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AS1322

Datasheet - A p p l i c a t i o n I n f o r m a t i o n

9.2.2

Output Capacitor Selection

ESR and are available in small footprints. A 2.2 to 10µF output capacitor is sufficient for most applications. Larger values up to 22µF may be

used to obtain extremely low output voltage ripple and improve transient response.

An additional phase lead capacitor may be required with output capacitors larger than 10µF to maintain acceptable phase margin. X5R and X7R

dielectric materials are recommended due to their ability to maintain capacitance over wide voltage and temperature ranges.

Ceramic capacitors are recommended for input decoupling and should be located as close to the device as is practical. A 4.7µF input capacitor

is sufficient for most applications. Larger values may be used without limitations.

Note:

Do not use ordinary rectifier diodes, since the slow recovery times will compromise efficiency.

Table 6. Recommended Output Capacitor

Part Number

C

TC Code

Rated Voltage

Dimensions (L/W/T)

Manufacturer

JMK212BJ226MG-T

22µF ±20%

X5R

6.3V

2x1.3x1.3mm

Taiyo Yuden

www.t-yuden.com

Table 7. Recommended Input Capacitor

Part Number

C

TC Code

Rated Voltage

Dimensions (L/W/T)

Manufacturer

GRM31CR70J106KA01L

10µF ±10%

X7R

6.3V

3.2x1.6x1.6mm

Murata

www.murata.com

100

10

76

78

80

82

84

86

88

90

92

Output Current (mA)

10uH - Coi l cr af t (M OS6020-103M L)

10uH - Sumi da(CDRH4D18-100)

6. 8uH - Sumi da(CDRH4D18-6R8)

6. 8uH - Sumi da(CR43-6R8)

4. 7uH - Coi l cr af t (M OS6020-472M L)

4. 7 uH - Sumi da(CDRH4D18-4R7)

3. 3 uH - Coi l cr af t (M OS6020-332M L)

Ser i es 8

40

45

50

55

60

65

70

75

80

85

90

0.1

1

10

Output Current (mA)

10uH - C oi l c r af t (M OS6020-103M L)

10uH - Sumi da(CD RH 4D18-100)

6. 8uH - Sumi da(C D RH 4D18-6R 8)

6. 8uH - Sumi da(C R 43-6R8)

4. 7uH - Coi l c r af t (M OS6020-472M L)

4. 7 uH - Sumi da(CD RH 4D 18-4R7)

3. 3 uH - C oi l c r af t (M OS6020-332M L)