LTC1550 Просмотр технического описания (PDF) - Linear Technology
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LTC1550 Datasheet PDF : 12 Pages
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LTC1550/LTC1551
ABSOLUTE MAXIMUM RATINGS (Note 1)
Supply Voltage ......................................................... 7V
Output Voltage ................................ 0.3V to (VCC – 14V)
Total Voltage, VCC to CPOUT ............................................. 14V
Input Voltage (SHDN Pin) ........... – 0.3V to (VCC + 0.3V)
Input Voltage (REG Pin)............................ – 0.3V to 12V
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
TOP VIEW
SHDN* 1
VCC 2
C1+ 3
VOUT 4
8 SENSE
7 CPOUT
6 GND
5 C1–
S8 PACKAGE
8-LEAD PLASTIC SO
*SHDN FOR LTC1550, SHDN FOR LTC1551
TJMAX = 150°C, θJA = 150°C/ W
ORDER
PART NUMBER
LTC1550CS8-4.1
LTC1551CS8-4.1
Consult factory for Military grade parts.
NC 1
C1+ 2
NC 3
VOUT 4
C1– 5
PGND 6
AGND 7
NC 8
TOP VIEW
16 VCC
15 SHDN
14 REG
13 SENSE
12 ADJ
11 CPOUT
10 NC
9 NC
GN PACKAGE
16-LEAD PLASTIC SSOP
TJMAX = 150°C, θJA = 150°C/ W
ORDER
PART NUMBER
LTC1550CGN
LTC1550IGN
GN PART MARKING
1550
ELECTRICAL CHARACTERISTICS
VCC = 4.5V to 6.5V, C1 = C2 = 0.1µF, COUT = 10µF, TA = 25°C unless otherwise specified. (Note 3)
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VCC
Supply Voltage
(LTC1550CGN/LTC1550IGN)
(LTC1550CS8-4.1/LTC1551CS8-4.1)
q 2.7
q 4.5
6.5
V
6.5
V
VREF
Reference Voltage
IS
Supply Current
fOSC
Internal Oscillator Frequency
VOL
REG Output Low Voltage
IREG
REG Sink Current
VIH
SHDN Input High Voltage
VIL
SHDN Input Low Voltage
IIN
SHDN Input Current
tON
Turn-On Time
VOUT
Output Regulation
(LTC1550CGN/LTC1550IGN)
VOUT
Output Regulation
(LTC1550CGN/LTC1550IGN)
q
1.24
V
VCC = 5V, VSHDN = VCC (LTC1550) or GND (LTC1551) q
VCC = 5V, VSHDN = GND (LTC1550) or VCC (LTC1551) q
4.25
7
mA
0.2
10
µA
900
kHz
IREG = 1mA, VCC = 5V
VREG = 0.8V, VCC = 5V
VCC = 5V
VCC = 5V
VSHDN = VCC
IOUT = 10mA
2.7V ≤ VCC ≤ 6.5V, 0 ≤ IOUT ≤ 5mA
2.8V ≤ VCC ≤ 6.5V, 0 ≤ IOUT ≤ 10mA
3.5V ≤ VCC ≤ 6.5V, 0 ≤ IOUT ≤ 20mA
2.7V ≤ VCC ≤ 6.5V, 0 ≤ IOUT ≤ 5mA
3.1V ≤ VCC ≤ 6.5V, 0 ≤ IOUT ≤ 10mA
3.75V ≤ VCC ≤ 6.5V, 0 ≤ IOUT ≤ 20mA
q
0.1
0.8
V
q7
15
mA
q2
V
q
0.8
V
q
0.1
1
µA
1
ms
q – 1.575 – 1.5 – 1.425
V
q – 1.575 – 1.5 – 1.425
V
q – 1.575 – 1.5 – 1.425
V
q – 2.1 – 2.0 – 1.9
V
q – 2.1 – 2.0 – 1.9
V
q – 2.1 – 2.0 – 1.9
V
2
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