LTC1266CS Linear Technology, LTC1266CS Datasheet - Page 4

• Manufacturer Part Number: LTC1266CS
• Description: IC REG CNTRLR N/PCH MOSFET16SOIC
• Manufacturer: Linear Technology
• Type: Step-Down (Buck), Step-Up (Boost)r

Specifications of LTC1266CS

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: Adjustable
• Current - Output: 50mA
• Frequency - Switching: 400kHz
• Voltage - Input: 3.5 ~ 18 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

SYMBOL
I
I
V
V
V
t
LTC1266
LTC1266-3.3/LTC1266-5
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: T
dissipation P
Note 3: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency. See Applications Information.
Note 4: In applications where R
time increases approximately 40%.
ELECTRICAL CHARACTERISTICS
4
Q1
Q2
OFF
SENSE1
SENSE2
SHDN
T
J
= T
J
A
is calculated from the ambient temperature T
+ (P
PARAMETER
V
PWR V
Current Sense Threshold
Current Sense Threshold
Shutdown Pin Threshold
Off-Time (Note 4)
D
IN
Normal Mode
Sleep Mode
Shutdown
Normal Mode
Sleep Mode
Shutdown
(Burst Mode Operation Enabled)
(Burst Mode Operation Disabled)
according to the following formula:
LTC1266CS, LTC1266IS
LTC1266CS
LTC1266IS
LTC1266-3.3, LTC1266-5 (I and C) V
LTC1266CS-3.3, LTC1266CS-5
LTC1266IS-3.3, LTC1266IS-5
LTC1266CS, LTC1266IS
LTC1266CS
LTC1266IS
LTC1266-3.3, LTC1266-5 (I and C) V
LTC1266CS-3.3, LTC1266CS-5
LTC1266IS-3.3, LTC1266IS-5
Pin DC Supply Current (Note 3)
D
IN
110 C/W)
DC Supply Current (Note 3)
SENSE
is placed at ground potential, the off-
CONDITIONS
3.5V < V
3.5V < V
V
3.5V < PWR V
3.5V < PWR V
V
V
V
V
V
V
V
V
V
V
V
V
V
C Grade
I Grade
C
C
SHUTDOWN
SHUTDOWN
BINH
SENSE
SENSE
SENSE
SENSE
SENSE
SENSE
BINH
SENSE
SENSE
SENSE
SENSE
SENSE
SENSE
T
T
= 390pF, I
= 390pF, I
A
and power
= 0V
= 2.1V
–
–
–
–
–
–
–
–
–
–
–
–
IN
IN
= 3.3V, V
= 3.3V, V
= 3.3V, V
= V
= V
= V
3.3V, V
3.3V, V
3.3V, V
= V
= V
= V
< 18V
< 18V
OUT
OUT
OUT
OUT
OUT
OUT
= 2.1V, 3.5V < V
= 2.1V, 3.5V < PWR V
LOAD
LOAD
– 40 C < T
IN
IN
FB
FB
FB
– 100mV (Forced)
– 100mV (Forced)
+ 100mV (Forced)
– 100mV (Forced)
– 100mV (Forced)
+ 100mV (Forced)
< 18V
< 18V
FB
FB
FB
= 700mA, C Grade
= 700mA, I Grade
= V
= V
= V
= V
= V
= V
OUT
OUT
OUT
OUT
OUT
OUT
/2.64 + 25mV (Forced)
/2.64 – 25mV (Forced)
/2.64 – 25mV (Forced)
A
/2.64 + 25mV (Forced)
/2.64 – 25mV (Forced)
/2.64 – 25mV (Forced)
< 85 C (Note 5), V
Note 5: The LTC1266CS, LTC1266CS-3.3, LTC1266-5 and LTC1266ACS
are not tested and not quality assurance sampled at – 40 C and 85 C.
These specifications are guaranteed by design and/or correlation. The
LTC1266IS, LTC1266IS-3.3, LTC1266IS-5 and LTC1266AIS are
guaranteed and tested over the – 40 C to 85 C operating temperature
range.
Note 6: Unless otherwise noted the specifications for the LTC1266A are
the same as those for the LTC1266.
Note 7: t
IN
< 18V
IN
r
< 18V
and t
f
are measured at 10% and 90% levels.
IN
= 10V, unless otherwise noted.
MIN
0.55
0.50
135
135
135
135
130
130
130
130
3.8
3.8
TYP
170
155
155
155
155
–20
155
155
–20
155
155
2.1
0.8
0.8
25
20
25
25
1
1
5
5
MAX
260
180
190
180
190
185
195
185
195
3.3
6.5
7.0
60
50
7
7
2
2
UNITS
mA
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
A
A
A
A
A
V
V
s
s