SC1109CSTR datasheet(8/17 Pages) SEMTECH

Part #	SC1109CSTR

Description	SYNCHRONOUS PWM CONTROLLER WITH DUAL LOW DROPOUT REGULATOR CONTROLLERS

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Manufacturer	SEMTECH [Semtech Corporation]

Direct Link	http://www.semtech.com

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SYNCHRONOUS PWM CONTROLLER WITH

DUAL LOW DROPOUT REGULATOR

CONTROLLERS

PRELIMINARY - October 16, 2000

SC1109

8

TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com

SC1109 (VTT) L ine Reg. vs Vin (Iout = 6.0A)

0.000%

0.050%

0.100%

0.150%

0.200%

0.250%

0.300%

0.350%

4.000

4.500

5.000

5.500

6.000

6.500

7.000

Vin (V)

IRL3103R(V1.8,V2.5 No load)

Typical VTT Line Regulation at Iout = 6 Amps

SC1109 (V TT ) L ine Reg. vs V in (Iout = 3.0A)

0.000%

0.020%

0.040%

0.060%

0.080%

0.100%

0.120%

4.700

4.800

4.900

5.000

5.100

5.200

5.300

V in (V)

IRL3103R(V1.8,V2.5 No load)

Typical VTT Line Regulation at Iout = 3 Amps

SC1109 (VTT) Eff. vs Iout (Vin = 5.0V)

0.0%

10.0%

20.0%

30.0%

40.0%

50.0%

60.0%

70.0%

80.0%

90.0%

0.00

2.00

4.00

6.00

8.00

Iout_Vtt (Amps)

IRL3103R(V1.8,V2.5 No load)

Typical VTT Efficiency at Vin=5V

SC1109 (VTT) Load Reg. vs Iout (Vin = 5.0V)

-0.600%

-0.500%

-0.400%

-0.300%

-0.200%

-0.100%

0.000%

0.00

2.00

4.00

6.00

8.00

Iout_Vtt (Amps)

IRL3103R(V1.8,V2.5 No load)

Typical VTT Load Regulation at Vin=5V

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