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參數資料
| 型號： | LT3513IUHF#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3.5 A SWITCHING REGULATOR, 2220 kHz SWITCHING FREQ-MAX, PQCC38 |
| 封裝： | 5 X 7 MM, LEAD FREE, PLASTIC, MO-220WHKD, QFN-38 |
| 文件頁數： | 1/22頁 |
| 文件大?。?/td> | 374K |
| 代理商： | LT3513IUHF#TRPBF |
LT3513
1
3513fc
Typical applicaTion
DescripTion
FeaTures
applicaTions
2MHz High Current
5-Output Regulator
for TFT-LCD Panels
The LT3513 5-output adjustable switching regulator
provides power for large TFT-LCD panels. The 38-pin
5mm
× 7mm QFN device can generate a 3.3V or 5V logic
supply along with the triple output supply required for the
TFT-LCD panel. A lower voltage secondary logic supply
may also be generated with the addition of an external
NPN driven by the internal linear regulator. A step-down
regulator provides a low voltage output, VLOGIC, with up
to 1.2A of current while capable of operating from a wide
input range of 4.5V to 30V. A high power step-up con-
verter, a lower power step-up converter and an inverting
converter provide the three independent output voltages:
AVDD,VONandVOFFrequiredbytheLCDpanel.Ahigh-side
PNP provides delayed turn-on of the VON signal and can
handle up to 30mA. Protection circuitry ensures that VON
is disabled if any of the four outputs are more than 10%
below the programmed voltage.
n
Automotive TFT-LCD Displays
n
Large TFT-LCD Desktop Monitors
n
Flat Panel Televisions
n
4.5V to 30V Input Voltage Range
n
Four Integrated Switches: 2.2A Buck, 1.5A Boost,
0.25A Boost, 0.25A Inverter (Guaranteed Minimum
Current Limit)
n
External NPN LDO Driver
n
Fixed Frequency, Low Noise Outputs
n
Inductor Current Sense for Buck
n
Soft-Start for All Outputs
n
Externally Programmable VON Delay
n
Three Integrated Schottky Diodes
n
PGOOD Pin for AVDD Output Disconnect
n
PanelProtect Circuitry Disables VON Upon Fault
n
Thermally Enhanced 38-Lead 5mm
× 7mm QFN
Package
Start-Up Waveforms
AVDD 10V/DIV
RUN/SS 2V/DIV
VLOGIC 5V/DIV
IIN(AVG) 1A/DIV
VOFF 10V/DIV
VE3 20V/DIV
VON 20V/DIV
5ms/DIV
3513 TA01b
L
, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
PanelProtect, True Color PWM and ThinSOT are trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
VC1
7.5k
4.7k
2.7nF
4.7nF
10F
VLDO
3.3V
0.5A
VLOGIC
5V
0.5A
VOFF
–10V
20mA
VIN
8V TO 16V
22F
4.7H
0.22F
47nF
15nF
VON
22V
20mA
2.2F
VC3
30k
165k
232k
10k
1.5nF
VC2
VC1
GND
13k
2.2nF
VC4
VIN
VLOGIC
5V
LDOPWR
LT3513
UVLO
SW2
2.2F
FB5
FB3
BD
FB1
SENSE–
SENSE+
SW1
BOOST
BIAS
SW3
6.8H
42.2k
10k
30.1k
10k
69.8k
10H
0.47F
10k
60.4k
178k
53.6k
100k
10k
10F
10H
AVDD
8V
80mA
10F
0.47F
NFB4
D4
SW4
RUN-SS3/4
CT
RUN-SS2
RUN-SS1
VONSINK
E3
VON
VON_CLK
PGOOD
FB2
VLOGIC
5V
3513 TA01a
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相關代理商/技術參數 |
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| LT3514IFE#TRPBF | 制造商:Linear Technology 功能描述:IC REG BUCK ADJ 24TSSOP 制造商:Linear Technology 功能描述:SP-SWREG/Monolithic, Triple Step-Down Switching Regulator with 100% Duty Cycle O |
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