Datasheet
2.1V(or 2.5V) to 5.5V, 1.5A 1ch
Boost Converter with Integrated FET
BD8152FVM
BD8158FVM
Key Specifications
Input Voltage Range:
BD8152FVM
2.5V to 5.5V
BD8158FVM
2.1V to 5.5V
Switching Frequency:
600 kHz/1,200 kHz
250mΩ(Typ)
Integrated FET R
ON
Feedback Voltage:
1.245 ± 1%
Ultra-Low Current Consumption:
0µA (Typ)
Operating Temperature Range:
BD8152FVM -40°C to +85°C
BD8158FVM -40°C to +125°C
General Description
BD8152FVM and BD8158FVM are 1-Channel boost
converter which uses low voltage FET. The input
voltage is 2.5V to 5.5V for BD8152FVM and 2.1V to
5.5V for BD8158FVM achieving a low power
consumption. The high accuracy feedback voltage
(±1%) is established and the brightness dispersion of
TFT-LCD panel is suppressed.
Features
Current Mode PWM System
Built-In Under-Voltage Lockout Protection Circuit
Built-In Over-Current Protection Circuit
Built-In Thermal Shutdown Circuit
Package
W (Typ) x D (Typ) x H (Max)
Applications
Panels for the Satellite Navigation System
Laptop PC( 7 to17 inches)
TFT-LCD Panels
MSOP8
2.90mm x 4.00 mm x 0.90mm
Typical Application Circuit
L
Vo
V
CC
Cin
COMP
Rc
VCC,PVCC
FCLK,ENB
SW
Co
GND,PGND
Cc
Figure 1. Typical Application Circuit
〇Product
structure : Silicon monolithic integrated circuit
.
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111
•
14
•
001
〇This
product has no designed protection against radioactive rays
1/23
TSZ02201-0323AAJ00550-1-2
09.Sep.2014 Rev.001
BD8152FVM
BD8158FVM
Pin Configuration
(TOP VIEW)
MSOP8
COMP
FB
ENB
GND
1
2
3
4
8
7
6
5
SS
FCLK
VCC
SW
Figure 2. Pin Configuration
Pin Description
Pin No.
1
2
3
4
5
6
7
8
Pin Name
COMP
FB
ENB
GND
SW
VCC
FCLK
SS
Error amp output
Error amp inversion input pin
Control input pin
Ground pin
N-Channel power FET drain output
Power supply input pin
Frequency switching pin
Soft-start current output pin
Function
Block Diagram
SS
8
FCLK
7
VCC
6
SW
5
CURRENT
SENSE
SLOPE
OS
+
Set
SOFT
START
PWM
+ -
OCP
Reset
LOGIC
DRV
SDWN
ERR
- +
VREF
1.245V
UVLO/TSD
1
COMP
2
FB
3
ENB
4
GND
Figure 3. Block Diagram
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
2/23
TSZ02201-0323AAJ00550-1-2
09.Sep.2014 Rev.001
BD8152FVM
BD8158FVM
Absolute Maximum Ratings (Ta = 25°C)
Parameter
Power Supply Voltage Range
Power Dissipation
Storage Temperature Range
Switch Pin Current
Switch Pin Voltage
Maximum Junction Temperature
Symbol
V
CC
Pd
Tstg
I
SW
V
SW
Tjmax
Limit
7
0.58
(Note1)
-55 to +150
1.5
(Note2)
15
150
Unit
V
W
°C
A
V
°C
(Note 1) Reduced by 4.7 W/°C over 25°C, when mounted on a glass epoxy board (70 mm x 70 mm x 1.6 mm).
(Note 2) Must not exceed Pd.
Caution:
Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short
circuit between pins or an open circuit between pins. Therefore, it is important to consider circuit protection measures, such
as adding a fuse, in case the IC is operated over the absolute maximum ratings.
Recommended Operating Conditions (Ta = 25°C)
Parameter
Power Supply Voltage Range
Switch Current
Switch Pin Voltage Range
Operating Temperature
Range
BD8152FM
BD8158FM
BD8152FM
BD8158FM
Symbol
V
CC
I
SW
V
SW
Topr
Min
2.5
2.1
-
-
-40
-40
Limit
Typ
3.3
2.5
-
-
-
-
Max
5.5
4.0(5.5)
(Note3)
1.4
14
+85
+125
Unit
V
V
A
V
°C
°C
(Note3) Specified at 600kHz switching operation.
Electrical Characteristics
BD8152FVM (Unless otherwise specified, Ta = 25°C; V
CC
= 3.3V; V
ENB
= 3.3V)
Limit
Parameter
Symbol
Min
Typ
Max
[Triangular Waveform Oscillator]
Oscillating Frequency 1
f
OSC1
540
600
660
Oscillating Frequency 2
f
OSC2
1.08
1.20
1.32
[Over-Current Protection Circuit]
Over-Current Limit
I
SW
-
2
-
[Soft-Start Circuit]
SS Source Current
I
SO
6
10
14
[Under-Voltage Lockout Protection Circuit]
OFF Threshold Voltage
V
UTOFF
2.1
2.2
2.3
ON Threshold Voltage
V
UTON
2.0
2.1
2.2
[Error Amp]
Input Bias Current
I
B
-
0.1
0.5
Feedback Voltage
V
FB
1.232
1.245
1.258
[Output]
ON-Resistance
R
ON
-
250
380
Max Duty Ratio
D
MAX
72
80
88
[ENB]
ENB ON Voltage
V
ON
V
CC
x0.7
V
CC
-
ENB OFF Voltage
V
OFF
-
0
V
CC
x0.3
[Overall]
Standby Current
I
STB
-
0
10
Average Consumption Current
I
CC
-
1.2
2.4
(Note 4) Design guarantee (No total shipment inspection is made.)
Unit
Conditions
kHz
MHz
A
µA
V
V
µA
V
mΩ
%
V
V
µA
mA
V
FCLK
= 0V
V
FCLK
= V
CC
V
SS
= 0.5V
Buffer
(Note 4)
I
SW
= 1 A
R
L
= 100 Ω
V
ENB
= 0 V
No Switching
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
3/23
TSZ02201-0323AAJ00550-1-2
09.Sep.2014 Rev.001
BD8152FVM
BD8158FVM
Electrical Characteristics – continued
BD8158FVM (Unless otherwise specified, Ta = 25°C; V
CC
= 2.5V; V
ENB
= 2.5V)
Limit
Parameter
Symbol
Min
Typ
Max
[Triangular Waveform Oscillator]
Oscillating Frequency 1
f
OSC1
480
600
720
Oscillating Frequency 2
f
OSC2
0.96
1.20
1.44
[Over-Current Protection Circuit]
Over-Current Limit
I
SW
-
2
-
[Soft-Start Circuit]
SS Source Current
I
SO
6
10
14
[Under-Voltage Lockout Protection Circuit]
OFF Threshold Voltage
V
UTOFF
1.7
1.8
1.9
ON Threshold Voltage
V
UTON
1.6
1.7
1.8
[Error Amp]
Input Bias Current
I
B
-
0.1
0.5
Feedback Voltage
V
FB
1.232
1.245
1.258
[Output]
ON-Resistance
R
ON
-
250
-
Max Duty Ratio
D
MAX
-
85
-
[ENB]
ENB ON Voltage
V
ON
V
CC
x0.7
V
CC
-
ENB OFF Voltage
V
OFF
-
0
V
CC
x0.3
[Overall]
Standby Current
I
STB
-
0
10
Average Consumption Current
I
CC
-
1.2
2.4
(Note 5) Design guarantee (No total shipment inspection is made.)
Unit
Conditions
kHz
MHz
A
µA
V
V
µA
V
mΩ
%
V
V
µA
mA
V
FCLK
= 0V
V
FCLK
= V
CC
V
SS
= 0.5 V
Buffer
(Note 5)
I
=1A
R
L
= 100 Ω
SW
V
ENB
= 0 V
No Switching
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
4/23
TSZ02201-0323AAJ00550-1-2
09.Sep.2014 Rev.001
BD8152FVM
BD8158FVM
Typical Performance Curves
(Unless otherwise specified, Ta = 25°C)
2.000
Standby Current: I
CC
[µA]
STANDBY CURRENT:Icc [uA]
1.500
1.000
125°C
Supply Current: I
CC
[mA]
0.500
0.000
-0.500
-1.000
-1.500
-2.000
0
1
2
3
4
SUPPLY
Voltage: V
CC
[V]
Supply
VOLTAGE:Vcc [V]
25°C
-40°C
-40°C
25°C
125°C
Supply Voltage: V
CC
[V]
Figure 4. Supply Current vs Supply Voltage
Figure 5. Standby Current vs Supply Voltage
1.260
0
Reference Voltage: V
REF
[V]
REFERENCE VOLTAGE:VREF[V]
1.255
1.250
1.245
1.240
1.235
1.230
-40
-15
10
35
60
85
110
-4
SS Current: I
SS
[µA]
SS CURRENT:ISS[uA]
-8
-12
-16
-20
Ambient Temperature: Ta[°C]
AMBIENT TEMPERATURE:Ta [℃]
0
0.5
1
1.5
2
SS Voltage: V
SS
[V]
SS VOLTAGE:VSS[V]
Figure 7. SS Current vs SS Voltage
Figure 6. Reference Voltage vs Temperature
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/23
TSZ02201-0323AAJ00550-1-2
09.Sep.2014 Rev.001
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
