Datasheet

LT1336
4
1336fa
Typical perForMance characTerisTics
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: T
J
is calculated from the ambient temperature T
A
and power
dissipation P
D
according to the following formulas:
LT1336CN/LT1336IN: T
J
= T
A
+ (P
D
)(70°C/W)
LT1336CS/LT1336IS: T
J
= T
A
+ (P
D
)(110°C/W)
Note 3: Dynamic supply current is higher due to the gate charge
being delivered at the switching frequency. See Typical Performance
Characteristics and Applications Information sections.
Note 4: Pins 1 and 16 connected to each end of the inductor. Booster is
free running.
Note 5: See Timing Diagram. Gate rise times are measured from 2V to 10V
and fall times are measured from 10V to 2V. Delay times are measured
from the input transition to when the gate voltage has risen to 2V or
decreased to 10V.
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. Test Circuit, V
+
= V
BOOST
= 12V, V
TSOURCE
= 0V and Pins 1, 16 open. Gate
Feedback pins connected to Gate Drive pins unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
t
D3
Top Gate Lockout Delay V
INBOTTOM
(+) Transition, V
INTOP
= 2V,
Measured at V
TGATE DR
– V
TSOURCE
(Note 5)
l
300 600 ns
Bottom Gate Lockout Delay V
INTOP
(+) Transition, V
INBOTTOM
= 2V,
Measured at V
BGATE DR
(Note 5)
l
250 500 ns
t
D4
Top Gate Release Delay V
INBOTTOM
(–) Transition, V
INTOP
= 2V,
Measured at V
TGATE DR
– V
TSOURCE
(Note 5)
l
250 500 ns
Bottom Gate Release Delay V
INTOP
(–) Transition, V
INBOTTOM
= 2V,
Measured at V
BGATE DR
(Note 5)
l
200 400 ns
DC Supply Current
vs Supply Voltage
DC Supply Current
vs Top Source Voltage
DC Supply Current
vs Temperature
SUPPLY VOLTAGE (V)
4
SUPPLY CURRENT (mA)
16
22
20
18
16
14
12
10
8
6
1336 G01
86 10 12 14 2018
BOTH INPUTS
HIGH OR LOW
V
TSOURCE
= 0V
V
INTOP
= HIGH
V
INBOTTOM
= LOW
V
INTOP
= LOW
V
INBOTTOM
= HIGH
TEMPERATURE (C)
–50
SUPPLY CURRENT (mA)
100
18
17
16
15
14
13
12
11
10
9
1336 G02
0–25 25 50 75 125
BOTH INPUTS
HIGH OR LOW
V
INTOP
= HIGH
V
INBOTTOM
= LOW
V
+
= 12V
V
TSOURCE
= 0V
V
INTOP
= LOW
V
INBOTTOM
= HIGH
TOP SOURCE VOLTAGE (V)
0
SUPPLY CURRENT (mA)
30
34
31
28
25
22
19
16
13
10
1336 G18
105 15 20 25 4035
BOTH INPUTS
HIGH OR LOW
V
+
= 12V
V
INTOP
= HIGH
V
INBOTTOM
= LOW
V
INTOP
= LOW
V
INBOTTOM
= HIGH