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参数资料
| 型号： | LT3580MPMS8E#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 2.8 A SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | LEAD FREE, PLASTIC, MSOP-8 |
| 文件页数： | 24/28页 |
| 文件大小： | 289K |
| 代理商： | LT3580MPMS8E#TRPBF |
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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
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3581 | 制造商:LINER 制造商全称: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 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
| LT3581EDE#TRPBF | 功能描述:IC REG MULTI CONFIG ADJ 14DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘 |
| LT3581EDE-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:3.3A Boost/Inverting DC/DC Converter with Fault Protection |
| LT3581EDE-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:3.3A Boost/Inverting DC/DC Converter with Fault Protection |
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