SC4626 datasheet(7/21 Pages) SEMTECH

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SC4626

Typical Characteristics (continued)

UVLO Rising Threshold Variation

-1.0%

-0.8%

-0.6%

-0.4%

-0.2%

0.0%

0.2%

0.4%

0.6%

0.8%

1.0%

-40

-15

Ambient Temperature (°C)

IOUT= 0A

UVLO Hysteresis Variation

-5%

-4%

-3%

-2%

-1%

-40

-15

Ambient Temperature (°C)

IOUT= 0A

UVLO Hysteresis Variation

Dropout Voltage in 100% Duty Cycle Operation

Load Regulation (V

OUT=1.5V)

Load Regulation (V

OUT=3.3V)

Circuit Conditions: V

OUT=.0V (SC4626A), .5V (SC4626H) & 3.3V (SC4626Z);CIN= 0uF/6.3V;COUT= 0uF/6.3V for L=2.2uH;COUT= 22uF/6.3V for L=uH.

Unless otherwise noted, L= 2.2uH (TOKO: 07AS-2R2M).

Load Regulation

-1.0%

-0.8%

-0.6%

-0.4%

-0.2%

0.0%

0.2%

0.4%

0.6%

0.8%

1.0%

0.0

0.2

0.4

0.6

0.8

1.0

Output Current (A)

VIN= 5.0V

VIN= 3.3V

VOUT= 1.50V

TA=25°C

Load Regulation

-1.0%

-0.8%

-0.6%

-0.4%

-0.2%

0.0%

0.2%

0.4%

0.6%

0.8%

1.0%

0.0

0.2

0.4

0.6

0.8

1.0

Output Current (A)

VIN= 5.0V

VIN= 4.0V

VOUT= 3.30V

TA=25°C

Dropout Voltage of 100% Duty Cycle Operation

100

150

200

250

300

350

400

0.0

0.2

0.4

0.6

0.8

1.0

Output Current (A)

TA= 25°C

L= MDT2520-CR1R0M

(DCR= 60m

_typ)

L= 1071AS-2R2N

(DCR=50m

_typ)

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