参数资料
| 型号： | LT3489EMS8E#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 2/12页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST ADJ 2.5A 8MSOP |
| 标准包装： | 2,500 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 2.6 V ~ 40 V |
| 输入电压： | 2.6 V ~ 16 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 2MHz |
| 电流 - 输出： | 2.5A |
| 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： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽）裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-MSOP-EP |
LT3489
ABSOLUTE
(Note 1)
AXI U RATI GS
PACKAGE/ORDER I FOR ATIO
V IN Voltage ................................................................16V
SW Voltage ................................................ –0.4V to 40V
FB, V C , COMP, SS Voltages .........................................6V
V C
FB
SHDN
GND
1
2
3
4
TOP VIEW
8
7
6
5
SS
COMP
V IN
SW
SHDN Voltage ...........................................................16V
Current Into FB Pin ................................................±1mA
Maximum Junction Temperature .......................... 125°C
MS8E PACKAGE
8-LEAD PLASTIC MSOP
T JMAX = 125°C, θ JA = 40°C/W, θ JC = 10°C/W
EXPOSED PAD (PIN 9) IS GND (MUST BE SOLDERED TO PCB)
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
ORDER PART NUMBER
LT3489EMS8E
MS8E PART MARKING
LTBYF
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 speci?ed with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS The ● denotes the speci?cations which apply over the full operating
temperature range, otherwise speci?cations are at T A = 25°C. V IN = 3V, V SHDN = V IN unless otherwise noted. (Note 2)
PARAMETER
Minimum Operating Voltage
CONDITIONS
MIN
TYP
2.4
MAX
2.6
UNITS
V
Maximum Operating Voltage
16
V
Feedback Voltage
●
1.22
1.21
1.235
1.26
1.26
V
V
FB Pin Bias Current
Error Amp Transconductance
V FB = 1.25V (Note 3)
Δ I = 10 μ A
●
100
100
250
nA
μ mhos
Error Amp Voltage Gain
80
V/V
Quiescent Current
Quiescent Current in Shutdown
Reference Line Regulation
V SHDN = 2.5V, Not Switching
V SHDN = 0V, V IN = 3V
2.6V ≤ V IN ≤ 16V
2
0
0.01
4
1
0.05
mA
μ A
%
Switching Frequency
Maximum Switch Duty Cycle
●
●
1.8
85
2
90
2.2
MHz
%
Switch Current Limit
(Note 4)
●
2.5
3.5
5
A
Switch V CESAT
I SW = 2A
0.23
V
Switch Leakage Current
SHDN Pin Current
SHDN Pin Threshold
V SW = 5V
V SHDN = 5V
V SHDN = 1.4V
V SHDN = 0V
0.3
0.01
100
20
2
1.5
1
2
μ A
μ A
μ A
μ A
V
Soft-Start Charging Current
V SS = 0.5V
5
10
20
μ A
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LT3489E is guaranteed to meet performance speci?cations
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: Current ?ows out of the FB pin.
Note 4: Current limit guaranteed by design and/or correlation to static test.
Current limit is independent of duty cycle and is guaranteed by design.
from 0°C to 70°C. Speci?cations over the 40°C to 85°C operating
3489f
2
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