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参数资料
| 型号： | LT3502AIDC |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 1.1 A SWITCHING REGULATOR, 2800 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封装： | 2 X 2 MM, PLASTIC, DFN-10 |
| 文件页数： | 12/20页 |
| 文件大小： | 457K |
| 代理商： | LT3502AIDC |
LT3502/LT3502A
2
3502f
PACKAGE/ORDER INFORMATION
ELECTRICAL CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS
Input Voltage (VIN)....................................................40V
BOOST Voltage .........................................................50V
BOOST Pin Above SW Pin...........................................7V
FB Voltage...................................................................6V
SHDN Voltage ...........................................................40V
BD Voltage ..................................................................7V
Operating Junction Temperature Range (Note 2)
LT3502AE, LT3502E........................... –40°C to 125°C
LT3502AI, LT3502I ............................ –40°C to 125°C
Storage Temperature Range................... –65°C to 150°C
(Note 1)
TOP VIEW
VIN
BD
FB
SHDN
SW
BOOST
DA
GND
DC PACKAGE
8-LEAD (2mm
× 2mm) PLASTIC DFN
9
4
1
2
3
6
5
7
8
θJA = 102°C/W
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
ORDER PART NUMBER
DC PART MARKING*
LT3502EDC
LT3502IDC
LT3502AEDC
LT3502AIDC
LCLV
LCLT
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
ConsultLTCMarketingforpartsspeciedwithwideroperatingtemperatureranges.
*Thetemperaturegradeisidentiedbyalabelontheshippingcontainer.
The
● denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. VIN = 10V, VSHDN = 5V, VBOOST = 15V.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Undervoltage Lockout
2.6
2.8
3
V
Quiescent Current at Shutdown
VSHDN = 0V
0.5
2
μA
Quiescent Current
Not Switching
1.5
2
mA
Feedback Voltage
●
0.785
0.79
0.8
0.813
0.81
V
Reference Voltage Line Regulation
0.005
%/V
FB Pin Bias Current
(Note 5)
●
15
50
nA
Switching Frequency
IDA < 500mA (LT3502A)
IDA < 500mA (LT3502)
●
1.9
1.8
0.9
0.8
2.25
1.1
2.7
2.8
1.3
1.4
MHz
Maximum Duty Cycle
100mA Load (LT3502A)
100mA Load (LT3502)
70
80
90
%
Switch VCESAT
ISW = 500mA
450
mV
Switch Current Limit
(Note 3)
0.75
0.9
1.1
A
Switch Active Current
SW = 10V (Note 4)
SW = 0V (Note 5)
95
8
130
30
μA
BOOST Pin Current
ISW = 500mA
10
13
mA
Minimum BOOST Voltage Above Switch
ISW = 500mA
1.9
2.2
V
BOOST Schottky Forward Drop
IOUT = 100mA
0.8
1
V
DA Pin Current to Stop OSC
500
650
mA
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