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參數(shù)資料
| 型號： | LT3580MPMS8E#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 2.8 A SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | LEAD FREE, PLASTIC, MSOP-8 |
| 文件頁數(shù)： | 24/28頁 |
| 文件大小： | 289K |
| 代理商： | LT3580MPMS8E#PBF |
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LT3580
5
3580fg
TYPICAL PERFORMANCE CHARACTERISTICS
SHDN Pin Current
Active/Lockout Threshold
TA = 25°C unless otherwise specified
PIN FUNCTIONS
FB (Pin 1): Positive and Negative Feedback Pin. For a
boost or inverting converter, tie a resistor from the FB pin
to VOUT according to the following equations:
R
FB =
V
OUT 1.215
()
83.3 10
6
; Boost or SEPIC Converter
R
FB =
V
OUT + 5mV
()
83.3 10
6
; Inverting Converter
VC (Pin 2): Error Amplifier Output Pin. Tie external
compensation network to this pin.
VIN (Pin 3): Input Supply Pin. Must be locally bypassed.
SW (Pin 4): Switch Pin. This is the collector of the internal
NPN Power switch. Minimize the metal trace area connec-
ted to this pin to minimize EMI.
SHDN (Pin 5): Shutdown Pin. In conjunction with the
UVLO (undervoltage lockout) circuit, this pin is used
to enable/disable the chip and restart the soft-start
sequence. Drive below 1.24V (LT3580E, LT3580I) or 1.22V
(LT3580H, LT3580MP) to disable the chip. Drive above
1.38V (LT3580E, LT3580I) or 1.40V (LT3580H, LT3580MP)
to activate chip and restart the soft-start sequence. Do
not float this pin.
RT (Pin 6): Timing Resistor Pin. Adjusts the switching
frequency. Place a resistor from this pin to ground to set
the frequency to a fixed free running level. Do not float
this pin.
SS (Pin 7): Soft-Start Pin. Place a soft-start capacitor here.
Upon start-up, the SS pin will be charged by a (nominally)
275k resistor to about 2.2V.
SYNC (Pin 8): To synchronize the switching frequency to
an outside clock, simply drive this pin with a clock. The
high voltage level of the clock needs to exceed 1.3V, and
the low level should be less 0.4V. Drive this pin to less than
0.4V to revert to the internal free running clock. See the
Applications Information section for more information.
GND (Exposed Pad Pin 9): Ground. Exposed pad must
be soldered directly to local ground plane.
SHDN VOLTAGE (V)
0
SHDN
PIN
CURRENT
(μA)
5
10
15
20
25
30
0.5
1
–50°C
1.5
2
3580 G10
100°C
20°C
SHDN VOLTAGE (V)
0
SHDN
PIN
CURRENT
(μA) 200
250
–50°C
20°C
100°C
300
15
25
3580 G11
150
100
510
20
30
50
0
TEMPERATURE (°C)
–50
1.20
SHDN
VOLTAGE
(V)
1.22
1.26
1.28
1.30
1.40
1.34
0
50
3580 G12
1.24
1.36
1.38
1.32
100
SHDN RISING
SHDN FALLING
相關(guān)PDF資料 |
PDF描述 |
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| LT3580MPMS8E#TRPBF | 2.8 A SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO8 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT3581 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:3.3A Boost/Inverting DC/DC Converter with Fault Protection |
| LT3581EDE#PBF | 功能描述:IC REG MULTI CONFIG ADJ 14DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:250 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V 輸入電壓:2.05 V ~ 6 V PWM 型:電壓模式 頻率 - 開關(guān):2MHz 電流 - 輸出:500mA 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:6-UFDFN 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:6-SON（1.45x1） 產(chǎn)品目錄頁面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2 |
| LT3581EDE#TRPBF | 功能描述:IC REG MULTI CONFIG ADJ 14DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V，1.5V，1.8V，2.5V 輸入電壓:2.7 V ~ 20 V PWM 型:- 頻率 - 開關(guān):- 電流 - 輸出:50mA 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:10-TFSOP，10-MSOP（0.118"，3.00mm 寬）裸露焊盤 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:10-MSOP 裸露焊盤 |
| LT3581EDE-PBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:3.3A Boost/Inverting DC/DC Converter with Fault Protection |
| LT3581EDE-TRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:3.3A Boost/Inverting DC/DC Converter with Fault Protection |
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