BD8305MUV Rohm, BD8305MUV Datasheet - Page 5

• Manufacturer Part Number: BD8305MUV
• Description: High-effciency Step-up/down Switching Regulators
• Manufacturer: Rohm

●Reference Data
○
BD8305MUV
c
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2010 ROHM Co., Ltd. All rights reserved.
(Unless otherwise specified, Ta = 25°C, VCC = 3.7 V)
0.810
0.805
0.800
0.795
0.790
-10
-15
-20
-25
-30
-35
-40
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
-5
0
0.0
-50
2
INV=0.5V
Fig.9
VCC=2.4V
Fig.6
(power supply property)
Fig.3 INV threshold
0.5
0
3
FB source current
TEMPERATURE [℃]
Oscillation frequency
FB VOLTAGE [V]
VCC=3.7V
VCC [℃]
1.0
50
4
VCC=5.5V
1.5
100
5
VCC=7.0V
150
2.0
6
Fig.4 INV threshold (power supply property)
2.6
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
300
250
200
150
100
Fig.10 Lx1 Pch FET ON resistance
0.810
0.805
0.800
0.795
0.790
50
0
-50
-60
0.0
Io=500mA
VCC=2.0V
Fig.7 UVLO threshold
-10
0
2.0
TEMPERATURE [℃]
TEMPARATURE [℃]
5/15
UVLO
VCC=3.0V
VCC [V]
50
40
4.0
DETECT
RESET
VCC=3.7V
100
90
6.0
VCC=6.0V
150
140
8.0
Fig.11 Lx1 Nch FET ON resistance
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
300
250
200
150
100
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
50
0
-60
Fig.5 Oscillation frequency
-50
0
INV=1.1V
VCC=2.0V
Io=500mA
Fig.8
-10
1
0
TEMPERATURE [℃]
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TEMPERATURE [℃]
Technical Note
2010.05 - Rev.D
FB VOLTAGE [V]
FB sink current
VCC=3.0V
40
50
2
VCC=3.7V
100
90
3
VCC=6.0V
150
140
4