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參數(shù)資料
| 型號： | LT3688IFE#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, PDSO24 |
| 封裝： | LEAD FREE, PLASTIC, TSSOP-24 |
| 文件頁數(shù)： | 23/28頁 |
| 文件大?。?/td> | 415K |
| 代理商： | LT3688IFE#TRPBF |
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LT3688
4
3688f
The
l denotes the specications which apply over the full operating
junction temperature range, otherwise specications are at TA = 25°C. VIN = 12V, unless otherwise noted. (Note 3)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
RST Pull-Up Current (Note 6)
–1.5
–2.5
μA
WDO Pull-Up Current (Note 6)
–1.5
–2.5
μA
CONFIG Low Level Input Voltage
l
0.2
V
CONFIG High Level Input Voltage
l
1.4
V
CONFIG Pin Voltage When Open
0.64
V
Maximum CONFIG Input Current in Open
State
l
±1
μA
CONFIG Pin Bias Current
VCONFIG = 0V, VIN
l
±20
μA
ELECTRICAL CHARACTERISTICS
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: Absolute Maximum Voltage at the VIN, CONFIG and EN/UVLO pins
is 36V for continuous operation.
Note 3: The LT3688 is tested under pulsed load conditions such that
TJ = TA. The LT3688E is guaranteed to meet performance specications
from 0°C to 125°C junction temperature. Specications over the –40°C
to 125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LT3688I is guaranteed over the full –40°C to 125°C operating junction
temperature range. The LT3688H is guaranteed over the full –40°C to
150°C operating junction temperature range. High junction temperatures
degrade operating lifetimes. Operating lifetime is derated at junction
temperatures greater than 125°C. The junction temperature (TJ, in °C) is
calculated from the ambient temperature (TA, in °C) and power dissipation
(PD, in Watts) according to the formula:
TJ = TA + (PD θJA), where θJA (in °C/W) is the package thermal
impedance.
Note 4: The LT3688 contains circuitry that extends the maximum duty
cycle if the BST voltage is 2V greater than the SW voltage. See the
Applications Information section for more details.
Note 5: Current limit is guaranteed by design and/or correlation to static
test. Slope compensation reduces current limit at higher duty cycles.
Note 6: The outputs of RST and WDO have a weak pull-up to VBIAS of
typically 2.5μA. However, external pull-up resistors may be used when
faster rise times are required or for VOH higher than VBIAS.
Note 7: 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
when over-temperature protection is active. Continuous operation above
the specied maximum operating junction temperature may impair device
reliability.
Note 8: All currents into pins are positive; all voltages are referenced to
GND unless otherwise specied.
TYPICAL PERFORMANCE CHARACTERISTICS
Efciency, VOUT = 5V
Efciency, VOUT = 3.3V
Efciency, VOUT = 1.8V
TA = 25°C unless otherwise noted.
LOAD CURRENT (A)
0
0.2
0.4
0.6
0.8
1
65
EFFICIENCY
(%)
85
90
80
70
75
95
3688 G01
fSW = 1MHz
VIN = 12V
LOAD CURRENT (A)
0
0.2
0.4
0.6
0.8
1
60
EFFICIENCY
(%)
80
85
75
65
70
90
3688 G02
fSW = 1MHz
VIN = 12V
LOAD CURRENT (A)
0
0.2
0.4
0.6
0.8
1
55
EFFICIENCY
(%)
75
80
70
60
65
85
3688 G03
fSW = 500kHz
VIN = 12V
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相關代理商/技術參數(shù) |
參數(shù)描述 |
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| LT3688IUF#PBF | 功能描述:IC REG BUCK ADJ 0.8A DL 24QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 產(chǎn)品培訓模塊:MIC23xxx HyperLight Load™ Regulators 標準包裝:5,000 系列:HyperLight Load® 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.8V 輸入電壓:2.7 V ~ 5.5 V PWM 型:混合物 頻率 - 開關:4MHz 電流 - 輸出:2A 同步整流器:是 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:8-VFDFN 裸露焊盤，8-MLF? 包裝:帶卷 (TR) 供應商設備封裝:8-MLF?（2x2） 產(chǎn)品目錄頁面:1094 (CN2011-ZH PDF) 其它名稱:576-3303-2 |
| LT3688IUF#TRPBF | 功能描述:IC REG BUCK ADJ 0.8A DL 24QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 設計資源:Design Support Tool 標準包裝:1 系列:- 類型:升壓（升壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開關:- 電流 - 輸出:100mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-5 細型，TSOT-23-5 包裝:剪切帶 (CT) 供應商設備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT |
| LT3688IUFPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual 800mA Step-Down Switching Regulator with Power-On Reset |
| LT3689 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:36V 500mA Step-Down Regulator and 200mA LDO |
| LT3689-5 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:700mA Step-Down Regulator with Power-On Reset and Watchdog Timer |
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