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参数资料
| 型号： | LT3755EUD-2#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/26页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR HP CONST CURR 16-QFN |
| 标准包装： | 121 |
| 恒定电流： | 是 |
| 恒定电压： | 是 |
| 拓扑： | 回扫，低端，PWM，SEPIC，降压（降压），升压（升压） |
| 输出数： | 1 |
| 内部驱动器： | 无 |
| 类型 - 主要： | 车载 |
| 类型 - 次要： | 白色 LED |
| 频率： | 100kHz ~ 1MHz |
| 电源电压： | 4.5 V ~ 40 V |
| 输出电压： | 75V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WFQFN 裸露焊盘 |
| 供应商设备封装： | 16-QFN-EP（3x3） |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 125°C |
| 产品目录页面： | 1340 (CN2011-ZH PDF) |
LT3755/LT3755-1/LT3755-2
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25°C. V IN = 24V, SHDN /UVLO = 24V, CTRL = 2V , PWM = 5V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V IN Minimum Operating Voltage
V IN Shutdown I Q
V IN Operating I Q (Not Switching)
V IN Tied to INTV CC
SHDN /UVLO = 0V, PWM = 0V
SHDN /UVLO = 1.15V, PWM = 0V
PWM = 0V
l
0.1
1.4
4.5
1
5
1.7
V
μA
μA
mA
V REF Voltage
100μA ≤ I VREF ≤ 0μA
l
1.965
2.00
2.045
V
V REF Line Regulation
4.5V ≤ V IN ≤ 40V
0.006
%/V
SENSE Current Limit Threshold
SENSE Input Bias Current
SS Pull-Up Current
Current Out of Pin
Current Out of Pin
l
98
8
108
40
10
118
13
mV
μA
μA
Error Amplifier
ISP/ISN Full-Scale Current Sense Threshold
ISP/ISN Full-Scale Current Sense Threshold at CTRL = 0V
FB = 0V, ISP = 48V
CTRL = 0V, FB = 0V, ISP = 48V
l
96
–12
100
–9.5
103
–7
mV
mV
CTRL Pin Range for Current Sense Threshold Adjustment
CTRL Input Bias Current
LED Current Sense Amplifier Input Common Mode Range (V ISN )
Current Out of Pin
l
l
0
2.9
50
1.1
100
75
V
nA
V
ISP/ISN Short-Circuit Threshold
ISN = 0V
115
150
200
mV
ISP/ISN Short-Circuit Fault Sensing Common Mode Range (V ISN )
ISP/ISN Input Bias Current (Combined)
LED Current Sense Amplifier g m
VC Output Impedance
VC Standby Input Bias Current
PWM = 5V (Active), ISP = ISN = 48V
PWM = 0V (Standby), ISP = ISN = 48V
V (ISP – ISN) = 100mV
1V < VC < 2V
PWM = 0V
l
0
–20
55
0
120
15000
3
0.1
20
V
μA
μA
μS
kΩ
nA
FB Regulation Voltage (V FB )
ISP = ISN
l
1.232
1.220
1.250
1.250
1.265
1.270
V
V
FB Amplifier g m
FB = V FB , ISP = ISN
480
μS
FB Pin Input Bias Current
Current Out of Pin
40
100
nA
FB Open LED Threshold
FB Overvoltage Threshold
OPENLED Falling (LT3755 and LT3755-2)
PWMOUT Falling
V FB –
65mV
V FB +
50mV
V FB –
50mV
V FB +
60mV
V FB –
40mV
V FB +
75mV
V
V
VC Current Mode Gain – ( ? V VC / ? V SENSE )
Oscillator
4
V/V
Switching Frequency
R T = 100k
R T = 10k
l
90
925
100
1000
125
1050
kHz
kHz
Minimum Off-Time
170
ns
37551fd
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| LT3755HMSE-2#PBF | 功能描述:IC LED DVR HP CONST CURR 16MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:- 标准包装:6,000 系列:- 恒定电流:- 恒定电压:- 拓扑:开路漏极，PWM 输出数:4 内部驱动器:是 类型 - 主要:LED 闪烁器 类型 - 次要:- 频率:400kHz 电源电压:2.3 V ~ 5.5 V 输出电压:- 安装类型:表面贴装 封装/外壳:8-VFDFN 裸露焊盘 供应商设备封装:8-HVSON 包装:带卷 (TR) 工作温度:-40°C ~ 85°C 其它名称:935286881118PCA9553TK/02-TPCA9553TK/02-T-ND |
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