LT1573 데이터 시트보기 (PDF) - Linear Technology
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LT1573 Datasheet PDF : 16 Pages
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LT1573
ABSOLUTE AXI U RATI GS
(Note 1)
Input Pin Voltage (VIN to GND) ............................... 10V
Drive Pin Voltage (VDRIVE to GND) .......................... 10V
Output Pin Voltage (VOUT to GND) .......................... 10V
Shutdown Pin Voltage (VSHDN to GND) .................. 10V
Operating Junction Temperature Range
LT1573C ............................................... 0°C to 125°C
LT1573I ............................................ –40°C to 125°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec.)................ 300°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
FB 1
LATCH 2
SHDN 3
GND 4
8 COMP
7 VOUT
6 VIN
5 DRIVE
S8 PACKAGE
8-LEAD PLASTIC SO
TJMAX = 125°C, θJA = 85°C/ W
Consult factory for Military grade parts.
ORDER PART
NUMBER
LT1573CS8
LT1573CS8-2.5
LT1573CS8-2.8
LT1573CS8-3.3
LT1573IS8
S8 PART MARKING
1573 157333
157325 1573I
157328
ELECTRICAL CHARACTERISTICS The q denotes specifications that apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. VIN = 5V, VDRIVE = 3V, unless otherwise noted.
PARAMETER
DC Characteristics
LT1573 Reference Voltage (Adjustable)(Note 2)
LT1573-3.3 Output Voltage (Note 2)
LT1573-2.8 Output Voltage (Note 2)
LT1573-2.5 Output Voltage (Note 2)
Line Regulation
LT1573 (VFB)
LT1573-3.3 (VOUT)
LT1573-2.8 (VOUT)
LT1573-2.5 (VOUT)
Load Regulation
LT1573 (VFB)
LT1573-3.3 (VOUT)
LT1573-2.8 (VOUT)
LT1573-2.5 (VOUT)
FB Pin Bias Current (Adjustable Only)
DRIVE Pin Current
DRIVE Pin Saturation Voltage
SHDN Pin Threshold Voltage
SHDN Pin Current
CONDITIONS
IDRIVE = 20mA, TJ = 25°C
5mA < IDRIVE < 250mA, 3V < VIN < 7V,
1.5V < VDRIVE < 7V
IDRIVE = 20mA. TJ = 25°C
5mA < IDRIVE < 250mA, 3.5V < VIN < 7V,
1.5V < VDRIVE < 7V
IDRIVE = 20mA, TJ = 25°C
5mA < IDRIVE < 250mA, 3V < VIN < 7V,
1.5V < VDRIVE < 7V
IDRIVE = 20mA, TJ = 25°C
5mA < IDRIVE < 250mA, 3V < VIN < 7V,
1.5V < VDRIVE < 7V
IDRIVE = 20mA, 3V < VIN < 7V
IDRIVE = 20mA, 3.5V < VIN < 7V
IDRIVE = 20mA, 3V < VIN < 7V
IDRIVE = 20mA, 3V < VIN < 7V
∆IDRIVE = 20mA to 250mA
∆IDRIVE = 20mA to 250mA
∆IDRIVE = 20mA to 250mA
∆IDRIVE = 20mA to 250mA
VFB = 1.265V
VFB = 1.35V, VDRIVE = 7V
VFB = 1.15V, VDRIVE = 1.5V
IDRIVE = 20mA, VFB = 1.15V
IDRIVE = 250mA, VFB = 1.15V
VSHDN = 5V
MIN TYP MAX
UNITS
1.252 1.265 1.278
V
q 1.225 1.265 1.305
V
3.267 3.3 3.333
V
q 3.234 3.3 3.366
V
2.772 2.8 2.828
V
q 2.744 2.8 2.856
V
2.475 2.5 2.525
V
q 2.450 2.5 2.550
V
q
0.17
2
mV
q
0.34
5
mV
q
0.34
4
mV
q
0.25
4
mV
q
7
30
mV
q
18
40
mV
q
15
34
mV
q
13
30
mV
q
0.8
5
µA
q
2
mA
q 250
440
mA
q
0.12 0.3
V
q
0.73 1.4
V
q 1.0
1.33
1.6
V
200
µA
2
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