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PDF BD8303MUV Data sheet ( Hoja de datos )
| Número de pieza | BD8303MUV | |
| Descripción | 2.7V to 14V Synchronous Buck-Boost Controller | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Datasheet
2.7V to 14V
Synchronous Buck-Boost Controller
BD8303MUV
General Description
BD8303MUV is ROHM’s high efficiency step-up/step-down
switching regulator IC. It produces output of 3.3V / 5V from
1 cell of lithium battery, 4 batteries, or 2 cells of Li batteries
with just one inductor.
This IC uses an original step-up/step-down drive system
and provides a higher efficient power supply than
conventional SEPIC-system or H-bridge system switching
regulators.
Key Specifications
Input Voltage Range:
Reference Volatage Accuracy :
Standby Current:
Operating Temperature Range:
+2.7V to +14V
1.25%
0μA(Typ)
-25°C to +85°C
Package
W(Typ) x D(Typ) x H(Max)
Features
Highly-Efficient Step-Up/Step-Down DC/DC
Converter Implemented with Just One Inductor
Supports High-Current Applications with External
N-Channel FET
Incorporates a Soft-Start Function
Incorporates a Timer-Latch System with Short
Circuit Protection Function
Applications
General Portable Equipment
DVC
Single-Lens Reflex Cameras
Portable DVDs
Mobile PCs
VQFN016V3030
3.00mm x 3.00mm x 1.00mm
Typical Application Circuit
VCC=4.0~14V, VOUT＝8.4V, IOUT＝100mA ~ 1500mA
VCC =
4.0V – 14V
Insert a filter
as required.
0.1μF
27kΩ
7.5kΩ
100pF
100kΩ
4700pF
3.9kΩ
200kΩ
RT
INV
FB
GND
1μF
RB521CS-30
RB521CS-30
0.1μF
47μF
RSS065N03
4.7μH
(TDK SLF10165) RSS065N03
VOUT (set at 8.4 V)
SW1
LG1
PGND
LG2
RSS065N03
RSS065N03
47μF x 2
ON/OFF
0.1μF
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product has no designed protection against radioactive rays
1/23
TSZ02201-0Q3Q0NZ00320-1-2
16.Feb.2015 Rev.002
1 page  
BD8303MUV
Electrical Characteristics (Unless otherwise specified, Ta = 25°C, VCC = 7.4V)
Parameter
Target Value
Symbol
Minimum Typical Maximum
UVLO
Detection Threshold Voltage
Hysteresis Range
VUV
ΔVUVHY
-
50
2.4 2.6
100 200
Oscillator
Oscillation Frequency
Regulator
fOSC 480 600 720
Output Voltage
Error AMP
VREG
4.7
5.1
5.5
INV Threshold Voltage
VINV
0.9875
1.00
1.0125
Input Bias Current
IINV -50 0 +50
Soft-Start Time
Output Source Current
Output Sink Current
PWM Comparator
tSS 2.4 4.0 5.6
IEO 10 20 30
IEI 0.6 1.3 3
SW1 Max Duty
SW2 Max Duty
SW2 Min Duty
Output
DMAX1
85
90
95
DMAX2
85
90
95
DMIN2
5
10
15
HG1, 2 High side ON-Resistance
HG1, 2 Low side ON-Resistance
LG1, 2 High side ON-Resistance
LG1, 2 Low side ON-Resistance
HG1-LG1 Dead Time
HG2-LG2 Dead Time
STB
RONHP
RONHN
RONLP
RONLN
tDEAD1
tDEAD2
-
-
-
-
50
50
48
48
48
48
100 200
100 200
STB pin
Control Voltage
Operation
VSTBH
2.5
-
VCC
No-Operation
VSTBL
-0.3
-
+0.3
STB Pin Pull-Down Resistance
RSTB 250 400 700
Circuit Current
Standby Current
VCC Pin
VCC Circuit Current
BOOT1 and BOOT2 Circuit Current
ISTB
-
-
1
ICC1 - 650 1000
ICC2 - 120 240
Unit
V
mV
kHz
V
V
nA
msec
μA
mA
%
%
%
Ω
Ω
Ω
Ω
nsec
nsec
V
V
kΩ
μA
μA
μA
Conditions
VREG monitor
RRT=51kΩ
VCC=12.0V, VINV=6.0V
RRT=51kΩ
VINV=0.8V , VFB=1.5V
VINV=1.2V , VFB=1.5V
HG1 ON
LG2 ON
LG2 OFF
VINV=1.2V
VINV=1.2V
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/23
TSZ02201-0Q3Q0NZ00320-1-2
16.Feb.2015 Rev.002
5 Page 
BD8303MUV
Application Information
1. Package Heat Reduction Curve
Ambient Temperature [°C]
Figure 19. Power Dissipation vs Ambient Temperature
Heat Reduction Curve (IC alone)
when used at Ta = 25°C or more, it is reduced by 4.96 mW/°C.
2. Example of Application Circuit
(1) Application Circuit [1]: Input: 2.7V to 5.5V, Output: 3.3V / 100mA to 2000mA
Insert a filter as
required.
0.1μF
43kΩ
7.5kΩ
150pF
51kΩ
10000pF
6.2kΩ
100kΩ
RT
INV
FB
GND
VCC =
2.7 V – 5.5 V
1μF RB521CS-30
RB521CS-30
SW1
LG1
PGND
LG2
0.1μF
22μF
RTQ045N03
4.7μH
(TDK SLF10165) RTQ045N03
VOUT (set at 3.3 V)
47μF
RTQ045N03
RTQ045N03
ON/OFF
0.1μF
Figure 20. Example of Application Circuit [1]
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/23
TSZ02201-0Q3Q0NZ00320-1-2
16.Feb.2015 Rev.002
11 Page | ||
| Páginas | Total 27 Páginas | |
| PDF Descargar | [ Datasheet BD8303MUV.PDF ] | |
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