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switching regulator

switching regulator circuits use power switches, inductors and diodes to transfer energy from input to output, while feedback and control circuits can be added to regulate the energy transfer and maintain a constant output. the basic components of a switching circuit are a boost converter and a buck converter, the latter being divided into a high-voltage (hv) buck and a low-voltage (lv) buck converter. we offer dc-dc switching regulator ics with high performance design to reduce system power consumption and temperature and provide stable voltage operation to further extend battery life. our dc-dc converter options offer high switching frequencies, wide input voltage ranges, efficient internal switching elements and built-in circuit protection to support a wide range of applications at our customers' end.

fitipower integrated technology inc.
boost dc/dc converter hv buck dc/dc converter lv buck dc/dc converter
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hv buck dc/dc converter

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part number
fr9204 18v, 2.5a synchronous step-down dc/dc converter fr9204f 18v, 2.5a synchronous step-down dc/dc converter fr9204fh 18v, 2.5a synchronous step-down dc/dc converter fr9205 18v, 2a synchronous step-down dc/dc converter fr9205f 18v, 2a synchronous step-down dc/dc converter fr9206 18v, 3a synchronous step-down dc/dc converter fr9206f 18v, 3a synchronous step-down dc/dc converter fr9207 new 18v, 4a synchronous step-down dc/dc converter fr9207f new 18v, 4a synchronous step-down dc/dc converter fr9208f 18v, 5a synchronous step-down dc/dc converter fr9208 18v, 5a synchronous step-down dc/dc converter fr9850 fr9208f-18v 5a synchronous step-down dc/dc converte fr9850f fr9850-18v 2a synchronous step-down dc/dc converter fr9854 18v, 4a synchronous step-down dc/dc converter fr9855 18v, 5.5a synchronous step-down dc/dc converter fr9838 new 36v, 5a, 130khz synchronous step-down dc/dc converter for charger application fr9863 new 28v, 3a synchronous step-down dc/dc converter fr9209 new 16v, 12a synchronous step-down dc/dc converter with high efficiency at light load fr9838 36v, 5a, 130khz synchronous step-down dc/dc converter for charger application fr9839/a new 36v, 5a, 130khz asynchronous step-down dc/dc converter fr9608 28v, 3a synchronous step-down dc/dc converter fr9609 28v, 3a synchronous step-down dc/dc converter with high efficiency at light load fr9855b sync. 5.5a buck internal comp. converter with fast constant on time control technique (fcot) external ss/pg fr9856b sync. 6a buck internal comp. converter with fast constant on time control technique (fcot) external vreg/pg fr9863f 28v, 3a synchronous step-down dc/dc converter

vin
(v)
(min)

vin
(v)
(max)

vout
(v)
(min)

vout
(v)
(max)

iout
(ma)

eff.%
max.

freq.
(khz)

iq
(μa)

is
(μa)

shut down

ocp

package

4.3
4.3
4.3
4.3
4.3
4.3
4.3
4.5
4.5
4.3
4.3
4.5
4.5
4.5
4.5
4.5
4.5
6
4.5
3.5
4.5
4.5
4.5
4.5
4.5
18
18
18
18
18
18
18
18
18
18
18
18
118
18
18
36
28
16
36
40
28
28
18
18
28
0.8
0.8
0.765
0.765
0.765
0.765
0.8
0.765
0.8
0.76
0.76
0.765
0.765
0.765
0.765
0.765
0.765
0.8
0.596
0.6
0.8
0.75
0.925
0.925
0.6
0.765
0.596
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
20
12
5.5
20
12
28
28
8
8
12
2500
2500
2500
2000
2000
3000
3000
4000
4000
5000
5000
2000
2000
4000
5500
5000
3000
12000
5000
5000
3000
3000
5500
6000
3000
94
94
94
94
94
94
94
94
94
94
94
94
94
94
94
97
94
94
97
92
93
93
94
94
94
500
500
1200
850
850
500
500
500
500
500
500
850
850
630
630
130
500
600

800

1000
130
adj
200~2500
340
340
630
630
500
250
250
250
250
250
250
250
400
400
400
400
250
250
600
600
1000
150
300
1000
100
1200
1200
600
600
150
1
1
1
1
1
1
1
3
3
1
1
1
1
1
1
n/a
3
1
na
1
2
2
1
1
3
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
-
v
v
-
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
v
sot-563
sot-563
sot-563
tsot-23-6
sot-23-6
sot-23-6
sot-563
tsot-23-6
sot-563
tsot-23-6
tsot-23-6
tsot-23-6
tsot-23-6
tsot-23-6
sot-23-6
sot-23-6
sop-8 (ep)
sop-8 (ep)
tdfn-10 (5x6)
tsot-23-6
tqfn-21 3x4
tdfn-10 (5x6)
sop-8 (ep)
sop-8 (ep)
sop-8 (ep)
sop-8 (ep)
tdfn-10 (3x3)
sop-8 (ep)
tsot-23-6
display ic
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subsidiary products
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