Power-Supply Cookbook
Maxim has developed an extensive range of power supplies for a wide variety of applications. In the table below, choose the specifications that most closely meet your needs. Then view a circuit design that includes a schematic diagram and bill of materials. You can also download all the designs in one PDF document (PDF, 9MB)
Evaluation boards and custom variations of these designs are available to qualified customers. Please contact your local Maxim sales office to request a sample of an assembled circuit.
Download all the Power-Supply Cookbook designs in one PDF document (PDF, 9MB)
Also see: Isolated Power-Supply Reference Guides
More information:
| Click on heading to sort column. |
| Topology |
VIN |
VOUT |
IOUT |
Key Features |
Part No. |
View Circuit |
| Inverting |
12V |
-5V |
2A |
300kHz PWM, external FET |
MAX1846 |
|
| Inverting |
3V to 5.5V |
-12V |
0.4A |
300kHz PWM, external FET |
MAX1846 |
|
| Inverting |
12V |
-48V |
0.1A |
300kHz PWM, external FET |
MAX1846 |
|
| Inverting |
12V |
-72V |
0.1A |
300kHz PWM, external FET |
MAX1846 |
|
| Inverting |
3.3V |
-3.6V |
1.2A |
300kHz PWM, external FET |
MAX1846 |
|
| Inverting |
12V |
-12V |
0.25A |
300kHz PWM, external FET |
MAX1846 |
|
| Inverting |
12V |
-48V |
0.1A |
300kHz PWM, external FET, transformer |
MAX1847 |
|
| Inverting, multi-output |
12V |
-65V -24V |
0.1A 0.52A |
250kHz PWM, external FET, transformer, SLIC supply |
MAX1856 |
|
| Inverting, multi-output |
5V |
-72V -24V |
0.06A 0.15A |
250kHz PWM, external FET, transformer, SLIC supply |
MAX1856 |
|
| Step-Down, multi-output |
24V |
3.3V 5V |
7A 1A |
200kHz PWM, external FET |
MAX1864 |
|
| Step-Down, multi-output |
9V to 16V |
3.3V 2.5V 5V 12V |
1.8A 1.4A 0.3A 0.5A |
200kHz PWM, external FET |
MAX1865 |
|
| Step-Down, multi-output |
10V to 18V |
3.3V 2.5V 5V -5V |
1.3A 0.9A 0.35A 0.18A |
200kHz PWM, external FET |
MAX1865 |
|
| Step-Down, multi-output |
24V |
7V 5V -5V |
0.5A 1A 0.1A |
200kHz PWM, external FET |
MAX1865 |
|
| Step-Down |
10V to 20V |
5V |
1A |
200kHz PWM, external FET, 95% efficiency |
MAX1864 |
|
| Step-Down |
5V |
1V |
6A |
200kHz PWM, external FET, Low Voltage Output |
MAX1864 |
|
| Step-Down, multi-output |
9V to 16V |
3.3V 1.8V 5V 12V -12V |
1.5A 1A 0.5A 0.4A 0.1A |
200kHz PWM, external FET |
MAX1865 |
|
| Step-Down, multi-output |
24V |
5.15V 7V -5V |
0.8A 0.4A 0.08A |
200kHz PWM, external FET |
MAX1865 |
|
| Step-Down, multi-output |
8V to 18V |
3.3V 2.5V 5V |
1A 1A 0.1A |
200kHz PWM, external FET |
MAX1865 |
|
| Step-Down, multi-output |
12V |
3.3V 2.5V 5V |
1.5A 0.13A 0.35A |
200kHz PWM, external FET |
MAX1864 |
|
| Step-Down, multi-output |
5V to 28V |
3.3V 8V 5V 2.5V |
1A 0.05A 0.05A 0.01A |
200kHz PWM, external FET |
MAX1864 |
|
| Step-Down |
5V |
1.25V |
6A |
200kHz PWM, external FET, DDR termination supply sources and sinks current |
MAX1864 |
|
| Step-Down |
12V |
1.0V to 5.5V |
12A |
200kHz PWM, external FETs, digitally adjustable |
MAX1864 |
|
| Step-Down |
3.3V |
1.5V |
6A |
1MHz PWM, external FET |
MAX1953 |
|
| Step-Down |
12V |
2.5V |
20A |
200kHz PWM, external FET, DDR VDDQ |
MAX1916 |
|
| Step-Down |
2.5V |
1.25V |
7A |
550kHz PWM, external FET |
MAX1917 |
|
| Step-Down |
2.5V or 1.5V |
1.25V or 0.75V |
3.5A |
550kHz PWM, external FET, DDR VTT |
MAX1917 |
|
| Step-Down |
22V |
1.25V |
1.5A |
550kHz PWM, external FET, DDR VTT |
MAX1917 |
|
| Step-Down |
12V |
5V |
10A |
200kHz PWM, external FET |
MAX1917 |
|
| Step-Down |
3.3V |
1.8V |
6A |
1MHz PWM, external FET |
MAX1953 |
|
| Step-Down |
3.3V |
1V |
1.5A |
1MHz PWM, external FET |
MAX1953 |
|
| Step-Down |
3.3V |
1.8V |
0.8A |
1MHz PWM, external FET |
MAX1953 |
|
| Step-Down |
5V |
2.5V |
3A |
1MHz PWM, external FET |
MAX1953 |
|
| Step-Down |
5V |
2.5V |
10A |
1MHz PWM, external FET |
MAX1953 |
|
| Step-Down |
5V |
3.3V |
4A |
1MHz PWM, external FET |
MAX1953 |
|
| Step-Down |
5V |
3.3V |
10A |
1MHz PWM, external FET |
MAX1953 |
|
| Step-Down |
3.3V |
1.8V |
3A |
100kHz PWM, external FET, low cost components |
MAX1966 |
|
| Step-Down |
3.3V |
2.5V |
10A |
100kHz PWM, external FET, low cost components |
MAX1966 |
|
| Step-Down |
5V |
2.5V |
0.5A |
100kHz PWM, external FET, low cost components |
MAX1966 |
|
| Step-Down |
5V |
3.3V |
8A |
100kHz PWM, external FET, low cost components |
MAX1966 |
|
| Step-Down |
12V |
2.5V |
5A |
100kHz PWM, external FET, low cost components |
MAX1967 |
|
| Step-Down |
12V |
3.3V |
0.75A |
100kHz PWM, external FET, low cost components |
MAX1967 |
|
| Step-Down |
12.6V to 15.4V |
3.3V |
2A |
100kHz PWM, external FET, low cost components |
MAX1967 |
|
| Step-Down |
3.3V |
1.25V |
12A |
550kHz PWM, external FET, DDR termination |
MAX1917 |
|
| Inverting |
15V |
-200V |
0.03A |
500kHz PWM, external FET, transformer, MEMS supply |
MAX1856 |
|
| Inverting, multi-output |
12V |
-80V -24V |
0.25A 0.12A |
500kHz PWM, external FET, transformer, SLIC supply |
MAX1856 |
|
| Inverting |
15V |
-15V |
0.25A |
300kHz PWM, external FET |
MAX1846 |
|
| Inverting |
12V |
-5V |
1A |
300kHz PWM, external FET |
MAX1846 |
|
| Step-Down |
12V |
5V |
0.3A |
external FET |
MAX1744 |
|
| Inverting |
12V |
-5V |
0.4A |
250kHz PWM, external FET, boost with inverting charge pump |
MAX1856 |
|
| Inverting, multi-output |
10V to 25V |
-62V -25.5V +38V |
0.09A 0.08A 0.09A |
250kHz PWM, external FET, transformer |
MAX1856 |
|
| Step-Down |
3.3V |
1.2V |
1A |
1.4MHz PWM, internal FET |
MAX1974 |
|
| Inverting |
3V to 6V |
-12V |
0.6A |
300kHz PWM, external FET |
MAX1847 |
|
| Inverting |
15V |
-180V |
0.005A |
300kHz PWM, external FET, transformer |
MAX1847 |
|
| Inverting |
7.5V to 13.5V |
-5V |
0.5A |
300kHz PWM, external FET |
MAX1847 |
|
| Inverting |
11V to 14V |
-64V |
0.35A |
500kHz PWM, external FET, transformer |
MAX1856 |
|
| Inverting, multi-output |
5V |
-24V -100V |
0.12A 0.075A |
500kHz PWM, external FET, transformer, SLIC supply |
MAX1856 |
|
| Step-Down |
6.5V to 24V |
1.5V |
30A |
500kHz PWM, external FET, dual-phase, AMP Athlon XP Mobile power |
MAX1939 |
|
| Step-Down, multi-output |
10.8V to 13.2V |
1.8V 3.3V |
0.8A 1.1A |
1.2MHz PWM, external FET, dual out of phase, ceramic capacitors |
MAX8529 |
|
| Step-Down |
5V |
0.9V to 1.8V |
1.8A |
300kHz PWM, external FET, XENPAK APS Compliant |
MAX1954 |
|
| Step-Down |
12V |
6V |
3A |
300kHz PWM, external FET |
MAX8546 |
|
| Inverting |
12V |
-12V |
0.5A |
300kHz PWM, external FET |
MAX1847 |
|
| Step-Down |
5V |
1V or 1.2V |
6A |
300kHz PWM, external FET, digital select of 1V or 1.2V |
MAX1954 |
|
| Step-Down |
12V |
3.3V |
6A |
300kHz PWM, external FET, 92% efficiency |
MAX1954 |
|
| Step-Down |
3.3V |
1.8V |
5A |
300kHz PWM, external FET, 92% efficiency |
MAX1954 |
|
| Step-Down |
5V |
2.5V |
4A |
300kHz PWM, external FET, 92% efficiency |
MAX1954 |
|
| Step-Down |
5V |
3.3V |
4A |
1MHz PWM, external FET, 91% efficiency |
MAX1953 |
|
| Step-Down |
3V to 5.5V |
1.5V |
2A |
1MHz PWM, external FET, ceramic capacitors |
MAX1953 |
|
| Step-Down |
8V to 20V |
2.5V |
10A |
300kHz PWM, external FET |
MAX8546 |
|
| Step-Down |
12V to 20V |
5V |
6A |
300kHz PWM, external FET, 93% efficiency |
MAX8546 |
|
| Step-Down, multi-output |
6V |
1.8V 2.5V |
3A 3A |
1.2MHz PWM, external FET, dual out of phase, ceramic capacitors |
MAX8529 |
|
| Step-Down |
12V |
3.3V |
6A |
400kHz PWM, external FET, 94% efficiency |
MAX8554 |
|
| Step-Down |
12V |
2.5V |
6A |
400kHz PWM, external FET, 93% efficiency |
MAX8554 |
|
| Step-Down |
11V to 23V |
3.7V |
1.5A |
300kHz PWM, external FET, 93% efficiency |
MAX8546 |
|
| Step-Down, multi-output |
2.7V to 5.5V |
1.8V 2.5V |
0.4A 0.1A |
750kHz PWM, internal FET |
MAX1692 |
|
| Step-Down, multi-output |
2.7V to 5.5V |
1.8V 2.5V |
0.4A 0.1A |
750kHz PWM, internal FET |
MAX1692 |
|
| Step-Down, multi-output |
5V |
3.1V 5V 12V |
0.4A 0.1A 0.03A |
200kHz PWM, external FET |
MAX1864 |
|
| Step-Down, multi-output |
10V to 14V |
3.3V 5V |
7A 0.15A |
200kHz PWM, external FET |
MAX1864 |
|
| Step-Down |
12V |
1.8V |
20A |
300kHz PWM, external FET |
MAX1954 |
|
| Step-Down |
5V |
3.18V |
0.32A |
750kHz PWM, internal FET, USB input |
MAX1692 |
|
| Inverting |
3.3V |
-5.2V |
1A |
600kHz PWM, Internal FET, uses step-down IC as inverter |
MAX1685 |
|
| Step-Up/Down |
2.7V to 5.5V |
3.8V |
0.8A |
300kHz PWM, internal FET, single inductor, buck-boost |
MAX1701 |
|
| Step-Up |
3.3V to 5.5V |
12V |
2.3A |
250kHz PWM, external FET |
MAX668 |
|
| Step-Down, multi-output |
9V to 12V |
6V 1.5V |
1.5A 3A |
600kHz PWM, external FET, dual out of phase |
MAX8538 |
|
| Step-Down, multi-output |
7V to 20V |
1.8V 3.3V |
3A 2A |
1.2MHz PWM, external FET, dual out of phase |
MAX8538 |
|
| Step-Down, multi-output |
9V to 12V |
3.4V 2.6V |
1.75A 3A |
1MHz PWM, external FET |
MAX8538 |
|
| Step-Down |
3.3V |
1.2V |
3A |
1MHz PWM, external FET |
MAX1953 |
|
| Step-Down |
3V to 3.6V |
1.5V |
9A |
1MHz PWM, external FET |
MAX1953 |
|
| Step-Down |
5V |
1.2V |
2.1A |
1MHz PWM, external FET |
MAX1953 |
|
| Step-Up |
11V to 14.3V |
16V |
4.4A |
250kHz PWM, external FET, 93% efficient |
MAX668 |
|
| Step-Up/Down |
2.5V to 6V |
3.3V |
1.5A |
250kHz PWM, external FET, SEPIC |
MAX669 |
|
| Inverting, multi-output |
5V |
-24V -72V +3.3V |
0.1A 0.025A 0.1A |
100kHz PWM, external FET, transformer, isolated SLIC |
MAX668 |
|
| Step-Down |
5V |
1.5V |
4A |
1MHz PWM, external FET |
MAX1953 |
|
| Step-Down |
3V to 3.6V |
1.5V |
2A |
1MHz PWM, external FET |
MAX1953 |
|
| Step-Down |
3.3V |
1.8V |
4A |
1MHz PWM, external FET |
MAX1953 |
|
| Inverting |
5V |
-5.2V |
0.5A |
300kHz PWM, external FET |
MAX1846 |
|
| Inverting |
5V |
-12V |
0.2A |
500kHz PWM, external FET |
MAX1846 |
|
| Inverting |
15V |
-150V |
0.05A |
300kHz PWM, external FET, transformer |
MAX1847 |
|
| Inverting |
12V |
-80V |
0.12A |
300kHz PWM, external FET, transformer |
MAX1856 |
|
| Inverting, multi-output |
5V |
-80V -24V |
0.12A 0.06A |
500kHz PWM, external FET, transformer |
MAX1856 |
|
| Inverting, multi-output |
12V |
-80V -53V -26V |
0.1A 0.12A 0.12A |
250kHz PWM, external FET, transformer |
MAX1856 |
|
| Step-Up |
-48V |
5V |
4A |
200kHz PWM, external FET, no transformer, unisolated |
MAX668 |
|
| Inverting |
-48V |
-60V |
0.1A |
200kHz PWM, external FET, transformer |
MAX668 |
|
| Step-Up |
12V |
18.75V |
3.1A |
500kHz PWM, external FET |
MAX668 |
|
| Step-Up/Down |
8V to 20V |
12V |
2.5A |
500kHz PWM, external FET, SEPIC |
MAX668 |
|
| Step-Up, multi-output |
-18V to -24V |
+5V +3.3V -6V -24V -85V |
0.35A 0.15A 0.006A 0.03A 0.001A |
300kHz PWM, external FET, no transformer |
MAX668,MAX8867 |
|
| Step-Up, multi-output |
-18V to -24V |
+5V +3.3V -6V -24V -85V |
0.35A 0.15A 0.006A 0.03A 0.001A |
300kHz PWM, external FET, no transformer |
MAX668,MAX8867 |
|
| Step-Down |
12V |
3.3V |
2.5A |
1MHz PWM, external FET |
MAX8543 |
|
| Step-Down |
3V to 5.5V |
1.8V |
5A |
1MHz PWM, external FET |
MAX1953 |
|
| Inverting |
12V |
-0.7V |
2A |
300kHz PWM, external FET |
MAX1847 |
|
| Inverting |
5V |
-5.2V |
0.5A |
300kHz PWM, external FET |
MAX1846 |
|
| Step-Down, multi-output |
12V |
1.25V 1.25V |
8A 8A |
700kHz PWM, external FETs, dual out of phase |
MAX8538 |
|
| Step-Down |
3.3V |
1.8V |
2A |
1MHz PWM, external FET |
MAX1953 |
|
| Step-Down |
3.0V to 5.5V |
1.8V |
3A |
1MHz PWM, external FET |
MAX1953 |
|
| Step-Down |
3V to 5.5V |
1.8V |
3A |
1MHz PWM, external FET |
MAX1953 |
|
| Step-Down |
3.3V |
1.8V |
2A |
1MHz PWM, external FET |
MAX1953 |
|
| Step-Down |
12V |
1.8V |
25A |
300kHz PWM, external FET |
MAX1954 |
|
| Step-Down |
3V to 5.5V |
1.05V |
3.5A |
300kHz PWM, external FET |
MAX1954 |
|
| Step-Down |
7V to 13.2V |
1.9V |
2.5A |
300kHz PWM, external FET |
MAX1954 |
|
| Step-Down |
5V |
1.2V |
3.5A |
300kHz PWM, external FET |
MAX1954 |
|
| Step-Down |
5V |
1.5V |
4A |
300kHz PWM, external FET |
MAX1954 |
|
| Step-Down |
3.3V |
1.8V |
10A |
300kHz PWM, external FET |
MAX1954 |
|
| Step-Down |
3.3V |
1.2V |
7A |
300kHz PWM, external FET |
MAX1954A |
|
| Step-Down |
3V to 5.5V |
1.5V |
2A |
300kHz PWM, external FET |
MAX1954A |
|
| Step-Down |
5V |
1.8V |
6.5A |
300kHz PWM, external FET |
MAX1954 |
|
| Step-Down |
5V |
1.2V |
6A |
300kHz PWM, external FET |
MAX1954A |
|
| Step-Down |
18V to 24V |
12V |
2A |
300kHz PWM, external FET |
MAX8546 |
|
| Step-Down |
18V to 20V |
12V |
4A |
300kHz PWM, external FET |
MAX8546 |
|
| Step-Down |
19V |
5V |
6A |
300kHz PWM, external FET |
MAX8546 |
|
| Step-Down |
12V |
5V |
5A |
300kHz PWM, external FET |
MAX8546 |
|
| Step-Down |
8V to 22V |
3.3V |
1.2A |
300kHz PWM, external FET |
MAX8546 |
|
| Step-Down |
12V |
3.3V |
4A |
300kHz PWM, external FET |
MAX8546 |
|
| Step-Down |
9V to 20V |
2.5V |
6A |
300kHz PWM, external FET |
MAX8546 |
|
| Step-Down |
12V |
1.5V |
5A |
300kHz PWM, external FET |
MAX8546 |
|
| Step-Down |
3V to 5.5V |
1.2V |
6A |
300kHz PWM, external FET |
MAX8546 |
|
| Step-Down |
5V |
1.8V |
10A |
300kHz PWM, external FET |
MAX8546 |
|
| Step-Down |
12V to 20V |
1.5V |
4A |
300kHz PWM, external FET |
MAX8546 |
|
| Step-Down |
12V to 20V |
1.2V |
4A |
300kHz PWM, external FET |
MAX8546 |
|
| Step-Down |
5.5V to 24V |
0.9V |
3A |
300kHz PWM, external FET |
MAX8546 |
|
| Step-Down |
3V to 5.5V |
0.9V |
3A |
300kHz PWM, external FET |
MAX8546 |
|
| Off-Line |
120VAC |
28V |
0.7A |
200kHz PWM, external FET, drives 4 Luxeon high brightness LEDs |
MAX1847 |
|
| Step-Down, multi-output |
6V and 3.3V |
1.24V 2.5V 1.8V 1.5V |
3A 1.4A 0.17A 0.14A |
200kHz PWM, external FET, 1 DC-DC plus 3 LDOs |
MAX1965 |
|
| Linear Regulator, multi-output |
3.3V, 6.5V and 12V |
5V 2.5V |
0.7A 0.735A |
external FET, dual linear reglator, for Thomson Jupiter chip set |
MAX8564 |
|
| Step-Down |
12V |
5V to 12V |
2.5A |
1MHz PWM, external FET, PWM voltage adjust, Fan Speed Control |
MAX8597 |
|
| Step-Down, multi-output |
6V to 14V |
3.3V 1.8V 5V -48V |
0.35A 0.35A 0.35A 0.1A |
200kHz PWM, external FET, transformer |
MAX1865 |
|
| Step-Down |
5V |
2.5V |
1.5A |
1MHz PWM, external FET |
MAX1953 |
|
| Step-Down |
5V |
3.3V |
2.2A |
1MHz PWM, external FET |
MAX1953 |
|
| Step-Down |
5V |
1.05V |
3A |
300kHz PWM, external FET |
MAX8578 |
|
| Step-Down |
9V to 19V |
1.0V/1.2V |
4.5A |
100kHz PWM, external FET, dynamic voltage shift |
MAX8578 |
|
| Step-Down |
12V |
1.2V |
8.5A |
500kHz PWM, external FET |
MAX8544 |
|
| Step-Down |
12V |
1.8V |
7.2A |
500kHz PWM, external FET |
MAX8544 |
|
| Step-Down |
10V to 20V |
1.05V |
4.5A |
100kHz PWM, external FET |
MAX8576 |
|
| Battery Charger |
18.5V to 28V |
2, 3 or 4 Li+ cells |
5A |
300kHz PWM, external FET |
MAX1873 |
|
| Step-Up |
13.5V to 26.4V |
48V |
0.2A |
500kHz PWM, external FET |
MAX668 |
|
|