Data Sheet

LT3073

analog.com

Rev 0.

3 of 37

SPECIFICATIONS

Table 1. Electrical Characteristics

(All typical specifications are at TJ (Junction Temperature) = 25°C and all min and max specifications are across

the entire operating temperature range unless otherwise noted. COUT = 22μF, CREF= 4.7μF, CBIASF = 2.2μF, RMON =

0.8kΩ, unless otherwise noted. )

PARAMETER

SYMBOL

CONDITIONS/COMMENTS

MIN

TYP

MAX

UNITS

IN Pin Voltage

VIN

5.5

V

BIAS Pin Voltage1

VBIAS

2.375

5.5

V

Regulated Output

Voltage

VOUT

VOUT = 0.5V,

50mA ≤ IOUT ≤ 3A, 0.7V ≤ VIN ≤ 0.9V

0.4925 0.500 0.5075

V

VOUT = 1.2V,

10mA ≤ IOUT ≤ 3A, 1.4V ≤ VIN ≤ 1.6V

1.182 1.200 1.218

VOUT = 3.3V,

10mA ≤ IOUT ≤ 3A, 3.5V ≤ VIN ≤ 3.7V

3.2505 3.300 3.3495

VOUT = 4.2V,

10mA ≤ IOUT ≤ 3A, 4.4V ≤ VIN ≤ 4.6V

4.137 4.200 4.263

Regulated Output

Voltage Margining

MARG = VBIAS

2.2

2.5

2.9

%

MARG = GND

-2.9

-2.5

-2.2

Line Regulation to VIN

∆VOUT =

f(∆VIN)

VOUT = 0. 5V, ΔVIN = 0.7V to 5.5V,

VBIAS = 2.375V, IOUT = 50mA

0.5

mV

VOUT = 4.2V, ΔVIN = 4.4V to 5.5V,

VBIAS = 5.5V, IOUT = 10mA

0.6

Line Regulation to VBIAS

∆VOUT =

f(∆VBIAS)

VOUT = 0.5V, ΔVBIAS = 2.375V to 5.5V,

VIN = 0.7V, IOUT = 50mA

0.25

mV

VOUT = 3.3V, ΔVBIAS = 4.5V to 5.5V,

VIN = 3.5V, IOUT = 10mA

2

Load Regulation 1

∆VOUT =

f(∆IOUT)

ΔIOUT = 50mA to

3A

VBIAS = 2.375V, VIN

= 0.7V, VOUT = 0.5V

0.6

mV

∆IOUT = 10mA to

3A

VBIAS = 2.4V, VIN =

1.4V, VOUT = 1.2V

1.2

VBIAS = 4.5V, VIN =

3.5V, VOUT = 3.3V

3.3

VBIAS = 5.4V, VIN =

4.4V, VOUT = 4.2V

4.2

Dropout Voltage 2

VDO

VIN = VOUT(NOMINAL),

VBIAS ≥ VOUT + 1.2V,

IOUT = 1A

TJ = 25°C

15

22

mV

33

VIN = VOUT(NOMINAL),

VBIAS ≥ VOUT + 1.2V,

IOUT = 2A

TJ = 25°C

30

44

66