchronous controller with rectification switching for enhanced power management efficiency. It supports a wide input range, enabling low power consumption ecodesign for an array of electronics. ●Features 1) Wide input voltage range: 3.9V to 30V 2) Precision voltage references: 0.8V±1% 3) FET direct drive 4) Rectification switching for increased efficiency 5) Variable frequency: 250k to 550kHz (external synchronization to 550kHz) 6) Built-in selected OFF latch and auto remove over current protection 7) Built-in independent power up/power down sequencing control 8) Make various application , step-down , step-up and step-up-down 9) Small footprint packages: HQFN36V, VQFP48C ●Applications Car audio and navigation systems, CRTTV,LCDTV,PDPTV,STB,DVD,and PC systems,portable CD and DVD players, etc. ●Absolute Maximum Ratings (Ta=25℃) Parameter S EXTVCC Voltage VCCCL1,2 Voltage CL1,2 Voltage SW1,2 Voltage BOOT1,2 Voltage BOOT1,2-SW1,2 Voltage STB, EN1,2 Voltage VREG5,5A VREG33 VREG SS1,2、FB1,2 ymbol EXTVCC VCCCL1,2 CL1,2 SW1,2 BOOT1,2 BOOT1,2-SW1,2 7 STB, EN1,2 VREG5,5A 7 33 SS1,2、FB1,2 Rating 34 34 *1 *1 Unit Parameter S COMP1,2 Voltage ymbol COMP1,2 DET1,2 RT、SYNC Rating Unit V V V V V DET1,2 Voltage RT、SYNC Voltage VREG5 V 34 34 40 *1 *1 0.875 (HQFN36V) Power Dissipation Pd 1.1 (VQFP48C) *2 *2 W *1 V V V W VCC VREG5 VREG5 V V Operating temperature Storage temperature Junction temperature Topr Tstg Tj +150 -40 to +105 -55 to +150 ℃ ℃ ℃ *1 Regardless of the listed rating, do not exceed Pd in any circumstances. *2 Mounted on a 70mm x 70mm x 0.8mm glass-epoxy board. De-rated at 7.44mW/℃(HQFN36V) or 8.8mW/℃(VQFP48C) above 25℃. Sep. 2008 http://www.Datasheet4U.com ●Operating conditions (Ta=25℃) Parameter S Input voltage 1 Input voltage 2 BOOT-SW voltage Carrier frequency Synchronous frequency Synchronous pulse duty Min OFF pulse *1 After more than 4.5V, voltage range. *2 In case of using less than 6V, Short to VCC, EXTVCC and VREG5. ymbol EXTVCC VCC BOOT-SW OSC SYNC Duty TMIN Min. 3.9 *1 *2 Typ. 12 Max. 30 30 VREG5 Unit V V V kHz 3.9 *1 *2 12 4.5 5 250 300 550 OSC 40 50 100 550 60 - kHz % nsec ★This product is not designed to provide resistance against radiation. ●Electrical characteristics (Unless otherwise specified, Ta=25℃ VCC=12V STB=5V EN1,2=5V) Parameter S VIN bias current Shutdown mode current [Error Amp Block] Feedback reference voltage Feedback reference voltage (Ta=-40 to 105℃) Open circuit voltage gain VO input bias current [FET Driver Block] HG high side ON resistance HG low side ON resistance LG high side ON resistance LG low side ON resistance [Oscillator] Carrier frequency Synchronous frequency [Over Current Protection Block] CL threshold voltage CL threshold voltage (Ta=-4.


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