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BD93291EFJ PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 BD93291EFJ
기능 Dual Synchronous Buck Converter
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BD93291EFJ 데이터시트, 핀배열, 회로
Datasheet
Dual Synchronous Buck Converter
BD93291EFJ
Description
The BD93291EFJ is a dual synchronous buck converter.
It integrates wide input voltage range (8.0V to 26V) synchronous
buck converter and low input voltage (Vout1 : 5.0V)
synchronous buck converter.
The IC also incorporates a new technology called
H3RegTM, a Rohm proprietary control method which
facilitates ultra-high transient response against changes in
load. SLLM (Simple Light Load Mode) technology is also
integrated to improve efficiency when powering lighter
loads. For protection and ease of use, the IC also
incorporates soft start.
Space-saving and high efficient switching regulator can be
achieved due to built-in N-MOSFET power transistor in
HTSOP-J8 package.
Applications
Distributed Power System
Pre-Regulator for Linear Regulator
Typical Application Circuit
VOUT2 C_UP
R_DW
R_UP
C_CO2
L2
C_CO3
Thermal Pad
(to be shorted to GND)
Features
Dual Synchronous Buck Converter in small package.
standby mode ( Istandby = 0uA )
High Voltage Synchronous Buck Converter(Vout1)
- Wide input range(8.0V to 26V) *absolute voltage 30V
- H3RegTM DC/DC Converter Controller included
- Output Current 1.7A *1
- FET on resistance High-side 0.175Ω/Low-side 0.175Ω
- Internal soft-start function
- Switching Frequency 300 to 600kHz
(*According to input/output conditions)
- Fixed output voltage (5.0V ± 1.5%; Normal Mode)
Low Voltage Synchronous Buck Converter(Vout2)
- Input voltage range 5.0V(VOUT1)
- H3RegTM DC/DC Converter Controller included
- Output Current 0.5A *1
- FET on resistance High-side 0.25Ω/Low-side 0.25Ω
- Internal soft-start function
- Switching Frequency 1.5M to 2.5MHz
(*According to input/output conditions)
- Feedback voltage (0.8V ± 1.5%; Normal Mode)
Protection Circuits
Under Voltage Lockout Protection
Thermal Shutdown
Over Current Protection
HTSOP-J8 Package with Exposed thermal PAD.
*1 Vout1 maximum output current capability is 2.5A, and
Vout2 maximum output current capability is 1.5A with the
optimal PCB power consumption design.
Structure
Silicon Monolithic Integrated Circuit
Package
HTSOP-J8
6.00mm x 4.90mm x 1.00mm
PIN Configuration (TOP VIEW)
VOUT1
C_CO1
L1
C_BS
C_VC1
BD93291EFJ
Product structureSilicon monolithic integrated circuit
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product is not designed protection against radioactive rays
1/21
TSZ02201-0323AAJ00300-1-2
12. Nov. 2012 Rev.001




BD93291EFJ pdf, 반도체, 판매, 대치품
BD93291EFJ
Datasheet
Electrical characteristics (unless otherwise specified VIN=14V, VOUT1=5V, VOUT2=3.3V Ta=25)
Parameter
Symbol
High Voltage Synchronous Buck Converter
Output Voltage
VOUT1
Hi-side FET On-resistance
Lo-side FET On-resistance
RONH1
RONL1
Hi/Lo-side FET Leak current
ILEAK1
Switch Current Limit
Soft-start time
ILIMIT1
VSS1
ON Time
TON1
Minimum Off Time
T OFF1
Low Voltage Synchronous Buck Converter
Feed-back Voltage
VFBL
FBL input bias current
IFBL
Hi-side FET On-resistance
Lo-side FET On-resistance
RONH2
RONL2
Hi/Lo-side FET Leak current
ILEAK2
Switch Current Limit
Soft-start time
ILIMIT2
VSS1
ON Time
TON2
Minimum Off Time
General
T OFF3
Limits
Unit
Min Typ Max
Conditions
4.925
-
-
-
3.0
2.5
635
-
5.0
0.175
0.175
0
-
5.0
794
200
5.075
-
-
10
-
7.5
953
-
V ±1.5%,normal mode
ISW= -0.8A
ISW= 0.8A
VIN= 26V,
µA VSW = 0V / 26V
A
ms
Fsw1=450kHz(typ)
ns Iout=0.3A
ns
0.788
-1.0
-
-
-
2.0
1.25
264
-
0.8
0
0.25
0.25
0
-
2.5
330
50
0.812
1.0
-
-
10
-
3.75
396
-
V ±1.5%,normal mode
µA
ISWL= -0.8A
ISWL= 0.8A
VOUT1= 5.5V,
µA VSWL = 0V / 5.5V
A
ms
Fsw2=2MHz(typ)
ns Iout=0.2A
ns
Enable Sink current
Enable Threshold voltage 1
Enable Threshold voltage 2
VIN Under Voltage Lockout threshold
VIN Under Voltage Lockout Hysteresis
VOUT Under Voltage Lockout threshold
VOUT Under Voltage Lockout Hysteresis
Circuit Current VIN
IEN
VEN_R
VEN_F
VUVLO1
VHYS1
VUVLO2
VHYS2
ICC_VIN
33 56
2.2 2.3
1.7 1.8
7.1 7.5
- 1.0
2.3 2.5
- 0.2
- 0.6
Circuit Current VOUT
ICC_VOUT
-
0.6
Standby Current
IQUI - 0
* This product is not designed for protection against radioactive rays
73 µA VEN= 14V
2.4 V Rising
1.9 V Falling
7.9 V VIN rising
-V
2.7 V VOUT rising
-V
VOUT= 5.5V, VEN=
1.5 mA 14V
VFBL= 1.0V, VEN=
1.5 mA 14V
5 µA VEN= 0V
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
4/21
TSZ02201-0323AAJ00300-1-2
12. Nov. 2012 Rev.001

4페이지










BD93291EFJ 전자부품, 판매, 대치품
BD93291EFJ
Datasheet
Typical Performance Curves (Unless otherwise noted Ta=25, VIN=14V, VOUT1=5V, VOUT2=3.3V) (Continued)
EN
2V/div
IIN
1A/div
VOUT1
2V/div
VOUT2
2V/div
4msec/div
VOUT1
2V/div
EN
2V/div
VOUT2
2V/div
IIN
1A/div
4msec/div
Figure 12. Start up wave form
(VIN=14V, VOUT1=5V, VOUT2=3.3V, L1=22H,
L2=2.2H, COUT1=22F, COUT2=2.2F, Iout1=2A,
Iout2=1A)
Figure 13. Off wave form
(VIN=14V, VOUT1=5V, VOUT2=3.3V, L1=22H,
L2=2.2H, COUT1=22F, COUT2=2.2F, Iout1=2A,
Iout2=1A)
VOUT1 (AC)
200mV/div
SW
20V/div
Iout1
2A/div
1
Iout1 0A->2A/10us
10sec/div
Iout1 2A->0A/10us
VOUT1 (AC)
200mV/div
SW
20V/div
Iout1
2A/div
10sec/div
Figure 14. VOUT1 Transient Response
(VIN=14V, VOUT1=5V, L=22H, COUT=22F)
Iout=0->2A (SR=0.2A/sec)
Figure 15. VOUT1 Transient Response
(VIN=14V, VOUT1=5V, L=22H, COUT=22F)
Iout=2->0A (SR=0.2A/sec)
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
7/21
TSZ02201-0323AAJ00300-1-2
12. Nov. 2012 Rev.001

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BD93291EFJ

Dual Synchronous Buck Converter

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