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| 型号： | LT3513IUHF#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 4/22页 |
| 文件大小： | 0K |
| 描述： | IC REG 5-OUT FOR TFT-LCD 38QFN |
| 标准包装： | 2,500 |
| 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： | 带卷 (TR) |
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
CONDITIONS
MIN
TYP
MAX
UNITS
Switch 3 (250mA BOOST)
FB3 Voltage
FB3 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
FB3 Pin Bias Current
(Note 4)
l
30
200
nA
Error Amplifier 3 Voltage Gain
250
V/V
Error Amplifier 3 Transconductance
Δ I = 10μA
220
μmhos
Switch 3 Current Limit
Switch 3 V CESAT
Switch 3 Leakage Current
BIAS Pin Current Due to SW3
Maximum Duty Cycle (SW3)
Schottky Diode Drop
(Note 6)
I SW3 = 0.2A
FB3 = 1.5V, RUN-SS1 = 0V
I SW3 = 0.2A
I = 170mA
l
0.25
84
0.3
200
0.1
18
88
900
0.38
1
A
mV
μA
mA
%
mV
Switch 4 (250mA Inverter)
NFB4 Voltage
NFB4 Voltage Line Regulation
4.5V < V IN < 30V
l
–1.205
–1.215
–1.180
0.01
–1.155
–1.145
0.03
V
V
%/V
NFB4 Pin Bias Current
(Note 4)
l
5
16
μA
Error Amplifier 4 Voltage Gain
200
V/V
Error Amplifier 4 Transconductance
Δ I = 10μA
220
μmhos
Switch 4 Current Limit
Switch 4 V CESAT
Switch 4 Leakage Current
(Note 6)
I SW4 = 0.2A
NFB4 = –1.5V, RUN-SS1 = 0V
0.25
0.3
200
0.1
0.40
1
A
mV
μA
BIAS Pin Current Due to SW4
Maximum Duty Cycle (SW4)
Schottky Diode Drop (D4)
I SW4 = 0.2A
I = 170mA
84
18
88
700
mA
%
mV
NPN LDO
FB5 Voltage
l
0.61
0.6
0.625
0.63
0.65
V
V
FB5 Pin Bias Current
Base Drive Current
LDOPWR Minimum Voltage
(Note 4)
FB5 = 0.5V
BD = 3.5V
l
6
4.5
30
8
200
10
nA
mA
V
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: The LT3513E is guaranteed to meet specified performance from
0°C to 125°C junction temperature. Specifications over the –40°C to
125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LT3513I is guarenteed over the full –40°C to 125°C operating junction
temperature range.
Note 3: The C T pin is held low until FB1, FB2, FB3 and NFB4 all ramp
above the FB threshold offset.
Note 4: Current flows out of FB1, FB3, NFB4 and FB5.
4
Note 5: Current may flow in or out of FB2. The absolute value of this test
is used.
Note 6: Current limit is guaranteed by design and/or correlation to static
test. Slope compensation reduces current limit at higher duty cycles.
Note 7: This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the internal power switch.
Note 8: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed the maximum operating junction temperature
range when overtemperature protection is active. Continuous operation
above the specified maximum operating junction temperature may impair
device reliability.
3513fc
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