MPM3632C – SYNCHRONOUS, STEP-DOWN MODULE W/ INTEGRATED INDUCTOR

MPM3632C Rev. 1.03

www.MonolithicPower.com

16

9/10/2019

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© 2019 MPS. All Rights Reserved.

APPLICATION INFORMATION

Setting the Output Voltage

The external resistor divider is used to set the

output voltage. Choose the R1 resistance. Then

calculate R2 with Equation (4):

OUT

R1

R2

V

1

0.8V





(4)

The feedback circuit is shown in Figure 6. See

Table 1 for a list of recommended feedback

network

parameters

for

common

output

voltages.

Figure 6: Feedback Network

Table 1: Recommended Parameters for Common Output Voltages

VIN

(V)

VOUT

(V)

R1

(kΩ)

R2

(kΩ)

Small Solution Size (CIN = 10μF,

COUT = 22μF/0805/16V)

Low VOUT Ripple (CIN = 10μF,

COUT = 2*22μF/0805/16V)

VOUT Ripple in

PWM (mV) (8)

VOUT Ripple on

Load Transient

(mV) (9)

VOUT Ripple in

PWM (mV) (8)

VOUT Ripple on

Load Transient

(mV) (9)

18

5

47

8.87

8

80

8

76

16

7.4

74

6.4

73

14

6.8

74

4.6

73

12

6.4

73

4

72

10

5.6

70

3.4

69

8

5

70

3.2

69

6 (9)

22.4

87

3.5

80

18

3.3

47

15

6.8

49

5

49

16

6.8

49

5.2

47

14

6.8

46

5.2

45

12

5.2

45

5

44

10

5

44

4.6

43

8

4.6

42

3.8

42

5 (9)

3.6

46

3.4

46

18

2.5

47

22

7.6

39

3.8

39

16

6.2

37

4.6

36

14

6

36

4.2

35

12

5.5

35

4

34

10

5

34

4

33

8

5.2

33

4

33

5

5.2

34

3.8

32