BD9111NV_09 Datasheet, PDF (1/14 Pages) Rohm – Output 2A or More High Efficiency Step-down Switching Regulator with Built-in Power MOSFET

Single-chip built-in FET type Switching Regulator Series
Output 2A or More High Efficiency
Step-down Switching Regulator
with Built-in Power MOSFET
BD9111NV
No.09027EAT32
●Description
ROHM’s high efficiency step-down switching regulator BD9111NV is a power supply designed to produce a low voltage
including 3.3 volts from 5 volts power supply line. Offers high efficiency with our original pulse skip control technology and
synchronous rectifier. Employs a current mode control system to provide faster transient response to sudden change in load.
●Features
1) Offers fast transient response with current mode PWM control system.
2) Offers highly efficiency for all load range with synchronous rectifier (Nch/Pch FET)
and SLLM^TM (Simple Light Load Mode)
3) Incorporates soft-start function.
4) Incorporates thermal protection and ULVO functions.
5) Incorporates short-current protection circuit with time delay function.
6) Incorporates shutdown function
7) Employs small surface mount package : SON008V5060
●Use
Power supply for LSI including DSP, Micro computer and ASIC
●Absolute Maximum Ratings (Ta=25℃)
Parameter
Symbol
Limits
Unit
VCC Voltage
PVCC Voltage
VCC
PVCC
-0.3～+7 ^*1
V
-0.3～+7 ^*1
V
EN Voltage
VEN
-0.3～+7
V
SW,ITH Voltage
Power Dissipation 1
Power Dissipation 2
VSW,VITH
-0.3～+7
V
Pd1
900^*2
mW
Pd2
3900^*3
mW
Operating temperature range
Topr
-25～+105
℃
Storage temperature range
Tstg
-55～+150
℃
Maximum junction temperature
Tjmax
+150
℃
*1 Pd should not be exceeded.
*2 Derating in done 7.2mW/℃ for temperatures above Ta=25℃, Mounted on 70mm×70mm×1.6mm Glass Epoxy PCB (the density of copper:3%)
*3 Derating in done 31.2mW/℃ for temperatures above Ta=25℃, Mounted on JESD51-7.
●Operating Conditions (Ta=25℃)
Parameter
VCC Voltage
PVCC Voltage
EN Voltage
SW average output current
*4 Pd should not be exceeded.
Symbol
VCC ^*4
PVCC ^*4
VEN
Isw ^*4
Limits
Min.
Typ.
Max.
Unit
4.5
5.0
5.5
V
4.5
5.0
5.5
V
0
-
VCC
V
-
-
2.0
A
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2009.05 - Rev.A