TECHNICAL NOTE
Large Current External FET Controller Type Switching Regulator
Step-down, High-efficiency Switching Regu...
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...