- 您现在的位置：买卖IC网 > PDF目录1829 > LTC3520EUF#PBF (Linear Technology)IC REG BUCK BOOST SYNC ADJ 24QFN PDF资料下载
参数资料
| 型号： | LTC3520EUF#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 9/24页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK BOOST SYNC ADJ 24QFN |
| 标准包装： | 91 |
| 类型： | 降压（降压），升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 0.8 V ~ 5.5 V |
| 输入电压： | 2.2 V ~ 5.5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 100kHz ~ 2MHz |
| 电流 - 输出： | 600mA，1A |
| 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： | 24-WFQFN 裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 24-QFN 裸露焊盘（4x4） |
| 产品目录页面： | 1334 (CN2011-ZH PDF) |
LTC3520
PIN FUNCTIONS
SS2 (Pin 13): Buck Converter Soft-Start Pin. This pin must
be connected to a soft-start capacitor. The value of the
between FB1 and ground and R2 is a resistor between
FB1 and the buck-boost output voltage:
V OUT = 0 . 782 V ? 1 +
capacitordeterminesthedurationofthesoft-startperiod.
For information on choosing the value of this capacitor, see
the Applications Information section of this datasheet.
?
?
R2 ?
R 1 ? ?
= 0 . 790 V ? 1 +
? R 2 ?
R 1 ? ?
?
FB2 (Pin 14): Feedback Voltage for the Buck Converter.
This pin is derived from a resistor divider on the buck
output voltage. The buck output voltage is given by the
following equation where R1 is a resistor between FB2
and ground and R2 is a resistor between FB2 and the
buck output voltage:
V OUT
V C1 (Pin 15): Buck-Boost Error Ampli?er Output. A fre-
quency compensation network is connected to FB1 to
compensate the loop. During Burst Mode operation, V C1
is driven internally by a clamp circuit.
SGND (Pin 16): Small Signal Ground. This pin is used
as a ground reference for the internal circuitry of the
LTC3520.
SS1 (Pin 17): Buck-Boost Converter Soft-Start Pin. This
pin must be connected to a soft-start capacitor. The value
of the capacitor determines the duration of the soft-start
period. For information on choosing the value of this
capacitor, see the Applications Information section of
this datasheet.
FB1 (Pin 18): Feedback Voltage for the Buck-Boost Con-
verter. This pin is derived from a resistor divider on the
buck-boost output voltage. The buck-boost output voltage
is given by the following equation where R1 is a resistor
V OUT1 (Pin 19): Buck-Boost Output Voltage Node. This
pin should be connected to a low ESR buck-boost output
capacitor. The capacitor should be placed as close to the
IC as possible and should have a short return path to
ground.
SW1B (Pin 20): Buck-Boost Switch Node. This pin must
be connected to one side of the buck-boost inductor.
PGND1 (Pin 21): High Current Ground Connection for
the Buck-Boost NMOS Power Devices. The PCB trace
connecting this pin to ground should be made as short
and wide as possible.
SW1A (Pin 22): Buck-Boost Switch Node. This pin must
be connected to one side of the buck-boost inductor.
PV IN1 (Pin 23), PV IN3 (Pin 24): High Current Power Sup-
ply Connections Used to Power the Buck-Boost Converter
Power Switch A. These pins should be connected together
and bypassed by a 22μF or larger ceramic capacitor. The
bypass capacitor should be placed as close to the pin as
possible and should have a short return path to ground.
Pins PV IN1 , PV IN2 , PV IN3 , and SV IN must be connected
together in the application circuit.
Exposed Pad (Pin 25): Ground. The Exposed Pad must be
electrically connected to ground and soldered to the PCB.
Pins PGND1, PGND2, SGND, and the Exposed Pad must
be connected together in the application circuit.
3520fa
9
相关PDF资料 |
PDF描述 |
|---|---|
| LTC3521IFE#TRPBF | IC REG BUCK BST SYNC ADJ 20TSSOP |
| LTC3522EUD#TRPBF | IC REG BUCK BOOST SYNC ADJ 16QFN |
| LTC3523EUD-2#TRPBF | IC REG BUCK BOOST SYNC ADJ 16QFN |
| LTC3525ESC6-3.3#TRPBF | IC REG BST SYNC 3.3V 0.4A SC70-6 |
| LTC3526BEDC#TRPBF | IC REG BOOST SYNC ADJ 0.5A 6DFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3520EUF-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Synchronous 1A Buck-Boost and 600mA Buck Converters |
| LTC3520IUF#PBF | 功能描述:IC REG BUCK BOOST SYNC ADJ 24QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 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:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
| LTC3520IUF#TRPBF | 功能描述:IC REG BUCK BOOST SYNC ADJ 24QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 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:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
| LTC3521 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Wide VIN, 1A Buck-Boost DC/DC and Dual 600mA Buck DC/DC Converters |
| LTC3521EFE#PBF | 功能描述:IC REG BUCK BST SYNC ADJ 20TSSOP 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 |
发布紧急采购，3分钟左右您将得到回复。