LT1610
The
q
denotes specifications which apply over the specified temperature
range, otherwise specifications are at T
A
= 25°C. Commercial grade 0°C to 70°C, V
IN
= 1.5V, V
SHDN
= V
IN
, unless otherwise noted.
(Note 2)
PARAMETER
Switch Current Limit
Switch V
CESAT
Switch Leakage Current
SHDN Input Voltage High
SHDN Input Voltage Low
SHDN Pin Bias Current
V
SHDN
= 3V
V
SHDN
= 0V
10
0.01
CONDITIONS
(Note 3)
I
SW
= 300mA
q
ELECTRICAL CHARACTERISTICS
MIN
450
TYP
600
300
0.01
MAX
900
350
400
1
0.3
0.1
UNITS
mA
mV
mV
µA
V
V
µA
µA
V
SW
= 5V
1
The
q
denotes specifications which apply over the specified temperature range, otherwise specifications are at T
A
= 25°C.
Industrial grade – 40°C to 85°C, V
IN
= 1.5V, V
SHDN
= V
IN
, unless otherwise noted.
PARAMETER
Minimum Operating Voltage
Maximum Operating Voltage
Feedback Voltage
Quiescent Current
Quiescent Current in Shutdown
FB Pin Bias Current
Reference Line Regulation
Error Amp Transconductance
Error Amp Voltage Gain
Switching Frequency
Maximum Duty Cycle
Switch Current Limit
Switch V
CESAT
Switch Leakage Current
SHDN Input Voltage High
SHDN Input Voltage Low
SHDN Pin Bias Current
V
SHDN
= 3V
V
SHDN
= 0V
10
0.01
I
SW
= 300mA
q
q
CONDITIONS
T
A
= 85°C
T
A
= – 40°C
MIN
TYP
0.9
MAX
1
1.25
8
1.26
60
0.5
1.0
80
0.15
0.2
UNITS
V
V
V
V
µA
µA
µA
nA
%/V
%/V
µmhos
V/V
1.20
1.23
30
0.01
0.01
V
SHDN
= 0V, V
IN
= 2V
V
SHDN
= 0V, V
IN
= 5V
q
27
0.03
25
100
2V
≤
V
IN
≤
8V (– 40°C)
2V
≤
V
IN
≤
8V (85°C)
∆I
= 2µA
(Note 4)
(Note 4)
q
q
1.4
77
75
450
1.7
80
600
300
0.01
2
95
95
900
350
400
1
0.3
0.1
MHz
%
%
mA
mV
mV
µA
V
V
µA
µA
V
SW
= 5V
1
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
The LT1610C is guaranteed to meet specified performance from
0°C to 70°C and is designed, characterized and expected to meet these
extended temperature limits, but is not tested at – 40°C and 85°C. The
LT1610I is guaranteed to meet the extended temperature limits.
Note 3:
Current limit guaranteed by design and/or correlation to static test.
Current limit is affected by duty cycle due to ramp generator. See Block
Diagram.
Note 4:
Not 100% tested at 85°C.
3
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