LTC1266 Linear Technology, LTC1266 Datasheet - Page 3

• Manufacturer Part Number: LTC1266
• Description: Synchronous Regulator Controller for N- or P-Channel MOSFETs
• Manufacturer: Linear Technology

– 40 C < T
SYMBOL PARAMETER
V
V
I
I
ELECTRICAL C
SYMBOL PARAMETER
V
V
I
I
V
I
I
t
t
t
V
V
I
I
I
Q1
Q2
SHDN
PINV
BINH
CT
OFF
MAX
r
LBLEAK
LBSINK
LBIN
, t
FB
OUT
SENSE 2
SHDN
BINH
CLAMP
LBTRIP
f
A
Current Sense Threshold
(Burst Mode Operation Disabled)
Shutdown Pin Threshold
Shutdown Pin Input Current
Phase Invert Pin Input Current
Burst Mode Operation
Inhibit Pin Threshold
Burst Mode Operation
Inhibit Pin Input Current
C
Off-Time (Note 3)
Max On-Time
Driver Output Transition Times
Output Voltage Clamp in
Burst Mode Operation Inhibit
Low-Battery Trip Point
Max Leakage Current into Pin 14
Max Sink Current into Pin 14
Max Leakage Current into Pin 13
Feedback Voltage (LTC1266 only)
Regulated Output Voltage
V
PWR V
LTC1266-5
LTC1266
LTC1266-3.3
T
LTC1266
LTC1266-3.3
LTC1266-5
< 85 C (Note 4), V
LTC1266-3.3
LTC1266-5
IN
Normal Mode
Sleep Mode
Shutdown
Normal Mode
Sleep Mode
Shutdown
Pin Discharge Current
Pin DC Supply Current (Note 2)
IN
DC Supply Current (Note 2)
HARA TERISTICS
IN
= 10V, unless otherwise noted.
C
CONDITIONS
V
V
3.5V < V
3.5V < V
V
3.5V < PWR V
V
CONDITIONS
V
0V < V
0V < V
0V < V
V
V
C
V
C
V
V
V
V
V
V
3.5V < PWR V
IN
IN
SHUTDOWN
SHUTDOWN
BINH
SENSE +
OUT
T
OUT
L
BINH
IN
IN
LBOUT
LBOUT
LBIN
V
V
V
V
V
V
Measured at V
Measured at V
Measured at V
SENSE –
SENSE –
SENSE –
SENSE –
SENSE –
SENSE –
= 390pF, I
= 3000pF (Pins 1, 16), V
= 9V, I
= 9V, I
= 5V
= 12V
= 0V
= 0V, V
= 18V
= 2.1V
= 2.1V
SHDN
PINV
BINH
= 18V, V
= 1V, V
IN
IN
= V
LOAD
LOAD
= 3.3V, V
= 3.3V, V
= V
= V
= V
= V
< 18V
< 18V
< 18V, V
< 18V, V
= 2.1V, 3.5V < V
= 2.1V, 3.5V < PWR V
< 8V, V
OUT
IN
LOAD
OUT
OUT
OUT
OUT
IN
IN
LBIN
= 18V
T
= 700mA
= 700mA
FB
SENSE –
SENSE –
LBIN
– 100mV, V
< 18V
< 18V
A
+ 100mV (Forced)
– 100mV (Forced)
+ 100mV (Forced)
– 100mV (Forced)
= 700mA
= 25 C, V
IN
= 0V, 2.5V < V
FB
FB
IN
IN
= 2V
= 16V
= V
= V
= 18V
= 18V
OUT
OUT
IN
SENSE –
IN
/2.64 + 25mV (Forced)
/2.64 – 25mV (Forced)
IN
= 6V
< 18V
= 10V, V
IN
IN
= V
< 18V
< 18V
OUT
SHDN
– 300mV
LTC1266-3.3/LTC1266-5
= V
BINH
= 0V unless otherwise noted.
MIN
1.14
1.17
MIN
1.21
3.23
4.90
135
135
135
0.6
0.8
50
4
1
1.30
3.43
5.20
1.25
1.30
1.25
3.33
5.05
TYP
– 20
– 20
– 20
TYP
155
155
155
100
170
0.8
1.2
0.2
1.2
0.2
0.2
2.1
70
60
25
25
20
2
5
8
1
1
LTC1266
MAX
MAX
1.35
1.42
1.29
3.43
5.20
260
175
175
175
200
200
3.3
90
10
60
50
2
5
1
2
1
6
1
7
7
UNITS
UNITS
3
mV
mV
mV
mV
mV
mV
mA
mA
nA
ns
V
A
A
V
A
A
A
V
V
V
V
V
A
V
V
V
A
A
A
A
A
s
s