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參數(shù)資料
| 型號： | EL7516IYZ-T7 |
| 廠商： | International Rectifier |
| 英文描述： | 600kHz/1.2MHz PWM Step-Up Regulator |
| 中文描述： | 600kHz/1.2MHz PWM升壓調(diào)節(jié)器 |
| 文件頁數(shù)： | 10/11頁 |
| 文件大小： | 303K |
| 代理商： | EL7516IYZ-T7 |
8
FN7333.3
Applications Information
The EL7516 is a high frequency, high efficiency boost
regulator operated at constant frequency PWM mode. The
boost converter stores energy from an input voltage source
and deliver it to a higher output voltage. The input voltage
range is 2.5V to 5.5V and output voltage range is 5V to 18V.
The switching frequency is selectable between 600KHz and
1.2MHz allowing smaller inductors and faster transient
response. An external compensation pin gives the user
greater flexibility in setting output transient response and
tighter load regulation. The converter soft-start characteristic
can also be controlled by external CSS capacitor. The SHDN
pin allows the user to completely shut-down the device.
Boost Converter Operations
Figure 28 shows a boost converter with all the key
components. In steady state operating and continuous
conduction mode where the inductor current is continuous,
the boost converter operates in two cycles. During the first
cycle, as shown in Figure 29, the internal power FET turns
on and the Schottky diode is reverse biased and cuts off the
current flow to the output. The output current is supplied
from the output capacitor. The voltage across the inductor is
VIN and the inductor current ramps up in a rate of VIN / L, L
is the inductance. The inductance is magnetized and energy
is stored in the inductor. The change in inductor current is:
FIGURE 25. TRANSIENT RESPONSE - 1.2MHz
FIGURE 26. PACKAGE POWER DISSIPATION vs AMBIENT
TEMPERATURE
FIGURE 27. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE
Typical Performance Curves (Continued)
VIN = 3.3V
VOUT = 12V
IOUT = 50mA TO 300mA
0.1ms/DIV
200mV/DIV
JEDEC JESD51-7 HIGH EFFECTIVE THERMAL
CONDUCTIVITY TEST BOARD
1
0.9
0.6
0.4
0.3
0.2
0.1
0
255075
100
125
AMBIENT TEMPERATURE (°C)
POWE
R
DI
SSI
PATI
ON
(
W
)
85
870mW
θ
JA =
115
°C
/W
MS
OP
8
0.8
0.5
0.7
JEDEC JESD51-3 LOW EFFECTIVE THERMAL
CONDUCTIVITY TEST BOARD
0.6
0.4
0.3
0.2
0.1
0
255075
100
125
AMBIENT TEMPERATURE (°C)
POWER
DISS
IP
AT
ION
(W)
85
486mW
θ
JA =
206
°C
/W
MS
OP
8
0.5
I
L1
T1
VIN
L
---------
×
=
T1
D
FSW
------------
=
D
Duty Cycle
=
V
O
IOUT
COUT
----------------
T
1
×
=
EL7516
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EL7516IYZ-T7S2695 | 制造商:Intersil Corporation 功能描述:EL7516IYZ - FOR TRACKING PURPOSES ONLY, USES PL CODE D3W - Tape and Reel |
| EL7518IWTZ-T7 | 功能描述:IC LED DRIVR WHITE BCKLGT TSOT-8 RoHS:是 類別:集成電路 (IC) >> PMIC - LED 驅(qū)動器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 恒定電流:- 恒定電壓:- 拓?fù)?PWM，切換式電容器（充電泵） 輸出數(shù):1 內(nèi)部驅(qū)動器:是 類型 - 主要:背光 類型 - 次要:白色 LED 頻率:642kHz 電源電壓:2.7 V ~ 5.5 V 輸出電壓:5V 安裝類型:表面貼裝 封裝/外殼:10-VFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-VSON 包裝:剪切帶 (CT) 工作溫度:-30°C ~ 85°C 產(chǎn)品目錄頁面:1371 (CN2011-ZH PDF) 其它名稱:BD1603NUV-E2CT |
| EL7518IWTZ-T7A | 功能描述:IC LED DRIVR WHITE BCKLGT TSOT-8 RoHS:是 類別:集成電路 (IC) >> PMIC - LED 驅(qū)動器 系列:- 標(biāo)準(zhǔn)包裝:60 系列:- 恒定電流:- 恒定電壓:- 拓?fù)?線性（LDO），PWM，升壓（升壓） 輸出數(shù):8 內(nèi)部驅(qū)動器:是 類型 - 主要:背光 類型 - 次要:RGB，白色 LED 頻率:500kHz ~ 1.5MHz 電源電壓:4.75 V ~ 26 V 輸出電壓:45V 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:* 工作溫度:-40°C ~ 85°C |
| EL7518IYZ | 功能描述:IC LED DRIVR WHITE BCKLGT 8-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - LED 驅(qū)動器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 恒定電流:- 恒定電壓:- 拓?fù)?PWM，切換式電容器（充電泵） 輸出數(shù):1 內(nèi)部驅(qū)動器:是 類型 - 主要:背光 類型 - 次要:白色 LED 頻率:642kHz 電源電壓:2.7 V ~ 5.5 V 輸出電壓:5V 安裝類型:表面貼裝 封裝/外殼:10-VFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-VSON 包裝:剪切帶 (CT) 工作溫度:-30°C ~ 85°C 產(chǎn)品目錄頁面:1371 (CN2011-ZH PDF) 其它名稱:BD1603NUV-E2CT |
| EL7518IYZ-T13 | 功能描述:IC LED DRIVR WHITE BCKLGT 8-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - LED 驅(qū)動器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 恒定電流:- 恒定電壓:- 拓?fù)?PWM，切換式電容器（充電泵） 輸出數(shù):1 內(nèi)部驅(qū)動器:是 類型 - 主要:背光 類型 - 次要:白色 LED 頻率:642kHz 電源電壓:2.7 V ~ 5.5 V 輸出電壓:5V 安裝類型:表面貼裝 封裝/外殼:10-VFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-VSON 包裝:剪切帶 (CT) 工作溫度:-30°C ~ 85°C 產(chǎn)品目錄頁面:1371 (CN2011-ZH PDF) 其它名稱:BD1603NUV-E2CT |
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