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| 型号： | LTM8042IV#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/32页 |
| 文件大小： | 0K |
| 描述： | IC UMODULE LED DRIVER 56LGA |
| 软件下载： | LTM8042 Spice Model |
| 设计资源： | DC1511A Design Files |
| 特色产品： | μModule Products |
| 标准包装： | 170 |
| 系列： | LTM8042 |
| 输入电压： | 3 ~ 30V |
| 输出电压： | 2 ~ 32V |
| 电流 - 输出： | 1A |
| 功率（瓦特）： | 32W |
| 安装类型： | 表面贴装 |
| 端接类型： | 表面安装 (SMD，SMT) |
| 尺寸/尺寸： | 0.59" L x 0.35" W x 0.11" H（15.0mm x 9.0mm x 2.8mm） |
| 工作温度： | -40°C ~ 125°C |
| 类型： | * |
| 配用： | DC1511A-B-ND - BOARD EVAL LTM8042-1 |
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LTM8042/LTM8042-1
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full internal
operating temperature range, otherwise specifications are at T A = 25°C. V CC = 5V, buck mode with 4Ω load.
SYMBOL
V CC(MIN)
I LED
PARAMETER
Minimum Input DC Voltage
LTM8042 LED Current
CONDITIONS
CTL Open
CTL Open, R CTL = 6.81k
l
MIN
3
0.9
0.45
TYP
0.5
MAX
1.05
0.55
UNITS
V
A
A
LTM8042-1 LED Current
R CTL = 6.81k
0.34
0.17
0.39
0.20
A
A
V CLAMP
Δ I OUT /I OUT
I QVCC
Open LED Clamp Voltage
Output Current Line Regulation
V CC Supply Current
Boost Mode, LED + Open
LTM8042, 6V < BSTOUT/BKIN < 30V
LTM8042-1, 6V < BSTOUT/BKIN < 30V
PWM = 0V
RUN = 0V
36
0.5
0.5
4.2
0.1
1
V
%
%
mA
μA
f SW
I SS
Switching Frequency
Soft-Start Pin Current
RT = 90.9k
RT = 22.1k
RT = 6.04k
SS = 0.5V, Out of Pin
0.22
0.68
1.7
6
0.25
0.8
2
9
0.27
0.92
2.3
12
MHz
MHz
MHz
μA
f SYNC
I SYNC
Synchronization Frequency Range
SYNC Pull-Down Current (Into the Pin)
V SYNC = 2V
0.3
60
2.5
MHz
μA
V SYNC(IL)
V SYNC(IH)
SYNC Input Low
SYNC Input High
1.5
0.4
V
V
I CTL
V RUN(IH)
V RUN(IL)
CTL Input Bias Current
RUN Input Voltage High
RUN Input Voltage Low
CTL = 0V, Flows Out of Pin
1.5
100
0.4
μA
V
V
I RUN
RUN Pin Bias Current
60
100
μA
V PWM(IH)
V PWM(IL)
PWM Input Voltage High
PWM Input Voltage Low
1.5
0.4
V
V
I PWM
PWM Pin Bias Current
60
120
μA
V TG(OH)
V TG(OL)
V TGEN(IH)
V TGEN(IL)
TG Output High Voltage
TG Output Low Voltage
TGEN Input Voltage High
TGEN Input Voltage Low
Relative to LED + , 100k from LED + to TG
Relative to LED + , 100k from LED + to TG
PWM = 0V
1.5
0
–7
0.4
V
V
V
V
I TGEN
TGEN Pin Bias Current
100
200
μA
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: Absolute maximum voltage at V CC , RUN, PWM, TGEN, BSTIN/
BKLED – pins is 40V for non-repetitive one second transients and 30V for
continuous operation.
Note 3: The LTM8042E/LTM8042E-1 are guaranteed to meet performance
specifications from 0°C to 125°C ambient. Specifications over the full
–40°C to 125°C internal operating temperature range are assured by
design, characterization and correlation with statistical process controls.
The LTM8042I/LTM8042I-1 are guaranteed to meet specifications over
the full –40°C to 125°C internal operating temperature range. Note that
the maximum internal temperature is determined by specific operating
conditions in conjunction with board layout, the rated package thermal
resistance and other environmental factors.
Note 4: This device includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed the maximum internal operating temperature
when overtemperature protection is active. Continuous operation above
the specified maximum operating junction temperature may impair device
reliability.
80421fa
3
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