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PDF BD8306MUV Data sheet ( Hoja de datos )
| Número de pieza | BD8306MUV | |
| Descripción | Integrated 2.0A MOSFET 1ch Buck-Boost Converter | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Datasheet
1.8V to 5.5V, Integrated 2.0A MOSFET 1ch
Buck-Boost Converter
BD8306MUV
General Description
ROHM’s highly-efficient buck-boost converter
BD8306MUV produces buck-boost output voltage
including 3.3 V from two-cell or three-cell alkaline
battery, or one-cell lithium-ion battery with just one
inductor. This IC adopts the original buck-boost drive
system and creates a more efficient power supply than
the conventional SEPIC-system or H-bridge system
switching regulators.
Features
Highly-Efficient Buck-Boost DC/DC Converter
Constructed with just one Inductor.
Maximum output current changes depending on the
input and output voltages. Input current for PVCC
terminal should be less than 2.0A including the DC
current and ripple current of the inductor. Please
refer to Figure 25 and Figure 34 for details about
the maximum output current at 3.3V and 5.0V
output.
Incorporates a Soft-Start Function.
Incorporates a Timer Latch System with Short
Protection Function.
Application
General Portable Equipment
DSC
DVC
Cellular Phone
PDA
LED
Typical Application Circuit
2.8V to 5.5V, Output: 3.3V / 1.0 A, Frequency 1MHz
1100µuFF(c(ecrearmamic)ic)
mmuurartaata
GRM31CB11A106KA01
2.8V2t.o8～55.5.5VV
12 11
10
RRVVCCCC
0Ω0Ω
13
PVCC
14 VCC
Key Specifications
Input Voltage Range:
+1.8V to +5.5V
Output Voltage Range:
+1.8V to +5.2V
Output Current:
(at 3.3V Output, +2.8V to +5.5V Input) 1.0A
(at 5.0V Output, +2.8V to +5.5V Input) 0.7A
Pch FET ON-Resistance:
120mΩ(Typ)
Nch FET ON-Resistance:
100mΩ(Typ)
Standby Current:
0μA (Typ)
Operating Temperature Range:
-40°C to +85°C
Package
W (Typ) x D (Typ) x H (Max)
VQFN016V3030
3.00mm x 3.00mm x 1.00mm
9
8
PGND
LXL2x2 7
44..77uµHH
TOKO DE3518C
ON/OFF
15 STB
RRRRTT
3399kkΩΩ
16 RT
1
2
CCVVCCCC
1µ1FuF
CCFBFB
2222000pFF
RRFBFB4.47.7kkΩΩ
LXL2x2 6
VOUT
5
34
101µ0FuF(c(ceerraammiicc))
mmuruaratata
GRM31CB11A106KA01
3.3V/1.0A
RRINNVV11
565k6ΩkΩ
RRININVV2 2
1100kkΩΩ
CCCC
1120ppFF
RRCC
44..77kkΩΩ
○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
1/25
TSZ02201-0Q3Q0NZ00340-1-2
10.Aug.2016 Rev.003
1 page  
BD8306MUV
Electrical Characteristics (Unless otherwise specified Ta=25°C, VCC=3V)
Parameter
Symbol
Min
Limit
Typ
Max
Unit
Conditions
[Under Voltage Lock Out Circuit]
Reset Voltage
Hysteresis Width
VUV
ΔVUVHY
-
50
1.7 1.8 V VCC sweep up
100 150 mV
[Oscillator]
Frequency
fOSC 0.9 1.0 1.1 MHz RRT=39KΩ
[Error AMP]
Input Threshold Voltage
VINV
0.495 0.500 0.505
V
Input Bias Current
Soft Start Time
IINV -50 0 +50 nA VCC=7.0V , VINV=3.5V
tSS
0.60
1.00
1.40 msec RRT=39kΩ
Output Source Current
IEO 10 20 30 µA VINV=0.2V , VFB =1.5V
Output Sink Current
IEI 0.6 1.2 2.4 mA VINV=0.8V , VFB =1.5V
[PWM Comparator]
LX1 Max Duty
DMAX1
-
- 100 % High side ON Duty
LX2 Max Duty
DMAX2
77
85
93 % Low side ON Duty
[Output]
LX1 PMOS ON-Resistance
LX1 NMOS ON-Resistance
LX2 PMOS ON-Resistance
LX2 NMOS ON-Resistance
VOUT Discharge Switch
RON1P
RON1N
RON2P
RON2N
RDVO
-
-
-
-
-
120 200 mΩ VGS=3.0V
100 160 mΩ VGS=3.0V
120 200 mΩ VGS=3.0V
100 160 mΩ VGS=3.0V
100 160 Ω VGS=3.0V, on at STB OFF
LX1 OCP Threshold
IOCP 2.0 3.0 - A PVCC=3.0V
LX1 Leak Current
ILEAK1
-1
0
+1 µA
LX2 Leak Current
ILEAK2
-1
0
+1 µA
[STB]
STB Pin
Control
Voltage
Enable
Disable
STB Pull Down Resistance
VSTBH
1.5
-
5.5 V
VSTBL
-0.3
-
+0.3
V
RSTB
250 400 700 kΩ
[Circuit Current]
Stand-By
VCC Pin
ISTB1
-
-
1 µA
Current
PVCC Pin
VCC Circuit Current
PVCC Circuit Current
VOUT Circuit Current
ISTB2
ICC1
ICC2
ICC3
- - 1 µA
-
500
750
µA
(Note 2)VINV=0.8V,
stop DC/DC
-
10
20
µA
(Note 2)VINV=0.8V,
stop DC/DC
-
10
20
µA
(Note 2)VINV=0.8V,
stop DC/DC
(Note 2) ICC1, ICC2, ICC3 are currents flowing to VCC, PVCC, VOUT terminals. When the input voltage of INV pin is 0.8V, DC/DC converter operation stops.
Total input current on DC/DC converter operation would be greater than the limit mentioned above. Please refer to Figure 26 and Figure 35 for details about the
total input current under DC/DC converter operation at 3.3V and 5.0V output.
www.rohm.com
©2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/25
TSZ02201-0Q3Q0NZ00340-1-2
10.Aug.2016 Rev.003
5 Page 
BD8306MUV
Application Information
1. Application Circuit [1] Input: 2.8V to 5.5V, Output: 3.3V / 1.0A, Frequency 1MHz
1100µuFF(cerraammiicc))
murata
GRM31CB11A106KA01
2.8V2t.o8～5.5.V5V
12 11 10
9
RRVVCCCC
0Ω
13
PVCC
8
PGND
14 VCC
LXLx22 7
44.7.u7HμH
TOKO DE3518C
ON/OFF
15 STB
LXLx22 6
RRRRRRTTT
39kΩ
16 RT
VVOOUUTT
5
1234
1100µuFF(cerraammiicc))
murata
GRM31CB11A106KA01
3.3V/1.0A
C1C1µ1VVμuFCCFFCC
CCFFBB
2200pF
RRFFBB44.7.7kkΩΩ
Figure 18. Example of Application Circuit [1]
RRIINNVV11
56kΩ
RRIINNVV22
10kΩ
CC
120pF
RC
4.7kΩ
2. Application Circuit [2] Input: 2.8V to 5.5V, Output: 5.0V / 0.7A, Frequency 1MHz
10μF (ceramic)
murata
GRM31CB11A106KA01
2.8～52.58～V 5.5V
RRVVCCCC
0Ω
12 11 10 9
13
PVCC
14
VCC
8
PGND
LLXx2 7
ON/OFF
15
STB
LLXx22 6
16 RT
VVOOUUTT 5
RRRRTT
39kΩ
1234
4.47.u7HμH
TOKO DE3518C
1100μuF(c(ceerarammici)c)
murata
GRM31CB11A106KA01
5.0V/0.7A
3.3V/1.0A
CVCCVCC1CµF1uF
CCFBB
2200pF
RRFFBB
4.7kΩ
Figure 19. Example of Application Circuit [2]
RRININVV1 1
82kΩ
RRININV2V2
9.1kΩ
CC
120pF
RC
4.7kΩ
www.rohm.com
©2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/25
TSZ02201-0Q3Q0NZ00340-1-2
10.Aug.2016 Rev.003
11 Page | ||
| Páginas | Total 29 Páginas | |
| PDF Descargar | [ Datasheet BD8306MUV.PDF ] | |
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