LTC1148CS-5 Linear Technology, LTC1148CS-5 Datasheet - Page 3

• Manufacturer Part Number: LTC1148CS-5
• Description: IC SW REG STEP-DOWN 5V 14-SOIC
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC1148CS-5

• Internal Switch(s): No
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 5V
• Current - Output: 50mA
• Frequency - Switching: 250kHz
• Voltage - Input: 3.5 ~ 20 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

temperature range, otherwise specifications are at T
SYMBOL
V
V
I
I
t
t
– 40°C ≤ T
SYMBOL
V
∆V
I
V
V
t
ELECTRICAL C
10
4
OFF
R
Q
OFF
8
10
9
8
10
, t
– V
OUT
– V
F
7
7
A
≤ 85°C (Note 5), V
PARAMETER
Current Sense Threshold Voltage
LTC1148, LTC1148HV, LTC1148L
LTC1148-3.3, LTC1148HV-3.3
LTC1148L-3.3
LTC1148-5, LTC1148HV-5
Shutdown Pin Threshold
Shutdown Pin Input Current
C
Off Time (Note 5)
Driver Output Transition Times
PARAMETER
Feedback Voltage (LTC1148, LTC1148HV
LTC1148L)
Regulated Output Voltage
Input DC Supply Current (Note 3)
Current Sense Threshold Voltage
Shutdown Pin Threshold
Off Time (Note 5)
LTC1148-5, LTC1148HV-5
T
LTC1148-3.3, LTC1148HV-3.3, LTC1148L-3.3 I
LTC1148 Series
LTC1148HV Series
LTC1148L Series
LTC1148, LTC1148HV, LTC1148L (Note 4)
LTC1148-3.3, LTC1148HV-3.3, LTC1148L-3.3 V
LTC1148-5, LTC1148HV-5
Pin Discharge Current
Normal Mode
Sleep Mode
Sleep Mode
Shutdown
Normal Mode
Sleep Mode
Sleep Mode
Shutdown
Normal Mode
Sleep Mode
Shutdown
HARA TERISTICS
IN
= 10V, unless otherwise noted.
C
A
= 25°C. V
CONDITIONS
V
V
V
V
V
V
0V < V
V
V
C
C
CONDITIONS
V
V
I
(Note 7)
4V < V
4V < V
6V < V
V
4V < V
4V < V
6V < V
V
3.5V < V
3.5V < V
V
V
V
V
V
V
C
LOAD
LOAD
SENSE
SENSE
SENSE
SENSE
SENSE
SENSE
OUT
OUT
T
L
IN
IN
SHUTDOWN
SHUTDOWN
SHUTDOWN
SENSE
SENSE
SENSE
SENSE
SENSE
SENSE
T
The
= 390pF, I
= 3000pF (Pins 1, 14), V
= 390pF, I
= 9V
= 9V
in Regulation, V
= 0V
= 700mA
= 700mA
SHUTDOWN
IN
IN
IN
IN
IN
IN
●
–
–
–
–
–
–
–
–
–
–
–
–
IN
IN
IN
= 5V, V
= 5V, V
= V
= V
= V
= V
= 5V, V
= 5V, V
= V
= V
= V
= V
denotes the specifications which apply over the full operating
< 12V
< 12V
< 12V
< 18V
< 18V
< 18V
= 10V, V
< 12V
< 12V
OUT
OUT
OUT
OUT
= 2.1V, 4V < V
= 2.1V, 4V < V
= 2.1V, 3.5V < V
OUT
OUT
OUT
OUT
LOAD
LOAD
9
9
9
9
+ 100mV (Forced)
– 100mV (Forced)
+ 100mV (Forced)
– 100mV (Forced)
+ 100mV (Forced)
– 100mV (Forced)
+ 100mV (Forced)
– 100mV (Forced)
< 8V, V
= V
= V
= V
= V
= 700mA
= 700mA
SHUTDOWN
OUT
OUT
OUT
OUT
SENSE
/4 + 25mV (Forced)
/4 – 25mV (Forced)
IN
/4 – 25mV (Forced)
/4 + 25mV (Forced)
IN
IN
= 16V
–
IN
IN
= V
< 12V
< 18V
= 6V
< 12V
= 0V unless otherwise noted.
OUT
LTC1148-3.3/LTC1148-5
●
●
●
1.20
3.17
4.85
0.55
MIN
MIN
130
130
130
125
125
125
0.5
3.8
50
4
1.25
3.33
5.05
TYP
TYP
150
150
150
100
160
160
160
160
160
150
150
150
0.8
1.2
1.6
1.6
1.6
0.8
25
25
25
70
10
10
10
25
25
25
2
5
5
LTC1148
MAX
MAX
1.30
3.43
5.20
170
170
170
200
260
260
280
280
260
175
175
175
2.4
2.6
2.4
90
10
22
24
22
2
5
6
2
6
114835fd
UNITS
UNITS
3
mV
mV
mV
mV
mV
mV
mA
mA
mA
mV
mV
mV
mV
mV
mV
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µs
ns
µs
V
V
V
V
V