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?2011 Exar Corporation
3/29
Rev. 1.1.6
Low Drop-out Regulator
Parameter
Min.
Typ.
Max.
Units
 
Conditions
LDOOUT Output Voltage
LDO=LOW
3.15
3.3
3.45
V
"
4.75VdVIN1d25V
0mA
LDOOUT
<100mA
LDOOUT Output Voltage
LDO=HIGH
4.75
5.0
5.25
V
"
6.3dVIN1d25V
0mA
LDOOUT
<100mA
LDOOUT Short Circuit Current
Limit
110
 
220
mA
"   V
LDOOUT
=0V
Auxiliary ADCs
Parameter
Min.
Typ.
Max.
Units
 
Conditions
Linearity Error Integral
 
2
LSB
    
Linearity Error Differential
-1
 
1
LSB
    
Input Dynamic Range VIN1
4.8
 
25
V
"
 
Input Dynamic Range VIN2
4.8
 
25
V
"
 
Isense ADC
Parameter
Min.
Typ.
Max.
Units
 
Conditions
ADC LSB
 
5
 
mV
    Referred to the input
Input Dynamic Range
 
-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
-1
 
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
%
"   
Maximum Duty Cycle
2
 
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.
 
 
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