Power Conversion

Exar offers a complete family of DC to DC power conversion products from linear regulators and LDOs to high-performance switching regulators, controllers, and modules covering applications with currents ranging from a few mA to 35A. Exar’s Universal PMICs and Programmable Power Modules provide an exceptional level of flexibility, ease of use, remote configurability and telemetry with solutions for the system designer to the most experienced power supply designer.

The XRP6124 is a non synchronous step down (buck) controller for up to 5Amps point of loads. A wide 3V to 30V input voltage range allows for single supply operations from industry standard 3.3V, 5V, 12V and 24V power rails. With a proprietary Constant On-Time (COT) control scheme, the XRP6124 provides extremely fast line and load transient response while the operating frequency remains nearly constant. It requires no loop compensation hence simplifying circuit implementation and reducing overall component count. The XRP6124 also implements an emulated ESR circuitry allowing usage of ceramic output capacitors and insuring stable operations without the use of extra external components.

The XRP7664/7665 are synchronous current mode PWM step down (buck) regulators capable of a constant output current up to 2Amps and 3Amps. A wide 4.75V to 18V input voltage range allows for single supply operations from industry standard 5V and 12V power rails.

Power Conversion
 

Step-down Regulators

400
2.7
5.5
20
1
5
PFM
98
600
2.6
6.5
70
1.3
6
PFM
95
600
2.5
5.5
300
0.6
5
1500
94
3000
2.60
5.5
460
0.8
5
Prog.
95
800
2.7
5.5
20
0.8
5
PFM
98
800
2.7
5.5
20
0.8
5
PFM
98
1000
2.8
5.5
3000
0.9
5
1400
97
1000
2.5
5.5
15
0.6
5
1500
97
1000/1000
2.5
5.5
30
0.6
5
1500
97
1500
2.5
5.5
240
1300
95
3
36
4000
110
80
PowerBlox™

1500
4.5
18
800
1400
92
3000
2.5
28
1500
0.8
27
300
95
2000
4.5
18
1000
0.925
16
340
95
3000
4.5
18
1000
0.925
16
340
93
2000
4.50
18
1200
0.925
16
340
95
3000
2.5
20
1500
0.8
19
900
92
6000
2.5
28
1500
0.8
27
600
92
3000
4.50
18
1200
0.925
16
340
95
6000
3
22
1500
600
91
12000
3
22
1500
0.8
20.24
300
93
12000
3
22
1500
0.8
20.24
300
93
8000
4.50
22
700
0.6
18
200-800
96
12000
4.50
22
700
0.6
18
200-800
96
15000
4.50
22
700
0.6
18
200-800
96
Step-up Regulators

100
0.9
4.5
10
3.3
5
87
175
0.9
3.3
50
2
5.5
92
400
0.7
4.5
13
2
5.5
94
3
36
4000
110
80
200
1.5
4.3
400
-4.3
-8
80
93
200
1.5
5.3
3000
-5
-10
900
92
Step-down Controllers

700
5.5
40
0.8
30
Prog.
96
1500
5
24
0.8
22
600
92
1500
5
24
0.8
22
300
95
1500
3
20
0.8
10
900
94
1500
3
28
0.8
10
600
94
1500
3
28
0.8
10
300
95
500
3
5.5
0.8
5
300
95
500
3
5.5
0.8
5
500
95
500
3
5.5
1.3
5.5
500
95
950
3
7
1.3
7
550
95
500
3
30
1.2
16
Variable
92
700
4.5
22
0.6
18
200 -> 800
95
400
1.0
5.5
0.5
5
1000
96
* recently added
Linear LDOs

1500
1.4
2.625
3500
0.5%
130
0.6V
100
2.5
7
65
2.50%
250
100
2.5
7
65
2.50%
250
100
2.5
7
28
2%
160
100
2.4
30
150
0.5%, 1%
380
100
2.4
30
150
0.5%, 1%
380
150
2.5
16
70
1%
210
150
2.4
30
150
0.5%, 1%
300
200
2
6
25
2%
250
200
2.5
7
28
2%
320
250
2.4
30
150
0.5%, 1%
310
300
2.7
6
45
2%
180
300
4.1
20
150
1%
300
400
4.1
30
100
0.5%, 1%
420
500
2.7
6
45
2%
300
500
2.5
16
90
1%
340
800
2.6
15
5000
1%
1100
1000
3.2
16
12000
3%
280
1000
3
16
12000
3%
280
1000
3.1
16
18000
2% (Non-A version);1% (A version)
280
1500
2.5
12
500
1%
1300
1500
1.8
5.5
5000
2%
400
1500
2.5
10
4000
1%, 2%
1100
1500
2.5
16
12000
1.50%
390
1500
2.5
16
12000
1.50%
390
3000
1.8
5.5
5000
2%
400
3000
2.5
10
5000
1%, 2%
1100
3000
2.8
16
37000
1%
450
3000
2.8
16
37000
1%
450
3000
2.8
16
37000
1%
450
2000
1.045
2.625
3500
0.5%
40
0.6V
3000
2.25
16
40000
1%
600
5000
2.8
16
20000
1%
370
5000
2.8
16
20000
1%
370
150
2
5.5
70
1.5
350
3000
1.045
2.625
3500
0.5%
80
0.6V
5000
2.8
10
5000
1%, 2%
1100
1500
2.5
16
12000
1.50%
390
2000
1.8
6
30
2%
550
* recently added
Universal PMICs

6.5V – 20V
0.9V – 5.1V
- / -
9mA
TQFN40
-40°C to 125°C
6.5V – 20V
0.9V – 5.1V
5ohm / 1.8ohm
9mA
TQFN40
-40°C to 125°C
4.75V – 25V
0.9V – 5.1V
6ohm / 3ohm
9mA
TQFN32
-40°C to 125°C
4.75V – 25V
0.9V – 5.1V
6ohm / 3ohm
9mA
TQFN40
-40°C to 125°C
4.75V – 18V
0.6V – 5.5V
4ohm / 2ohm
4mA
TQFN44
-40°C to 125°C
4.75V – 25V
0.6V – 5.5V
4ohm / 2ohm
4mA
TQFN44
-40°C to 125°C
4.75V – 25V
0.6V – 5.5V
4ohm / 2ohm
4mA
TQFN44
-40°C to 125°C
6.5V – 20V
0.9V – 5.1V
3ohm / 1.8ohm
9mA
TQFN40
-40°C to 125°C