Datasheet

3
LT1316
E
LECTR
IC
AL C CHARA TERIST
ICS
Commercial grade 0°C to 70°C, Industrial grade –40°C to 85°C, V
IN
= 2V, V
SHDN
= V
IN
, T
A
= 25°C unless otherwise noted. (Notes 1, 2)
Load Transient Response Burst Mode
TM
Operation
V
OUT
100mV/DIV
AC COUPLED
V
OUT
100mV/DIV
AC COUPLED
V
SW
5V/DIV
INDUCTOR
CURRENT
200mA/DIV
1316 G01
1316 G02
Burst Mode IS A TRADEMARK OF LINEAR TECHNOLOGY
CORPORATION.
Commercial grade 0°C to 70°C, V
IN
= 2V, V
SHDN
= V
IN
, T
A
= 25°C unless otherwise noted.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Switch OFF Time FB > 1V 1.4 2.0 2.6 µs
● 1.1 3.0 µs
FB < 1V 3.4 µs
Switch ON Time Current Limit Not Asserted 4.4 6.3 8.2 µs
1V < FB < 1.2V
● 3.4 9.5 µs
Maximum Duty Cycle Current Limit Not Asserted 74 76 90 %
1V < FB < 1.2V
● 73 90 %
Switch Saturation Voltage I
SW
= 0.5A ● 0.30 0.4 V
I
SW
= 0.1A ● 0.06 0.15 V
Switch Leakage Switch Off, V
SW
= 5V ● 0.1 5 µA
FB Comparator Trip Point ● 1.21 1.23 1.25 V
Peak Switch Current R
SET
= 27.4k, T
A
= 25°C 90 100 110 mA
R
SET
= 27.4k, T
A
=0°C 90 100 115 mA
R
SET
= 27.4k, T
A
= 70°C 70 90 110 mA
R
SET
= 10K ● 250 290 340 mA
R
SET
= 121k 25 mA
FB Comparator Trip Point ● 1.205 1.23 1.255 V
Peak Switch Current R
SET
= 27.4k, ● 70 100 125 mA
R
SET
= 10k ● 200 290 370 mA
Industrial grade –40°C to 85°C, V
IN
= 2V, V
SHDN
= V
IN
, T
A
= 25°C unless otherwise noted.
over the –40°C to 85°C temperature range by design or correlation, but
are not production tested.
Note 2: I grade device specifications are guaranteed over the –40°C to
85°C temperature range.
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
0mA
50mA
I
LOAD
The ● denotes specifications which apply over the specified temperature
range.
Note 1: C grade device specifications are guaranteed over the 0°C to 70°C
temperature range. In addition, C grade device specifications are assured