参数资料
| 型号： | LT3513IUHF#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/22页 |
| 文件大小： | 0K |
| 描述： | IC REG 5-OUT FOR TFT-LCD 38QFN |
| 标准包装： | 52 |
| 应用： | 转换器，TFT，LCD |
| 输入电压： | 4.5 V ~ 30 V |
| 输出数： | 5 |
| 输出电压： | 0.8 V ~ 40 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 38-WFQFN 裸露焊盘 |
| 供应商设备封装： | 38-QFN（5x7） |
| 包装： | 管件 |
| 产品目录页面： | 1332 (CN2011-ZH PDF) |
LT3513
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specification s are at T A = 25°C. V IN = 12V, BIAS = 3V, unle ss otherwise noted.
PARAMETER
FB Threshold Offset to Begin C T Charge
C T Pin Current Source
C T Threshold to Power V ON
V ON Switch Drop
CONDITIONS
(Note 3)
All FB Pins = 1.5V, C T = 0.35V
All FB Pins = 1.5V
V ON Current = 30mA
MIN
90
16
1
TYP
125
20
1.1
200
MAX
160
25
1.2
400
UNITS
mV
μA
V
mV
Maximum V ON Current
V E3 = 30V
l
30
50
mA
V ON_CLK Input Voltage High
V ON_CLK Input Voltage Low
1.5
0.3
V
V
V ONSINK Voltage On
V ONSINK Current = 1μA
l
1.2
V
Master Oscillator Frequency
Foldback Switching Frequency
UVLO Pin Threshold
UVLO Pin Hysteresis Current
PGOOD Threshold Offset
FB2 = 0V, FB3 = 0V, NFB4 = 0V
UVLO Pin Voltage Rising
V UVLO = 1V
l
1.90
1.80
3.4
90
2
200
1.25
3.9
125
2.12
2.22
4.5
160
MHz
MHz
kHz
V
μA
mV
PGOOD Sink Current
PGOOD Pin Leakage
PGOOD Connected to 40V Through 100k
V PGOOD = 40V
4
1
mA
μA
Switch 1 (2.2A Buck)
FB1 Voltage
FB1 Voltage Line Regulation
4.5V < V IN < 30V
l
1.215
1.205
1.235
0.01
1.255
1.265
0.03
V
V
%/V
FB1 Pin Bias Current
(Note 4)
l
30
200
nA
Error Amplifier 1 Voltage Gain
250
V/V
Error Amplifier 1 Transconductance
Δ I = 10μA
220
μmhos
Maximum Duty Cycle
l
75
85
%
Switch 1 Current Limit
Switch 1 V CESAT
Switch 1 Leakage Current
Minimum BOOST Voltage Above SW1 Pin
BOOST Pin Current
BOOST Schottky Diode Drop
Duty Cycle = 35% (Note 6)
I SW = 1.5A
FB1 = 1.5V, RUN-SS1 = 0V
I SW = 1.5A (Note 7)
I SW = 1.5A
I = 170mA
2.2
3
430
0.1
1.8
30
700
3.5
10
2.5
50
A
mV
μA
V
mA
mV
Switch 2 (1.5A BOOST)
FB2 Voltage
FB2 Voltage Line Regulation
4.5V < V IN < 30V
l
1.20
1.19
1.22
0.01
1.24
1.25
0.03
V
V
%/V
FB2 Pin Bias Current
(Note 5)
l
30
200
nA
Error Amplifier 2 Voltage Gain
250
V/V
Error Amplifier 2 Transconductance
Δ I = 10μA
220
μmhos
Switch 2 Current Limit
Switch 2 V CESAT
Switch 2 Leakage Current
BIAS Pin Current Due to SW2
Maximum Duty Cycle (SW2)
(Note 6)
I SW2 = 1.2A
FB2 = 1.5V, RUN-SS1 = 0V
I SW2 = 1.2A
l
1.5
75
1.85
360
0.1
45
90
2.4
1
A
mV
μA
mA
%
3513fc
3
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