- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385501 > LT1611CS5 (LINEAR TECHNOLOGY CORP) Isolated Flyback Switching Regulator with 9V Output PDF資料下載
參數(shù)資料
| 型號： | LT1611CS5 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Isolated Flyback Switching Regulator with 9V Output |
| 中文描述： | 0.8 A SWITCHING REGULATOR, 1800 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封裝： | PLASTIC, SC-74A, SOT-23, 5 PIN |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 263K |
| 代理商： | LT1611CS5 |
9
LT1611
OPERATIOU
Start-Up/Soft-Start
The LT1611, starting from V
OUT
= 0V, reaches final voltage
in approximately 450
μ
s after SHDN is pulled high, with
C
OUT
= 22
μ
F, V
IN
= 5V and V
OUT
= –5V. Charging the output
capacitor at this speed requires an inrush current of over
1A. If a longer start-up time is acceptable, a soft-start
circuit consisting of R
SS
and C
SS
, as shown in Figure 14,
can be used to limit inrush current to a lower value. Figure
15 pictures V
OUT
and input current, starting into a 33
load, with R
SS
of 33k
and C
SS
of 33nF. Input current,
V
IN
V
IN
5V
V
SS
V
OUT
V
–5V
1611 F14
SW
L1A
22
μ
H
CURRENT
PROBE
L1B
22
μ
H
D1
GND
LT1611
C1: AVX TAJB226M010
C2: TAIYO YUDEN LMK212BJ105MG
C3: TAIYO YUDEN JMK325BJ226MM (1210 SIZE)
D1: MBR0520
L1: SUMIDA CLS62-220 OR 2
×
MURATA LQH3C220 (UNCOUPLED)
C1
22
μ
F
R
SS
33k
D2
1N4148
C
SS
C3
22
μ
F
C2
1
μ
F
R2
10k
R1
29.4k
C
1200pF
NFB
SHDN
+
33nF/0.1
μ
F
Figure 14. R
SS
and C
SS
at SHDN Pin Provide Soft-Start to LT1611 Inverting Converter
measured at V
IN
, is limited to a peak value of 450mA as the
time required to reach final value increases to 700
μ
s. In
Figure 16, C
SS
is increased to 0.1
μ
F, resulting in a lower
peak input current of 240mA with a V
OUT
ramp time of
2.1ms. C
SS
can be increased further for an even slower
ramp, if desired. Diode D2 serves to quickly discharge C
SS
when V
SS
is driven low to shut down the device. D2 can be
omitted, resulting in a “soft-stop” slow discharge of the
output capacitor.
Figure 15. R
SS
= 33k, C
SS
= 33nF; V
OUT
Reaches
–5V in 750
μ
s; Input Current Peaks at 450mA
V
OUT
2V/DIV
I
IN
200mA/DIV
LOAD = 150mA
500
μ
s/DIV
1611 F15
V
S
5V/DIV
Figure 16. R
SS
= 33k, C
SS
= 0.1
μ
F; V
OUT
Reaches
–5V in 2.1ms; Input Current Peaks at 240mA
V
OUT
2V/DIV
I
IN
200mA/DIV
LOAD = 150mA
500
μ
s/DIV
1611 F16
V
S
5V/DIV
相關PDF資料 |
PDF描述 |
|---|---|
| LT1613 | 1.4MHz, Single Cell DC/DC Converter in 5-Lead SOT-23 |
| LT1613CS5 | 1.4MHz, Single Cell DC/DC Converter in 5-Lead SOT-23 |
| LT1620 | Controlled Current Battery Charging(控制電流的電池充電器) |
| LT1622 | Low Input Voltage Current Mode Step-Down DC/DC Controller(低輸入電壓，電流模式步降DC/DC控制器) |
| LT1632 | 45MHz, 45V/us, Dual/Quad Rail-to-Rail Input and Output Precision Op Amps |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LT1611CS5#PBF | 制造商:Linear Technology 功能描述:Conv DC-DC Single Inv 0.9V to 10V 5-Pin TSOT-23 制造商:Linear Technology 功能描述:IC INVERTING REGULATOR 5-SOT-23 制造商:Linear Technology 功能描述:IC, INVERTING REGULATOR, 5-SOT-23 制造商:Linear Technology 功能描述:IC, INVERTING REGULATOR, 5-SOT-23; Primary Input Voltage:10V; No. of Outputs:1; Output Voltage:-5V; Output Current:150mA; No. of Pins:5; Operating Temperature Min:0C; Operating Temperature Max:70C; MSL:MSL 1 - Unlimited ;RoHS Compliant: Yes |
| LT1611CS5#TR | 功能描述:IC REG INV ADJ 0.3A SOT23-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式，混合 頻率 - 開關:600kHz 電流 - 輸出:500mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) 供應商設備封裝:8-SOIC |
| LT1611CS5#TRM | 功能描述:IC REG INV ADJ 0.3A SOT23-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式，混合 頻率 - 開關:600kHz 電流 - 輸出:500mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) 供應商設備封裝:8-SOIC |
| LT1611CS5#TRMPBF | 功能描述:IC REG INV ADJ 0.3A SOT23-5 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:250 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V 輸入電壓:2.05 V ~ 6 V PWM 型:電壓模式 頻率 - 開關:2MHz 電流 - 輸出:500mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:6-UFDFN 包裝:帶卷 (TR) 供應商設備封裝:6-SON（1.45x1） 產(chǎn)品目錄頁面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2 |
| LT1611CS5#TRMPBF | 制造商:Linear Technology 功能描述:Switching Regulator IC |
發(fā)布緊急采購，3分鐘左右您將得到回復。