Datasheet

2
LTC1148
LTC1148-3.3/LTC1148-5
114835fd
A
U
G
W
A
W
U
W
ARB
S
O
LU
T
EXI T
I
S
ORDER PART
NUMBER
LTC1148CN
LTC1148HVCN
LTC1148CN-3.3
LTC1148HVCN-3.3
LTC1148CN-5
LTC1148HVCN-5
LTC1148CS
LTC1148HVCS
LTC1148LCS
LTC1148CS-3.3
LTC1148HVCS-3.3
LTC1148LCS-3.3
LTC1148CS-5
LTC1148HVCS-5
LTC1148HVIS-5
WU
U
PACKAGE
/
O
RDER I FOR ATIO
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
9
Feedback Voltage (LTC1148, LTC1148L, V
IN
= 9V ● 1.21 1.25 1.29 V
LTC1148HV)
I
9
Feedback Current (LTC1148, LTC1148L, ● 0.2 1 µA
LTC1148HV)
V
OUT
Regulated Output Voltage V
IN
= 9V
LTC1148-3.3, LTC1148HV-3.3, LTC1148L-3.3 I
LOAD
= 700mA ● 3.23 3.33 3.43 V
LTC1148-5, LTC1148HV-5 I
LOAD
= 700mA ● 4.90 5.05 5.20 V
∆V
OUT
Output Voltage Line Regulation V
IN
= 7V to 12V, I
LOAD
= 50mA – 40 0 40 mV
Output Voltage Load Regulation
LTC1148-3.3, LTC1148HV-3.3, LTC1148L-3.3 5mA < I
LOAD
< 2A ● 40 65 mV
LTC1148-5, LTC1148HV-5 5mA < I
LOAD
< 2A ● 60 100 mV
Output Ripple (Burst Mode) I
LOAD
= 0A 50 mV
P-P
I
Q
Input DC Supply Current (Note 3) (Note 7)
LTC1148 Series
Normal Mode 4V < V
IN
< 12V 1.6 2.1 mA
Sleep Mode 4V < V
IN
< 12V 160 230 µA
Sleep Mode (LTC1148-5) 6V < V
IN
< 12V 160 230 µA
Shutdown V
SHUTDOWN
= 2.1V, 4V < V
IN
< 12V 10 20 µA
LTC1148HV Series
Normal Mode 4V < V
IN
< 18V 1.6 2.3 mA
Sleep Mode 4V < V
IN
< 18V 160 250 µA
Sleep Mode (LTC1148HV-5) 6V < V
IN
< 18V 160 250 µA
Shutdown V
SHUTDOWN
= 2.1V, 4V < V
IN
< 18V 10 22 µA
LTC1148L Series
Normal Mode 3.5V < V
IN
< 12V 1.6 2.1 mA
Sleep Mode 3.5V < V
IN
< 12V 160 230 µA
Shutdown V
SHUTDOWN
= 2.1V, 3.5V < V
IN
< 12V 10 20 µA
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 10V, V
SHUTDOWN
= 0V unless otherwise noted.
E
LECTR
IC
AL C CHARA TERIST
ICS
1
2
3
4
5
6
7
TOP VIEW
S PACKAGE
14-LEAD PLASTIC SO
N PACKAGE
14-LEAD PDIP
14
13
12
11
10
9
8
P-DRIVE
NC
V
IN
C
T
INTV
CC
I
TH
SENSE
–
N-DRIVE
NC
PGND
SGND
SHUTDOWN
V
FB
*
SENSE
+
*FIXED OUTPUT VERSIONS = NC
T
JMAX
= 125°C, θ
JA
= 70°C/ W (N)
T
JMAX
= 125°C, θ
JA
= 110°C/ W (S)
(Note 1)
Input Supply Voltage (Pin 3)
LTC1148 and LTC1148L Series ............ 16V to –0.3V
LTC1148HV Series ............................... 20V to – 0.3V
Continuous Output Current (Pins 1, 14) .............. 50mA
Sense Voltages (Pins 7, 8)
LTC1148HV (Adjustable Only)
V
IN
≥ 12.7V ...................................... 13V to – 0.3V
V
IN
< 12.7V ......................... (V
IN
+ 0.3V) to –0.3V
Operating Ambient Temperature Range ...... 0°C to 70°C
Extended Commercial and Industrial
Temperature Range ............................... – 40°C to 85°C
Junction Temperature (Note 2)............................ 125°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.