SC339 datasheet(12/15 Pages) SEMTECH

Part #	SC339

Description	Ultra Low Output Voltage Linear FET Controller

PDF	15 Pages

Scroll/Zoom	100%

Manufacturer	SEMTECH [Semtech Corporation]

Direct Link	http://www.semtech.com

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SC339

PRELIMINARY

POWER MANAGEMENT

Performance Characteristics

Supply Current vs. Supply Voltage

VCC = 4.5V to 5.5V, IOUT = 2.5A, VIN = 1.5V, VEN = 5V

125.0E-6

130.0E-6

135.0E-6

140.0E-6

145.0E-6

150.0E-6

155.0E-6

160.0E-6

4.500

4.600

4.700

4.800

4.900

5.000

5.100

5.200

5.300

5.400

5.500

VCC (V)

Supply Current

Figure 1: Supply Current v/s Supply Voltage

Adjust Voltage vs. Output Current

IOUT = 0A to 3A, VIN = 1.5V, VCC = 5.0V, VEN = 5V

0.4940

0.4960

0.4980

0.5000

0.5020

0.5040

0.5060

0.000

0.500

1.000

1.500

2.000

2.500

3.000

IOUT (A)

Adjust Voltage

+1%

-1%

Figure 2: Adjust Voltage v/s Output Current (1% accurate)

Figure 3: Soft Start waveform shows the PWRGD delay

Figure 4: Input UVLO Test (Rising)

Figure 5: Input UVLO Test (Falling)

Figure 6: Enable threshold detect (Rising)

SC339 Datasheet(PDF) 12 Page - Semtech Corporation

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