LTC1148HV Linear Technology, LTC1148HV Datasheet - Page 3

• Manufacturer Part Number: LTC1148HV
• Description: High Efficiency Synchronous Step-Down Switching Regulators
• Manufacturer: Linear Technology

SYMBOL
V
V
I
I
t
t
– 40 C T
SYMBOL
V
I
V
V
t
ELECTRICAL C
10
4
OFF
R
Q
OFF
8
10
9
8
10
V
, 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)
T
LTC1148-3.3, LTC1148HV-3.3, LTC1148L-3.3 I
LTC1148-5, LTC1148HV-5
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
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
T
A
= 390pF, I
= 3000pF (Pins 1, 14), V
= 390pF, I
= 9V
= 9V
= 25 C, V
in Regulation, V
= 0V
= 700mA
= 700mA
SHUTDOWN
IN
IN
IN
IN
IN
IN
–
–
–
–
–
–
–
–
–
–
–
–
IN
IN
= 5V, V
= 5V, V
= V
= V
= V
= V
= 5V, V
= 5V, V
= V
= V
= V
= V
< 12V
< 12V
< 12V
< 18V
< 18V
< 18V
< 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
IN
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
= 10V, V
OUT
OUT
OUT
OUT
SENSE
/4 + 25mV (Forced)
/4 – 25mV (Forced)
IN
/4 – 25mV (Forced)
/4 + 25mV (Forced)
IN
IN
= 16V
–
IN
SHUTDOWN
IN
= V
< 12V
< 18V
= 6V
< 12V
OUT
LTC1148-3.3/LTC1148-5
= 0V, unless otherwise noted.
1.20
MIN
MIN
3.17
4.85
0.55
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
UNITS
UNITS
3
mV
mV
mV
mV
mV
mV
mA
mA
mA
mV
mV
mV
mV
mV
mV
ns
V
A
A
A
V
V
V
A
A
A
A
A
A
A
A
V
s
s