BD8649EFV Datasheet, PDF (1/14 Pages) Rohm – Flexible Step-down Switching Regulator with Built-in Power MOSFET

Single-chip Type with Built-in FET type Switching Regulators
Flexible Step-down
Switching Regulator
with Built-in Power MOSFET
BD8649EFV
No.10027EAT45
●Description
The BD8649EFV is a synchronous step-down switching regulator that integrates 2 low resistances N-channel MOSFETs.
It achieves 3A continuous output current over a wide input supply range.
Current mode operation provides fast transient response and easy phase compensation.
●Feature
1) Synchronous rectification with built-in FET type DC/DC converter
2) 3.0A output current
3) Range of operation power-supply voltage 4.5V～18V
4) Reference voltage FB 0.8V±1%
5) Programmable frequency 100kHz～600kHz
6) Over current protection function
7) Thermal shutdown function
8) Under voltage protection
9) Soft start time out function / Soft start delay circuit
10) Programmable OFFLATCH time
●Applications
FPD,DVD,HDD Recorder,STB,Amusement,Other
●Absolute maximum rating (Ta=25℃)
Parameter
Symbol
Ratings
Unit
Input supply voltage
V_IN
20
V
BOOT terminal voltage
V_BOOT
28
V
EN terminal voltage
Input terminal voltage
V_EN
GND-0.3 ～ V_IN+0.3
V
V_INP*1
GND-0.3 ～ 7
V
SW terminal voltage
Output current
Power dissipation
V_SW
GND-0.3 ～ V_IN+0.3
V
I_OUT
3.5^*2
A
Pd
3.2^*2
W
Operating temperature
Topr
-20 ～ 85
℃
Storage temperature
Tstg
-55 ～ 150
℃
*1 V_INP Application terminal: SS/DELAY, FB, FC, RT, PSET
*2 (70mm×70mm, thickness 1.6mm, and four layer glass epoxy substrates)When mounting substrate and the package
back exposure part are connected with solder
Operating at higher than Ta=25℃, 25.6mW shall be reduced per 1
●Operation condition
Parameter
Symbol
Ratings
Min.
Typ.
Max.
Unit
Input supply voltage
V_IN
4.5
-
18.0
V
Output current
I_OUT
-
-
3.0
A
* This product is not designed for protection against radioactive rays.
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2010.09 - Rev.A