LM27403 datasheet(9/49 Pages) TI

Part #	LM27403

Description	Synchronous Buck Controller with Temperature-Compensated, Inductor-DCR-Based Overcurrent Protection and Programmable Thermal Shutdown

PDF	49 Pages

Scroll/Zoom	100%

Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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9 / 49 page

1.19

1.195

1.2

1.205

1.21

-50

-25

100

125

Temperature (

SC)

C005

3.5

3.6

3.7

3.8

3.9

-50

-25

100

125

Temperature (

SC)

C006

1.19

1.195

1.2

1.205

1.21

Output Current (A)

C003

1.19

1.195

1.2

1.205

1.21

Input Voltage (V)

C005

100

Output Current (A)

VIN = 3.3V

VIN = 5V

VIN = 12V

VIN = 20V

C001

100

Output Current (A)

VOUT = 0.8V

VOUT = 1.2V

VOUT = 1.8V

VOUT = 3.3V

VOUT = 5.3V

C002

LM27403

www.ti.com

SNVS896 A – AUGUST 2013 – REVISED SEPTEMBER 2013

TYPICAL CHARACTERISTICS

Unless otherwise stated, all datasheet curves were recorded using the circuit and powertrain designated Design 1 in the

DESIGN EXAMPLES section with input and output voltages of 12 V and 1.2 V, respectively.

Figure 2. Efficiency Plot, VOUT = 1.2 V

Figure 3. Efficiency Plot, VIN = 12 V

Figure 4. Load Regulation

Figure 5. Line Regulation

Figure 6. Temperature Regulation

Figure 7. Quiescent Current vs. Temperature, non switching

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