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參數(shù)資料
| 型號： | LT3724IFE |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 0.3 A SWITCHING CONTROLLER, 220 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | 4.4 MM, PLASTIC, TSSOP-16 |
| 文件頁數(shù)： | 19/24頁 |
| 文件大?。?/td> | 240K |
| 代理商： | LT3724IFE |
LT3724
19
3724f
Figure 9. LT3724 Layout Diagram (See PCB Layout Checklist).
Minimum On-Time Considerations
(Step-Down Converters)
Minimum on-time (t
TG(ON)
) is the least amount of time that
the LT3724 is capable of turning the MOSFET on and then
off again. It is determined by internal timing delays and the
gate charge of the MOSFET. Applications with high input
to output differential voltages operate at low duty cycles
and may approach this minimum on-time, typically 300nS.
The LT3724 switching frequency is internally set to 200kHz,
APPLICATIOU
W
U
U
therefore, the minimum duty cycle of the MOSFET switch
is 6%. When the duty cycle needs to be less than 6% the
output will stay regulated, but cycle skipping may occur.
Cycle skipping results in an increase in inductor ripple
current. If it is important that cycle skipping does not
occur, follow this guideline which takes into account
worst case f
SW
and t
TG(ON)
:
V
IN(MAX)
≤
9 V
OUT
This is only an issue for supplies with V
OUT
< 7V.
4
C
BOOST
R
SENSE
R
A
R
C
R2
R1
R
B
R
CSS
V
IN–
V
IN+
V
IN
SHDN
C
SS
BURST_EN
V
FB
V
C
SGND
BOOST
TG
SW
V
CC
PGND
SENSE
+
SENSE
–
+
–
L1
M1
D3
3724 F06
LT3724
1
3
5
6
7
8
16
15
14
12
11
10
9
D2
D1
C
VCC
C
IN
C
OUT
V
OUT
C
C2
C
C1
C
SS
17
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT3724IFE#PBF | 功能描述:IC REG CTRLR BST INV PWM 16TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:50% 電源電壓:9 V ~ 10 V 降壓:無 升壓:是 回掃:是 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 85°C 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 包裝:帶卷 (TR) |
| LT3724IFE#PBF | 制造商:Linear Technology 功能描述:DC-DC CONVERTER BUCK 200KHZ 制造商:Linear Technology 功能描述:DC-DC CONVERTER, BUCK, 200KHZ, TSSOP-16 |
| LT3724IFE#TRPBF | 功能描述:IC REG CTRLR BST INV PWM 16TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,500 系列:PowerWise® PWM 型:控制器 輸出數(shù):1 頻率 - 最大:1MHz 占空比:95% 電源電壓:2.8 V ~ 5.5 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:6-WDFN 裸露焊盤 包裝:帶卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名稱:LM1771SSDX |
| LT3724IFE-PBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:High Voltage, Current Mode Switching Regulator Controller |
| LT3724IFE-TRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:High Voltage, Current Mode Switching Regulator Controller |
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