Datasheet

2
LTC1550L/LTC1551L
ABSOLUTE MAXIMUM RATINGS
W
WW
U
(Note 1)
Supply Voltage ...................................................... 5.5V
Output Voltage............................. 0.3V to (V
CC
– 10.5V)
Total Voltage, V
CC
to CP
OUT
.......................................... 10.8V
Input Voltage (SHDN Pin) ........... –0.3V to (V
CC
+ 0.3V)
Input Voltage (REG Pin) ............................. – 0.3V to 6V
Output Short-Circuit Duration.............................. 30 sec
Commercial Temperature Range .................0°C to 70°C
Extended Commercial Operating
Temperature Range (Note 3) .............. –40°C to 85°C
Industrial Temperature Range ................ –40°C to 85°C
Storage Temperature Range ................ –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
PACKAGE/ORDER INFORMATION
W
U
U
ORDER PART NUMBER
LTC1550LCGN
LTC1550LIGN
TOP VIEW
GN PACKAGE
16-LEAD PLASTIC SSOP
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
NC
C1
+
NC
V
OUT
C1
–
PGND
AGND
NC
V
CC
SHDN
REG
NC
ADJ
CP
OUT
NC
NC
T
JMAX
= 150°C, θ
JA
= 150°C/W
GN PART MARKING
T
JMAX
= 150°C, θ
JA
= 200°C/W
*SHDN FOR LTC1550L, SHDN FOR LTC1551L
*FOR ADJUSTABLE VERSION
ORDER PART NUMBER
MS8 PART MARKING
LTC1550LCMS8
LTC1550LCMS8-2
LTC1550LCMS8-2.5
LTC1550LCMS8-4.1
LTC1551LCMS8
LTC1551LCMS8-4.1
LTFQ
LTFT
LTEG
LTGR
LTFV
LTEH
T
JMAX
= 150°C, θ
JA
= 135°C/W
*SHDN FOR LTC1550L, SHDN FOR LTC1551L
*FOR ADJUSTABLE VERSION
1
2
3
4
8
7
6
5
TOP VIEW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
REG (ADJ*)
CP
OUT
GND
C1
–
SHDN*
V
CC
C1
+
V
OUT
1
2
3
4
8
7
6
5
TOP VIEW
REG (ADJ*)
CP
OUT
GND
C1
–
SHDN*
V
CC
C1
+
V
OUT
S8 PACKAGE
8-LEAD PLASTIC SO
ORDER PART NUMBER
LTC1550LCS8
LTC1550LCS8-2
LTC1550LCS8-2.5
LTC1550LCS8-4.1
LTC1551LCS8
LTC1551LCS8-4.1
Consult factory for Military grade parts and additional voltage options.
1550L
1550LI
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC
Supply Voltage
(Adjustable, Fixed –2V)
● 2.7 5.25 V
(Fixed –2.5V)
● 3.05 5.25 V
(Fixed –4.1V) ● 4.5 5.25 V
V
REF
Reference Voltage V
CC
= 5V, ADJ = GND, V
REF
= –V
OUT
1.225 V
∆V
REF
Reference Voltage I
OUT
= 0mA, 2.7V ≤ V
CC
≤ 5.25V 2.5 mV/V
∆(V
CC
– V
OUT)
Line Regulation
I
S
Supply Current V
CC
= 5V, V
SHDN
= V
CC
(LTC1550L) or GND (LTC1551L) ● 3.65 7 mA
V
CC
= 5V, V
SHDN
= GND (LTC1550L) or V
CC
(LTC1551L) ● 0.2 10 µA
The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C.
V
CC
= 2.7V to 5.25V, C1 = C
CP
= 0.1µF, C
OUT
= 10µF, T
A
= 25°C unless otherwise specified. (Note 3)
ELECTRICAL CHARACTERISTICS