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参数资料
| 型号： | LT3757IDD#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/36页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BST FLYBK INV 10DFN |
| 产品培训模块： | LT3757 and LT3758 - Boost, Flyback, SEPIC and Inverting Controllers |
| 标准包装： | 121 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 1MHz |
| 电源电压： | 2.9 V ~ 40 V |
| 降压： | 无 |
| 升压： | 是 |
| 回扫： | 是 |
| 反相： | 是 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 10-WFDFN 裸露焊盘 |
| 包装： | 管件 |
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LT3757/LT3757A
Boost, Flyback, SEPIC and
Inverting Controller
Wide Input Voltage Range: 2.9V to 40V
Positive or Negative Output Voltage Programming
Current Mode Control Provides Excellent Transient
Programmable Operating Frequency (100kHz to
Synchronizable to an External Clock
Low Shutdown Current < 1μA
Internal 7.2V Low Dropout Voltage Regulator
Programmable Input Undervoltage Lockout with
Programmable Soft-Start
Small 10-Lead DFN (3mm × 3mm) and Thermally
Automotive and Industrial Boost, Flyback, SEPIC and
Telecom Power Supplies
Portable Electronic Equipment
FEATURES
n
n
with a Single Feedback Pin
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Response
n
1MHz) with One External Resistor
n
n
n
n
Hysteresis
n
n
Enhanced 10-Pin MSOP Packages
APPLICATIONS
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Inverting Converters
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TYPICAL APPLICATION
High Efficiency Boost Converter
DESCRIPTION
The LT ? 3757/LT3757A are wide input range, current
mode, DC/DC controllers which are capable of generating
either positive or negative output voltages. They can be
configured as either a boost, flyback, SEPIC or inverting
converter. The LT3757/LT3757A drive a low side external
N-channel power MOSFET from an internal regulated 7.2V
supply. The fixed frequency, current-mode architecture
results in stable operation over a wide range of supply
and output voltages.
The operating frequency of LT3757/LT3757A can be set
with an external resistor over a 100kHz to 1MHz range,
and can be synchronized to an external clock using the
SYNC pin. A low minimum operating supply voltage of
2.9V, and a low shutdown quiescent current of less than
1μA, make the LT3757/LT3757A ideally suited for battery-
operated systems.
The LT3757/LT3757A feature soft-start and frequency
foldback functions to limit inductor current during start-up
and output short-circuit. The LT3757A has improved load
transient performance compared to the LT3757.
L , LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks
and No R SENSE and ThinSOT are trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.
Efficiency
V IN
8V TO 16V
10μF
25V
X5R
200k
43.2k
V IN
SHDN /UVLO
LT3757
SYNC
GATE
10μH
226k
V OUT
24V
2A
100
90
80
70
V IN = 8V
V IN = 16V
4.7μF
41.2k
300kHz
0.1μF
RT
SS
V C
22k
SENSE
FBX
GND INTV CC
10V
6.8nF X5R
0.01
+
16.2k
47μF
35V
× 2
10μF
25V
X5R
60
50
40
30
0.001
0.01
0.1 1
10
OUTPUT CURRENT (A)
3757 TA01b
3757 TA01a
3757afd
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3757IDD-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Boost, Flyback, SEPIC and Inverting Controller |
| LT3757IMSE | 制造商:Linear Technology 功能描述:DC DC Cntrlr Single-OUT Flyback Controller 2.9V to 40V Input 10-Pin MSOP EP 制造商:Linear Technology 功能描述:CONTROLLER |
| LT3757IMSE#PBF | 功能描述:IC REG CTRLR PWM CM 10-MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| LT3757IMSE#TRPBF | 功能描述:IC REG CTRLR PWM CM 10-MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| LT3757IMSEPBF | 制造商:Linear Technology 功能描述:Boost Flyback SEPIC Controller MSOP10EP |
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