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参数资料
| 型号： | LT1616ES6#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK 3.3V/5V 0.6A SOT23-6 |
| 标准包装： | 2,500 |
| 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： | 带卷 (TR) |
| 供应商设备封装： | SOT-23-6 |
LT1616
600mA, 1.4MHz Step-Down
Switching Regulator
in SOT-23
FEATURES
DESCRIPTIO
s
s
s
s
s
s
s
s
s
Wide Input Range: 3.6V to 25V
5V at 400mA from 7V to 25V Input
3.3V at 400mA from 4.7V to 25V Input
Fixed Frequency 1.4MHz Operation
Uses Tiny Capacitors and Inductors
Internally Compensated
Low Shutdown Current: <1 μ A
Low V CESAT Switch: 220mV at 300mA
Tiny 6-Lead SOT-23 Package
The LT ? 1616 is a current mode PWM step-down DC/DC
converter with internal 0.6A power switch, packaged in a
tiny 6-lead SOT-23. The wide input range of 3.6V to 25V
makes the LT1616 suitable for regulating a wide variety of
power sources, from 4-cell batteries and 5V logic rails to
unregulated wall transformers and lead-acid batteries. Its
high operating frequency allows the use of tiny, low cost
inductors and ceramic capacitors. With its internal com-
pensation eliminating additional components, a complete
400mA step-down regulator fits onto 0.15 square inches
Wall Transformer Regulation
Local Logic Supply Conversion:
Distributed Supply Regulation
Digital Cameras
Battery-Powered Equipment
APPLICATIO S
s
s
12V to 5V
12V or 5V to 3.3V, 2.5V or 1.8V
s
s
s
TYPICAL APPLICATIO
3.3V Step-Down Converter
of PC board area.
The constant frequency current mode PWM architecture
and stable operation with ceramic capacitors results in
low, predictable output ripple. Current limiting provides
protection against shorted outputs. The low current (<1 μ A)
shutdown provides complete output disconnect, enabling
easy power management in battery-powered systems.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Efficiency
V IN
4.5V TO 25V
OFF ON
5
4
V IN BOOST
LT1616
SHDN SW
1
6
D2
C3
0.01 μ F
L1
10 μ H
V OUT
3.3V
100
90
80
V IN = 5V
V IN = 12V
GND
2
FB
3
R1
16.5k
D1
300mA: V IN = 4.5V TO 25V
400mA: V IN = 4.7V TO 25V
70
V IN = 20V
C1
1 μ F
R2
10k
C2
10 μ F
60
50
C1: TAIYO-YUDEN TMK316BJ105
C2: TAIYO-YUDEN JMK316BJ106ML
D1: ON SEMICONDUCTOR MBR0530
D2: 1N4148
1616 TA01
40
30
L1: SUMIDA CR43-100
0
100
200
300 400
500
LOAD CURRENT (mA)
1616 G02
1
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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 |
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