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参数资料
| 型号： | LTC3717EUH-1#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 20/20页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR STEP-DOWN SYNC 32QFN |
| 标准包装： | 73 |
| 应用： | 控制器，DDR，QDR |
| 输入电压： | 4 V ~ 36 V |
| 输出数： | 1 |
| 输出电压： | 2 V ~ 18 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-QFN 裸露焊盘（5x5） |
| 包装： | 管件 |
| 产品目录页面： | 1335 (CN2011-ZH PDF) |
LTC3717-1
TYPICAL APPLICATIO
Typical Application 1.25V/ ± 3A at 1.4MHz
C SS
0.1 μ F
D B
CMDSH-3
C C1
470pF
R C
33k
C C2
100pF
R PG
100k
RUN/SS BOOST
PGOOD TG
LTC3717-1
V RNG SW
SENSE +
I TH PGND
SENSE –
SGND BG
C B
0.22 μ F
M1
1/2 Si9802
M2
1/2 Si9802
L1
0.7 μ H
+
+
C IN
120 μ F
4V
C OUT
120 μ F
4V
V IN
2.5V
V OUT
1.25V
± 3A
C ON , 0.01 μ F
V ON
I ON
INTV CC
C VCC
4.7 μ F
DRV CC
V FB
V CC
5V
R ON
V REF
EXTV CC
1 μ F
92k
3717 TA03
C IN , C OUT : CORNELL DUBILIER ESRD121M04B
L1: TOKO A921CY-0R7M
RELATED PARTS
No R SENSE Current Mode Synchronous Step-Down Controller
PART NUMBER
LTC1625/LTC1775
LTC1628-PG
LTC1628-SYNC
LTC1709-7
LTC1709-8
LTC1735
LTC1736
LTC1772
LTC1773
LTC1778/LTC3778
LTC1874
LTC1876
LTC3413
LTC3717
DESCRIPTION
TM
Dual, 2-Phase Synchronous Step-Down Controller
Dual, 2-Phase Synchronous Step-Down Controller
High Efficiency, 2-Phase Synchronous Step-Down Controller
with 5-Bit VID
High Efficiency, 2-Phase Synchronous Step-Down Controller
High Efficiency, Synchronous Step-Down Controller
High Efficiency, Synchronous Step-Down Controller with 5-Bit VID
SOT-23 Step-Down Controller
Synchronous Step-Down Controller
Wide Operating Range, No R SENSE Step-Down Synchronous Controllers
Dual, Step-Down Controller
2-Phase, Dual Synchronous Step-Down Controller with
Step-Up Regulator
Monolithic DDR Memory Termination Regulator
Wide Operating Range, No R SENSE Step-Down Synchronous Controllers
for DDR Memory Termination
COMMENTS
97% Efficiency; No Sense Resistor; 99% Duty Cycle
Power Good Output; Minimum Input/Output Capacitors;
3.5V ≤ V IN ≤ 36V
Synchronizable 150kHz to 300kHz
Up to 42A Output; 0.925V ≤ V OUT ≤ 2V
Up to 42A Output; VRM 8.4; 1.3V ≤ V OUT ≤ 3.5V
Burst Mode TM Operation; 16-Pin Narrow SSOP;
3.5V ≤ V IN ≤ 36V
Mobile VID; 0.925V ≤ V OUT ≤ 2V; 3.5V ≤ V IN ≤ 36V
Current Mode; 550kHz; Very Small Solution Size
Up to 95% Efficiency, 550kHz, 2.65V ≤ V IN ≤ 8.5V,
0.8V ≤ V OUT ≤ V IN , Synchronizable to 750kHz
4V ≤ V IN ≤ 36V, True Current Mode Control,
2% to 90% Duty Cycle
Current Mode; 550kHz; Small 16-Pin SSOP, V IN < 9.8V
2.6V ≤ V IN ≤ 36V, Power Good Output,
300kHz Operation
90% Efficiency, ± 3A Output, 2MHz Operation
4V ≤ V IN ≤ 36V, True Current Mode Control,
2% to 90% Duty Cycle, 16-Pin SSOP, No R SENSE
Burst Mode is a registered trademark of Linear Technology Corporation.
sn37171 37171fs
20 Linear Technology Corporation
(408) 432-1900 q FAX: (408) 434-0507 www.linear.com
1630 McCarthy Blvd., Milpitas, CA 95035-7417
q
LT/TP 0603 1K ? PRINTED IN USA
? LINEAR TECHNOLOGY CORPORATION 2003
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