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参数资料
| 型号： | LT3956EUHE#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, PQCC36 |
| 封装： | 5 X 6 MM, LEAD FREE, PLASTIC, QFN-36 |
| 文件页数： | 14/20页 |
| 文件大小： | 1424K |
| 代理商： | LT3956EUHE#TRPBF |
LT3956
3956f
elecTrical characTerisTics The
l
denotes the specifications which apply over the full operating temp-
erature range, otherwise specifications are at TA = 25°C. VIN = 24V, EN/UVLO = 24V, CTRL = 2V, PWM = 5V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
SW Pin Leakage
SW = 48V
5
10
A
SW Pin Current Limit
l
3.3
3.9
4.6
A
SW Pin Voltage Drop
I(SW) = 2A
220
mV
SS Pull-Up Current
Current Out of Pin
8
10
13
A
Error Amplifier
Full-Scale Current Sense Threshold ( V(ISP–ISN))
FB = 0V, ISP = 48V, CTRL ≥ 1.2V
l
240
250
257
mV
Current Sense Threshold at CTRL = 1V ( V(ISP–ISN))
CTRL = 1V, FB = 0V, ISP = 48V
l
217
225
231
mV
Current Sense Threshold at CTRL = 0.5V ( V(ISP–ISN))
CTRL = 0.5V
l
96
100
103
mV
Current Sense Threshold at CTRL = 0.1V ( V(ISP–ISN))
CTRL = 0.1V, FB = 0V, ISP = 48V
l
–2.5
0
4.5
mV
CTRL Range for Current Sense Threshold Adjustment
0
1.1
V
CTRL Input Bias Current
Current Out of Pin, CTRL = 0V
50
100
nA
Current Sense Amplifier Input Common Mode
Range ( VISN)
2.9
80
V
ISP/ISN Short-Circuit Threshold ( V(ISP–ISN))
ISN = 0V
300
335
370
mV
ISP/ISN Short-Circuit Fault Sensing Common Mode
Range ( VISN)
0
3
V
ISP/ISN Input Bias Current (Combined)
PWM = 5V (Active), ISP = ISN = 48V
PWM = 0V (Standby), ISP = ISN = 48V
80
0
0.1
A
LED Current Sense Amplifier gm
120
S
VC Output Impedance
1V < VC < 2V
15000
kΩ
VC Standby Input Bias Current
PWM = 0V
–20
20
nA
FB Regulation Voltage (VFB)
ISP = ISN = 0V, 48V
l
1.220
1.232
1.250
1.270
1.265
V
FB Amplifier gm
FB = VFB, ISP = ISN
480
S
FB Pin Input Bias Current
Current Out of Pin, FB = 1V
40
100
nA
FB Voltage Loop Active Threshold
VMODE Falling
VFB –
65mV
VFB –
50mV
VFB –
40mV
V
FB Overvoltage Threshold
PWMOUT Falling
VFB + 50mV VFB +
60mV
VFB +
80mV
V
Oscillator
Switching Frequency
RT = 100k
RT = 10k
l
90
925
100
1000
125
1050
kHz
SW Minimum Off-Time
170
ns
SW Minimum On-Time
200
ns
Linear Regulator
INTVCC Regulation Voltage
7
7.15
7.3
V
Dropout (VIN – INTVCC)
IINTVCC = –10mA, VIN = 7V
1
V
INTVCC Undervoltage Lockout
l
4.1
4.4
V
INTVCC Current Limit
14
17
25
mA
INTVCC Current in Shutdown
EN/UVLO = 0V, INTVCC = 7V
8
12
A
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3956IUHE#PBF | 功能描述:IC LED DVR BUCK BOOST 36-VQFN 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 |
| LT3956IUHE#TRPBF | 功能描述:IC LED DVR BUCK BOOST 36-VQFN 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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| LT3956IUHE-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:80VIN, 80VOUT Constant-Current, Constant-Voltage Converter |
| LT3957 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Wide Input Voltage Range |
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