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参数资料
| 型号： | LT1931IS5#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 2/12页 |
| 文件大小： | 0K |
| 描述： | IC REG INV 1A TSOT23-5 |
| 标准包装： | 2,500 |
| 类型： | 反相 |
| 输出数： | 1 |
| 输入电压： | 2.45 V ~ 16 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1.2MHz |
| 电流 - 输出： | 1A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-5 细型，TSOT-23-5 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | TSOT-23-5 |
LT1931/LT1931A
ABSOLUTE
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
(Note 1)
V IN Voltage .............................................................. 16V
TOP VIEW
SW Voltage ................................................ – 0.4V to 36V
NFB Voltage ............................................................. – 2V
Current Into NFB Pin ............................................ ± 1mA
SW 1
GND 2
NFB 3
5 V IN
4 SHDN
SHDN Voltage .......................................................... 16V
Maximum Junction Temperature .......................... 125 ° C
Operating Temperature Range (Note 2) .. – 40 ° C to 85 ° C
Storage Temperature Range ................. – 65 ° C to 150 ° C
Lead Temperature (Soldering, 10 sec).................. 300 ° C
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
T JMAX = 125 ° C, θ JA = 150 ° C/ W
ORDER PART NUMBER S5 PART MARKING
LT1931ES5 LTRA
LT1931AES5
LT1931IS5
LT1931AIS5
LTSP
LTBZF
LTBZG
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/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are T A = 25 ° C.
V IN = 3V, V SHDN = V IN , unless otherwise noted. (Note 2)
LT1931
LT1931A
PARAMETER
Minimum Operating Voltage
CONDITIONS
MIN
TYP
2.45
MAX
2.6
MIN
TYP MAX
2.45
2.6
UNITS
V
Maximum Operating Voltage
Feedback Voltage
●
16
– 1.275 – 1.255 – 1.235
– 1.280 – 1.230
16
–1.275 –1.255 –1.235
–1.280 –1.230
V
V
V
NFB Pin Bias Current
Quiescent Current
Quiescent Current in Shutdown
Reference Line Regulation
V NFB = –1.255V
V SHDN = 2.4V, Not Switching
V SHDN = 0V, V IN = 3V
2.6V ≤ V IN ≤ 16V
●
4
4.2
0.01
0.01
8
6
1
0.05
8
5.8
0.01
0.01
16
8
1
0.05
μ A
mA
μ A
%/V
Switching Frequency
Maximum Duty Cycle
●
●
1
0.85
84
1.2
90
1.4
1.6
1.8
1.6
75
2.2
82
2.6
2.9
MHz
MHz
%
Switch Current Limit
Switch V CESAT
Switch Leakage Current
(Note 3)
I SW = 1A
V SW = 5V
1
1.2
400
0.01
2
600
1
1
1.2
400
0.01
2.5
600
1
A
mV
μ A
SHDN Input Voltage, High
SHDN Input Voltage, Low
2.4
0.5
2.4
0.5
V
V
SHDN Pin Bias Current
V SHDN = 3V
V SHDN = 0V
16
0
32
0.1
35
0
70
0.1
μ A
μ A
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LT1931E/LT1931AE are guaranteed to meet performance
specifications from 0 ° C to 70 ° C. Specifications over the – 40 ° C to 85 ° C
operating temperature range are assured by design, characterization and
correlation with statistical process controls. LT1931I/LT1931AI are
guaranteed over the –40 ° C to 85 ° C temperature range.
Note 3: Current limit guaranteed by design and/or correlation to static test.
1931fa
2
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