X

3

T

© 2010 Exar Corporation

3/29

Rev. 1.1.1

Low Drop-out Regulator

Parameter

Min.

Typ.

Max.

Units

Conditions

LDOOUT Output Voltage

LDO=LOW

3.15

3.3

3.45

V

• 4.75V≤VIN≤25V

LDOOUT Output Voltage

LDO=HIGH

4.75

5.0

5.25

V

• 6.3≤VIN≤25V

LDOOUT Short Circuit Current

Limit

110

220

mA

Auxiliary ADCs

Parameter

Min.

Typ.

Max.

Units

Conditions

Linearity Error Integral

2

LSB

Linearity Error Differential

-1

1

LSB

Input Dynamic Range VIN

4.8

25

V

•

Isense ADC

Parameter

Min.

Typ.

Max.

Units

Conditions

ADC LSB

5

mV

Referred to the input

Input Dynamic Range

0

-320

mV

PWM Generators and Oscillator

Parameter

Min.

Typ.

Max.

Units

Conditions

Output frequency range

300

1500

kHz

Steps defined in the table in the PWM

Switching Frequency Setting section

below

Output Frequency Accuracy

-10

10

%

•

Channel-to-channel phase shift

90

deg

Minimum On Time

40

ns

1nF of gate capacitance

Dead Time Adjustment Step

13

ns

Switching frequency = 300kHz

10% to 90% duty cycle, Frequency

dependant; refer to the graph in

performance characteristic section

1.5

ns

Switching frequency = 1.5MHz

10% to 90% duty cycle, Frequency

dependant; refer to the graph in

performance characteristic section

CLOCK IN Synchronization

Range

-5

5

%

•

86

%

• Switching frequency = 300kHz

78

%

• Switching frequency = 1.5MHz

Note 2: The maximum duty cycle represents the maximum duty cycle commanded by the DPWM, is guaranteed by design,

and internally set to ensure proper sampling of the current during the off-time.