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| 型号： | LTC3703EGN-5#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/32页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BST PWM VM 16-SSOP |
| 标准包装： | 100 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 330kHz |
| 占空比： | 96% |
| 电源电压： | 4.1 V ~ 15 V |
| 降压： | 是 |
| 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 ~ 85°C |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 包装： | 管件 |
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LTC3703-5
60V Synchronous
Switching Regulator Controller
FEATURES
DESCRIPTIO
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High Voltage Operation: Up to 60V
Large 1 ? Gate Drivers (with 5V Supply)
No Current Sense Resistor Required
Step-Up or Step-Down DC/DC Converter
Dual N-Channel MOSFET Synchronous Drive
Excellent Line and Load Transient Response
Programmable Constant Frequency: 100kHz to
600kHz
± 1% Reference Accuracy
Synchronizable up to 600kHz
Selectable Pulse Skip Mode Operation
Low Shutdown Current: 25 μ A Typ
Programmable Current Limit
Undervoltage Lockout
Programmable Soft-Start
16-Pin Narrow SSOP and 28-Pin SSOP Packages
The LTC ? 3703-5 is a synchronous step-down switching
regulator controller that can directly step-down voltages
from up to 60V input, making it ideal for telecom and au-
tomotive applications. The LTC3703-5 drives external logic
level N-channel MOSFETs using a constant frequency (up
to 600kHz), voltage mode architecture.
A precise internal reference provides 1% DC accuracy. A
high bandwidth error amplifier and patented* line feed
forward compensation provide very fast line and load
transient response. Strong 1 ? gate drivers allow the
LTC3703-5 to drive multiple MOSFETs for higher current
applications. The operating frequency is user program-
mable from 100kHz to 600kHz and can also be synchro-
nized to an external clock for noise-sensitive applications.
Current limit is programmable with an external resistor
and utilizes the voltage drop across the synchronous
APPLICATIO S
MOSFET to eliminate the need for a current sense resistor.
For applications requiring up to 100V operation, refer to
■
48V Telecom and Base Station Power Supplies
the LTC3703 data sheet.
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Networking Equipment, Servers
Automotive and Industrial Control
PARAMETER
Maximum V IN
LTC3703-5
60V
LTC3703
100V
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
*U.S. Patent Numbers: 5408150, 5055767, 6677210, 5847554, 5481178, 6304066, 6580258;
Others Pending.
MOSFET Gate Drive
V CC UV +
V CC UV –
4.5V to 15V
3.7V
3.1V
9.3V to 15V
8.7V
6.2V
TYPICAL APPLICATIO
High Efficiency High Voltage Step-Down Converter
V CC
5V
+
22 μ F
MMDL770T1
V IN
6V TO 60V
100
Efficiency vs Load Current
30k
MODE/SYNC V IN
FSET BOOST
+
22 μ F
× 2
95
V IN = 12V
V IN = 24V
10k
Si7850DP
1000pF
21.5k
1%
470pF
12k
COMP TG
LTC3703-5
FB SW
I MAX VCC
10 ?
0.1 μ F
8 μ H
270 μ F
+
V OUT
5V
5A
90
85
V IN = 42V
INV
DRV CC
16V
100 ?
113k
1%
0.1 μ F
RUN/SS
GND
BG
BGRTN
10 μ F
1 μ F
Si7850DP
D1
MBR1100
80
0
1
2 3
LOAD CURRENT (A)
4
5
2200pF
37035 TA04
37053 TA04b
37035fa
1
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相关代理商/技术参数 |
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| LTC3703EGNPBF | 制造商:Linear Technology 功能描述:100V Synch Sw. Reg. Controller SSOP16 |
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| LTC3703HGN | 制造商:Linear Technology 功能描述:DC DC Cntrlr Single-OUT Sync Step Down 9.3V to 100V Input 16-Pin SSOP N |
| LTC3703HGN#PBF | 功能描述:IC REG CTRLR BST PWM VM 16-SSOP 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) |
| LTC3703HGN#TRPBF | 功能描述:IC REG CTRLR BST PWM VM 16-SSOP 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) |
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