BD8643FV-E2 Rohm Semiconductor, BD8643FV-E2 Datasheet - Page 3

• Manufacturer Part Number: BD8643FV-E2
• Description: IC SWITCH REG 3A W/FET 20SSOP
• Manufacturer: Rohm Semiconductor
• Series: -r
• Type: Step-Down (Buck), PWM - Current Moder

Specifications of BD8643FV-E2

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 1 V ~ 12.6 V
• Current - Output: 3A
• Frequency - Switching: 100kHz ~ 600kHz
• Voltage - Input: 4.5 V ~ 18 V
• Operating Temperature: -20°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-LSSOP (0.240", 6.10mm Width)
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

●Reference data
BD8643FV
© 2010 ROHM Co., Ltd. All rights reserved.
www.rohm.com
Fig.5
Fig.7 Hi side FET ON_R - temperature characteristic
0.810
0.805
0.800
0.795
0.790
0.785
0.780
0.775
0.770
Fig.1 Reference voltage – temperature
320
280
240
200
160
120
320
280
240
200
160
120
340
330
320
310
300
290
280
270
260
5.6
5.4
5.2
5.0
4.8
4.6
4.4
4.2
4.0
80
40
80
40
0
0
-20
-20
-20
-20
Fig.9 Hi side FET ON_R - VIN characteristic
SS/DELAY
4
Fig.3 Frequency – temperature characteristic
Ta=25℃
VIN=12V
VIN=12V
VIN=12V
VIN=12V
-5
-5
-5
-5
6
charge current - temperature characteristic
10
10
8
10
10
10
25
25
25
25
Ta [℃]
VIN[V]
Ta [℃]
Ta [℃]
Ta [℃]
12
40
40
40
40
14
55
55
55
55
characteristic
16
70
70
70
70
18
85
85
85
85
3/13
Fig.8 Low side FET ON_R - temperature characteristic
0.810
0.805
0.800
0.795
0.790
0.785
0.780
0.775
0.770
340
330
320
310
300
290
280
270
260
320
280
240
200
160
120
320
280
240
200
160
120
5 .0
4 .5
4 .0
3 .5
3 .0
2 .5
2 .0
1 .5
1 .0
0 .5
0 .0
80
40
80
40
0
0
-20
Fig.10 Low side FET ON_R – VIN characteristic
4
4
4
4
Fig.2 Reference voltage – VIN characteristic
Fig.6 Circuit Current – VIN characteristic
Fig.4 Frequency – VIN characteristic
Ta=25℃
Ta=25℃
Ta=25℃
VIN=12V
Ta=25℃
-5
6
6
6
6
10
8
8
8
8
10
10
25
10
10
VIN[V]
VIN[V]
Ta [℃]
VIN[V]
VIN[V]
12
12
40
12
12
14
14
55
14
1 4
Technical Note
2010.09 - Rev.A
16
16
70
16
16
18
18
85
18
18