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BD1482EFJ の電気的特性と機能
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BD1482EFJのメーカーはROHM Semiconductorです、この部品の機能は「Synchronous Buck Converter integrated FET」です。 |
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製品の詳細 ( Datasheet PDF )
| 部品番号 BD1482EFJ |
| 部品説明 Synchronous Buck Converter integrated FET |
| メーカ ROHM Semiconductor |
ロゴ |
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Datasheet
4.2V to 18V, 2A 1ch
Synchronous Buck Converter integrated FET
BD1482EFJ
●General Description
The BD1482EFJ is a synchronous step-down
switching regulator that integrates 2 low ON-resistance
N-channel MOSFETs. It achieves 2A continuous
output current over a wide input supply range. Current
mode operation provides fast transient response and
easy phase compensation.
●Features
Low ESR Output Ceramic Capacitors are
Available
Low Standby Current during Shutdown Mode
380 kHz Fixed Operating Frequency
Feedback voltage
0.923V ± 1.5%(Ta=25℃),
0.923V ± 2.0%(Ta=-25℃ to 85℃)
Protection Circuits
Under Voltage Lockout Protection
Thermal Shutdown
Over Current Protection
●Key Specifications
Input voltage range:
4.2V to 18V
Output voltage range:
0.923V to (Vin×0.7)V
Output current:
2.0A (Max.)
Switching Frequency
380kHz(Typ.)
Hi-side FET On-resistance:
0.15Ω(Typ.)
Lo-side FET On-resistance:
0.13Ω(Typ.)
Standby current:
15μA (Typ.)
Operating temperature range:
-40℃ to +85℃
●Package
HTSOP-J8
(Typ.) (Typ.) (Max.)
4.90mm x 6.00mm x 1.00mm
●Applications
Distributed Power System
Pre-Regulator for Linear Regulator
●Typical Application Circuit
C_SS
0.1μF
HTSOP-J8
C_PC
3300pF
R_PC
7.5kΩ
R_DW
15kΩ
R_UP
39kΩ
Thermal Pad
(to be shorted to GND)
VIN 12V
C_VC1
10μF
L
10µH
VOUT 3.3V
C_CO1
20μF
※R_BS protect from VIN-BST short destruction.
Fig.1 Typical Application Circuit
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
©2012 ROHM Co., Ltd. All rights reserved.
TSZ22111･14･001
○This product is not designed protection against radioactive rays.
TSZ02201-0333AD100130-1-2
1/17 06.Aug.2012 Rev.001
1 Page
BD1482EFJ
●Absolute Maximum Ratings(Ta = 25℃)
Parameter
Symbol
Ratings
Unit
Supply Voltage
VIN 20 V
Switch Voltage
Power Dissipation for HTSOP-J8
Package thermal resistance θja *2
Package thermal resistance θjc *2
VSW
Pd
θja
θjc
20
3760 *1
29.27
3.75
V
mW
℃/W
℃/W
Operating Temperature Range
Topr
-40 to +85
℃
Storage Temperature Range
Tstg
-55 to +150
℃
Maximum Junction Temperature
Tjmax
150
℃
BST Voltage
VBST
VSW+7
V
EN Voltage
VEN 20 V
All other pins
VOTH
20 V
*1 Derating in done 30.08 mW/℃ for operating above Ta≧25℃(Mount on 4-layer 70.0mm×70.0mm×1.6mm board)
*2 Mount on 4-layer 50mm x 30mm x 1.6mm application board
Datasheet
●Operating Ratings (Ta= -40 to 85℃)
Parameter
Supply Voltage
SW Voltage
Output current
Output voltage range
Symbol
VIN
VSW
ISW3
VRANGE
Min
4.2
-0.5
-
0.923
Ratings
Typ
12
-
-
-
Max
18
18
2
VIN x 0.7
Unit
V
V
A
V
●Electrical Characteristics (Unless otherwise specified VIN=12V Ta=25℃)
Parameter
Limits
Symbol
Min Typ
Error amplifier block
FB input bias current
IFB - 0.02
Feedback voltage1
VFB1
0.910 0.923
Feedback voltage2
VFB2
0.906 0.923
SW block
High-side FET On-resistance
RONH
- 0.15
Low-side FET On-resistance
RONL
- 0.13
High/Low-side FET Leak current
ILEAKN
-
0
Switch Current Limit
ILIMIT3
3.5
-
Maximum duty cycle
MDUTY
-
90
General
Enable Sink current
IEN 45 90
Enable Threshold voltage
VEN 0.6 1.2
Under Voltage Lockout threshold
VUVLO
3.5 3.75
Under Voltage Lockout Hysteresis
VHYS
-
0.3
Soft Start Current
ISS 5 10
Soft Start Time
TSS - 22
Operating Frequency
FOSC 300 380
Circuit Current
ICC - 1.2
Standby Current
IQUI - 15
Max
2
0.938
0.942
-
-
10
-
-
135
1.4
4.0
-
15
-
460
3
27
Unit Conditions
µA
V Voltage follower
V Ta=-25℃ to 85℃
Ω ISW= -0.8A
Ω ISW= 0.8A
µA
VIN= 18V,
VSW = 0V / 18V
A
% VFB= 0V
µA VEN= 12V
V
V VIN rising
V
µA VSS= 0 V
ms CSS= 0.1 µF
kHz
mA VFB= 1.5V, VEN= 12V
µA VEN= 0V
www.rohm.com
©2012 ROHM Co., Ltd. All rights reserved.
TSZ22111･15･001
3/17
TSZ02201-0333AD100130-1-2
06.Aug.2012 Rev.001
3Pages
BD1482EFJ
●Typical Performance Curves
(Unless otherwise specified, VIN= 12V Ta = 25℃) (Continued)
Datasheet
Fig.12 Soft Start Time
VOUT
VOUT-MIN: -43.5mV
VOUT-MAX: +37.5mV
VOUT: 50mV/div
IOUT
IOUT: 1.0A/div
500usec/div
Fig.13 Transient Response
(VIN= 12V VOUT= 3.3V L= 10µH Cout =22µF Iout= 0.2-1.0A )
VOUT
⊿: +22.8mV
VOUT: 20mV/div
VOUT
IOUT
VOUT-MAX: +87mV
VOUT-MIN: -98mV
VOUT: 100mV/div
IOUT: 1.0A/div
500usec/div
Fig.14 Output Ripple Voltage
(VIN= 12V VOUT= 3.3V L= 10µH Cout =22µF Iout= 1.0A )
Fig.15 Transient Response
(VIN= 12V VOUT= 3.3V L= 10µH Cout =22µF Iout= 0.2-2.0A)
www.rohm.com
©2012 ROHM Co., Ltd. All rights reserved.
TSZ22111･15･001
6/17
TSZ02201-0333AD100130-1-2
06.Aug.2012 Rev.001
6 Page
合計 : 20 ページ |
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| 部品番号 | 部品説明 | メーカ |
| BD1482EFJ | Synchronous Buck Converter integrated FET | ROHM Semiconductor |