LTC1147CS8-5#TRPBF Linear Technology, LTC1147CS8-5#TRPBF Datasheet - Page 3

• Manufacturer Part Number: LTC1147CS8-5#TRPBF
• Description: IC SW REG STEP-DOWN 5V 8-SOIC
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC1147CS8-5#TRPBF

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 5V
• Current - Output: 50mA
• Frequency - Switching: 400kHz
• Voltage - Input: 3.5 ~ 14 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

– 40 C T
SYMBOL
V
V
I
I
t
t
SYMBOL
V
V
I
V
V
t
The
temperature range.
Note 1: T
dissipation P
Note 2: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency. See Applications Information.
ELECTRICAL CHARACTERISTICS
6
2
OFF
r
Q
OFF
5
6
, t
6
OUT
5
6
– V
– V
f
LTC1147CN8-3.3/LTC1147CN8-5: T
LTC1147LIS/LTC1147IS8/LTC1147LCS/
LTC1147CS8-3.3/LTC1147CS8-5: T
4
4
denotes specifications which apply over the full specified
J
is calculated from the ambient temperature T
A
D
PARAMETER
Current Sense Threshold Voltage (Note 6)
SHDN Pin Threshold
SHDN Pin Input Current
C
Off-Time (Note 3)
Driver Output Transition Times
PARAMETER
Feedback Voltage (LTC1147L)
Regulated Output Voltage
Input DC Supply Current (Note 2)
Current Sense Threshold Voltage (Note 6)
SHDN Pin Threshold
Off-Time (Note 3)
according to the following formulas:
T
85 C (Note 4), V
LTC1147-3.3, LTC1147L-3.3
LTC1147–5
LTC1147L
LTC1147-3.3/LTC1147-5/LTC1147L-3.3
LTC1147-3.3/LTC1147-5/LTC1147L-3.3
LTC1147-3.3/LTC1147L-3.3
LTC1147-5
LTC1147 Series
LTC1147L Series
LTC1147-3.3
LTC1147-5
LTC1147L
LTC1147-3.3/LTC1147-5/LTC1147L-3.3
Pin Discharge Current
Normal Mode
Sleep Mode
Sleep Mode (LTC1147-5)
Shutdown
Normal Mode
Sleep Mode
Shutdown (LTC1147L-3.3)
IN
= 10V, unless otherwise noted.
J
J
= T
= T
A
A
+ (P
+ (P
D
D
)(150 C/W)
)(110 C/W)
A
and power
CONDITIONS
V
V
V
V
V
V
0V < V
V
V
C
C
CONDITIONS
V
V
I
I
(Note 5)
4V < V
4V < V
5V < V
V
3.5V < V
3.5V < V
V
V
V
V
V
V
V
0V < V
C
LOAD
LOAD
SENSE
SENSE
SENSE
SENSE
SENSE
SENSE
OUT
OUT
T
L
IN
IN
SHDN
SHDN
SENSE
SENSE
SENSE
SENSE
SENSE
SENSE
T
= 390pF, I
= 3000pF (Pin 8), V
= 390pF, I
= 9V
= 9V
T
in Regulation, V
= 0V
= 700mA
= 700mA
SHDN
IN
IN
IN
SHDN
= 2.1V, 4V < V
= 2.1V, 3.5V < V
A
–
–
–
–
–
–
–
–
–
–
–
–
IN
IN
= V
= V
= V
= V
= 5V, V6 = V
= 5V, V6 = V
= 5V, 6V = V
= 5V, 6V = V
= 25 C, V
= V
= V
= V
= V
< 12V
< 12V
< 12V
< 12V
< 12V
OUT
OUT
OUT
OUT
< 8V, V
OUT
OUT
OUT
OUT
< 8V, V
LOAD
LOAD
+ 100mV (Forced)
– 100mV (Forced)
+ 100mV (Forced)
– 100mV (Forced)
+ 100mV (Forced)
– 100mV (Forced)
+ 100mV (Forced)
– 100mV (Forced)
Note 3: In applications where R
time increases approximately 40%.
Note 4: The LTC1147C 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
LTC1147I is guaranteed to meet the extended temperature limits.
Note 5: The LTC1147L/LTC1147L-3.3 allow operation to V
Note 6: The LTC1147L is tested with external feedback resistors resulting
in a nominal output voltage of 2.5V.
= 700mA
= 700mA
IN
IN
IN
OUT
OUT
OUT
OUT
SENSE
IN
= 16V
= 16V
= 10V, V
IN
IN
< 12V
/4 + 25mV (Forced)
/4 – 25mV (Forced)
/4 + 25mV (Forced)
/4 – 25mV (Forced)
= 6V
< 12V
–
= V
SHDN
OUT
= 0V, unless otherwise noted.
LTC1147-5/LTC1147L
SENSE
1.20
3.17
4.85
MIN
MIN
130
130
130
125
125
125
0.5
0.5
3.8
is placed at ground potential, the off-
50
4
LTC1147-3.3
1.25
3.33
5.05
TYP
TYP
150
150
150
100
160
160
160
150
150
150
0.8
1.2
1.6
1.6
0.8
25
25
25
25
70
10
10
25
25
2
5
5
MAX
1.30
3.43
5.20
260
260
260
185
185
185
2.4
2.4
6.5
22
22
MAX
2
IN
170
170
170
200
90
10
2
5
6
= 3.5V.
sn1147 1147fds
UNITS
UNITS
3
mV
mV
mV
mV
mV
mV
mA
mA
mV
mV
mV
mV
mV
mV
ns
V
A
A
A
V
V
V
A
A
A
A
A
V
s
s