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参数资料
| 型号： | LT1616ES6#TRMPBF |
| 厂商： | Linear Technology |
| 文件页数： | 5/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK 3.3V/5V 0.6A SOT23-6 |
| 标准包装： | 1 |
| 类型： | 降压（降压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 3.3V，5V |
| 输入电压： | 3.6 V ~ 25 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1.4MHz |
| 电流 - 输出： | 600mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 包装： | 标准包装 |
| 供应商设备封装： | SOT-23-6 |
| 产品目录页面： | 1328 (CN2011-ZH PDF) |
| 其它名称： | LT1616ES6#TRMPBFDKR |
LT1616
BLOCK DIAGRA
V IN
5
INT REG
1 BOOST
SHDN
4
AND
UVLO
SLOPE
COMP
Σ
R
Q
OSC
FREQUENCY
FOLDBACK
V C
g m
S
Q
DRIVER
Q1
6 SW
1.25V
OPERATIO
2
GND
(Refer to Block Diagram)
3
FB
1616BD
The LT1616 is a constant frequency, current mode Buck
regulator. The 1.4MHz oscillator enables an RS flip-flop,
turning on the internal 600mA power switch Q1. An ampli-
fier and comparator monitor the current flowing between
the V IN and SW pins, turning the switch off when this current
reaches a level determined by the voltage at V C . An error
amplifier measures the output voltage through an external
resistor divider tied to the FB pin. This amplifier servos the
switch current to regulate the FB pin voltage to 1.25V. An
active clamp on the V C node provides current limit.
An internal regulator provides power to the control cir-
cuitry. This regulator includes an undervoltage lockout to
prevent switching when V IN is less than ~ 3.5V. The
SHDN pin is used to place the LT1616 in shutdown,
disconnecting the output and reducing the input current
to less than 1 μ A.
The switch driver operates from either the input or from
the BOOST pin. An external capacitor and diode are used
to generate a voltage at the BOOST pin that is higher than
the input supply. This allows the driver to fully saturate the
internal bipolar NPN power switch for efficient operation.
The oscillator reduces the LT1616’s operating frequency
when the voltage at the FB pin is low. This frequency
foldback helps to control the output current during start-
up and overload.
5
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相关代理商/技术参数 |
参数描述 |
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| LT1617 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Inverting Micropower DC/DC Converter with Schottky in ThinSOT Package |
| LT1617-1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Inverting Micropower DC/DC Converter with Schottky in ThinSOT Package |
| LT1617ES5 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower Inverting DC/DC Converters in SOT-23 |
| LT1617ES5#PBF | 制造商:Linear Technology 功能描述: 制造商:Linear Technology 功能描述:SP-SWREG/Monolithic, CUT TAPE Micropower Inverting DC/DC Converters in SOT-23 制造商:Linear Technology 功能描述:IC, DC/DC CONVERTER, 5-SOT-23, Primary Input Voltage:12V, No. of Outputs:1, Output Voltage:34V, Output Current:350mA, No. of Pins:5, Operating Temperature Min:-40C, Operating Temperature Max:85C, MSL:MSL 1 - Unlimited , RoHS Compliant: Yes |
| LT1617ES5#PBF | 制造商:Linear Technology 功能描述:IC DC/DC CONVERTER 制造商:Linear Technology 功能描述:IC, DC/DC CONVERTER, 5-SOT-23 |
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