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参数资料
| 型号： | LTC3408EDD#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 2/12页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK W/BYPASS TXRX 8-DFN |
| 标准包装： | 121 |
| 应用： | 转换器，WCDMA 功率放大器应用 |
| 输入电压： | 2.5 V ~ 5 V |
| 输出数： | 1 |
| 输出电压： | 0.3 V ~ 3.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WFDFN 裸露焊盘 |
| 供应商设备封装： | 8-DFN-EP（3x3） |
| 包装： | 管件 |
LTC3408
ABSOLUTE
AXI U
RATI GS
PACKAGE/ORDER I FOR ATIO
(Note 1)
Input Supply Voltage (< 300 μ s) .................. – 0.3V to 6V
Input Supply Voltage (DC) ....................... – 0.3V to 5.5V
TOP VIEW
ORDER PART
NUMBER
RUN, REF, V OUT Voltages .......................... – 0.3V to V IN
SW Voltage (DC) ......................... – 0.3V to (V IN + 0.3V)
P-Channel Switch Source Current (DC) ............. 800mA
N-Channel Switch Sink Current (DC) ................. 800mA
V OUT
V IN
GND
SW
1
2
3
4
9
8
7
6
5
V OUT
V IN
REF
RUN
LTC3408EDD
LAEA
Peak SW Sink and Source Current ........................ 1.3A
Bypass P-Channel FET Source Current (DC) .............. 1A
Operating Temperature Range (Note 2) .. – 40 ° C to 85 ° C
Junction Temperature (Note 3) ............................ 125 ° C
Storage Temperature Range ................ – 65 ° C to 125 ° C
DD PACKAGE DD PART MARKING
8-LEAD (3mm × 3mm) PLASTIC DFN
EXPOSED PAD IS GND (PIN 9)
MUST BE SOLDERED TO PCB
T JMAX = 125 ° C, θ JA = 43 ° C/ W, θ JC = 3 ° C/ W
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 = 3.6V unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V OUT
Regulated Output Voltage
V REF = 1.1V
V REF = 0.1V
●
●
3.23
0.25
3.3
0.3
3.37
0.35
V
V
? V OUT
I PK
Output Voltage Line Regulation
Peak Inductor Current
V IN = 2.5V to 5V, V REF = 0.6V
V IN = 3V, V REF = 0.9V
●
0.70
0.1
1
0.4
1.25
%/V
A
V LOADREG
Output Voltage Load Regulation
0.7
%
V IN
I S
Input Voltage Range
Input Current
Shutdown Current
V RUN = 1.2V, SW = Open
V RUN = 0V, SW = Open
●
2.5
1.5
0.1
5
2.5
1
V
mA
μ A
f OSC
V REF
Oscillator Frequency
Bypass PFET Turn-Off Threshold
V REF ≥ 0.25V
V REF ≤ 0.1V
V REF =
●
1.2
550
1.167
1.5
700
1.2
1.8
850
MHz
kHz
V
Bypass PFET Turn-On Threshold
V REF =
1.21
1.26
V
R PFET
R NFET
R BYPASS
I LSW
I LBYP
R DS(ON) of P-Channel FET
R DS(ON) of N-Channel FET
R DS(ON) of Bypass P-Channel FET
SW Leakage
Bypass PFET Leakage
I SW = 160mA, Wafer Level
I SW = 160mA, DD Package
I SW = –160mA, Wafer Level
I SW = –160mA, DD Package
I OUT = 100mA, V IN = 3V, Wafer Level
I OUT = 100mA, V IN = 3V, DD Package (Note 4)
V RUN = 0V, V SW = 0V or 5V, V IN = 5V
V OUT = 0V, V IN = 5V, V REF = 0V
0.3
0.4
0.3
0.4
0.05
0.08
± 0.01
± 0.01
0.4
0.4
0.08
± 1
± 1
?
?
?
?
?
?
μ A
μ A
V RUN
RUN Threshold
●
0.3
1
1.5
V
I RUN
I REF
RUN Input Current
REF Input Current
V RUN = 0V or 2.5V
●
●
± 0.01
± 0.01
± 1
± 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 LTC3408E is 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.
Note 3: T J is calculated from the ambient temperature T A and power
dissipation P D according to the following formula:
LTC3408: T J = T A + (P D )(43 ° C/W)
3408f
2
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| LTC3409AEDD#PBF | 功能描述:IC REG BUCK SYNC ADJ 0.6A 8DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:升压（升压） 输出类型:可调式 输出数:1 输出电压:1.24 V ~ 30 V 输入电压:1.5 V ~ 12 V PWM 型:电流模式，混合 频率 - 开关:600kHz 电流 - 输出:500mA 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-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) 供应商设备封装:8-SOIC |
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