BD9845FV-E2 Rohm Semiconductor, BD9845FV-E2 Datasheet - Page 4

• Manufacturer Part Number: BD9845FV-E2
• Description: IC REG SW STEP DOWN 1CH 14-SSOP
• Manufacturer: Rohm Semiconductor
• Type: Step-Down (Buck)r

Specifications of BD9845FV-E2

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Current - Output: 1A
• Frequency - Switching: 100kHz ~ 1.5MHz
• Voltage - Input: 3.6 ~ 35 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 14-SSOP
• Power - Output: 500mW
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: BD9845FV-E2TR

●Reference data
© 2009 ROHM Co., Ltd. All rights reserved.
BD9845FV
www.rohm.com
100
Fig.22 Output ON resistance L
90
80
70
60
50
40
30
20
10
0
Fig.16 Oscillation frequency
120
110
100
temperature characteristics
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
40
35
30
25
20
15
10
1.4
90
80
5
0
C5V
Fig.13 SS source current
Fig.19 Output Duty-VDT
characteristics (100kHz)
-50
0
0.2
Ta=85°C
-25
Ambient Temperature: Ta(°C)
Ta=25°C
1.6
DT Input Voltage: VDT(V)
C5V
-0.05
Ta=-40°C
0.4
(RONH)
SS Voltage: VSS(V)
0
VCC=6.0V
0.6
VCC=6.0V
VCC=6V
VOUT(V)
25
C5V
1.8
-0.10
0.8
VCC=6.0V
Ta=25°C
50
1
CCP=1800pF
75
C5V
-0.15
1.2
2
100
1.4
C5V
-0.20
125
1.6
2.2
Fig.17 DT bias current
7
6
5
4
3
2
1
0
100
90
80
70
60
50
40
30
20
10
0
35
30
25
20
15
10
0
Fig.23 STB flow-in current
500
450
400
350
300
250
200
150
100
Fig.14 SS sink current
5
0
1.4
50
0
0
Fig.20 Output Duty-VDT
characteristics (1.5MHz)
0
Ta=85°C
0.5
Ta=25°C
DT Input Voltage: VDT(V)
Ta=-40℃
5
4/15
0.5
1.6
DT Input Voltage: VDT(V)
Ta=-40°C
SS Voltage: VSS(V)
VCC=6.0V
Ta=25°C
Ta=25
10
VCC=6.0V
Ta=25°C
1
15
VSTB(V)
VCC=35V
1
1.8
Ta=85
VCC=6.0V
1.5
20
25
1.5
2
2
30
2.5
35
2
2.2
40
voltage temperature characteristics
7
6
5
4
3
2
1
0
Fig.21 Output ON resistance H
5
4
3
2
1
0
0
temperature characteristics
70
65
60
55
50
45
40
35
30
40
35
30
25
20
15
10
Fig.24 Overcurrent detection
-50
5
0
Fig.15 SS source current
VCC
-50
Fig.18 DT sink current
Ta=85°C
-25
0.5
-25
Ambient Temperature: Ta(°C)
Ta=85°C
Ta=25°C
Ambient Temperature: Ta(°C)
DT Input Voltage: VDT(V)
VCC
Ta=25°C
-0.05
Ta=-40°C
0
Ta=-40°C
0
(RONH)
1
VOUT(V)
2009.05 - Rev.A
Technical Note
VCC=6V
25
25
VCC
-0.10
50
1.5
50
VCC=6.0V
VCC=6.0V
VCC=6.0V
Ta=25°C
75
VCC
75
-0.15
2
100
100
VCC
-0.20
2.5
125
125