BD8152FVM_1 Datasheet, PDF (1/18 Pages) Rohm – High-efficiency Step-up Switching Regulators with Built-in Power MOSFET

Single-chip Type with Built-in FET Switching Regulator Series
High-efficiency
Step-up Switching Regulators
with Built-in Power MOSFET
BD8152FVM,BD8158FVM
No.10027EBT20
Description
BD8152FVM,BD8158FVM are the 1-channel step-up switching regulator which builds in the low voltage FET. Input voltage
is 2.5 V to 5.5 V (BD8152FVM), 2.1V to 5.5V(BD8158FVM) realizing the low consumption power. High accuracy feedback
voltage 1% is established and the brightness dispersion of TFT-LCD panel is suppressed.
Features
1) Current mode PWM system
2) Input voltage is 2.5 V to 5.5 V (BD8152FVM), 2.1 V to 5.5 V (BD8158FVM, providing the low power input)
3) Switching frequency is variable as 600 kHz/1,200 kHz.
4) Built-in 0.25 Ω power switch
5) Feedback voltage 1.245  1%
6) Built-in under-voltage lockout protection circuit
7) Built-in overcurrent protection circuit
8) Built-in thermal shutdown circuit
Applications
7 to 17 inches panels for the satellite navigation system, laptop PC
TFT-LCD panels
Absolute maximum ratings (Ta = 25℃)
Parameter
Symbol
Limit
Unit
Power supply voltage
Vcc
7
V
Power dissipation
Pd
588*
mW
Operating temperature range
BD8152FVM
BD8158FVM
Topr
−40 to +85
−40 to +125
℃
Storage temperature range
Tstg
−55 to +150
℃
Switch pin current
Isw
1.5**
A
Switch pin voltage
Vsw
15
V
Maximum junction temperature
Tjmax
150
℃
* Reduced by 4.7 mW/℃ over 25℃, when mounted on a glass epoxy board (70 mm  70 mm  1.6 mm).
** Must not exceed Pd.
Recommended Operating Ranges (Ta = 25℃)
Parameter
Power supply voltage (BD8152FVM)
Power supply voltage (BD8158FVM)
Switch current
Switch pin voltage
*Specified at 600kHz switching operating.
Symbol
Min.
Limit
Typ.
Max.
Unit
Vcc
2.5
3.3
5.5
V
Vcc
2.1
2.5
4.0(5.5)*
V
ISW
-
1.4
A
VSW
-
-
14
V
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
1/17
2010.03 - Rev.B