Step-Down (Buck) Regulators
Step-down regulators, also known as buck regulators, are used to lower the input voltage to the desired output level with higher efficiency than an LDO. A step-down regulator integrates power FET ICs, providing a monolithic power converter.
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18V 720KHz 2A Fast-PWM Synchronous Step-Down Converter
1
2
4.5
18
250
0.6
18
720
2
94
SOT-23-6
3.2 x 3
Fast pulse-width modulation (PWM) COT control
Patented COT control; UVLO, OTP, soft-start, hiccup, PGOOD; Current limit and short protection
-40 to 85
18V 720KHz 3A Fast-PWM Synchronous Step-Down Converter
1
3
4.5
18
250
0.6
18
720
2
95
SOT-23-6
3.2 x 3
Fast pulse-width modulation (PWM) COT control
Patented COT control; UVLO, OTP, soft-start, hiccup, PGOOD; Current limit and short protection
-40 to 85
18V 700KHz 8A Fast-PWM Synchronous Step-Down Converter
1
8
3
18
150
0.6
18
700
1
95
QFN-16
3 x 3
Fast pulse-width modulation (PWM) COT control
Patented COT control; UVLO, OTP, soft-start, hiccup, PGOOD; Current limit and short protection
-40 to 85
MxL76125
22V, 15A, Synchronous Buck Regulator with 2-Bit VID
Active
22V, 15A, Synchronous Buck Regulator with 2-Bit VID
1
15
1
22
800
0.6
18
200 to 1250
1
96
QFN-23
4 x 5
Proprietary emulated current mode COT
2-Bit VID, Light Load PFM, Enable, Power Good, Power Sequencing, Synchronous Rectification, Thermal Shutdown, UVLO, Built-in 5V LDO, Soft Start Adjustable, Internal Compensation, Adjustable Current Limit
-40 to 125
17V, 5A, Synchronous Buck Regulator
1
5
4.5
17
320
0.6
6
500, 1000
1
94
QFN-10
2 x 2
Fixed frequency COT
Patented COT control, UVLO, OCP, OTP, soft-start, latch, hiccup, PGOOD, Current limit and short protection
-40 to 125
800mA 1.5MHz Synchronous Step-Down Converter
1
0.8
2.5
5.5
30
0.6
5
1500
2.0
95
SOT23-5
-
Current Mode PWM
Light Load PFM, Enable, Over Current Protection, Synchronous Rectification, Thermal Shutdown, 100% Duty Cycle
-40 to 85
8A Synchronous Step-Down COT Regulator
1
8
3
22
700
0.6
18
200-800
0.5
96
QFN-30
5x5
Proprietary emulated current mode COT
Light Load PFM, Enable, Power Good, Power Sequencing, Synchronous Rectification, Thermal Shutdown, UVLO, Built-in 5V LDO, Soft Start Adjustable, Internal Compensation, Adjustable Current Limit
-40 to 125
12A Synchronous Step-Down COT Regulator
1
12
3
22
700
0.6
18
200-800
0.5
96
QFN-30
5x5
Proprietary emulated current mode COT
Light Load PFM, Enable, Power Good, Power Sequencing, Synchronous Rectification, Thermal Shutdown, UVLO, Built-in 5V LDO, Soft Start Adjustable, Internal Compensation, Adjustable Current Limit
-40 to 125
15A, 22V Synchronous Step-Down COT Regulator
1
15
4.5
22
800
0.6
18
200-1000
0.5
97
QFN-17
5x6
Proprietary emulated current mode COT
Light Load PFM, Enable, Power Good, Power Sequencing, Synchronous Rectification, Thermal Shutdown, UVLO, Built-in 5V LDO, Soft Start Adjustable, Internal Compensation, Adjustable Current Limit
-40 to 125
20A, 22V Synchronous Step-Down COT Regulator
1
20
4.5
22
800
0.6
18
200-1000
0.5
97
QFN-17
5x6
Proprietary emulated current mode COT
Light Load PFM, Enable, Power Good, Power Sequencing, Synchronous Rectification, Thermal Shutdown, UVLO, Built-in 5V LDO, Soft Start Adjustable, Internal Compensation, Adjustable Current Limit
-40 to 125
3A 40V Synchronous Step-Down COT Regulator
1
3
3
40
700
0.6
30
100-800
0.5
95
QFN-30 5x5
5x5
Proprietary emulated current mode COT
Light Load PFM, Enable, Power Good, Power Sequencing, Synchronous Rectification, Thermal Shutdown, UVLO, Built-in 5V LDO, Soft Start Adjustable, Internal Compensation, Adjustable Current Limit
-40 to 125
5A 40V Synchronous Step-Down COT Regulator
1
5
3
40
700
0.6
30
100-800
0.5
96
QFN-30 5x5
5x5
Proprietary emulated current mode COT
Light Load PFM, Enable, Power Good, Power Sequencing, Synchronous Rectification, Thermal Shutdown, UVLO, Built-in 5V LDO, Soft Start Adjustable, Internal Compensation, Adjustable Current Limit
-40 to 125
8A 40V Synchronous Step-Down COT Regulator
1
8
3
40
700
0.6
30
100-800
0.5
96
QFN-30
5x5
Proprietary emulated current mode COT
Light Load PFM, Enable, Power Good, Power Sequencing, Synchronous Rectification, Thermal Shutdown, UVLO, Built-in 3.3/5V LDO, Soft Start Adjustable, Internal Compensation, Adjustable Current Limit
-40 to 125
1A Synchronous Step-Down Regulator
1
1
2.5
5.5
30
0.6
5
1500
<3.0
97
SOT23-5
-
Current Mode PWM
Light Load PFM, Enable, Over Current Protection, Synchronous Rectification, Thermal Shutdown, UVLO, 100% Duty Cycle
-40 to 125
