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参数资料
| 型号： | LT3689IUD-5#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 34/34页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK 5V 0.7A 16QFN |
| 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： | 5V |
| 输入电压： | 3.6 V ~ 36 V |
| PWM 型： | 电流模式，Burst Mode? |
| 频率 - 开关： | 500kHz ~ 2MHz |
| 电流 - 输出： | 700mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 16-QFN-EP（3x3） |
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LT3689/LT3689-5
TYPICAL APPLICATION
1.8V Step-Down Converter with System Reset Generated by
Watchdog Timing or Output Voltage Failure
V IN
3.6V TO 16V C1
TRANSIENT TO 27V 1μF
WINDOW TIMEOUT
W /T
V IN
EN/UVLO
OUT
BST
μP
L1: WE-PD2: 7447745047
D1: MBRM140
C1, C2, C3: X7R OR X5R
I/O
RESET
WATCHDOG_DEFEAT
C6 C5
10nF 68nF
t WDU = 182ms t RST = 157ms
WDE
WDI
WDO
RST
C WDT
C POR
LT3689
GND
SW
DA
FB
RT
SYNC
f SW = 900kHz
C2
0.1μF
D1
R T
14.7k
3689 TA05
L1
4.7μH
C4
15pF
R1
127k
R2
102k
1.8V
700mA
C3
47μF
RELATED PARTS
PART NUMBER DESCRIPTION
COMMENTS
60V, 1.2A (I OUT ), 200kHz, High Efficiency Step-Down DC/DC
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36V, 1.4A (I OUT ), 500kHz High Efficiency Step-Down DC/DC
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and TSSOP-16E Packages
V IN : 3.6V to 36V, V OUT(MIN) = 1.2V, I Q = 1.9mA, I SD <1μA, MS8E Package
LT1976/LT1977 60V, 1.2A (I OUT ), 200kHz/500kHz, High Efficiency Step-Down V IN : 3.3V to 60V, V OUT(MIN) = 1.20V, I Q = 100μA, I SD <1μA, TSSOP-16E
DC/DC Converter with Burst Mode Operation Package
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DC/DC Converter with Burst Mode Operation Package
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DFN-10 and TSSOP-16E Packages
V IN : 3.6V to 38V, V OUT(MIN) = 0.78V, I Q = 70μA, I SD <1μA, 3mm × 3mm
DFN-10 and MSOP-10E Packages
V IN : 3.6V to 34V, V OUT(MIN) = 1.26V, I Q = 50mA, I SD <1μA, 3mm × 3mm
DFN-10 and MSOP-10E Packages
V IN : 3.6V to 36V, V OUT(MIN) = 0.8V, I Q = 1.9mA, I SD <1μA, 2mm × 3mm
DFN-6 Package
V IN : 3.6V to 36V, V OUT(MIN) = 0.8V, I Q = 2.5mA, I SD <10μA, 3mm × 3mm
DFN-10 Package
V IN : 3.6V to 34V, V OUT(MIN) = 0.78V, I Q = 2mA, I SD = 2μA, 3mm × 3mm
DFN-8 and MSOP-8E Packages
V IN : 3.6V to 36V, V OUT(MIN) = 0.8V, I Q = 2.5mA, I SD = 10μA, TSSOP-16
and TSSOP-16E Packages
V IN : 3.7V to 37V, V OUT(MIN) = 0.8V, I Q = 4.6mA, I SD = 1μA, 4mm × 4mm
QFN-24 and TSSOP-16E Packages
36V, 60V MAX , 1A, 2.2MHz High Efficiency Micropower Step- V IN : 3.6V to 36V, V OUT(MIN) = 0.8V, I Q = 75mA, I SD <1μA, 3mm × 3mm
Down DC/DC Converter DFN-12 Package
34V with Transient Protection to 36V, 2A (I OUT ), 2.8MHz,
High Efficiency Step-Down DC/DC Converter
36V with Transient Protection to 60V, 2A (I OUT ), 2.4MHz,
High Efficiency Step-Down DC/DC Converter
V IN : 3.6V to 34V, V OUT(MIN) = 1.26V, I Q = 850μA, I SD <1μA, 3mm × 3mm
DFN-10 and MSOP-10E Packages
V IN : 3.6V to 38V, V OUT(MIN) = 0.78V, I Q = 70μA, I SD <1μA, 3mm × 3mm
DFN-10 and MSOP-10E Packages
3689fe
(408) 432-1900 ● FAX : (408) 434-0507 www.linear.com/LT3689
34
Linear Technology Corporation
Formore
1630 McCarthy Blvd., Milpitas, CA 95035-7417 information www.linear.com/LT3689
●
LT 0613 REV E ? PRINTED IN USA
? LINEAR TECHNOLOGY CORPORATION 2010
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