SC4626 datasheet(19/21 Pages) SEMTECH

Il numero della parte	SC4626

Spiegazioni elettronici	2.5MHz, 1A Synchronous Step Down Regulator in SOT23-5

PDF	21 Pages

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Produttore elettronici	SEMTECH [Semtech Corporation]

Homepage	http://www.semtech.com

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SC4626

input and output voltage. The maximum input capacitor

RMS current is found from the equation













−

OUT

RMS

CIN

)

(

The input voltage ripple and RMS current ripple are at

maximum when the input voltage is twice the output

voltage or 50% duty cycle.

The input capacitor provides a low impedance loop for

the edges of pulsed current drawn by the PMOS switch.

Low ESR/ESL X5R ceramic capacitors are recommended

for this function. To minimise stray inductance ,the

capacitor should be placed as closely as possible to the

VIN and GND pins of the SC4626.

Manufacturer

Part Nunber

Value

(μF)

Type

Rated

Voltage

(VDC)

Value

3.3V

(μF)

Dimensions

LxWxH

(mm)

Murata

GRM21BR61A106K

0±0%

X5R

4.42

2.0x.25x.25

(EIA:0805)

Murata

GRM21BR71A106K

0±0%

X7R

4.88

2.0x.25x.25

(EIA:0805)

Murata

GRM21BR60J106K

0±0%

X5R

6.3

4.05

2.0x.25x.25

(EIA:0805)

Murata

GRM21BR70J106K

0±0%

X7R

6.3

4.9

2.0x.25x.25

(EIA:0805)

Murata

GRM21BR60J226M

22±20%

X5R

6.3

6.57

2.0x.25x.25

(EIA:0805)

Table 3 – Recommended Capacitors

Applications Information (continued)

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