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BD9018KV Datasheet(PDF) 1 Page - Rohm

Part # BD9018KV
Description  Step-down,High-efficiency Switching Regulators (Controller type)
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Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BD9018KV Datasheet(HTML) 1 Page - Rohm

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www.rohm.com
2010.02 - Rev.A
c
2010 ROHM Co., Ltd. All rights reserved.
Large Current External FET Controller Type Switching Regulators
Step-down,High-efficiency
Switching Regulators (Controller type)
BD9018KV
Overview
The BD9018KV is a 2-ch synchronous controller with rectification switching for enhanced power management
efficiency. It supports a wide input range and leads to eco-design (low power consumption) for various electronics.
Features
1) Wide input voltage range: 3.9V~30V
2) Precision voltage references: 0.8V±1%
3) FET direct drive
4) Rectification switching for increased efficiency
5) Variable frequency: 250k~550kHz (external synchronization to 600kHz)
6) Built-in auto-recovery over-current protection
7) Separate enable-pins per CH for individual power up/down control
8) Supports various applications: step-down, step-up, and step-up-down
9) Small footprint packages: VQFP48C
10) When operating at Max Duty, the switching frequency slows down to 1/5 to reduce input/output difference.
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
Symbol
Rating
Unit
Parameter
Symbol
Rating
Unit
VCC Voltage
VCC
35
*1
V
PGOOD Voltage
PGOOD
7
V
EXTVCC Voltage
EXTVCC
35
*1
V
SS1,2 Voltage
SS1,2
VREG5
V
VCCCL1,2 Voltage
VCCCL1,2
35
*1
V
FB1,2 Voltage
FB1,2
CL1,2 Voltage
CL1,2
35
V
COMP1,2 Voltage
COMP1,2
SW1,2 Voltage
SW1,2
35
*1
V
RT Voltage
RT
BOOT1,2 Voltage
BOOT1,2
40
*1
V
SYNC Voltage
SYNC
BOOT1,2-SW1,2
Voltage
BOOT1,2-SW1,2
7
*1
V
Power Dissipation
Pd
1.1
*2
W
Operating
temperature
Topr
-40~+85
EN1,2 Voltage
EN1,2
EXTVCC
V
Storage temperature
Tstg
-55~+150
VREG5,5A
VREG5,5A
7
V
Junction
temperature
Tj
+150
*1 Regardless of the listed rating, do not exceed Pd in any circumstances.
*2 Mounted on a 70mm x 70mm x 1.6mm glass-epoxy board. Reduce by
8.8mW/℃ (VQFP48C) above 25℃.
No.10028EAT15


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